{"id":271,"date":"2020-04-24T21:38:36","date_gmt":"2020-04-24T12:38:36","guid":{"rendered":"http:\/\/localhost:8000\/?p=271"},"modified":"2021-01-17T21:32:20","modified_gmt":"2021-01-17T12:32:20","slug":"kotlin-ktor-clean-architecture","status":"publish","type":"post","link":"http:\/\/localhost:8000\/2020\/04\/kotlin-ktor-clean-architecture.html","title":{"rendered":"Kotlin+Ktor\u3067\u6280\u8853\u8981\u7d20\u3092\u8a66\u3057\u306a\u304c\u3089\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3067API\u30b5\u30fc\u30d0\u69cb\u7bc9"},"content":{"rendered":"<p>\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9Kotlin\u3068\u3044\u3048\u3070<a href=\"https:\/\/github.com\/spring-projects\/spring-boot\">Spring Boot<\/a>\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u500b\u4eba\u7684\u306b\u306fSpring Boot\u306f\u3001Auto Configuration\u306e\u30d6\u30e9\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u611f\u304c\u8f9b\u304f\u3066\u3001\u3082\u3063\u3068\u30b7\u30f3\u30d7\u30eb\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u4e57\u308a\u63db\u3048\u305f\u3044\u3068\u3044\u3046\u601d\u3044\u304c\u5e38\u3005\u3042\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>JetBrains\u793e\u88fd\u306eWeb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308b<a href=\"https:\/\/ktor.io\/\">Ktor<\/a>\u304c\u30012018\u5e7411\u6708\u306bv1.0.0\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u30012020\u5e744\u6708\u73fe\u5728v1.3.2\u307e\u3067\u9806\u8abf\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u7d9a\u3051\u3066\u304a\u308a\u3001\u305d\u308d\u305d\u308d\u672c\u683c\u7684\u306b\u5229\u7528\u3057\u3066\u3082\u826f\u3055\u305d\u3046\u306a\u6c17\u914d\u3092\u611f\u3058\u3066\u3044\u307e\u3059\u3002<\/p>\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001<u>Kotlin+Ktor\u3067REST API\u306e\u4f5c\u6210\u306b\u5fc5\u8981\u306a\u6280\u8853\u8981\u7d20\u3092Step By Step\u3067\u691c\u8a3c\u3057\u3066\u307f\u306a\u304c\u3089\u3001\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306aAPI\u30b5\u30fc\u30d0\u3092\u69cb\u7bc9\u3057\u3066\u307f\u305f\u3044<\/u>\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2021\/01\/20200418135445.png\" alt=\"\" \/><\/p>\n<h2>\u6700\u521d\u306e\u753b\u9762\u3092\u8868\u793a<\/h2>\n<p><a href=\"https:\/\/ktor.io\/quickstart\/quickstart\/intellij-idea.html\">Ktor Plugin<\/a>\u3092\u4f7f\u3046\u65b9\u6cd5\u3060\u3068\u826f\u304f\u8a2d\u5b9a\u5185\u5bb9\u3092\u7406\u89e3\u305b\u305a\u306b\u4f7f\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3057\u3001<a href=\"https:\/\/ktor.io\/quickstart\/quickstart\/docker.html\">Docker\u3092\u4f7f\u3046\u65b9\u6cd5<\/a>\u3060\u3068HotReload\u304c\u3067\u304d\u306a\u3055\u305d\u3046\u306a\u306e\u3067\u3001\u4eca\u56de\u306f<a href=\"https:\/\/ktor.io\/quickstart\/quickstart\/gradle.html\">Gradle\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3092\u4f5c\u308b\u65b9\u6cd5<\/a>\u3092\u8a66\u3057\u3066\u884c\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>IntelliJ\u3067Gradle\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u4f5c\u6210<\/h3>\n<p>\u307e\u305a\u3001Gradle\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u3067kotlin\u3092\u9078\u629e\u3057\u307e\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20190506145724-400x119.png\" alt=\"\" \/><\/p>\n<p>Gradle\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u597d\u307f\u3067\u8a2d\u5b9a\u3057\u307e\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20190506150035-400x109.png\" alt=\"\" \/><\/p>\n<ul>\n<li><code>Use auto-import<\/code>\u306f\u30d1\u30c3\u30b1\u30fc\u30b8\u306e\u81ea\u52d5\u540c\u671f\u3092\u3057\u3066\u304f\u308c\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059<\/li>\n<li><code>Create separate module per source set<\/code>\u306fsrc\u3068test\u3092\u5225module\u3068\u3057\u3066\u51fa\u529b\u3057\u3066\u3001\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3082\u5225\u7ba1\u7406\u306b\u3059\u308b\u30aa\u30d7\u30b7\u30e7\u30f3\u3067\u3059<\/li>\n<li>JVM\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u306f<a href=\"https:\/\/github.com\/ktorio\/ktor\/issues\/1137\">Java &gt;=9 support ISSUE<\/a>\u304cOPEN\u306a\u306e\u3067\u3001java8\u306b\u3057\u3066\u304a\u304f\u306e\u304c\u7121\u96e3\u305d\u3046\u3067\u3059\u3002<\/li>\n<\/ul>\n<p>\u4f5c\u6210\u3092\u9032\u3081Finish\u3059\u308b\u3068\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">$ tree\n.\n\u251c\u2500\u2500 build.gradle\n\u251c\u2500\u2500 gradle\n\u2502\u00a0\u00a0 \u2514\u2500\u2500 wrapper\n\u2502\u00a0\u00a0     \u251c\u2500\u2500 gradle-wrapper.jar\n\u2502\u00a0\u00a0     \u2514\u2500\u2500 gradle-wrapper.properties\n\u251c\u2500\u2500 gradle.properties\n\u251c\u2500\u2500 gradlew\n\u251c\u2500\u2500 gradlew.bat\n\u2514\u2500\u2500 settings.gradle\n\n2 directories, 7 files<\/code><\/pre>\n<h3>build.gradle\u306bKtor\u306eGradle\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u7528\u306e\u5185\u5bb9\u3067\u7f6e\u304d\u63db\u3048<\/h3>\n<p>\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u751f\u6210\u3055\u308c\u305f<code>build.gradle<\/code>\u306e\u5185\u5bb9\u3092<a href=\"https:\/\/ktor.io\/quickstart\/quickstart\/gradle.html#intellij-gradle-setup\">\u3053\u3061\u3089<\/a>\u306e\u5185\u5bb9\u3067\u66f8\u304d\u63db\u3048\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308aktor-server-netty\u306a\u3069\u306e\u5fc5\u8981\u306a\u30e9\u30a4\u30d6\u30e9\u30ea\u304c\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3055\u308c\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">group &#039;rinoguchi&#039;\nversion &#039;1.0-SNAPSHOT&#039;\n\nbuildscript {\n    ext.kotlin_version = &#039;1.3.70&#039;\n    ext.ktor_version = &#039;1.3.1&#039; \/\/ mavenCentral\u306b\u5b58\u5728\u3059\u308bversion\u3092\u6307\u5b9a\u3059\u308b\n\n    repositories {\n        mavenCentral()\n    }\n    dependencies {\n        classpath &quot;org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version&quot;\n    }\n}\n\napply plugin: &#039;java&#039;\napply plugin: &#039;kotlin&#039;\napply plugin: &#039;application&#039;\n\nmainClassName = &#039;MainKt&#039;\n\nsourceCompatibility = 1.8\ncompileKotlin { kotlinOptions.jvmTarget = &quot;1.8&quot; }\ncompileTestKotlin { kotlinOptions.jvmTarget = &quot;1.8&quot; }\n\nrepositories {\n    mavenCentral()\n}\n\ndependencies {\n    implementation &quot;org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlin_version&quot;\n    implementation &quot;io.ktor:ktor-server-netty:$ktor_version&quot;\n    implementation &quot;ch.qos.logback:logback-classic:1.2.3&quot;\n    testImplementation group: &#039;junit&#039;, name: &#039;junit&#039;, version: &#039;4.12&#039;\n}<\/code><\/pre>\n<h3>main\u95a2\u6570\u3092\u6301\u3064Application.kt\u3092\u4f5c\u6210<\/h3>\n<pre><code class=\"language-kotlin\">package sample\n\nimport io.ktor.application.*\nimport io.ktor.http.*\nimport io.ktor.response.*\nimport io.ktor.routing.*\nimport io.ktor.server.engine.*\nimport io.ktor.server.netty.*\n\nfun main(args: Array&lt;String&gt;) {\n    embeddedServer(Netty, 8080) {\n        routing {\n            get(&quot;\/&quot;) {\n                call.respondText(&quot;First Sample&quot;, ContentType.Text.Html)\n            }\n        }\n    }.start(wait = true)\n}<\/code><\/pre>\n<h3>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3057\u3066\u30d6\u30e9\u30a6\u30b6\u3067\u78ba\u8a8d<\/h3>\n<p><code>Application.kt<\/code>\u30d5\u30a1\u30a4\u30eb\u3092\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3066<code>Run Application.kt<\/code>\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u30d6\u30e9\u30a6\u30b6\u3067 <a href=\"http:\/\/localhost:8080\">http:\/\/localhost:8080<\/a> \u306b\u30a2\u30af\u30bb\u30b9\u3057\u307e\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200418153920-400x171.png\" alt=\"\" \/><\/p>\n<p>\u7121\u4e8b\u306b\u753b\u9762\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u3053\u308c\u304b\u3089\u4f5c\u308b\u30b5\u30f3\u30d7\u30eb\u30a2\u30d7\u30ea\u306e\u8aac\u660e<\/h2>\n<h3>\u4f5c\u308a\u305f\u3044\u3082\u306e<\/h3>\n<p>\u30e1\u30e2\u3092\u7de8\u96c6\u3059\u308b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u4f5c\u308a\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n\u30d5\u30ed\u30f3\u30c8\u30a8\u30f3\u30c9\u306f\u5225\u30b5\u30fc\u30d0\u306b\u3059\u308b\u524d\u63d0\u3067\u3001\u30e1\u30e2\u306e\u8ffd\u52a0\uff0f\u53d6\u5f97\uff0f\u5909\u66f4\uff0f\u524a\u9664\uff0f\u4e00\u89a7\u3092\u884c\u3046REST API\u3060\u3051\u63d0\u4f9b\u3059\u308b\u30b7\u30f3\u30d7\u30eb\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u3059\u3002<br \/>\nURL\u306f\u4ee5\u4e0b\u306e\u60f3\u5b9a\u3067\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6a5f\u80fd<\/th>\n<th>URL<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u8ffd\u52a0<\/td>\n<td>POST \/memos\/new<\/td>\n<\/tr>\n<tr>\n<td>\u53d6\u5f97<\/td>\n<td>GET \/memos\/{id}<\/td>\n<\/tr>\n<tr>\n<td>\u5909\u66f4<\/td>\n<td>PUT \/memos\/{id}<\/td>\n<\/tr>\n<tr>\n<td>\u524a\u9664<\/td>\n<td>DELETE \/memos\/{id}<\/td>\n<\/tr>\n<tr>\n<td>\u4e00\u89a7<\/td>\n<td>GET \/memos<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc<\/h3>\n<p>\u5b9f\u306f\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u3061\u3083\u3093\u3068\u5b9f\u88c5\u3057\u305f\u3053\u3068\u304c\u306a\u3044\u306e\u3067\u3001\u3053\u306e\u30b7\u30f3\u30d7\u30eb\u306a\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u8a66\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200418165354-400x294.jpg\" alt=\"\" \/><\/p>\n<h3>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u69cb\u6210<\/h3>\n<p>\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc\u306e\u5404\u5c64\u3067\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u5206\u3051\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">\u2514\u2500\u2500 src\n \u00a0\u00a0 \u2514\u2500\u2500 main\n \u00a0\u00a0     \u2514\u2500\u2500 kotlin\n \u00a0    \u00a0     \u251c\u2500\u2500 domain  \/\/ Enterprise Business Rules(Entities)\n \u00a0    \u00a0     \u251c\u2500\u2500 usecase  \/\/ Application Business Rules(Use Cases)\n \u00a0    \u00a0     \u251c\u2500\u2500 interfaces  \/\/ Interface Adapters(Controllers, Presenters, Gateways)\n \u00a0        \u00a0 \u2502   \u251c\u2500\u2500 controller\n \u00a0\u00a0         \u2502   \u2514\u2500\u2500 repository\n \u00a0    \u00a0     \u2514\u2500\u2500 infrastructure  \/\/ Frameworks &amp; Drivers(UI, DB, Web, Devices, External Interfaces)\n                \u251c\u2500\u2500 framework\n                \u251c\u2500\u2500 dao\n                \u251c\u2500\u2500 repositoryimpl\n \u00a0    \u00a0         \u2514\u2500\u2500 