Question

我在下面定义了一个根项目gradle任务。我是

task createVersionTxtResourceFile {
    doLast {
        def webAppVersionFile = new File("$projectDir/src/main/resources/VERSION.txt")
        def appVersion = project.ext.$full_version

        println "writing VERSION.txt to " + webAppVersionFile + ", containing " + appVersion
        webAppVersionFile.delete()
        webAppVersionFile.write(appVersion)
    }
}

在一些子项目中，我想运行此任务并在子项目的VERSION.txt中创建src/main/resources/VERSION.txt文件。我的问题是，根级任务的$projectDir是根项目。

是否可以定义在调用子项目目录时使用子项目目录的根级任务？也许总有一种更好的方法。

Answer 1

注册一个动作以等待将java插件应用于子项目时，可以稍微控制一点。这样，您就只能在包含所需compileJava任务的子项目中创建任务，并配置root项目中的所有内容。

subprojects { sub ->
    //register an action which gets executed when the java plugins gets applied.
    //if the project is already configured with the java plugin
    //then this action gets executed right away.
    sub.plugins.withId("java") {
      //create the task and save it.
      def createVersionTxtResourceFile = sub.tasks.create("createVersionTxtResourceFile") {
          doLast {
              def webAppVersionFile = new File("${sub.projectDir}/src/main/resources/VERSION.txt")
              def appVersion = rootProject.full_version

              println "writing VERSION.txt to " + webAppVersionFile + ", containing " + appVersion
              webAppVersionFile.delete()
              webAppVersionFile.write(appVersion)
          }
      }
      // set the task dependency
      sub.tasks.compileJava.dependsOn createVersionTxtResourceFile
    }
}

Answer 2

我最终只是在每个子项目中定义了任务，并在相应的子项目中设置了对它的依赖：

subprojects {

    task createVersionTxtResourceFile {
        doLast {
            def webAppVersionFile = new File("$projectDir/src/main/resources/VERSION.txt")
            def appVersion = rootProject.full_version

            println "writing VERSION.txt to " + webAppVersionFile + ", containing " + appVersion
            webAppVersionFile.delete()
            webAppVersionFile.write(appVersion)
        }
    }
}

然后在子项目build.gradle中：

compileJava.dependsOn createVersionTxtResourceFile

从子项目调用任务时如何从根gradle任务引用子项目dir

2 个答案: