gradle:无法获得任务的未知属性“runtimeClasspath”

Question

我有以下简单的build.gradle文件：

apply plugin: 'java'

task foo(type: JavaExec) {
    main = 'gradletest2.Main'
    classpath = runtimeClasspath
}

它在执行时会生成以下错误：

C:\Users\J\Documents\Development\eclipse-photon\gradletest2>gradle foo

FAILURE: Build failed with an exception.

* Where:
Build file 'C:\Users\J\Documents\Development\eclipse-photon\gradletest2\build.gradle' line: 17

* What went wrong:
A problem occurred evaluating root project 'gradletest2'.
> Could not get unknown property 'runtimeClasspath' for task ':foo' of type org.gradle.api.tasks.JavaExec.

* Try:
Run with --stacktrace option to get the stack trace. Run with --info or --debug option to get more log output. Run with --scan to get full insights.

* Get more help at https://help.gradle.org

BUILD FAILED in 1s

顺便说一句，主要是：

package gradletest2;
public class Main {
    public static void main(String[] args) {       
        System.out.println("gradletest2");
    }
}

我为什么要犯这个错误？我正在https://youtu.be/OFUEb7pLLXw?t=2043的YT上跟踪一个正式的梯度教程视频，但不幸的是它已经很老了，所以我想知道这是否是现在不正确的语法。提前谢谢。

我用的是4.10.2级。

Answer 1

runtimeClasspath是主sourceSet的一个属性。正确的语法是

classpath = sourceSets.main.runtimeClasspath