Application.kt<\/code><\/pre>\n<p>\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u5f79\u5272\u5206\u62c5\u306b\u3057\u3088\u3046\u304b\u3068\u601d\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea<\/th>\n<th>\u5f79\u5272\u5206\u62c5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>domain<\/td>\n<td>Domain\u30e2\u30c7\u30eb\u3092\u7ba1\u7406\u3059\u308b\u3002\u57fa\u672c\u7684\u306b\u306f\u30ed\u30b8\u30c3\u30af\u306f\u542b\u3081\u306a\u3044<\/td>\n<\/tr>\n<tr>\n<td>usecase<\/td>\n<td>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u306b\u5fdc\u3058\u3066\u3001Domain\u30e2\u30c7\u30eb\u3092\u4f7f\u3063\u3066\u51e6\u7406\u30fb\u8a08\u7b97\u3092\u884c\u3044\u3001\u7d50\u679c\u3092\u8fd4\u3059<\/td>\n<\/tr>\n<tr>\n<td>interfaces.controller<\/td>\n<td>\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5fdc\u3058\u3066\u3001\u5fc5\u8981\u306a\u30c7\u30fc\u30bf\uff08Domain\u30e2\u30c7\u30eb\uff09\u3092\u304b\u304d\u96c6\u3081\u3066\u3001usecase\u306b\u6e21\u3057\u3066\u51e6\u7406\u3092\u3084\u3063\u3066\u3082\u3089\u3044\u3001\u7d50\u679c\u3092\u8fd4\u3059\u3002\u3044\u308f\u3086\u308b\u30aa\u30fc\u30b1\u30b9\u30c8\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046<\/td>\n<\/tr>\n<tr>\n<td>interfaces.repository<\/td>\n<td>\u30c7\u30fc\u30bf\u306e\u683c\u7d0d\u5148\u3084ORM\u306b\u3088\u3089\u306a\u3044Repository\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3002\u3053\u308c\u306fcontroller\u304b\u3089\u547c\u3073\u51fa\u3055\u308c\u308b<\/td>\n<\/tr>\n<tr>\n<td>infrastructure.framework<\/td>\n<td>Ktor\u306b\u4f9d\u5b58\u3059\u308b\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306f\u539f\u5247\u3053\u3053\u306b\u683c\u7d0d\u3059\u308b<\/td>\n<\/tr>\n<tr>\n<td>infrastructure.dao<\/td>\n<td>Exposed\u3092\u4f7f\u3063\u3066DB\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308bDao\u30af\u30e9\u30b9<\/td>\n<\/tr>\n<tr>\n<td>infrastructure.repositoryimpl<\/td>\n<td>Repository\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306e\u5b9f\u88c5\u30af\u30e9\u30b9\u3002Dao\u30af\u30e9\u30b9\u3084\u5916\u90e8API\u306a\u3069\u3092\u547c\u3073\u51fa\u3057\u3066Domain\u30e2\u30c7\u30eb\u306b\u8a70\u3081\u66ff\u3048\u3066\u8fd4\u5374\u3059\u308b<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p>\u307e\u305a\u306f\u5404\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u6210\u3057\u3066\u3001\u5148\u307b\u3069\u4f5c\u3063\u305f<code>Application.kt<\/code>\u3092<code>infrastructure<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/p>\n<h2>\u8a2d\u5b9a(application.conf)\u3092\u8aad\u307f\u8fbc\u3093\u3067 \/gradlew run \u5b9f\u884c<\/h2>\n<p>\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\u3067\u30b5\u30fc\u30d0\u30fc\u3092\u69cb\u6210\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<br \/>\nKtor\u3067\u306f\u3001<a href=\"https:\/\/github.com\/Kodein-Framework\/Kodein-DI\">\u3053\u3061\u3089<\/a>\u3092\u53c2\u7167\u3059\u308b\u3068\u3001<code>mainClassName<\/code>\u3067\u7279\u5b9a\u306eWeb\u30b5\u30fc\u30d0\u30a8\u30f3\u30b8\u30f3\u306e<code>EngineMain<\/code>\u30af\u30e9\u30b9\u3092\u6307\u5b9a\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u3002embeddedServer\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u3001lambda\u3068DSL\u3067\u8a18\u8ff0\u3059\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<p>\u4eca\u56de\u306f Netty\u30a8\u30f3\u30b8\u30f3\u3092\u4f7f\u3046\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>.\/gradlew run\u3067\u8d77\u52d5\u3059\u308b\u30e1\u30a4\u30f3\u30af\u30e9\u30b9\u3092Netty\u30a8\u30f3\u30b8\u30f3\u306e\u30e1\u30a4\u30f3\u30af\u30e9\u30b9\u306b\u5909\u66f4<\/h3>\n<p>\u3053\u308c\u307e\u3067\u306f\u3001\u5bfe\u8c61\u306e\u30e1\u30a4\u30f3\u30af\u30e9\u30b9\u3092\u53f3\u30af\u30ea\u30c3\u30af\u3057\u3066\u76f4\u63a5\u30d7\u30ed\u30b0\u30e9\u30e0\u3092\u8d77\u52d5\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001Netty\u30a8\u30f3\u30b8\u30f3\u306e\u30e1\u30a4\u30f3\u30af\u30e9\u30b9\u3092\u8d77\u52d5\u3059\u308b\u969b\u306b\u306f\u305d\u306e\u65b9\u6cd5\u306f\u4f7f\u3048\u307e\u305b\u3093\u3002  <\/p>\n<p><code>build.gradle<\/code>\u306e<code>mainClassName<\/code>\u3092\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">mainClassName = &quot;io.ktor.server.netty.EngineMain&quot;<\/code><\/pre>\n<h3>\u81ea\u4f5c\u306emain\u95a2\u6570\u306e\u4e2d\u8eab\u3092\u62e1\u5f35\u95a2\u6570\u3068\u3057\u3066\u518d\u5b9a\u7fa9<\/h3>\n<p><code>Application.kt<\/code>\u3092\u5909\u66f4\u3057\u3001\u81ea\u4f5c\u306emain\u95a2\u6570\u306f\u524a\u9664\u3057\u3066\u3001\u51e6\u7406\u306e\u4e2d\u8eab\u306f<code>io.ktor.application.Application<\/code>\u30af\u30e9\u30b9\u306b<code>module<\/code>\u3068\u3044\u3046\u62e1\u5f35\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u3066\u8a18\u8f09\u3057\u3066\u3044\u304d\u307e\u3059\u3002\uff08\u62e1\u5f35\u95a2\u6570\u306e\u540d\u524d\u306f\u306a\u3093\u3067\u3082OK\uff09<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure\n\nimport io.ktor.application.*\nimport io.ktor.http.*\nimport io.ktor.response.*\nimport io.ktor.routing.*\n\n@Suppress(&quot;unused&quot;)\nfun Application.module() {\n    routing {\n        get(&quot;\/&quot;) {\n            call.respondText(&quot;First Sample&quot;, ContentType.Text.Html)\n        }\n    }\n}<\/code><\/pre>\n<h3>\u62e1\u5f35\u95a2\u6570\u304c\u5229\u7528\u3055\u308c\u308b\u3088\u3046application.conf\u3092\u8a18\u8f09<\/h3>\n<p><code>src\/main\/resources<\/code>\u306e\u4e0b\u306b<code>application.conf<\/code>\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<a href=\"https:\/\/github.com\/lightbend\/config\/blob\/master\/HOCON.md\">HOCON<\/a>\u4ed5\u69d8\u306b\u5f93\u3063\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002<br \/>\n<code>modules<\/code>\u306b\u5148\u307b\u3069\u4f5c\u6210\u3057\u305f<code>module<\/code>\u95a2\u6570\u3092\u6307\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-config\">ktor {\n    deployment {\n        port = 8080\n    }\n    application {\n        modules = [ infrastructure.Application.module ]\n    }\n}<\/code><\/pre>\n<h3>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3092\u8d77\u52d5<\/h3>\n<pre><code class=\"language-sh\">.\/gradlew run<\/code><\/pre>\n<p>\u753b\u9762\u30ad\u30e3\u30d7\u30c1\u30e3\u306f\u8f09\u305b\u307e\u305b\u3093\u304c\u3001\u554f\u984c\u306a\u304f\u52d5\u3044\u3066\u304f\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001\u51fa\u529b\u3055\u308c\u308b\u4ee5\u4e0b\u306e\u8b66\u544a\u306f\u3001<a href=\"https:\/\/github.com\/netty\/netty\/issues\/8179\">ISSUE<\/a>\u306b\u66f8\u3044\u3066\u3042\u308b\u3088\u3046\u306b\u6c17\u306b\u3057\u306a\u304f\u3066\u3044\u3044\u3088\u3046\u3067\u3059\u3002<\/p>\n<blockquote>\n<p>16:20:18.863 [main] DEBUG io.netty.util.internal.NativeLibraryLoader - netty_transport_native_kqueue_x86_64 cannot be loaded from java.library.path, now trying export to -Dio.netty.native.workdir: \/var\/folders\/bw\/jpoisdfqwe8fb8g3\/T<br \/>\njava.lang.UnsatisfiedLinkError: no netty_transport_native_kqueue_x86_64 in java.library.path: [\/Users\/user_name\/Library\/Java\/Extensions, \/Library\/Java\/Extensions, \/Network\/Library\/Java\/Extensions, \/System\/Library\/Java\/Extensions, \/usr\/lib\/java, .]<\/p>\n<\/blockquote>\n<h2>\u74b0\u5883\u5909\u6570\u3092\u5229\u7528<\/h2>\n<h3>application.conf\u3092\u5909\u66f4<\/h3>\n<p><a href=\"https:\/\/ktor.io\/servers\/configuration\/environments.html\">\u3053\u3061\u3089<\/a>\u306b\u66f8\u3044\u3066\u3042\u308a\u307e\u3059\u304c\u3001<code>application.conf<\/code>\u3067\u74b0\u5883\u5909\u6570\u306e\u5024\u3092\u8aad\u307f\u8fbc\u3080\u3088\u3046\u306b\u8a18\u8f09\u3067\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">ktor {\n    deployment {\n        port = 8080\n        port = ${?PORT}\n    }\n}<\/code><\/pre>\n<p>\u3053\u3061\u3089\u306e\u8a18\u8f09\u3067\u306f\u3001\u74b0\u5883\u5909\u6570<code>PORT<\/code>\u304c\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u308c\u3070\u305d\u306e\u5024\u304c\u5229\u7528\u3055\u308c\u3001\u8a2d\u5b9a\u3055\u308c\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u30c7\u30d5\u30a9\u30eb\u30c8\u5024\u306e<code>8080<\/code>\u304c\u5229\u7528\u3055\u308c\u307e\u3059\u3002<\/p>\n<h3>\u74b0\u5883\u5909\u6570\u3092\u8a2d\u5b9a\u3057\u3066\u30a2\u30d7\u30ea\u3092\u8d77\u52d5<\/h3>\n<pre><code class=\"language-sh\">export PORT=8081\n.\/gradlew run<\/code><\/pre>\n<p>\u7121\u4e8b\u306b<code>8081<\/code>\u30dd\u30fc\u30c8\u3067\u30a2\u30d7\u30ea\u304c\u8d77\u52d5\u3055\u308c\u307e\u3057\u305f\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200418164801-400x123.png\" alt=\"\" \/><\/p>\n<h2>Routinng\u3092\u5b9a\u7fa9<\/h2>\n<h3>Locations\u3092\u6709\u52b9\u5316<\/h3>\n<p>Ktor\u306eRouting\u306b\u306f\u4e8c\u3064\u306e\u65b9\u6cd5\u304c\u63d0\u4f9b\u3055\u308c\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/ktor.io\/servers\/features\/routing.html\">Routing<\/a>\u3068<a href=\"https:\/\/ktor.io\/servers\/features\/locations.html\">Locations<\/a>\u3067\u3059\u3002<\/p>\n<p>Routing\u306f\u3068\u3066\u3082\u30b7\u30f3\u30d7\u30eb\u3067\u3059\u304c\u3001\u30d1\u30e9\u30e1\u30fc\u30bf\u306e\u578b\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u305b\u3093\u3002\u305d\u306e\u305f\u3081\u53d7\u3051\u53d6\u3063\u305f\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u306f\u3001\u500b\u5225\u306b\u76ee\u7684\u306e\u578b\u306bcast\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u4e00\u65b9\u3067Location\u306f2020\u5e744\u6708\u73fe\u5728\u3001experimental feature\u306a\u306e\u3067\u3059\u304c\u3001\u578b\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff08\u30d1\u30e9\u30e1\u30fc\u30bf\u3092Type Safe\u306b\u6271\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff09\u3002\u666e\u901a\u306b\u8003\u3048\u3066Locations\u306e\u65b9\u304c\u4fbf\u5229\u305d\u3046\u306a\u306e\u3067\u3053\u3061\u3089\u3092\u5229\u7528\u3057\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3092<code>build.gradle<\/code>\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">dependencies {\n    implementation &quot;io.ktor:ktor-locations:$ktor_version&quot;\n}<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>Application.module<\/code>\u3067Locations\u3092\u6709\u52b9\u5316\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import io.ktor.locations.Locations\n\nfun Application.module() {\n    install(Locations)\n}<\/code><\/pre>\n<h3>Controller\u30af\u30e9\u30b9\u3092\u8ffd\u52a0<\/h3>\n<p>\u307e\u305a\u306f\u30e1\u30e2\u3092\u53d6\u5f97\u3059\u308b<code>MemoController<\/code>\u30af\u30e9\u30b9\u3092\u5b9f\u88c5\u3057\u307e\u3059\u3002<br \/>\nLocations\u306f\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3057\u3066\u3001URL\u3092\u5272\u308a\u5f53\u3066\u308b\u3068\u3044\u3046\u3088\u3046\u306a\u8003\u3048\u65b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u3001<code>MemoInput<\/code>\u3068\u3044\u3046\u30ea\u30bd\u30fc\u30b9\u306b\u5bfe\u3057\u3066<code>\/memos\/{id}<\/code>\u3068\u3044\u3046URL\u3092\u5272\u308a\u5f53\u3066\u3066\u307e\u3059\u3002<code>get<\/code>\u95a2\u6570\u306f\u3053\u306e<code>MemoInput<\/code>\u3092\u53d7\u3051\u53d6\u3063\u3066\u30e1\u30e2\u60c5\u5831\u3092\u6587\u5b57\u5217\u3067\u8fd4\u3059\u95a2\u6570\u3067\u3059\u3002<code>MemoInput<\/code>\u306e\u771f\u4e0b\u306b\u5b9f\u88c5\u3057\u3066\u3042\u308a\u307e\u3059\u304c\u3001\u3053\u306e\u6642\u70b9\u3067\u306f\u306a\u3093\u306e\u95a2\u9023\u3082\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<pre><code class=\"language-kotlin\">package interfaces.controller\n\nimport io.ktor.locations.Location\n\n@Location(&quot;\/memos&quot;)\nclass MemoController {\n    @Location(&quot;\/{id}&quot;)\n    data class MemoInput(val id: Int)\n\n    fun get(input: MemoInput): String {\n        return &quot;id: ${input.id}, body: sample&quot; \/\/ TODO: DB\u304b\u3089\u30e1\u30e2\u5185\u5bb9\u53d6\u5f97\n    }\n}<\/code><\/pre>\n<h3>\u30ea\u30bd\u30fc\u30b9\u3068\u51e6\u7406\u3092\u7d10\u3065\u3051<\/h3>\n<p><code>Application.module<\/code>\u306e<code>routing<\/code>\u30d6\u30ed\u30c3\u30af\u3067\u3001HTTP\u30e1\u30bd\u30c3\u30c9\u306b\u5bfe\u3057\u3066\u30ea\u30bd\u30fc\u30b9\u3092\u7d10\u3065\u3051\u3066\u3001\u305d\u306e\u7d50\u679c\u547c\u3073\u51fa\u3055\u308c\u308b\u51e6\u7406\u3092lambda\u5f0f\u3067\u5b9a\u7fa9\u3057\u307e\u3059\u3002\u4eca\u56de\u306f\u3001GET\u30e1\u30bd\u30c3\u30c9\u3067<code>MemoInput<\/code>\u30ea\u30bd\u30fc\u30b9\uff08\u3064\u307e\u308a\u3001<code>\/memos\/{id}<\/code>\uff09\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u969b\u306b\u3001<code>memoController.get()<\/code>\u95a2\u6570\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3068\u3044\u3046\u4f5c\u308a\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Application.module() {\n    routing {\n        val memoController = MemoController()\n        get&lt;MemoInput&gt; { input -&gt;\n            call.respond(memoController.get(input))\n        }\n    }\n}<\/code><\/pre>\n<h3>\u52d5\u4f5c\u78ba\u8a8d<\/h3>\n<p>\u3053\u3053\u307e\u3067\u5b9f\u88c5\u3057\u305f\u3089\u3001<code>.