java - 从Gradle执行Java类时找不到Main

Question

我一直在尝试从Gradle运行Java Main，但是Gradle不断给我错误

Execution failed for task ':myTask'

No main class specified

我已附上以下代码

sourceSets {
    main {
        java {
            srcDirs 'src/myPackage/downloadupdater'
            srcDirs 'src/myPackage/downloadupdater/util' 
            srcDirs 'src/myPackage/downloadupdater/dao'
        }
        // output.classesDir = "/bin"
    }
}

task myTask(dependsOn : compileJava, type : JavaExec){
    group = "Custom"
    description = "Acquires the weekly stats"

    doLast{
        classpath = sourceSets.main.output.classesDir
        main = "myPackage.SomeClass"
        args "-w"
    }
}

我正在调用的Java类是:

package myPackage
public class SomeClass{

    private static DownloadUpdater updater;

    public static void main (String [] args) {

        updater = new DownloadUpdater();
    
        updater.whichStatistics(args[0]);
    
        updater.setCalendar();
    
        updater.secureWorkbook();
    
        updater.getStatistics();

    }
}

构建后，我的目录带有一个build-classes-java-main-myPackage，但是gradle仍然找不到主类。

Answer 1

将Java源文件移动到src / main / java而不是仅src。或设置

sourceSet properly
sourceSets.main.java.srcDirs = ['src'] 

和使用

task execute(type:JavaExec) {
main = "myPackage.SomeClass"
classpath = sourceSets.main.runtimeClasspath
}

有关更多信息，请引用: Gradle to execute Java class (without modifying build.gradle)