java - 无法运行 Gradle 应用引擎任务

Question

我对将旧的 Google App Engine 项目转换为 Gradle 感到非常困惑。

我正在尝试按照 this 上的说明进行操作页。它建议从这个构建脚本开始:

buildscript {    // Configuration for building
  repositories {
    jcenter()    // Bintray's repository - a fast Maven Central mirror & more
    mavenCentral()
  }
  dependencies {
    classpath 'com.google.cloud.tools:appengine-gradle-plugin:+'    // latest App Engine Gradle tasks
  }
}

repositories {   // repositories for Jar's you access in your code
  maven {
    url 'https://maven-central.storage.googleapis.com'             // Google's mirror of Maven Central
//   url 'https://oss.sonatype.org/content/repositories/snapshots' // SNAPSHOT Repository (if needed)
  }
  jcenter()
  mavenCentral()
}

apply plugin: 'java'                              // standard Java tasks
apply plugin: 'war'                               // standard Web Archive plugin
apply plugin: 'com.google.cloud.tools.appengine'  // App Engine tasks

dependencies {
  providedCompile group: 'javax.servlet', name: 'servlet-api', version:'2.5'
  compile 'com.google.appengine:appengine:+'
// Add your dependencies here.

}

appengine {  // App Engine tasks configuration
  run {      // local (dev_appserver) configuration (standard environments only)
    port = 8080                 // default
  }

  deploy {   // deploy configuration
    stopPreviousVersion = true  // default - stop the current version
    promote = true              // default - & make this the current version
  }
}

group = 'com.example.appengine'   // Generated output GroupId
version = '1.0-SNAPSHOT'          // Version in generated output

sourceCompatibility = 1.7  // App Engine Standard uses Java 7
targetCompatibility = 1.7  // App Engine Standard uses Java 7

但是它不起作用:

$ gradle appengineRun

FAILURE: Build failed with an exception.

* Where:
Build file '/path/to/myproject/build.gradle' line: 32

* What went wrong:
A problem occurred evaluating root project 'myproject'.
> Could not find method run() for arguments [build_c1i62diotjttavcmtjg1zqlbd$_run_closure3$_closure5@33f17289] on root project 'myproject' of type org.gradle.api.Project.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output.

BUILD FAILED

是否应该下载依赖项以使自定义 appengine 任务配置工作？

Answer 1

请看sources的插件。应用核心插件时，它会决定是应用灵活 还是标准 appengine 插件。由于可能没有应用 src/main/webapp/WEB-INF/appengine-web.xml 灵活的插件，它不会创建失败的扩展(仅供引用，此扩展已创建 here )。要解决此问题，请运行:

mkdir -p src/main/webapp/WEB-INF

然后:

touch src/main/webapp/WEB-INF/appengine-web.xml

在 build.gradle 所在的控制台中。这将解决问题。糟糕的文档:/