Inheritance 如何在gradle任务之间共享代码？

所以我有一些gradle任务要和glassfish互动

task startGlassfish(type:Exec){
    workingDir "${glassfishHome}${File.separator}bin"

    if (System.properties['os.name'].toLowerCase().contains('windows')) {
        commandLine 'cmd', '/c', 'asadmin.bat'
    } else {
        commandLine "./asadmin"
    }

    args "start-domain", "${glassfishDomain}"
}

task stopGlassfish(type:Exec){
    workingDir "${glassfishHome}${File.separator}bin"

    if (System.properties['os.name'].toLowerCase().contains('windows')) {
        commandLine 'cmd', '/c', 'asadmin.bat'
    } else {
        commandLine "./asadmin"
    }

    args "stop-domain", "${glassfishDomain}"
}

task deploy(dependsOn: 'war', type:Exec) {
    workingDir "${glassfishHome}${File.separator}bin"

    if (System.properties['os.name'].toLowerCase().contains('windows')) {
        commandLine 'cmd', '/c', 'asadmin.bat'
    } else {
        commandLine "./asadmin"
    }

    args "deploy", "--force=true", "${war.archivePath}"
}

这是很多不必要的代码重复，我想把它重构成更精简的东西

我确实试过了

class GlassfishAsadminTask extends Exec{
    @TaskAction
    def run() {
        workingDir "${glassfishHome}${File.separator}bin"

        if (System.properties['os.name'].toLowerCase().contains('windows')) {
            commandLine 'cmd', '/c', 'asadmin.bat'
        } else {
            commandLine "./asadmin"
        }
    }
}

task startGlassfish(type:GlassfishAsadminTask){

    args "start-domain", "${glassfishDomain}"
}

但这对我们来说是失败的

任务“：startGlassfish”的执行失败

>execCommand==null

所以我显然误解了什么

---

如何实现这一点？

在编写自定义任务类时，我建议首先检查原始任务的代码。可以看到，Exec task的@TaskAction是Exec（）方法

您可以使用以下代码

class GlassfishAsadminTask extends Exec{
    // arguments that tasks will pass (defined as array)
    @Input
    String[] cmdArguments

    @TaskAction
    public void exec() {
        // access properties with project.proppertyName
        workingDir "${project.glassfishHome}${File.separator}bin"

        if (System.properties['os.name'].toLowerCase().contains('windows')) {
            commandLine 'cmd', '/c', 'asadmin.bat'
        } else {
            commandLine "./asadmin"
        }
        // set args that is set by the task
        args cmdArguments
        super.exec()
    }
}

// A sample task
task startGlassfish(type: GlassfishAsadminTask) {
     cmdArguments = ["start-domain", "${glassfishDomain}"]
}

---

有趣的。。。如果我这样尝试，我会得到任务的

执行失败：startGlassfish'>无法为任务获取未知属性“glassfishHome”：类型为GlassfishAsadminTask的startGlassfish。

（是的，这些属性位于

gradle.properties

中，并且问题帖子中带有重复代码的版本确实有效。）@User1291您需要访问类似project.glassfishHome的属性。我更新了答案