Question

以下gradle构建脚本

task hello << {
            println "task hello"
}

hello << {
   println "th"
}

产生输出：

task hello
th

但是一个人的订单倒退导致了错误：

* What went wrong:
A problem occurred evaluating root project 
> Could not find property 'hello' on root project

那是什么错误？你能用Groovy的观点解释一下吗？

Answer 1

可以通过以下方式在Java伪代码中翻译代码：

Task task = project.addTask("hello");
task.doLast(() -> println("hello"));

task = project.getTaskByName("hello"); // works fine, because a task "hello" has bee added before
task.doLast(() -> println("th"));

如果你切换这两个操作，你得到

Task task = project.getTaskByName("hello"); // doesn't work, because no task "hello" has been defined before
task.doLast(() -> println("th"));

task = project.addTask("hello");
task.doLast(() -> println("hello"));

显然，既然您正在尝试修改尚未定义的任务，那么该功能无法正常工作。

Gradle任务执行

1 个答案: