Ktor 应用程序未在使用 IntelliJ IDEA 的 Kotlin 多平台项目中运行

Posted 2023-04-15

【中文标题】Ktor 应用程序未在使用 IntelliJ IDEA 的 Kotlin 多平台项目中运行

【英文标题】：Ktor app is not running inside Kotlin Multiplatform Project using IntelliJ IDEA

【发布时间】：2019-11-04 22:43:55

【问题描述】：

我正在尝试配置一个 Kotlin 多平台项目，其中包含 android 和 Ktor 模块。配置后，运行 Ktor 应用程序失败并显示以下消息：

/usr/lib/jvm/java-8-openjdk-amd64/bin/java -javaagent:/home/lenqnr/intellij-idea/lib/idea_rt.jar=44331:/home/lenqnr/intellij-idea/bin -Dfile.encoding=UTF-8 -classpath /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/charsets.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/cldrdata.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/dnsns.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/icedtea-sound.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/jaccess.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/java-atk-wrapper.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/localedata.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/nashorn.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunec.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunjce_provider.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/sunpkcs11.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/ext/zipfs.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jce.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/jsse.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/management-agent.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/resources.jar:/usr/lib/jvm/java-8-openjdk-amd64/jre/lib/rt.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-server-netty/1.2.2/86f06a652bf2859236835e802cd81dc884a72c61/ktor-server-netty-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-server-host-common/1.2.2/80e62a4dab4e116aeb50e8017838b83836764bf9/ktor-server-host-common-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-server-core/1.2.2/37ba2773c666ff3f9f35a6d5949b8b8c2edd6adf/ktor-server-core-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-http-cio-jvm/1.2.2/22659690f735fa439b4f91b83ef846e3ec7dedf1/ktor-http-cio-jvm-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-http-jvm/1.2.2/1381ef340b58a3287f1da884b9db7280466c67ff/ktor-http-jvm-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-network/1.2.2/e8b2d5f46acfc25d7e893dde14f8da41ab28b7fd/ktor-network-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.ktor/ktor-utils-jvm/1.2.2/7c51add50945d74c07926e11acd33b66295903c8/ktor-utils-jvm-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.3.40/2d1d0a2f27fd060787075c69113846803fc27734/kotlin-stdlib-jdk8-1.3.40.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-classic/1.2.1/706a8b8206ead3683ec639dd270d11fd948fbb0e/logback-classic-1.2.1.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.3.40/2995de8f68444ad47f29e7b59962ac31e6301d7e/kotlin-stdlib-jdk7-1.3.40.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-io-jvm/0.1.10/ec98e487d8c710126001c4f3086e4a0b9c0d3179/kotlinx-coroutines-io-jvm-0.1.10.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-io-jvm/0.1.10/74f179ae134d78ad360770801807c7078e71885/kotlinx-io-jvm-0.1.10.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-jdk8/1.2.2/71653b85af2fe6baeb5314c2863dffe7aac8068a/kotlinx-coroutines-jdk8-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-core/1.2.2/6ff48bdfc38a8c22e3fc37605b6a6afaed3b6dbd/kotlinx-coroutines-core-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-reflect/1.3.40/f2f8357e000fd80d8d799110f012b86fd4637386/kotlin-reflect-1.3.40.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.3.40/b8a521c687329303778548e2f09b0ba5b2665236/kotlin-stdlib-1.3.40.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/atomicfu/0.12.9/5cee16643956d76c52c7ef345448b0990b6e1e04/atomicfu-0.12.9.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.slf4j/slf4j-api/1.7.25/da76ca59f6a57ee3102f8f9bd9cee742973efa8a/slf4j-api-1.7.25.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/com.typesafe/config/1.3.1/2cf7a6cc79732e3bdf1647d7404279900ca63eb0/config-1.3.1.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec-http2/4.1.36.Final/ed198d8a5283910b0c062a50dd28ef4688dcb2a5/netty-codec-http2-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.eclipse.jetty.alpn/alpn-api/1.1.3.v20160715/a1bf3a937f91b4c953acd13e8c9552347adc2198/alpn-api-1.1.3.v20160715.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-transport-native-kqueue/4.1.36.Final/a2c6883a0f2e0adc15e6d764ced0ef044e2311c7/netty-transport-native-kqueue-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-transport-native-epoll/4.1.36.Final/5eb8b3ad0a99a16e5ae492da27544b1143e00606/netty-transport-native-epoll-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/ch.qos.logback/logback-core/1.2.1/378913dfc3c6c71e7e2a2853eff2c3e8ac27599/logback-core-1.2.1.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-io/0.1.10/798b764e7f9396e63eb263a83c0385686d69f3e0/kotlinx-coroutines-io-0.1.10.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-io/0.1.10/c407b4bf931379824cf002f110df028cfe18c87c/kotlinx-io-0.1.10.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/kotlinx-coroutines-core-common/1.2.2/8b54928fbb813408684911eb27d6afeb23c92a4b/kotlinx-coroutines-core-common-1.2.2.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.3.40/ff8f3da514fc2877d1303d55e22d6da8156c29fb/kotlin-stdlib-common-1.3.40.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains/annotations/13.0/919f0dfe192fb4e063e7dacadee7f8bb9a2672a9/annotations-13.0.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlinx/atomicfu-common/0.12.9/ba80bc10a440ea504b5cebd262becf9870e309c3/atomicfu-common-0.12.9.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec-http/4.1.36.Final/62b73d439dbddf3c0dde092b048580139695ab46/netty-codec-http-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-handler/4.1.36.Final/1c38a5920a10c01b1cce4cdc964447ec76abf1b5/netty-handler-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-codec/4.1.36.Final/8462116d327bb3d1ec24258071f2e7345a73dbfc/netty-codec-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-transport-native-unix-common/4.1.36.Final/d95d7033f400f9472db9da7834c443b96cd4bab0/netty-transport-native-unix-common-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-transport/4.1.36.Final/8546e6be47be587acab86bbd106ca023678f07d9/netty-transport-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-buffer/4.1.36.Final/7f2db0921dd57df4db076229830ab09bba713aeb/netty-buffer-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-resolver/4.1.36.Final/e4d243fbf4e6837fa294f892bf97149e18129100/netty-resolver-4.1.36.Final.jar:/home/lenqnr/.gradle/caches/modules-2/files-2.1/io.netty/netty-common/4.1.36.Final/f6f38fde652a70ea579897edc80e52353e487ae6/netty-common-4.1.36.Final.jar ApplicationKt
Error: Could not find or load main class ApplicationKt

