使用 Gradle Kotlin DSL 构建源 jar?

Build source jar with Gradle Kotlin DSL?

This question 询问如何使用 Gradle 构建 SourceJar。我怎样才能对 Gradle Kotlin DSL 做同样的事情?

gradle 代码为:

task sourcesJar(type: Jar, dependsOn: classes) {
    classifier = 'sources'
    from sourceSets.main.allSource
}

task javadocJar(type: Jar, dependsOn: javadoc) {
    classifier = 'javadoc'
    from javadoc.destinationDir
}

artifacts {
    archives sourcesJar
    archives javadocJar
}

以下将起作用:

val sourcesJar by creating(Jar::class) {
    dependsOn(JavaPlugin.CLASSES_TASK_NAME)
    classifier = "sources"
    from(sourceSets["main"].allSource)
}

val javadocJar by creating(Jar::class) {
    dependsOn(JavaPlugin.JAVADOC_TASK_NAME)
    classifier = "javadoc"
    from(tasks["javadoc"])
}

artifacts {
    add("archives", sourcesJar)
    add("archives", javadocJar)
}

一个完整的 build.gradle.kts 看起来像这样:

plugins {
    kotlin("jvm") version "1.2.71"
}

repositories {
    mavenCentral()
}

dependencies {
}

tasks {
    val sourcesJar by creating(Jar::class) {
        dependsOn(JavaPlugin.CLASSES_TASK_NAME)
        classifier = "sources"
        from(sourceSets["main"].allSource)
    }

    val javadocJar by creating(Jar::class) {
        dependsOn(JavaPlugin.JAVADOC_TASK_NAME)
        classifier = "javadoc"
        from(tasks["javadoc"])
    }

    artifacts {
        add("archives", sourcesJar)
        add("archives", javadocJar)
    }
}

在 Gradle 5.1 中你可以做这样的事情

tasks {
    val sourcesJar by registering(Jar::class) {
        classifier = "sources"
        from(sourceSets.main.get().allSource)
        dependsOn(classes)
    }
    val javadocJar by registering(Jar::class) {
        classifier = "javadoc"
        from(javadoc.get().destinationDir)
        dependsOn(javadoc)
    }
}

在 Gradle 5.3.1 中,这会更好一些并且避免了弃用 API:

tasks {    
    val sourcesJar by creating(Jar::class) {
        archiveClassifier.set("sources")
        from(sourceSets.main.get().allSource)
    }

    val javadocJar by creating(Jar::class) {
        dependsOn.add(javadoc)
        archiveClassifier.set("javadoc")
        from(javadoc)
    }

    artifacts {
        archives(sourcesJar)
        archives(javadocJar)
        archives(jar)
    }
}

任务 assemble 将创建所有工件。

Gradle 6.0 开始,这更容易和更清洁。您需要做的就是:

java {
    withSourcesJar()
    withJavadocJar()
}

查看 java extension, and its functions, withSourcesJar() and withJavadocJar()

上的文档

所有描述的方法都因 Gradle 6.6:
上的错误而失败 SourceSet with name 'main' not found

我找到了一个有效的解决方案:

tasks {
    val sourcesJar by creating(Jar::class) {
        archiveClassifier.set("sources")
        from(android.sourceSets.getByName("main").java.srcDirs)
    }

    artifacts {
        archives(sourcesJar)
    }
}