\/gradlew run<\/code>\u3057\u3066<br \/>\n<a href=\"https:\/\/ktor.io\/servers\/features\/locations.html\">http:\/\/localhost:8081\/memos\/1<\/a><br \/>\n\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u307e\u3059\u3002\u7121\u4e8b\u3001\u30b5\u30f3\u30d7\u30eb\u306e\u30e1\u30e2\u304c\u6587\u5b57\u5217\u3067\u8868\u793a\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n<p>[f:id:rinoguchi:20200419175340p:plain:w500]<\/p>\n<h3>Routing\u5b9a\u7fa9\u306e\u5207\u308a\u51fa\u3057<\/h3>\n<p>Routing\u5b9a\u7fa9\u306f\u3069\u3046\u898b\u3066\u3082\u592a\u3063\u3066\u304f\u308b\u306e\u3067\u3001\u5225\u30d5\u30a1\u30a4\u30eb\u306b\u5207\u308a\u51fa\u305d\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p><code>Application.module<\/code>\u5185\u3067\u5b9a\u7fa9\u3057\u3066\u3044\u305fRouting\u306e\u5b9a\u7fa9\u3092\u3001<code>Routing.kt<\/code>\u306b\u5207\u308a\u51fa\u3057\u307e\u3059\u3002<br \/>\n\u5185\u90e8\u3067\u5229\u7528\u3059\u308b<code>get<\/code>\u306a\u3069\u306f\u3001Routing\u30af\u30e9\u30b9\u306e\u95a2\u6570\u306a\u306e\u3067Routing\u30af\u30e9\u30b9\u306b\u62e1\u5f35\u95a2\u6570\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure.framework\n\nimport interfaces.controller.MemoController\nimport interfaces.controller.MemoController.MemoInput\nimport io.ktor.application.call\nimport io.ktor.locations.get\nimport io.ktor.response.respond\nimport io.ktor.routing.Routing\n\nfun Routing.root() {\n    val memoController = MemoController()\n    get&lt;MemoInput&gt; { input -&gt;\n        call.respond(memoController.get(input))\n    }\n}<\/code><\/pre>\n<p>\u3042\u308f\u305b\u3066<code>Application.module<\/code>\u3067\u5b9a\u7fa9\u3057\u305f\u62e1\u5f35\u95a2\u6570\u3092\u547c\u3073\u51fa\u3059\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import infrastructure.framework.root\n\nfun Application.module() {\n    routing {\n        root()\n    }\n}<\/code><\/pre>\n<p>\u30a2\u30d7\u30ea\u3092\u518d\u8d77\u52d5\u3057\u3066\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u554f\u984c\u306a\u304f\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30ec\u30b9\u30dd\u30f3\u30b9\u3092JSON\u3067\u8fd4\u5374<\/h2>\n<p>\u4e0a\u8a18\u306e\u5b9f\u88c5\u3067\u306f\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u6587\u5b57\u5217\u3067\u8fd4\u3057\u3066\u3044\u307e\u3057\u305f\u304c\u3001JSON\u3067\u8fd4\u3059\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<a href=\"https:\/\/ktor.io\/servers\/features\/content-negotiation\/jackson.html\">\u3053\u3061\u3089<\/a>\u3092\u53c2\u8003\u306b\u9032\u3081\u307e\u3059\u3002<\/p>\n<h3>\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u8ffd\u52a0<\/h3>\n<p>\u307e\u305a\u3001Jackson\u30e9\u30a4\u30d6\u30e9\u30ea\u3092<code>build.gradle<\/code>\u306b\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">dependencies {\n    implementation &quot;io.ktor:ktor-jackson:$ktor_version&quot;\n}<\/code><\/pre>\n<h3>\u30ec\u30b9\u30dd\u30f3\u30b9\u3092JSON\u3067\u8fd4\u3057\u3066\u304f\u308c\u308b\u3088\u3046\u8a2d\u5b9a<\/h3>\n<p><a href=\"https:\/\/ktor.io\/servers\/features\/content-negotiation.html\">ContentNegotiation<\/a>\u6a5f\u80fd\u3092\u5229\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001Content-Type\u304a\u3088\u3073Accept\u30d8\u30c3\u30c0\u30fc\u306b\u5fdc\u3058\u3066\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u81ea\u52d5\u7684\u306b\u5909\u63db\u3057\u3066\u304f\u308c\u308b\u6a5f\u80fd\u3067\u3059\u3002<br \/>\n<code>Application.module<\/code>\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u8a18\u8f09\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Application.module() {\n    install(ContentNegotiation) {\n        jackson {\n            enable(SerializationFeature.INDENT_OUTPUT)\n        }\n    }\n}<\/code><\/pre>\n<h3>Controller\u3067\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u3088\u3046\u5909\u66f4<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u3067<code>get()<\/code>\u304c<code>MemoOutput<\/code>\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u3092\u8fd4\u3059\u3088\u3046\u306b\u5909\u66f4\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">class MemoController {\n\n    @Location(&quot;\/{id}&quot;)\n    data class MemoInput(val id: Int)\n\n    data class MemoOutput(val id: Int, val body: String)\n    fun get(input: MemoInput): MemoOutput {\n        return MemoOutput(input.id, &quot;sample&quot;)\n    }\n}<\/code><\/pre>\n<h3>\u52d5\u4f5c\u78ba\u8a8d<\/h3>\n<p><code>.\/gradlew run<\/code>\u3057\u3066<br \/>\n<a href=\"https:\/\/ktor.io\/servers\/features\/locations.html\">http:\/\/localhost:8081\/memos\/1<\/a><br \/>\n\u306b\u30a2\u30af\u30bb\u30b9\u3057\u3066\u307f\u308b\u3068\u3001\u7121\u4e8b\u30ec\u30b9\u30dd\u30f3\u30b9\u304cJSON\u3067\u8fd4\u5374\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200419181633-400x373.png\" alt=\"\" \/><\/p>\n<h2>DI\uff08\u4f9d\u5b58\u6027\u306e\u6ce8\u5165\uff09\u306e\u5c0e\u5165<\/h2>\n<p>\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u3092\u3084\u308d\u3046\u3068\u3059\u308b\u3068\u3001\u5236\u5fa1\u306e\u65b9\u5411\u3068\u4f9d\u5b58\u306e\u65b9\u5411\u304c\u9006\u8ee2\u3059\u308b\u30b1\u30fc\u30b9\u304c\u767a\u751f\u3057\u307e\u3059\u3002\u305d\u308c\u3092\u89e3\u6c7a\u3059\u308b\u305f\u3081\u306b\u4f9d\u5b58\u6027\u9006\u8ee2\u306e\u539f\u5247\u304c\u91cd\u8981\u3067\u3059\u304c\u3001\u305d\u308c\u3092\u5b9f\u73fe\u3059\u308b\u305f\u3081\u306bDI\u3092\u5c0e\u5165\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>kotlin\u3060\u3068<a href=\"https:\/\/github.com\/InsertKoinIO\/koin\">Koin<\/a>\u3068<a href=\"https:\/\/github.com\/Kodein-Framework\/Kodein-DI\">Kodein<\/a>\u306e\u4e8c\u3064\u306eDI\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u304c\u3042\u308b\u3088\u3046\u3067\u3059\u304c\u3001Koin\u306e\u65b9\u304cgithub\u306estar\u304c\u591a\u3044\u306e\u3067Koin\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002  <\/p>\n<h3>\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0<\/h3>\n<p><code>build.gradle<\/code>\u306e<code>repositories<\/code>\u306b<code>jcenter()<\/code>\u3092\u8ffd\u52a0\u3057\u305f\u4e0a\u3067\u3001<code>dependencies<\/code>\u306b<code>koin-ktor<\/code>\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">repositories {\n    jcenter()\n}\ndependencies {\n    implementation &quot;org.koin:koin-ktor:2.1.5&quot;\n}<\/code><\/pre>\n<h3><code>KoinModule.kt<\/code>\u3092\u4f5c\u6210\u3057DI\u5bfe\u8c61\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u5b9a\u7fa9<\/h3>\n<p>infrastructure\u5c64\u306b<code>framework<\/code>\u3068\u3044\u3046\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u3092\u4f5c\u308a\u305d\u306e\u4e2d\u306b\u3001<code>KoinModule.kt<\/code>\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u306b\u3057\u307e\u3059\u3002<br \/>\n<code>MemoController<\/code>\u3092\u30b7\u30f3\u30b0\u30eb\u30c8\u30f3\u30aa\u30d6\u30b8\u30a7\u30af\u30c8\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure.framework\n\nimport org.koin.dsl.module\nimport interfaces.controller.MemoController\n\nval koinModules = module {\n    single { MemoController() }\n}<\/code><\/pre>\n<h3>Koin\u306b\u3088\u308bDI\u6a5f\u80fd\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/h3>\n<p><code>Application.module<\/code>\u3067\u3001Koin\u306b\u3088\u308bDI\u6a5f\u80fd\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import org.koin.ktor.ext.Koin\nimport infrastructure.framework.koinModule\n\nfun Application.module() {\n    install(Koin) {\n        modules(koinModules)\n    }\n}<\/code><\/pre>\n<h3>\u4f9d\u5b58\u6027\u3092\u6ce8\u5165<\/h3>\n<p><code>Application.module<\/code>\u3067<code>MemoController<\/code>\u30a4\u30f3\u30b9\u30bf\u30f3\u30b9\u3092\u6bce\u56de\u751f\u6210\u3057\u3066\u3044\u305f\u90e8\u5206\u3092\u4fee\u6b63\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import org.koin.ktor.ext.inject\n\nfun Application.module() {\n    routing {\n        val memoController: MemoController by inject()\n        get&lt;MemoInput&gt; {input -&gt;\n            call.respond(memoController.get(input))\n        }\n    }\n}<\/code><\/pre>\n<p>\u30a2\u30d7\u30ea\u3092\u518d\u8d77\u52d5\u3057\u3066\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u554f\u984c\u306a\u304f\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>AutoReload<\/h2>\n<p>\u90fd\u5ea6\u518d\u8d77\u52d5\u3059\u308b\u306e\u304c\u5acc\u306b\u306a\u3063\u3066\u304d\u305f\u306e\u3067\u3001<a href=\"https:\/\/ktor.io\/servers\/autoreload.html\">AutoReload<\/a>\u3092\u6709\u52b9\u306b\u3057\u3066\u3001\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306e\u5909\u66f4\u3092\u691c\u77e5\u3057\u3066\u81ea\u52d5\u7684\u306b\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u518d\u8d77\u52d5\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002  <\/p>\n<h3>application.conf\u306e\u8a2d\u5b9a<\/h3>\n<p><code>application.conf<\/code>\u306b\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u8a2d\u5b9a\u3092\u52a0\u3048\u308b\u3060\u3051\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-config\">ktor {\n    deployment {\n        watch = [ \/build\/classes\/kotlin\/main\/ ]\n    }\n}<\/code><\/pre>\n<p><code>ktor.deployment.watch<\/code>\u306b\u76e3\u8996\u5bfe\u8c61\u306e\u30af\u30e9\u30b9\u30d1\u30b9\u306b\u90e8\u5206\u4e00\u81f4\u3059\u308b\u6587\u5b57\u5217\u3092\u6307\u5b9a\u3059\u308c\u3070\u826f\u3044\u3089\u3057\u3044\u3067\u3059\u3002\u30a2\u30d7\u30ea\u306e\u8d77\u52d5\u30ed\u30b0\u306bClass Loader\u306e\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u3066\u3044\u308b\u306e\u3067\u3001\u305d\u3053\u304b\u3089\u30af\u30e9\u30b9\u30d1\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u306e\u304c\u826f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<blockquote>\n<p>19:30:08.810 [nioEventLoopGroup-3-1] DEBUG Application - Class Loader: jdk.internal.loader.ClassLoaders$AppClassLoader@9v78dsfa: [(\u7701\u7565), \/Users\/user_name\/workspace\/ktor_sample\/build\/classes\/kotlin\/main\/, \/Users\/user_name\/workspace\/ktor_sample\/build\/resources\/main\/]<\/p>\n<\/blockquote>\n<p>\u3053\u308c\u3067\u3001Idea\u3067\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3092Build\u3059\u308b\u3068\u3001\u6b21\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u304c\u767a\u751f\u3057\u305f\u6642\u306b\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304c\u81ea\u52d5\u518d\u8d77\u52d5\u3055\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>\u30d5\u30a1\u30a4\u30eb\u5909\u66f4\u3092\u691c\u77e5\u3057\u3066\u3001Idea\u306e\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9Build\u3092\u81ea\u52d5\u5316\u3059\u308b\u306b\u306f\u3001\u73fe\u72b6\u4ee5\u4e0b\u306e<code>-t<\/code>\u30aa\u30d7\u30b7\u30e7\u30f3\uff08\u5909\u66f4\u3092\u691c\u77e5\u3057\u3066\u518d\u5b9f\u884c\uff09\u3092\u3064\u3051\u3066\u3001<code>installDist<\/code>\u30b3\u30de\u30f3\u30c9\u3092\u5b9f\u884c\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">.