Process finished with exit code 1

我注意到模块的输出路径不包含在-classpath 选项中。我该如何解决？

这就是我所做的：

使用 IntelliJ IDEA 创建新的 Gradle 项目，无需额外的库和框架 添加新的 Android 模块 添加新的多平台模块 添加新的 Ktor 模块 如Ktor quick start所示定义main方法

如果您按照这些步骤操作，那么我很确定您会遇到同样的问题。为了以防万一，我正在开发 Ubuntu 18.04。

项目结构：

hello
├── android
├── common
├── server
│   ├── resources
│   └── src
│       └── Application.kt
├── build.gradle
└── settings.gradle

根项目中的settings.gradle：

include ':android', ':common', ':server'

根项目中的build.gradle：

buildscript 
    repositories 
        google()
        jcenter()
    
    dependencies 
        classpath("com.android.tools.build:gradle:3.4.1")
        classpath("org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.40")
    


allprojects 
    repositories 
        google()
        jcenter()
    

【问题讨论】：

欢迎来到 SO @lenqnr 这听起来像是项目配置的问题。但如果没有更多信息，很难知道是什么。在这种情况下提供该信息的最佳方式是将 “Minimal Reproducible Example”（有时称为 minimal working example）附加到您的问题中。有关创建一个的信息，请参阅此帮助主题：***.com/help/minimal-reproducible-example 如果您的实际项目足够小并且不包含任何专有或受版权保护的材料，您可以附上它。

【参考方案1】：

这似乎是一个错误，而不仅仅是一个问题。我从JetBrains issue tracker 找到了一个临时解决方法。

在 IntelliJ IDEA 中，转到“设置 / 构建、执行、部署 / 构建工具 / Gradle / Runner”并选中“将 IDE 构建/运行操作委托给 Gradle”选项为 true，它将正常工作。