java - Gradle 任务的 doFirst() 不会首先执行，而是在任务完成之后执行

Question

我用 Java 创建了一个 Gradle 任务:

class TestTask extends Exec {

    public TestTask() {

        doLast(new Action<Object>(){
            @Override
            public void execute(Object task) {
                System.out.println("Should be last ");
            }
        });

        doFirst(new Action<Object>(){
            @Override
            public void execute(Object task) {
                System.out.println("Should be first ");
            }
        });

        commandLine("echo", "Should be between");
    }
}

执行这个任务，我期望得到

Should be first
Should be between
Should be last

但是我得到了

Should be between
Should be first
Should be last

我正在将插件从 Groovy 转换为 Java，在 Groovy 中，定义如下时处理顺序与预期一致:

task dofirsttest(type: Exec) {
    doFirst{
        println "Should be first"
    }
    doLast{
        println "Should be last"
    }
    commandLine "echo", "Should be between"
}

我的任务有问题吗？

Answer 1

commandLine("echo", "Should be Between"); 处于任务的配置阶段。所以会先执行。看看:https://docs.gradle.org/current/userguide/build_lifecycle.html