\/gradlew -t installDist<\/code><\/pre>\n<p>\u3053\u306e\u4e00\u624b\u9593\u3092\u907f\u3051\u305f\u304f\u3066\u3001<a href=\"https:\/\/support.samuraism.com\/hc\/ja\/articles\/360019873354-IntelliJ-IDEA%E3%81%A7%E3%82%A2%E3%83%97%E3%83%AA%E3%82%B1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E8%B5%B7%E5%8B%95%E4%B8%AD%E3%81%AE%E8%87%AA%E5%8B%95%E3%82%B3%E3%83%B3%E3%83%91%E3%82%A4%E3%83%AB%E3%82%92%E6%9C%89%E5%8A%B9%E5%8C%96%E3%81%99%E3%82%8B\">\u3053\u3061\u3089\u306e\u8a18\u4e8b<\/a>\u3092\u53c2\u8003\u306bIdea\u306e\u6a5f\u80fd\u3067AutoBuild\u304c\u52d5\u304f\u3088\u3046\u306b\u8a2d\u5b9a\u3057\u3066\u307f\u305f\u306e\u3067\u3059\u304c\u3001\u3046\u307e\u304f\u3044\u304d\u307e\u305b\u3093\u3067\u3057\u305f\uff08\u6d99\uff09\u3002\u3069\u306a\u305f\u304b\u826f\u3044\u65b9\u6cd5\u304c\u3042\u308c\u3070\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>DB\u3092\u69cb\u7bc9\uff08Ktor\u95a2\u4fc2\u306a\u3044\u306e\u3067\u9069\u5f53\u306b\u8aad\u307f\u98db\u3070\u3057\u3066\u304f\u3060\u3055\u3044\uff09<\/h2>\n<p>docker-compose\u3067Postgresql\u30b3\u30f3\u30c6\u30ca\u3092\u7acb\u3061\u4e0a\u3052\u3001Flyway\u3067\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u884c\u3046\u65b9\u91dd\u3068\u3057\u307e\u3059\u3002<\/p>\n<h3>docker-compose\u3067Postgresql\u30b3\u30f3\u30c6\u30ca\u3092\u7acb\u3061\u4e0a\u3052<\/h3>\n<p>\u307e\u305a\u306f<a href=\"https:\/\/support.samuraism.com\/hc\/ja\/articles\/360019873354-IntelliJ-IDEA%E3%81%A7%E3%82%A2%E3%83%97%E3%83%AA%E3%82%B1%E3%83%BC%E3%82%B7%E3%83%A7%E3%83%B3%E8%B5%B7%E5%8B%95%E4%B8%AD%E3%81%AE%E8%87%AA%E5%8B%95%E3%82%B3%E3%83%B3%E3%83%91%E3%82%A4%E3%83%AB%E3%82%92%E6%9C%89%E5%8A%B9%E5%8C%96%E3%81%99%E3%82%8B\">\u3053\u3061\u3089<\/a>\u3092\u53c2\u8003\u306b Docker For Mac\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u307e\u3059\u3002<\/p>\n<p>\u6b21\u306b\u3001<code>docker-compose.yml<\/code>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-yaml\">version: &quot;3&quot;\nservices:\n  postgres:\n    image: postgres:latest\n    ports:\n      - &quot;5432:5432&quot;\n    environment:\n      - POSTGRES_USER=root\n      - POSTGRES_PASSWORD=root\n      - POSTGRES_DB=root<\/code><\/pre>\n<p>Docker\u30b3\u30f3\u30c6\u30ca\u3092\u7acb\u3061\u4e0a\u3052\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\"># foreground\u3067\u5b9f\u884c \u203bCtrl+C \u3067\u505c\u6b62\u3059\u308b\ndocker-compose up\n\n# background\u3067\u5b9f\u884c\ndocker-compose up -d\n\n# \u505c\u6b62\ndocker-compose stop<\/code><\/pre>\n<p>psql\u3067\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u304b\u78ba\u8a8d\u3057\u307e\u3059\u3002password\u306f<code>root<\/code>\u3067\u3059\u3002\u7121\u4e8b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-sh\">psql -h localhost -U root -d root\n> Password for user root: \n> psql (11.3)\n> Type &quot;help&quot; for help.<\/code><\/pre>\n<h3>Flyway\u3067\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3<\/h3>\n<p>\u307e\u305a\u306f\u3001<code>build.gradle<\/code>\u306b<a href=\"https:\/\/plugins.gradle.org\/plugin\/org.flywaydb.flyway\">Flyway\u30d7\u30e9\u30b0\u30a4\u30f3<\/a>\u3092\u8ffd\u52a0\u3057\u3001postgresql\u30e9\u30a4\u30d6\u30e9\u30ea\u3082\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">buildscript {\n    repositories {\n        maven { url &quot;https:\/\/plugins.gradle.org\/m2\/&quot; }\n    }\n    dependencies {\n        classpath &quot;gradle.plugin.org.flywaydb:gradle-plugin-publishing:6.3.3&quot;\n    }\n}\n\napply plugin: &quot;org.flywaydb.flyway&quot;\ndependencies {\n    implementation &quot;org.postgresql:postgresql:42.2.12&quot;\n}\n\n\/\/ Flayway\u304b\u3089\u306eDB\u63a5\u7d9a\u5b9a\u7fa9\nflyway {\n    url = &quot;jdbc:postgresql:\/\/localhost:5432\/root&quot;\n    user = &quot;root&quot;\n    password = &quot;root&quot;\n}<\/code><\/pre>\n<p><code>\/src\/main\/resources\/db\/migration\/<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e0b\u306b\u30de\u30a4\u30b0\u30ec\u30fc\u30b7\u30e7\u30f3SQL\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<code>V1__Initial.sql<\/code>\u3068\u3057\u3066\u304a\u304d\u307e\u3059\u3002\u30cd\u30fc\u30df\u30f3\u30b0\u30eb\u30fc\u30eb\u306f<a href=\"https:\/\/flywaydb.org\/documentation\/migrations#naming\">\u3053\u3061\u3089<\/a>\u3092\u53c2\u7167\u3002<\/p>\n<pre><code class=\"language-sql\">drop table if exists memo;\n\ncreate table memo (\n  id serial\n  , body text\n  , primary key (id)\n);\n\ninsert into memo (body)\nvalues\n  (&#039;sample1&#039;)\n  , (&#039;sample2&#039;)\n  , (&#039;sample3&#039;)\n;<\/code><\/pre>\n<p>Flyway\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">.\/gradlew flywayMigrate<\/code><\/pre>\n<p>\u3053\u308c\u3067\u3084\u3063\u3068DB\u304c\u6e96\u5099\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<h2>DB\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b<\/h2>\n<p>ORM\u306b\u306fKtor\u3068\u540c\u3058JetBrains\u793e\u88fd\u306e <a href=\"https:\/\/github.com\/JetBrains\/Exposed\">Exposed<\/a> \u3092\u5229\u7528\u3057\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>\u8a2d\u5b9a\u8ffd\u52a0<\/h3>\n<p>\u307e\u305a\u306f\u3001<code>build.gradle<\/code>\u306bExposed\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">dependencies {\n    implementation &quot;org.jetbrains.exposed:exposed:0.17.7&quot;\n}<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>application.conf<\/code>\u306bDB\u63a5\u7d9a\u5b9a\u7fa9\u3092\u8a18\u8f09\u3057\u307e\u3059\u3002\u74b0\u5883\u5909\u6570\u304c\u6307\u5b9a\u3055\u308c\u3066\u3044\u305f\u3089\u305d\u3061\u3089\u306e\u5024\u3092\u8aad\u307f\u8fbc\u3080\u3088\u3046\u306a\u611f\u3058\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-config\">app {\n    database {\n        url = &quot;jdbc:postgresql:\/\/localhost:5432\/root&quot;\n        url = ${?DATABASE_URL}\n        user = &quot;root&quot;\n        user = ${?DATABASE_USER}\n        password = &quot;root&quot;\n        password = ${?DATABASE_PASSWORD}\n    }\n}<\/code><\/pre>\n<h3>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u304b\u3089DB\u306b\u63a5\u7d9a\u3059\u308b\u51e6\u7406\u3092\u8ffd\u52a0<\/h3>\n<p>\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u8d77\u52d5\u6642\u306bDB\u306b\u63a5\u7d9a\u3059\u308b\u3088\u3046\u306b\u3001<code>Application.module<\/code>\u306b\u8a18\u8f09\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002\u5148\u307b\u3069<code>application.conf<\/code>\u306b\u8ffd\u52a0\u3057\u305fDB\u63a5\u7d9a\u30d1\u30e9\u30e1\u30fc\u30bf\u3092\u3053\u3053\u3067\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import org.jetbrains.exposed.sql.Database\n\nfun Application.module() {\n    Database.connect(\n        url = environment.config.property(&quot;app.database.url&quot;).getString(),\n        user = environment.config.property(&quot;app.database.user&quot;).getString(),\n        password = environment.config.property(&quot;app.database.password&quot;).getString(),\n        driver = &quot;org.postgresql.Driver&quot;\n    )\n}<\/code><\/pre>\n<h3>DAO\u30af\u30e9\u30b9\u3092\u4f5c\u6210<\/h3>\n<p><code>\/infrastructure\/dao<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e0b\u306b<code>MenoDao.kt<\/code>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<br \/>\n<code>IntIdTable<\/code>\u306fInt\u578b\u306e<code>id<\/code>\u3068\u3044\u3046Primary Key\u3092\u6301\u3064\u30c6\u30fc\u30d6\u30eb\u3092\u6271\u3046\u305f\u3081\u306e\u30d9\u30fc\u30b9\u30af\u30e9\u30b9\u3067\u3059\u3002<br \/>\n<code>IntEntityClass<\/code>\u304c<code>findById<\/code>\u306a\u3069\u306e\u4fbf\u5229\u95a2\u6570\u3092\u63d0\u4f9b\u3057\u3066\u304f\u308c\u308b\u306e\u3067\u3059\u304c\u3001\u8db3\u308a\u306a\u3051\u308c\u3070\u3001<code>MemoEntity<\/code>\u306b<code>fun findByHoge()<\/code>\u306e\u3088\u3046\u306b\u95a2\u6570\u3092\u751f\u3084\u3057\u3066\u3044\u3051\u3070\u3044\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure.dao\n\nimport org.jetbrains.exposed.dao.EntityID\nimport org.jetbrains.exposed.dao.IntEntity\nimport org.jetbrains.exposed.dao.IntEntityClass\nimport org.jetbrains.exposed.dao.IntIdTable\n\nobject MemoTable : IntIdTable(&quot;memo&quot;) {\n    val body = text(&quot;body&quot;)\n}\n\nclass MemoEntity(id: EntityID&lt;Int&gt;) : IntEntity(id) {\n    companion object : IntEntityClass&lt;MemoEntity&gt;(MemoTable)\n    var body by MemoTable.body\n}<\/code><\/pre>\n<h3>Controller\u3092\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\u306b<\/h3>\n<p>\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\u3092\u3069\u3053\u306b\u3059\u308b\u304b\u306f\u60a9\u307f\u30dd\u30a4\u30f3\u30c8\u3060\u3068\u601d\u3044\u307e\u3059\u304c\u3001\u3053\u3053\u3067\u306fController\u3092\u30c8\u30e9\u30f3\u30b6\u30af\u30b7\u30e7\u30f3\u5883\u754c\u306b\u3057\u307e\u3059\u3002<code>Rooting.kt<\/code>\u3067controller\u306e\u51e6\u7406\u5168\u4f53\u3092transaction\u3067\u304b\u3053\u307f\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kot\">import org.jetbrains.exposed.sql.transactions.transaction\n\nfun Routing.root() {\n    val memoController: MemoController by inject()\n    get&lt;MemoInput&gt; { input -&gt;\n        call.respond(transaction{ memoController.get(input) })\n    }\n}<\/code><\/pre>\n<h3>Controller\u304b\u3089DAO\u547c\u51fa\u3057<\/h3>\n<p>\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc\u7684\u306b\u306fintarface\u5c64\u304b\u3089infrastracture\u5c64\u3092\u547c\u3073\u51fa\u3059\u306e\u306fNG\u306a\u306e\u3067\u3059\u304c\u3001\u4e00\u65e6\u52d5\u4f5c\u78ba\u8a8d\u306e\u305f\u3081\u306b\u5b9f\u88c5\u3057\u307e\u3059\u3002<br \/>\n<code>MemoController.kt<\/code>\u3067DAO\u3092\u547c\u3073\u51fa\u3057\u3066\u7d50\u679c\u3092\u8fd4\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import infrastructure.dao.MemoEntity\nimport java.lang.RuntimeException\n\n@Location(&quot;\/memos&quot;)\nclass MemoController {\n    fun get(input: MemoInput): MemoOutput {\n        val memoEntity: MemoEntity? = MemoEntity.findById(input.id)\n        memoEntity ?: throw RuntimeException() \/\/ TODO: Not Found\u5bfe\u5fdc\n        return MemoOutput(memoEntity.id.value, memoEntity.body)\n    }\n}<\/code><\/pre>\n<h3>\u52d5\u4f5c\u78ba\u8a8d<\/h3>\n<p>\u4ee5\u4e0b\u306eURL\u305d\u308c\u305e\u308c\u3067\u3001\u7570\u306a\u308b\u7d50\u679c\u304c\u8fd4\u308b\u3088\u3046\u306b\u306a\u3063\u3066\u3044\u308c\u3070\u60f3\u5b9a\u901a\u308a\u3067\u3059\u3002<\/p>\n<p><b><a href=\"http:\/\/localhost:8081\/memos1\/1\">http:\/\/localhost:8081\/memos1\/1<\/a>  <\/b><br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200421135241-400x164.png\" alt=\"\" \/><\/p>\n<p><b><a href=\"http:\/\/localhost:8081\/memos2\/2\">http:\/\/localhost:8081\/memos2\/2<\/a>  <\/b><br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200421135251-400x167.png\" alt=\"\" \/><\/p>\n<h2>Repository\u5c64\u3092\u5c0e\u5165<\/h2>\n<p>\u3053\u308c\u307e\u3067\u306e\u5b9f\u88c5\u3067\u306f\u3001\u5185\u5074\uff08interface\uff09\u304c\u5916\u5074\uff08infrastructure\uff09\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3057\u305f\u3002\u3053\u308c\u3092\u89e3\u6c7a\u3059\u3079\u304f\u30c7\u30fc\u30bf\u30a2\u30af\u30bb\u30b9\u3092\u62bd\u8c61\u5316\u3057\u305fRepository\u5c64\u3092\u5c0e\u5165\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>Domain\u30e2\u30c7\u30eb\u3092\u4f5c\u6210<\/h3>\n<p>\u307e\u305a\u3001\u30c7\u30fc\u30bf\u306e\u5165\u308c\u7269\u3068\u3057\u3066\u3001Domain\u30e2\u30c7\u30eb\u3092\u5b9a\u7fa9\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002Repository\u306fDB\u304b\u3089\u53d6\u5f97\u3057\u305f\u30c7\u30fc\u30bf\u3092\u3053\u306eDomain\u30e2\u30c7\u30eb\u306b\u8a70\u3081\u66ff\u3048\u308b\u60f3\u5b9a\u3067\u3059\u3002<br \/>\n<code>\/domain<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e0b\u306b<code>Memo.kt<\/code>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package domain\n\ndata class Memo(val id: Int, val body: String)<\/code><\/pre>\n<h3>Repository\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f5c\u6210<\/h3>\n<p><code>\/interface\/repository<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e0b\u306b<code>MemoRepository<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package interfaces.repository\n\nimport domain.Memo\n\ninterface MemoRepository {\n    fun findById(id: Int) : Memo?\n}<\/code><\/pre>\n<h3>Repository\u5b9f\u88c5\u30af\u30e9\u30b9\u4f5c\u6210<\/h3>\n<p><code>\/infrastructure\/repositoryimpl<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306e\u4e0b\u306b<code>MemoRepositoryImpl<\/code>\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u3053\u3067\u306fDAO\u3092\u547c\u3073\u51fa\u3057\u3066DB\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3066\u3001Domain\u30e2\u30c7\u30eb\u3078\u306e\u8a70\u3081\u66ff\u3048\u3092\u884c\u3046\u3053\u3068\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure.repositoryimpl\n\nimport domain.Memo\nimport infrastructure.dao.MemoEntity\nimport interfaces.repository.MemoRepository\n\nclass MemoRepositoryImpl : MemoRepository {\n    override fun findById(id: Int): Memo? {\n        val memoEntity: MemoEntity? = MemoEntity.findById(id)\n        memoEntity ?: return null\n        return convertToMemo(memoEntity)\n    }\n\n    \/\/ Domain\u30e2\u30c7\u30eb\u3078\u306e\u8a70\u3081\u66ff\u3048\n    private fun convertToMemo(memoEntity: MemoEntity) : Memo {\n        return Memo(memoEntity.id.value, memoEntity.body)\n    }\n}<\/code><\/pre>\n<h3>KoinModule\u306e\u8ffd\u52a0<\/h3>\n<p><code>KoinModule.kt<\/code>\u306b\u5148\u307b\u3069\u4f5c\u6210\u3057\u305fRepository\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u8ffd\u8a18\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">val koinModules = module {\n    single { MemoController() }\n    factory&lt;MemoRepository&gt; { MemoRepositoryImpl() }\n}<\/code><\/pre>\n<h3>Controller\u3067Repository\u3092\u547c\u3073\u51fa\u3057<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u3067Repository\u30af\u30e9\u30b9\u3092inject\u3057\u3066\u3001Repository\u304b\u3089\u30c7\u30fc\u30bf\u3092\u53d6\u5f97\u3057\u3066\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u8fd4\u3059\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<br \/>\nApplication\u30af\u30e9\u30b9\u4ee5\u5916\u306e\u5834\u6240\u3067inject\u3059\u308b\u305f\u3081\u306b\u306f\u3001<code>KoinComponent<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u3092\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre><code class=\"language-kotlin\">import domain.Memo\nimport interfaces.repository.MemoRepository\nimport org.koin.core.KoinComponent\nimport org.koin.core.inject\n\n@Location(&quot;\/memos&quot;)\nclass MemoController : KoinComponent {\n    private val memoRepository: MemoRepository by inject()\n\n    fun get(input: MemoInput): MemoOutput {\n        val memo: Memo? = memoRepository.findById(input.id)\n        memo ?: throw RuntimeException() \/\/ TODO: Not Found\u5bfe\u5fdc\n        return MemoOutput(memo.id, memo.body)\n    }\n}<\/code><\/pre>\n<p>\u3053\u3053\u307e\u3067\u5b9f\u88c5\u3057\u3066\u3001\u753b\u9762\u306b\u30a2\u30af\u30bb\u30b9\u3059\u308b\u3068\u7d50\u679c\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u30ed\u30ae\u30f3\u30b0<\/h2>\n<h3>\u4f9d\u5b58\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0<\/h3>\n<p><code>build.gradle<\/code>\u3067<code>logback<\/code>\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">dependencies {\n    implementation &quot;ch.qos.logback:logback-classic:1.2.3&quot;\n}<\/code><\/pre>\n<h3>logback.xml\u3092\u4f5c\u6210<\/h3>\n<p><code>src\/main\/resources<\/code>\u306b<code>logback.xml<\/code>\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-xml\">&lt;configuration&gt;\n    &lt;appender name=&quot;STDOUT&quot; class=&quot;ch.qos.logback.core.ConsoleAppender&quot;&gt;\n        &lt;encoder&gt;\n            &lt;pattern&gt;%d{YYYY-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n&lt;\/pattern&gt;\n        &lt;\/encoder&gt;\n    &lt;\/appender&gt;\n\n    &lt;root level=&quot;DEBUG&quot;&gt;\n        &lt;appender-ref ref=&quot;STDOUT&quot;\/&gt;\n    &lt;\/root&gt;\n\n    &lt;logger name=&quot;io.netty&quot; level=&quot;DEBUG&quot;\/&gt;\n&lt;\/configuration&gt;<\/code><\/pre>\n<h3>\u30ed\u30b0\u51fa\u529b\u51e6\u7406\u3092\u8ffd\u52a0<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u3067\u3001\u30ed\u30b0\u51fa\u529b\u51e6\u7406\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import org.slf4j.Logger\nimport org.slf4j.LoggerFactory\n\nclass MemoController : KoinComponent {\n\n    private val logger: Logger = LoggerFactory.getLogger(&quot;MemoController&quot;)    \n\n    fun get(input: MemoInput): MemoOutput {\n        logger.info(&quot;MemoController.get called.&quot;)\n    }\n}<\/code><\/pre>\n<h3>\u30ed\u30b0\u78ba\u8a8d<\/h3>\n<p>\u753b\u9762\u3092\u8868\u793a\u3057\u3066\u307f\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3061\u3083\u3093\u3068\u30ed\u30b0\u304c\u51fa\u529b\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<blockquote>\n<p>2020-04-21 18:40:44.937 [nioEventLoopGroup-4-4] INFO  MemoController - MemoController.get called.<\/p>\n<\/blockquote>\n<h2>\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h2>\n<p>\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u6642\u306f\u4f8b\u5916\u3092throw\u3057\u3001FW\u304c\u305d\u306e\u4f8b\u5916\u3092catch\u3057\u3066\u9069\u5207\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8fd4\u3059\u3088\u3046\u306a\u4f5c\u308a\u306b\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>\u4f8b\u5916\u30af\u30e9\u30b9\u6bce\u306bHTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u3001\u30ec\u30b9\u30dd\u30f3\u30b9\u3092\u5b9a\u7fa9<\/h3>\n<p><code>Application.module<\/code>\u3067<a href=\"https:\/\/ktor.io\/servers\/features\/status-pages.html#logging-exceptions\">StatusPages<\/a>\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u3001\u4f8b\u5916\u30af\u30e9\u30b9\u6bce\u306b\u9069\u5207\u306aHTTP\u30b9\u30c6\u30fc\u30bf\u30b9\u30b3\u30fc\u30c9\u3068\u30e1\u30c3\u30bb\u30fc\u30b8\u3092JSON\u5f62\u5f0f\u3067\u8fd4\u3059\u3088\u3046\u306b\u3057\u307e\u3059\u3002  <\/p>\n<pre><code class=\"language-kotlin\">import io.ktor.features.NotFoundException\nimport io.ktor.features.ParameterConversionException\nimport io.ktor.features.StatusPages\nimport io.ktor.http.HttpStatusCode\nimport io.ktor.response.respond\nimport io.ktor.util.DataConversionException\n\nfun Application.module() {\n    install(StatusPages) {\n        data class ErrorResponse(val message: String?)\n\n        exception&lt;NotFoundException&gt; {\n            call.respond(HttpStatusCode.NotFound, ErrorResponse(it.message))\n        }\n        exception&lt;BadRequestException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n        exception&lt;ParameterConversionException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n        exception&lt;DataConversionException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n        exception&lt;Throwable&gt; {\n            call.respond(HttpStatusCode.InternalServerError, ErrorResponse(it.message))\n        }\n    }\n}<\/code><\/pre>\n<p><code>NotFoundException<\/code>\u3084<code>BadRequestException<\/code>\u306fKtor\u304c\u63d0\u4f9b\u3057\u3066\u304f\u308c\u3066\u3044\u308b\u4f8b\u5916\u30af\u30e9\u30b9\u3067\u3001\u3053\u306e\u4f8b\u5916\u306f\u5b9f\u88c5\u3067throw\u3059\u308b\u30a4\u30e1\u30fc\u30b8\u3067\u3059\u3002<br \/>\n<code>ParameterConversionException<\/code>\u3084<code>DataConversionException<\/code>\u306fLocations\u6a5f\u80fd\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u30d0\u30a4\u30f3\u30c7\u30a3\u30f3\u30b0\u6642\u306b\u767a\u751f\u3059\u308b\u30a8\u30e9\u30fc\u3067\u3059\u3002<br \/>\n\u307e\u305f\u3001\u60f3\u5b9a\u5916\u306e\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u305f\u6642\u306f<code>Throwable<\/code>\u3067\u62fe\u3063\u3066\u3001InternalServerError\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n<h3>Controller\u3067\u30a8\u30e9\u30fc\u3092\u767a\u751f\u3055\u305b\u308b<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u3067Memo\u30c7\u30fc\u30bf\u304c\u898b\u3064\u304b\u3089\u306a\u3051\u308c\u3070\u3001<code>NotFoundException<\/code>\u3092throw\u3059\u308b\u3088\u3046\u306b\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">import io.ktor.features.NotFoundException\n\nclass MemoController : KoinComponent {\n    fun get(input: MemoInput): MemoOutput {\n        val memo: Memo? = memoRepository.findById(input.id)\n        memo ?: throw NotFoundException(&quot;memo is not found.