JAR任务从Gradle 1.7更改为4.1

Question

我有一个当前使用Gradle 1.7版构建的项目，由于构建速度更快并且可以并行下载依赖项，因此我正尝试移至4.1版。 但是，我看到了一些我不太理解的奇怪行为。 我有几个子项目的build.gradle文件，该文件覆盖了Java插件的主类任务。 它在其中运行一个ant任务，该任务在构建目录中生成类。

task classes(overwrite: true) {
  inputs.dir project.ext.inputsPath
  outputs.dir "${project.buildDir}/classes/main"
  doLast {
    ant.taskdef(name: 'xmlbean', classname: 'org.apache.xmlbeans.impl.tool.XMLBean', classpath: configurations.compile.asPath)
    ant.xmlbean(srcgendir: "${project.buildDir}/generated-sources/xmlbeans",
                classgendir: "${project.buildDir}/classes/main",
                javasource: '1.5',
                failonerror: true,
                includeAntRuntime: false,
                classpath: project.configurations.compile.asPath) {
        fileset(dir: schemaPath, includes: project.ext.has('inclusionPattern') ? project.ext.inclusionPattern : '*.xsd')
    }
  }
}

这一切都按预期工作，我在{ project_dir }/build/classes/main生成了{ project_dir }/build/classes/main

这是我从控制台获得的输出

> Task :my-task:classes
  Putting task artifact state for task ':my-task:classes' into context took 0.0 secs.
  Executing task ':my-task:classes' (up-to-date check took 0.002 secs) due to:
  [ant:xmlbean] Time to build schema type system: 0.616 seconds
  [ant:xmlbean] Time to generate code: 1.512 seconds
  [ant:xmlbean] Compiling 226 source files to E:\Development\my-task\build\classes\main

  [ant:xmlbean] 4 warnings

> Task :my-task:classes
  [ant:xmlbean] Time to compile code: 6.263 seconds

  :my-task:classes (Thread[Task worker for ':' Thread 3,5,main]) completed. Took 8.899 secs.
  :my-task:jar (Thread[Task worker for ':' Thread 3,5,main]) started.

> Task :my-task:jar
  Putting task artifact state for task ':my-task:jar' into context took 0.0 secs.
  Executing task ':my-task:jar' (up-to-date check took 0.004 secs) due to:
  Output property 'archivePath' file E:\Development\my-task\build\libs\my-task.jar has changed.

  :my-task:jar (Thread[Task worker for ':' Thread 3,5,main]) completed. Took 0.012 secs.
  :my-task:install (Thread[Task worker for ':' Thread 3,5,main]) started.

> Task :my-task:install

与先运行ant的任务相比，classes任务似乎运行了两次（不确定是否有任何区别）。 如前所述，我确实获得了ant任务生成的类。

我的问题是，由于某种原因，当jar任务运行build / classes / main内部的类时，由于某种原因，Gradle 1.7-> 4.1之间的行为似乎已更改（正如您期望的那样），我只是得到一个空白的清单文件。 如何使用默认的jar任务将使用ant任务生成的这些类添加到Jar中？

Answer 1

您为什么要覆盖classes任务？ 通常的方法是创建一个附加任务，该任务将写入新目录并将其连接到DAG中

例如：

apply plugin: 'java'

task xmlBeanClasses {
   def inclusionPattern = project.ext.has('inclusionPattern') ? project.ext.inclusionPattern : '*.xsd'
   inputs.property 'inclusionPattern', inclusionPattern 
   inputs.dir project.ext.inputsPath
   inputs.dir schemaPath
   outputs.dir "$buildDir/classes/xmlbeans"
   outputs.dir "$buildDir/generated-sources/xmlbeans"
   doLast { 
      // TODO: generate classes in $buildDir/classes/xmlbeans
   }
}

// wire the new task into the DAG
classes.dependsOn xmlBeanClasses

// add the generated classes dir to the "main" classesDirs
// (this dir will now be included in the jar etc)
sourceSets.main.output.classesDirs.add files("$buildDir/classes/xmlbeans")