为什么 gradle 任务没有运行正确的顺序

Question

我有 java 个项目和 2 个子项目。像这样的结构

- project_root
  |- client
     |- src
     |- build.gradle
  |- server
     |- src
     |- build.gradle
  |- build.gradle

我只需要在根目录 buiild.gradle 中创建 'deploy' 任务并执行下一步操作：

清理所有子项目
清理 'target' 文件夹
为所有子项目制作 jar
将所有子项目的 jar 复制到根目录中的文件夹 'target'
制作目标文件夹的存档。

我就是这样做的

root build.gradle:

allprojects {
    apply plugin: 'java'
    repositories {
        mavenCentral()
    }
}

task cleanTarget(type: Delete) {
    delete "target"
    delete "target.zip"
}

task cleanAll() {
    dependsOn cleanTarget
    dependsOn clean
    dependsOn subprojects.clean
}

task jarChilds() {
    dependsOn subprojects.jar
}

task copyFiles(type: Copy) {
    copy {
        from("client/build/libs/")
        into project.file('target')
    }
    copy {
        from("server/build/libs/")
        into project.file('target')
    }
}

task zipApp(type: Zip) {
    from 'target/'
    include '*'
    include '*/*'
    archiveName 'target.zip'
    destinationDir(project.rootDir)
}

task deploy{
    dependsOn cleanAll
    dependsOn jarChilds
    dependsOn copyFiles
    dependsOn zipApp
    jarChilds.shouldRunAfter cleanAll
    copyFiles.shouldRunAfter jarChilds
    zipApp.shouldRunAfter copyFiles
}

如果我手动运行每个任务运行都正确，但是如果我运行 'deploy' 文件夹 'target' 没有创建。这是日志输出：

Executing task 'deploy'...

> Task :clean
> Task :cleanTarget
> Task :client:clean
> Task :server:clean
> Task :cleanAll
> Task :client:compileKotlin
> Task :client:compileJava
> Task :client:processResources
> Task :client:classes
> Task :client:inspectClassesForKotlinIC

> Task :client:jar
Client jar done

> Task :server:compileKotlin
> Task :server:compileJava
> Task :server:processResources
> Task :server:classes
> Task :server:inspectClassesForKotlinIC

> Task :server:jar
Server jar done

> Task :jarChilds
> Task :copyFiles NO-SOURCE
> Task :zipApp NO-SOURCE
> Task :deploy


BUILD SUCCESSFUL in 3s
14 actionable tasks: 14 executed
12:39:15: Task execution finished 'deploy'.

我看到错误“NO-SOURCE”，但文件夹 'client/build/libs' 和 'server/build/libs' 存在并包含 jar。我可以肯定，因为手动运行ning 任务 'copyFiles' 创建文件夹 'target' 并复制所有文件。我看到的唯一可能的选项是 'copyFiles' task 运行ning before 'jarChilds'。但我不明白为什么。我错过了什么，为什么它不起作用？

P/S/ 抱歉我的英语不好

Answer 1

您的任务copyFiles使用方法copy of the Project instance instead of configuring the actual task. This is the reason why the task stays unconfigured and, once it is executed, reports that there are no files to process (NO-SOURCE). To configure your task, use methods of the task type Copy:

task copyFiles(type: Copy) {
    from("client/build/libs/")
    from("server/build/libs/")
    into("target")
}

附加提示：您可能根本不需要您的任务 copyFiles。相反，您可以只使用任务 zipApp 来收集文件：

task zipApp(type: Zip) {
    from subprojects.jar
    archiveName 'target.zip'
    destinationDir(project.rootDir)
}

通过将 subprojects 的 jar 任务放入 from 方法中， Gradle 甚至会自动添加任务依赖项，因此您无需使用 dependsOn.

注册它们

查看以下简短而完整的 build.gradle 文件：

subprojects {                    // using subprojects here, because your root project has no sources
    apply plugin: 'java'
    repositories {
        mavenCentral()
    }
}

task clean(type: Delete) {       // without the 'java' plugin, there is no automatic 'clean' task
    dependsOn subprojects.clean
    delete 'target.zip'
}

task zipApp(type: Zip) {
    mustRunAfter clean
    from subprojects.jar
    archiveName 'target.zip'
    destinationDir(project.rootDir)
}

task deploy {
    dependsOn clean
    dependsOn zipApp
}

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