&quot;)\n        return MemoOutput(memo.id, memo.body)\n    }\n}<\/code><\/pre>\n<h3>\u52d5\u4f5c\u78ba\u8a8d<\/h3>\n<p><b><a href=\"http:\/\/localhost:8081\/memos\/99\">http:\/\/localhost:8081\/memos\/99<\/a><\/b><\/p>\n<p>\u5bfe\u8c61\u306e\u30c7\u30fc\u30bf\u306f\u5b58\u5728\u3057\u306a\u3044\u306e\u3067\u3001404 Not Found\u304c\u8fd4\u3063\u3066\u3044\u307e\u3059\u3002\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3082\u671f\u5f85\u901a\u308a\u3067\u3059\u306d\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200422022722-400x204.png\" alt=\"\" \/><\/p>\n<p><b><a href=\"http:\/\/localhost:8081\/memos\/xx\">http:\/\/localhost:8081\/memos\/xx<\/a><\/b><\/p>\n<p>Locations\u306e\u6a5f\u80fd\u3067\u30a4\u30f3\u30d7\u30c3\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf&quot;xx&quot;\u3092Int\u578b\u306b\u30ad\u30e3\u30b9\u30c8\u3057\u3088\u3046\u3068\u3057\u3066\u30a8\u30e9\u30fc\u304c\u767a\u751f\u3057\u3001400 BadRequest\u304c\u8fd4\u3063\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3082\u671f\u5f85\u901a\u308a\u306e\u52d5\u304d\u3067\u3059\u3002<br \/>\n<img src=\"http:\/\/localhost:8000\/wp-content\/uploads\/2020\/04\/20200422023332-400x263.png\" alt=\"\" \/><\/p>\n<h2>\u66f4\u65b0\u51e6\u7406\uff06\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/h2>\n<p><code>POST \/memos\/new<\/code>\u3067\u30e1\u30e2\u3092\u4f5c\u6210\u3059\u308b\u51e6\u7406\u3092\u4f5c\u3063\u3066\u307f\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<p>Repository -&gt; RepositoryImpl -&gt; Controller -&gt; Routing\u306e\u9806\u756a\u306b\u5b9f\u88c5\u3057\u3066\u3044\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<h3>Repository\u3092\u5b9f\u88c5<\/h3>\n<p><code>MemoRepository<\/code>\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30fc\u30b9\u306b\u65b0\u898f\u4f5c\u6210\u7528\u306e\u95a2\u6570\u3092\u5b9a\u7fa9\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">interface MemoRepository {\n    fun create(body: String) : Memo\n}<\/code><\/pre>\n<p><code>MemoRepositoryImpl<\/code>\u30af\u30e9\u30b9\u3067\u4e0a\u8a18\u3092override\u3057\u3066\u5b9f\u88c5\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">class MemoRepositoryImpl : MemoRepository {\n    override fun create(body: String): Memo {\n        val memoEntity: MemoEntity = MemoEntity.new {\n            this.body = body\n        }\n        return convertToMemo(memoEntity)\n    }\n}<\/code><\/pre>\n<h3>Controller\uff06Routing\u3092\u5b9f\u88c5<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u3067<code>MemoRepository<\/code>\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">@Location(&quot;\/memos&quot;)\nclass MemoController : KoinComponent {\n    @Location(&quot;\/new&quot;)\n    data class MemoPostInput(val body: String)\n\n    fun post(input: MemoPostInput): MemoOutput {\n        logger.info(&quot;MemoController.post called.&quot;)\n        val memo: Memo = memoRepository.create(input.body)\n        return MemoOutput(memo.id, memo.body)\n    }    \n}<\/code><\/pre>\n<p>\u6700\u5f8c\u306b\u3001<code>Routing.kt<\/code>\u306b\u30eb\u30fc\u30c6\u30a3\u30f3\u30b0\u5b9a\u7fa9\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Routing.root() {\n    post&lt;MemoPostInput&gt; { input -&gt;\n        call.respond(transaction{ memoController.post(input) })\n    }\n}<\/code><\/pre>\n<p>\u3055\u3042\u3001\u3053\u308c\u3067\u52d5\u4f5c\u78ba\u8a8d\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new -d &quot;body=xxxxxxxxxxx&quot;\n* Rebuilt URL to: POST\/\n* Could not resolve host: POST\n* Closing connection 0\ncurl: (6) Could not resolve host: POST\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#1)\n> POST \/memos\/new HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> Content-Length: 16\n> Content-Type: application\/x-www-form-urlencoded\n> \n* upload completely sent off: 16 out of 16 bytes\n&lt; HTTP\/1.1 404 Not Found\n&lt; Content-Length: 0\n&lt; \n* Connection #1 to host localhost left intact<\/code><\/pre>\n<p><b>\u6b8b\u5ff5\u306a\u3053\u3068\u306b404 Not Found\u304c\u767a\u751f\u3057\u307e\u3059\uff01\u305d\u3046\u3001Locations\u3067\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u30dc\u30c7\u30a3\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306f\u3046\u307e\u304f\u53d7\u3051\u53d6\u3063\u3066\u304f\u308c\u306a\u3044\u307f\u305f\u3044\u306a\u306e\u3067\u3059\u3002<\/b>\u3053\u308c\uff11\u5e74\u8fd1\u304f\u524d\u306b\u8a66\u3057\u305f\u6642\u306e\u30c0\u30e1\u3067\u3001\u305d\u308d\u305d\u308d\u306a\u304a\u3063\u3066\u308b\u304b\u3068\u601d\u3063\u3066\u8a66\u3057\u305f\u306e\u3067\u3059\u304c\u3001\u3084\u306f\u308a\u30c0\u30e1\u3067\u3057\u305f\u3002\u78ba\u8a8d\u3059\u308b\u3068<a href=\"https:\/\/github.com\/ktorio\/ktor\/issues\/601\">ISSUE<\/a>\u304c\u3070\u3063\u3061\u308aOPEN\u306e\u307e\u307e\u3067\u3059\u3002<\/p>\n<p>\u3061\u306a\u307f\u306b\u3001ISSUE\u306b\u3082\u66f8\u3044\u3066\u3042\u308a\u307e\u3059\u304c\u3001URL\u57cb\u3081\u8fbc\u307f\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u53d7\u3051\u53d6\u308b\u5f62\u306b\u3059\u308b\u3068\u3061\u3083\u3093\u3068\u52d5\u304d\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">@Location(&quot;\/memos&quot;)\nclass MemoController : KoinComponent {\n    @Location(&quot;\/new\/{body}&quot;)\n    data class MemoPostInput(val body: String)\n}<\/code><\/pre>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new\/xxxxxxxxxxx\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#0)\n> POST \/memos\/new\/xxxxxxxxxxx HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> \n&lt; HTTP\/1.1 200 OK\n&lt; Content-Length: 40\n&lt; Content-Type: application\/json; charset=UTF-8\n&lt; \n{\n  &quot;id&quot; : 6,\n  &quot;body&quot; : &quot;xxxxxxxxxxx&quot;\n* Connection #0 to host localhost left intact\n}<\/code><\/pre>\n<p>\u52d5\u304d\u307e\u3057\u305f\u3002\u3067\u3082\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u8907\u6570\u3042\u308b\u6642\u306a\u3069\u3053\u306e\u65b9\u6cd5\u306f\u3068\u308c\u306a\u3044\u3067\u3059\u3057\u3001URL\u306e\u9055\u548c\u611f\u304c\u5927\u304d\u3044\u3067\u3059\u3002#<br \/>\n\u7d50\u5c40\u3001Locations\u306f\u307e\u3060 exporimental \u306a\u306e\u3067\u3001\u672a\u6574\u5099\u306a\u6a5f\u80fd\u304c\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306d\u3002  <\/p>\n<h3>Routing\u3092Locations\u304b\u3089Routing\u306b\u66f8\u304d\u63db\u3048<\/h3>\n<p>\u3057\u3087\u3046\u304c\u306a\u3044\u306e\u3067\u3001Locations\u306f\u8ae6\u3081\u3066\u3001Routing\u3067\u5168\u90e8\u66f8\u304d\u76f4\u3057\u3066\u307f\u307e\u3059\u3002<\/p>\n<p>\u307e\u305a\u3001Controller\u306eLocations\u306e\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u5168\u3066\u524a\u9664\u3057\u307e\u3059\u3002\u3053\u306e\u5c64\u306bframework\u306b\u4f9d\u5b58\u3059\u308b\u30b3\u30fc\u30c9\u304c\u5b58\u5728\u3059\u308b\u3053\u3068\u306b\u9055\u548c\u611f\u304c\u3042\u3063\u305f\u306e\u3067\u3001\u9006\u306b\u826f\u304b\u3063\u305f\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002<\/p>\n<pre><code class=\"language-kotlin\">class MemoController : KoinComponent {\n    data class MemoInput(val id: Int)\n    data class MemoPostInput(val body: String)\n}<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>Routing.kt<\/code>\u3067<a href=\"https:\/\/ktor.io\/servers\/features\/routing.html\">\u3053\u3061\u3089<\/a>\u3092\u307f\u306a\u304c\u3089Routing\u306e\u65b9\u6cd5\u3092\u5909\u66f4\u3057\u307e\u3059\u3002<br \/>\nTypeSafe\u3067\u306f\u306a\u3044\u3067\u3059\u304c\u3001\u3068\u308a\u3042\u3048\u305a\u5909\u66f4\u3067\u304d\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Routing.root() {\n    route(&quot;\/memos&quot;) {\n        val memoController: MemoController by inject()\n        get(&quot;\/{id}&quot;) {\n            val input = MemoInput(call.parameters.getOrFail&lt;Int&gt;(&quot;id&quot;))\n            call.respond(transaction{ memoController.get(input) })\n        }\n        post(&quot;\/new&quot;) {\n            val input = MemoPostInput(call.receiveParameters().getOrFail(&quot;body&quot;))\n            call.respond(transaction{ memoController.post(input) })\n        }\n    }\n}<\/code><\/pre>\n<p><code>Application.module<\/code>\u306eStatusPages\u306e\u8a2d\u5b9a\u3082\u4e00\u5fdc\u5909\u66f4\u3057\u3066\u304a\u304d\u307e\u3059\u3002<code>MissingRequestParameterException<\/code>\u306f<code>getOrFail()<\/code>\u3067\u30d1\u30e9\u30e1\u30fc\u30bf\u304c\u898b\u3064\u304b\u3089\u306a\u304b\u3063\u305f\u6642\u306bthrow\u3055\u308c\u308b\u4f8b\u5916\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Application.module() {\n    install(StatusPages) {\n        exception&lt;MissingRequestParameterException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n        exception&lt;ParameterConversionException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n    }\n}<\/code><\/pre>\n<p>\u52d5\u4f5c\u78ba\u8a8d\u3057\u307e\u3059\u3002\u5927\u5206\u9060\u56de\u308a\u3057\u307e\u3057\u305f\u304c\u3001\u7121\u4e8b<code>id=7<\/code>\u3067\u65b0\u3057\u3044\u30c7\u30fc\u30bf\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new -d &quot;body=xxxxx&quot;\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#0)\n> POST \/memos\/new HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> Content-Length: 10\n> Content-Type: application\/x-www-form-urlencoded\n> \n* upload completely sent off: 10 out of 10 bytes\n&lt; HTTP\/1.1 200 OK\n&lt; Content-Length: 34\n&lt; Content-Type: application\/json; charset=UTF-8\n&lt; \n{\n  &quot;id&quot; : 7,\n  &quot;body&quot; : &quot;xxxxx&quot;\n* Connection #0 to host localhost left intact\n}<\/code><\/pre>\n<h3>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af<\/h3>\n<p>\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3082\u5ff5\u306e\u305f\u3081\u3001\u78ba\u8a8d\u3057\u3066\u304a\u3053\u3046\u3068\u601d\u3044\u307e\u3059\u3002  <\/p>\n<p>\u307e\u305a\u306f\u3001<code>\/infrastructure\/framework<\/code>\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306b<code>Exposed.kt<\/code>\u3068\u3044\u3046\u30d5\u30a1\u30a4\u30eb\u3092\u4f5c\u6210\u3057\u3066\u3001Exposed\u306e<code>transaction<\/code>\u95a2\u6570\u3092\u30e9\u30c3\u30d7\u3057\u3066\u3001\u4f8b\u5916\u3092\u53d7\u3051\u53d6\u3063\u305f\u3089rollback\u3059\u308b\u95a2\u6570\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002\u3053\u306e\u95a2\u6570\u306f\u3001\u6700\u7d42\u7684\u306bException\u3092rethrow\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package infrastructure.framework\n\nimport org.jetbrains.exposed.sql.Transaction\nimport org.jetbrains.exposed.sql.transactions.transaction\n\nfun &lt;T&gt; transactionWrapper(statement: Transaction.() -&gt; T): T {\n    return transaction {\n        try {\n            statement()\n        }\n        catch (ex: Exception) {\n            rollback()\n            throw ex \n        }\n    }\n}<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>Routing.kt<\/code>\u3067\u3082\u3068\u3082\u3068Exposed\u306e<code>transaction<\/code>\u3092\u4f7f\u3063\u3066\u3044\u305f\u90e8\u5206\u3092<code>transactionWrapper<\/code>\u306b\u7f6e\u304d\u63db\u3048\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Routing.root() {\n    route(&quot;\/memos&quot;) {\n        val memoController: MemoController by inject()\n        get(&quot;\/{id}&quot;) {\n            val input = MemoInput(call.parameters.getOrFail&lt;Int&gt;(&quot;id&quot;))\n            call.respond(transactionWrapper { memoController.get(input) })\n        }\n        post(&quot;\/new&quot;) {\n            val input = MemoPostInput(call.receiveParameters().getOrFail(&quot;body&quot;))\n            call.respond(transactionWrapper { memoController.post(input) })\n        }\n    }\n}<\/code><\/pre>\n<p>\u6700\u5f8c\u306b\u3001\u8a66\u3057\u306b<code>MemoController<\/code>\u30af\u30e9\u30b9\u3067Memo\u3092\u8ffd\u52a0\u3057\u305f\u5f8c\u306bRuntimeException\u3092\u767a\u751f\u3055\u305b\u3066\u307f\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">class MemoController : KoinComponent {\n    fun post(input: MemoPostInput): MemoOutput {\n        memoRepository.create(input.body) \/\/ \u3053\u3053\u3067DB\u306b\u30ec\u30b3\u30fc\u30c9\u8ffd\u52a0\n        throw RuntimeException(&quot;transaction rollback finished.&quot;) \/\/ \u3053\u3053\u3067\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\n    }\n}<\/code><\/pre>\n<p>\u73fe\u5728\u306e\u6700\u5927\u306ememo\u30c6\u30fc\u30d6\u30eb\u306e\u6700\u5927\u306eid\u3092psql\u3067\u78ba\u8a8d\u3059\u308b\u306819\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-sql\"># select max(id) from memo;\n max \n-----\n  19\n(1 row)<\/code><\/pre>\n<p>POST\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u6295\u3052\u3066\u307f\u308b\u3068\u3001<code>&quot;message&quot; : &quot;transaction rollback finished.&quot;<\/code>\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8fd4\u3063\u3066\u304d\u307e\u3057\u305f\u3002\u3061\u3083\u3093\u3068\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u306e\u30ed\u30b8\u30c3\u30af\u3092\u901a\u3063\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new -d &quot;body=xxxxxxxxxxxxxxxxxxxx&quot;\nNote: Unnecessary use of -X or --request, POST is already inferred.\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#0)\n> POST \/memos\/new HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> Content-Length: 25\n> Content-Type: application\/x-www-form-urlencoded\n> \n* upload completely sent off: 25 out of 25 bytes\n&lt; HTTP\/1.1 500 Internal Server Error\n&lt; Content-Length: 50\n&lt; Content-Type: application\/json; charset=UTF-8\n&lt; \n{\n  &quot;message&quot; : &quot;transaction rollback finished.&quot;\n* Connection #0 to host localhost left intact\n}<\/code><\/pre>\n<p>\u6539\u3081\u3066\u3001\u73fe\u5728\u306e\u6700\u5927\u306ememo\u30c6\u30fc\u30d6\u30eb\u306e\u6700\u5927\u306eid\u3092psql\u3067\u78ba\u8a8d\u3059\u308b\u306819\u306e\u307e\u307e\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-sql\"># select max(id) from memo;\n max \n-----\n  19\n(1 row)<\/code><\/pre>\n<p>\u3061\u3083\u3093\u3068\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u3066\u3044\u308b\u3088\u3046\u3067\u3059\u3002\u5b9f\u969b\u306b\u306f<code>RollbackException<\/code>\u30af\u30e9\u30b9\u3092\u4f5c\u3063\u305f\u308a\u3057\u3066\u3001\u60f3\u5b9a\u5185\u306e\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3068\u60f3\u5b9a\u5916\u306e\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3092\u304d\u3061\u3093\u3068\u5207\u308a\u5206\u3051\u308b\u5fc5\u8981\u304c\u3042\u308a\u305d\u3046\u3067\u3059\u304c\u3001\u73fe\u72b6\u306f\u3053\u308c\u3067\u5341\u5206\u306a\u6c17\u306f\u3057\u307e\u3059\u3002<\/p>\n<h2>UseCase\u3092\u8ffd\u52a0<\/h2>\n<p>\u4eca\u56de\u306e\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001UseCase\u5c64\u3067\u5b9f\u88c5\u3057\u305f\u3044\u3088\u3046\u306a\u8981\u4ef6\u304c\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u7121\u7406\u3084\u308a\u300c\u30e1\u30e2\u672c\u6587\u3092\u304b\u3089\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u8fd4\u3059\u300d\u3068\u3044\u3046\u30e6\u30fc\u30b9\u30b1\u30fc\u30b9\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002DB\u304b\u3089\u30e1\u30e2\u30c7\u30fc\u30bf\u3092\u53d6\u308a\u51fa\u3057\u3066\u304d\u305f\u969b\u306b\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u62bd\u51fa\u3057\u307e\u3059\u3002<br \/>\n\u6b63\u76f4\u3001Domain\u30e2\u30c7\u30eb\u306e<code>Memo<\/code>\u30af\u30e9\u30b9\u306b\u5b9f\u88c5\u3057\u305f\u307b\u3046\u304c\u3044\u3044\u306e\u3067\u306f\uff1f\u305d\u3057\u3066UseCase\u306b\u306f\u8907\u6570\u306eDomain\u30e2\u30c7\u30eb\u3092\u4f7f\u3063\u3066\u884c\u3046\u51e6\u7406\u3060\u3051\u3092\u5b9f\u88c5\u3059\u308b\u307b\u3046\u304c\u3044\u3044\u306e\u3067\u306f\uff1f\u3068\u3044\u3046\u60a9\u307f\u306f\u3042\u308a\u307e\u3057\u305f\u304c\u3001\u4eca\u56de\u306f\u4e00\u65e6UseCase\u306b\u4e0a\u8a18\u51e6\u7406\u3092\u5b9f\u88c5\u3057\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n<p>\u307e\u305aDomain\u30e2\u30c7\u30eb\u306e<code>Memo<\/code>\u30af\u30e9\u30b9\u306bkeywords\u3068\u3044\u3046\u30d7\u30ed\u30d1\u30c6\u30a3\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">data class Memo(val id: Int, val body: String, val keywords: List&lt;String&gt; = listOf())<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>\/interface\/usecase<\/code>\u306b<code>MemoService<\/code>\u30af\u30e9\u30b9\u3092\u4f5c\u6210\u3057\u307e\u3059\u3002<br \/>\n\u3068\u308a\u3042\u3048\u305a\u3001\u30e1\u30e2\u672c\u6587\u3092\u30c8\u30fc\u30af\u30f3\u5316\u3057\u3066\u30015\u6587\u5b57\u4ee5\u4e0a\u306e\u30c8\u30fc\u30af\u30f3\u3092\u30ad\u30fc\u30ef\u30fc\u30c9\u3068\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">package usecase\n\nimport domain.Memo\nimport java.util.*\n\nclass MemoService {\n    fun attachKeywords(memo: Memo): Memo {\n        val keywords = StringTokenizer(memo.body).toList().map { v -&gt; v.toString() }.filter { v -&gt; v.length &gt; 5 }\n        return memo.copy(keywords = keywords)\n    }\n}<\/code><\/pre>\n<p>\u3055\u3089\u306b\u3001\u3053\u306e\u51e6\u7406\u3092<code>KoinModule.kt<\/code>\u306eDI\u3059\u308b\u30e2\u30b8\u30e5\u30fc\u30eb\u3068\u3057\u3066\u767b\u9332\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">val koinModules = module {\n    single { MemoService() }\n}<\/code><\/pre>\n<p>\u6b21\u306b\u3001<code>MemoRepositoryImpl<\/code>\u3067\u4e0a\u8a18\u306e\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u62bd\u51fa\u3059\u308b\u51e6\u7406\u3092\u547c\u3073\u51fa\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">    private fun convertToMemo(memoEntity: MemoEntity) : Memo {\n        val memo = Memo(memoEntity.id.value, memoEntity.body)\n        return memoService.attachKeywords(memo)\n    }<\/code><\/pre>\n<p>\u6700\u5f8c\u306b\u3001<code>MemoController<\/code>\u30af\u30e9\u30b9\u3067\u3001\u30ad\u30fc\u30ef\u30fc\u30c9\u3092\u8fd4\u3059\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">    data class MemoOutput(val id: Int, val body: String, val keywords: List&lt;String&gt;)\n\n    private fun memoToMemoOutput(memo: Memo): MemoOutput {\n        return MemoOutput(memo.id, memo.body, memo.keywords!!)\n    }\n\n    fun get(input: MemoInput): MemoOutput {\n        logger.info(&quot;MemoController.get called.&quot;)\n        val memo: Memo? = memoRepository.findById(input.id)\n        memo ?: throw NotFoundException(&quot;memo is not found.&quot;)\n        return memoToMemoOutput(memo)\n    }<\/code><\/pre>\n<p>\u3053\u308c\u3067\u3001\u62bd\u51fa\u3057\u305f\u30ad\u30fc\u30ef\u30fc\u30c9\u304c\u30ec\u30b9\u30dd\u30f3\u30b9\u3068\u3057\u3066\u8fd4\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<code>kotlin is programming language<\/code>\u3068\u3044\u3046\u30e1\u30e2\u672c\u6587\u304b\u3089\u3001<code>[ &quot;kotlin&quot;, &quot;programming&quot;, &quot;language&quot; ]<\/code>\u304c\u30ad\u30fc\u30ef\u30fc\u30c9\u3068\u3057\u3066\u62bd\u51fa\u3055\u308c\u3066\u3044\u307e\u3059\u306d\u3002<\/p>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new -d &quot;body=kotlin is programming language&quot;\nNote: Unnecessary use of -X or --request, POST is already inferred.\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#0)\n> POST \/memos\/new HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> Content-Length: 35\n> Content-Type: application\/x-www-form-urlencoded\n> \n* upload completely sent off: 35 out of 35 bytes\n&lt; HTTP\/1.1 200 OK\n&lt; Content-Length: 115\n&lt; Content-Type: application\/json; charset=UTF-8\n&lt; \n{\n  &quot;id&quot; : 5,\n  &quot;body&quot; : &quot;kotlin is programming language&quot;,\n  &quot;keywords&quot; : [ &quot;kotlin&quot;, &quot;programming&quot;, &quot;language&quot; ]\n* Connection #0 to host localhost left intact\n}<\/code><\/pre>\n<h2>Validation<\/h2>\n<p>SpringBoot\u306a\u3069\u3068\u7570\u306a\u308a\u3001Ktor\u3067\u306fValidation\u6a5f\u80fd\u306f\u63d0\u4f9b\u3055\u308c\u3066\u3044\u306a\u3044\u3088\u3046\u3067\u3059\u306e\u3067\u3001\u81ea\u524d\u3067\u5b9f\u88c5\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3068\u306f\u3044\u3048\u3001\u30bc\u30ed\u304b\u3089\u5b9f\u88c5\u3059\u308b\u306e\u306f\u304d\u3064\u3044\u306e\u3067\u3001<a href=\"https:\/\/mvnrepository.com\/artifact\/javax.validation\/validation-api\">Bean Validation API<\/a>\u3092\u4f7f\u3063\u3066\u3001Controller\u306e\u5f15\u6570\uff08data class)\u306b\u5bfe\u3057\u3066Routing\u6642\u306b\u30c1\u30a7\u30c3\u30af\u3092\u304b\u3051\u308b\u3088\u3046\u306a\u5f62\u3067\u5b9f\u88c5\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002\u30c1\u30a7\u30c3\u30afNG\u306e\u5834\u5408\u306f<code>ValidationException<\/code>\u3092throw\u3057\u3066\u3001\u5148\u307b\u3069\u306e\u30a8\u30e9\u30fc\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\uff08StatusPages\uff09\u3092\u4f7f\u3063\u3066\u5b9f\u73fe\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<h3>\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0<\/h3>\n<p><code>build.gradle<\/code>\u306b\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<code>validation-api<\/code>\u3060\u3051\u3067\u306a\u304f\u3001validation-provider\u306e<code>hibernate-validator<\/code>\u3084EL\u5f0f\u3092\u89e3\u91c8\u3059\u308b\u305f\u3081\u306e<code>javax.el<\/code>\u306a\u3069\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n<pre><code class=\"language-groovy\">dependencies {\n    implementation &quot;javax.validation:validation-api:2.0.1.Final&quot;\n    runtimeOnly &#039;org.hibernate.validator:hibernate-validator:6.0.17.Final&#039;\n    runtimeOnly &#039;org.glassfish:javax.el:3.0.1-b11&#039;\n}<\/code><\/pre>\n<h3>\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067Validation\u5185\u5bb9\u3092\u8a2d\u5b9a<\/h3>\n<p><code>MemoController<\/code>\u30af\u30e9\u30b9\u306e\u5404\u30a2\u30af\u30b7\u30e7\u30f3\u306e\u5f15\u6570\u306fdata class\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u304c\u3001\u3053\u306e\u30c7\u30fc\u30bf\u30af\u30e9\u30b9\u306b\u5bfe\u3057\u3066\u30a2\u30ce\u30c6\u30fc\u30b7\u30e7\u30f3\u3067Validation\u5185\u5bb9\u3092\u6307\u5b9a\u3057\u307e\u3059\u3002\u4eca\u56de\u306f\u30e1\u30e2\u5185\u5bb9<code>body<\/code>\u304c20\u6587\u5b57\u4ee5\u5185\u3068\u3044\u3046\u30c1\u30a7\u30c3\u30af\u3067\u3059\u3002<\/p>\n<p><code>@field:Size<\/code>\u306e\u3088\u3046\u306b<code>field:<\/code>\u3092\u3064\u3051\u3066\u3001<a href=\"https:\/\/kotlinlang.org\/docs\/reference\/annotations.html\">\u30bf\u30fc\u30b2\u30c3\u30c8<\/a>\u3092\u660e\u78ba\u306b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u306e\u3067\u3054\u6ce8\u610f\u304f\u3060\u3055\u3044\u3002<\/p>\n<pre><code class=\"language-kotlin\">class MemoController : KoinComponent {\n    data class MemoPostInput(@field:Size(max = 20) val body: String)\n}<\/code><\/pre>\n<h3>Validator\u306eDI\u5b9a\u7fa9\u8ffd\u52a0<\/h3>\n<p><code>KoinModule.kt<\/code>\u306bValidator\u306e\u30e2\u30b8\u30e5\u30fc\u30eb\u3092\u8ffd\u52a0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">val koinModules = module {\n    factory&lt;Validator&gt; { Validation.buildDefaultValidatorFactory().validator }\n}<\/code><\/pre>\n<h3>Routing\u6642\u306bValidation\u5b9f\u884c<\/h3>\n<p>Routing\u6642\u306bValidation\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002validation\u3092\u5b9f\u884c\u3057\u3066\u30a8\u30e9\u30fc\u304c\u3042\u3063\u305f\u3089\u3001<code>ValidationException<\/code>\u3092throw\u3059\u308b\u3088\u3046\u306a\u30e9\u30c3\u30d1\u30fc\u95a2\u6570\u3092\u6e96\u5099\u3057\u3066\u305d\u308c\u3092\u4f7f\u3046\u3088\u3046\u306b\u3057\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun &lt;T&gt; Validator.validateAndThrow(obj: T, vararg groups: Class&lt;*&gt;?) {\n    val errors = this.validate(obj, *groups)\n    if (errors.size &gt; 0) throw ValidationException(errors.joinToString { e -&gt; &quot;${e.propertyPath}: ${e.message}&quot; })\n}\n\nfun Routing.root() {\n    val validator: Validator by inject()\n\n    route(&quot;\/memos&quot;) {\n        val memoController: MemoController by inject()\n        post(&quot;\/new&quot;) {\n            val input = MemoPostInput(call.receiveParameters().getOrFail(&quot;body&quot;))\n            validator.validateAndThrow(input)\n            call.respond(transactionWrapper { memoController.post(input) })\n        }<\/code><\/pre>\n<h3>StatusPages\u3067ValidationException\u3092\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0<\/h3>\n<p><code>Application.module<\/code>\u306eStatusPages\u3067<code>ValidationException<\/code>\u3092\u30cf\u30f3\u30c9\u30ea\u30f3\u30b0\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Application.module() {\n    install(StatusPages) {\n        exception&lt;ValidationException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n    }\n}<\/code><\/pre>\n<h3>\u52d5\u4f5c\u78ba\u8a8d<\/h3>\n<p>&quot;body=body length is over 20. xxxxxxxxxxxxxxxxxxxx&quot;\u3068\u3044\u3046\u30d1\u30e9\u30e1\u30fc\u30bf\u3067\u30e1\u30e2\u306e\u8ffd\u52a0API\u3092\u547c\u3073\u51fa\u3057\u3001<code>&quot;message&quot; : &quot;body: size must be between 0 and 20&quot;<\/code> \u3068\u3044\u3046\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8fd4\u3063\u3066\u304d\u307e\u3057\u305f\u3002<\/p>\n<pre><code class=\"language-sh\">curl -v -X POST http:\/\/localhost:8081\/memos\/new -d &quot;body=body length is over 20. xxxxxxxxxxxxxxxxxxxx&quot;\nNote: Unnecessary use of -X or --request, POST is already inferred.\n*   Trying ::1...\n* TCP_NODELAY set\n* Connected to localhost (::1) port 8081 (#0)\n> POST \/memos\/new HTTP\/1.1\n> Host: localhost:8081\n> User-Agent: curl\/7.54.0\n> Accept: *\/*\n> Content-Length: 49\n> Content-Type: application\/x-www-form-urlencoded\n> \n* upload completely sent off: 49 out of 49 bytes\n&lt; HTTP\/1.1 400 Bad Request\n&lt; Content-Length: 55\n&lt; Content-Type: application\/json; charset=UTF-8\n&lt; \n{\n  &quot;message&quot; : &quot;body: size must be between 0 and 20&quot;\n* Connection #0 to host localhost left intact\n}I<\/code><\/pre>\n<h3>Null\u30c1\u30a7\u30c3\u30af\u3084\u578b\u5909\u63db\u30c1\u30a7\u30c3\u30af<\/h3>\n<p>Null\u30c1\u30a7\u30c3\u30af\u306f<code>@NotNull<\/code>\u3067\u30c1\u30a7\u30c3\u30af\u3057\u305f\u304f\u306a\u308a\u307e\u3059\u304c\u3001\u30c1\u30a7\u30c3\u30af\u5bfe\u8c61\u30d7\u30ed\u30d1\u30c6\u30a3\u306f\u3082\u3068\u3082\u3068NonNull\u306a\u306e\u3067\u3053\u306e\u65b9\u6cd5\u3067\u306f\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u305b\u3093\u3002\u307e\u305f\u3001Int\u578b\u306e\u30d1\u30e9\u30e1\u30fc\u30bf\u306b\u6570\u5024\u4ee5\u5916\u3092\u6307\u5b9a\u3057\u305f\u5834\u5408\u306e\u578b\u5909\u63db\u30c1\u30a7\u30c3\u30af\u3082data class\u306b\u30d0\u30a4\u30f3\u30c9\u3067\u304d\u3066\u3044\u308b\u6642\u70b9\u3067\u578b\u5909\u63db\u3067\u304d\u3066\u3044\u308b\u3068\u3044\u3046\u3053\u3068\u306a\u306e\u3067\u540c\u69d8\u306b\u30c1\u30a7\u30c3\u30af\u3067\u304d\u307e\u305b\u3093\u3002<br \/>\n\u3053\u308c\u3089\u306f\u3001Routing\u306e<code>call.receiveParameters().getOrFail()<\/code>\u3092\u4f7f\u3063\u3066\u30c1\u30a7\u30c3\u30af\u3059\u308b\u5f62\u306b\u3057\u3088\u3046\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Routing.root() {\n    route(&quot;\/memos&quot;) {\n        get(&quot;\/{id}&quot;) {\n            val input = MemoInput(call.parameters.getOrFail&lt;Int&gt;(&quot;id&quot;))\n            call.respond(transactionWrapper{ memoController.get(input) })\n        }\n}<\/code><\/pre>\n<p>\u3053\u306e<code>getOrFail<\/code>\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b\u3001\u5024\u304c\u306a\u3044\u6642\u3084\u30b3\u30f3\u30d0\u30fc\u30b8\u30e7\u30f3\u5931\u6557\u3057\u305f\u6642\u306bException\u3092throw\u3057\u307e\u3059\u3002<\/p>\n<blockquote>\n<ul>\n<li>@throws MissingRequestParameterException if no values associated with this [name]\n<ul>\n<li>@throws ParameterConversionException when conversion from String to [R] fails<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<\/blockquote>\n<p>\u306a\u306e\u3067\u3001StatusPages\u306b\u4ee5\u4e0b\u306e\u5b9a\u7fa9\u3092\u8ffd\u52a0\u3059\u308c\u3070\u554f\u984c\u306a\u304f\u52d5\u4f5c\u3057\u307e\u3059\u3002<\/p>\n<pre><code class=\"language-kotlin\">fun Application.module() {\n    install(StatusPages) {\n        exception&lt;MissingRequestParameterException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n        exception&lt;ParameterConversionException&gt; {\n            call.respond(HttpStatusCode.BadRequest, ErrorResponse(it.message))\n        }\n    }\n}<\/code><\/pre>\n<h2>\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9<\/h2>\n<p>\u6700\u7d42\u7684\u306a\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u306fGitHub\u3067\u516c\u958b\u3057\u3066\u3042\u308a\u307e\u3059\u306e\u3067\u3001\u5fc5\u8981\u304c\u3042\u308c\u3070<a href=\"https:\/\/github.com\/rinoguchi\/ktor_cleanarchiver_sample\">\u3053\u3061\u3089<\/a>\u304b\u3089\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<h2>\u611f\u60f3<\/h2>\n<ul>\n<li>\n<p>SpringBoot\u306b\u6bd4\u3079\u308b\u3068\u63d0\u4f9b\u3057\u3066\u3044\u308b\u6a5f\u80fd\u3082\u5c11\u306a\u304f\u3001Document\u3082\u30b9\u30c3\u30ad\u30ea\u3057\u3066\u3044\u308b\u306e\u3067\u3001\u57fa\u672c\u7684\u306b\u307b\u3068\u3093\u3069\u306f\u307e\u308a\u307e\u305b\u3093\u3067\u3057\u305f\u3057\u3001API\u30b5\u30fc\u30d0\u3068\u3057\u3066\u4f7f\u3046\u5206\u306b\u306f\u4eca\u56de\u306e\u691c\u8a3c\u5185\u5bb9\u3067\u3082\u3060\u3044\u305f\u3044OK\u306a\u611f\u3058\u304c\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<li>\n<p>Ktor\u306f\u4f7f\u3044\u305f\u3044\u6a5f\u80fd\u3092\u4e00\u3064\u305a\u3064\u8db3\u3057\u3066\u3044\u304f\u30b9\u30bf\u30f3\u30b9\u306a\u306e\u3067\u3001\u5229\u7528\u8005\u306e\u597d\u307f\u3067\u3069\u308c\u3050\u3089\u3044FW\u306b\u4f9d\u5b58\u3059\u308b\u304b\uff08\u8584\u304f\u3059\u308b\u304b\u3001\u539a\u304f\u3059\u308b\u304b\uff09\u3092\u9078\u3079\u307e\u3059\u3002\u4eca\u56de\u306e\u7bc4\u56f2\u3067\u3042\u308c\u3070\u307b\u3068\u3093\u3069FW\u4f9d\u5b58\u306e\u30b3\u30fc\u30c9\u3082\u306a\u3044\u3067\u3059\u3057\u3001\u3042\u3068\u3067\u5225\u306eFW\u306b\u4e57\u308a\u63db\u3048\u308b\u3053\u3068\u3082\u96e3\u3057\u304f\u306a\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<\/li>\n<li>\n<p>\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc\u3082\uff08\u3053\u308c\u304c\u6b63\u3057\u3044\u304b\u306f\u3044\u307e\u3044\u3061\u81ea\u4fe1\u304c\u306a\u3044\u3067\u3059\u304c\uff09\u3001\u5185\u5074\u306e\u5c64\u304c\u5916\u5074\u306e\u5c64\u306b\u4f9d\u5b58\u3057\u306a\u3044\u72b6\u614b\u306f\u4f5c\u308a\u51fa\u305b\u307e\u3057\u305f\u3057\u3001\u3088\u304f\u3042\u308b\u30e2\u30c7\u30eb\u306e\u8a70\u3081\u66ff\u3048\u4f5c\u696d\u307f\u305f\u3044\u306a\u30bd\u30fc\u30b9\u3082\u6700\u4f4e\u9650\u306b\u6291\u3048\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3057\u305f\u3002\u4eca\u56de\u3050\u3089\u3044\u306e\u5185\u5bb9\u3067\u3042\u308c\u3070\u5b9f\u88c5\u306e\u624b\u9593\u304c\u5897\u3048\u305f\u611f\u3058\u306f\u307b\u3068\u3093\u3069\u306a\u304f\u3001\u3053\u308c\u3067\u5185\u5074\u306e\u5c64\u306e\u5b89\u5b9a\u6027\u304c\u5897\u3059\u306e\u3067\u3042\u308c\u3070\u304b\u306a\u308a\u826f\u3055\u305d\u3046\u3067\u3059\u3002<\/p>\n<\/li>\n<\/ul>\n<p>\u4ee5\u4e0a\u306e\u3053\u3068\u304b\u3089\u3001\u81ea\u5206\u3068\u3057\u3066\u306fKtor\uff0b\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u30fc\u3092\u5b9f\u904b\u7528\u3067\u63a1\u7528\u3059\u308b\u9078\u629e\u80a2\u3082\u5341\u5206\u3042\u308a\u3048\u308b\u3068\u601d\u3044\u307e\u3057\u305f\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30b5\u30fc\u30d0\u30b5\u30a4\u30c9Kotlin\u3068\u3044\u3048\u3070Spring Boot\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u304c\u591a\u3044\u3068\u601d\u3044\u307e\u3059\u3002 \u500b\u4eba\u7684\u306b\u306fSpring Boot\u306f\u3001Auto Configuration\u306e\u30d6\u30e9\u30c3\u30af\u30dc\u30c3\u30af\u30b9\u611f\u304c\u8f9b\u304f\u3066\u3001\u3082\u3063\u3068\u30b7\u30f3\u30d7\u30eb\u306a\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u306b\u4e57\u308a\u63db\u3048\u305f\u3044\u3068\u3044\u3046\u601d\u3044\u304c\u5e38\u3005\u3042\u308a\u307e\u3057\u305f\u3002 JetBrains\u793e\u88fd\u306eWeb\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308bKtor\u304c\u30012018\u5e7411\u6708\u306bv1.0.0\u304c\u30ea\u30ea\u30fc\u30b9\u3055\u308c\u30012020\u5e744\u6708\u73fe\u5728v1.3.2\u307e\u3067\u9806\u8abf\u306b\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3055\u308c\u7d9a\u3051\u3066\u304a\u308a\u3001\u305d\u308d\u305d\u308d\u672c\u683c\u7684\u306b\u5229\u7528\u3057\u3066\u3082\u826f\u3055\u305d\u3046\u306a\u6c17\u914d\u3092\u611f\u3058\u3066\u3044\u307e\u3059\u3002 \u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001Kotlin+Ktor\u3067REST API\u306e\u4f5c\u6210\u306b\u5fc5\u8981\u306a\u6280\u8853\u8981\u7d20\u3092Step By Step\u3067\u691c\u8a3c\u3057\u3066\u307f\u306a\u304c\u3089\u3001\u30af\u30ea\u30fc\u30f3\u30a2\u30fc\u30ad\u30c6\u30af\u30c1\u30e3\u306aAPI\u30b5\u30fc\u30d0\u3092\u69cb\u7bc9\u3057\u3066\u307f\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002 \u6700\u521d\u306e\u753b\u9762\u3092\u8868\u793a Ktor Plugin\u3092\u4f7f\u3046\u65b9\u6cd5\u3060\u3068\u826f\u304f\u8a2d\u5b9a\u5185\u5bb9\u3092\u7406\u89e3\u305b\u305a\u306b\u4f7f\u3063\u3066\u3057\u307e\u3046\u3053\u3068\u306b\u306a\u308a\u305d\u3046\u3067\u3059\u3057\u3001D <a href=\"http:\/\/localhost:8000\/2020\/04\/kotlin-ktor-clean-architecture.html\" class=\"read-more button-fancy -red\"><span class=\"btn-arrow\"><\/span><span class=\"twp-read-more text\">Continue Reading<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,27,28],"tags":[],"_links":{"self":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/271"}],"collection":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/comments?post=271"}],"version-history":[{"count":1,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/271\/revisions"}],"predecessor-version":[{"id":283,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/posts\/271\/revisions\/283"}],"wp:attachment":[{"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/media?parent=271"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/categories?post=271"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/localhost:8000\/wp-json\/wp\/v2\/tags?post=271"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}