相当于非 Android Gradle 中的产品风味？

Question

我正在创建一个桌面 Java 应用程序，并希望创建两个版本：免费和付费。不同之处主要在于包含哪些资源文件（在将来，它可能还会涉及不同的代码，但不是现在）。

我读过Android build variants 允许通过“产品风味”实现此类事情。不过，这似乎是android 插件独有的功能，桌面上显然没有。

是否有不依赖于androidplugin 的与这些产品风格等效的产品？

如果有帮助，我的最终目标是找到一种方法，让我可以运行 Gradle build 任务并输出两个不同版本的应用程序，这是我对 Android 构建变体完成什么的理解。

Answer 1

当然您可以使用sourceSets 并自定义Jar 任务来完成相同的效果。

group 'com.jbirdvegas.example'
version '1.0-SNAPSHOT'

repositories {
    jcenter()
}

// adding the java plugin add the `jar` task to the build task graph
apply plugin: 'java'

compileJava {
    sourceCompatibility = JavaVersion.VERSION_1_8
    targetCompatibility = JavaVersion.VERSION_1_8
}

/**
 * SourceSets allows different builds to have their own
 * code.  If main and flavorOne contain com.foo.Bar then
 * the `flavorOne` jar will contain the file specified by
 * the `flavorOne` source set files.
 */
sourceSets {
    main {
        // you could also do per sourceSet resources if needed
        java.srcDir 'src/main/java'
    }
    flavorOne {
        java.srcDir 'src/flavorOne/java'
    }
    flavorTwo {
        java.srcDir 'src/flavorTwo/java'
    }
}

/**
 * Creates the first flavor's jar when the Java plugin's `Jar`
 * task is called.  Since the `jar` task depends on `flavorOne` task
 * this task will run before the generic `jar` task which produces
 * the base .jar artifact.
 */
task flavorOne(type: Jar) {
    from sourceSets.flavorOne.output
    classifier = 'flavorOneJar'
    manifest {
        attributes "Main-Class": "de.jeha.photo.mosaic.cli.Main"
    }
}

/**
 * Creates the second flavor's jar when the Java plugin's `Jar`
 * task is called.  `flavorTwo` can run before `flavorOne` because
 * both must just run before the `jar` task (base artifact)
 */
task flavorTwo(type: Jar) {
    from sourceSets.flavorTwo.output
    classifier = 'flavorTwoJar'
    manifest {
        attributes "Main-Class": "de.jeha.photo.mosaic.cli.Main"
    }
}

// be sure to build all flavors whenever the `jar` task runs
jar.dependsOn flavorOne, flavorTwo

dependencies {
    // you can declare different dependencies per sourceSets
    flavorOneCompile 'com.google.code.gson:gson:2.5'
    flavorTwoCompile 'com.something:else:1.0'
    compile 'commons-io:commons-io:2.4'
    testCompile group: 'junit', name: 'junit', version: '4.11'
}

/**
 * if you want to have specific control over the main jar's
 * build then you could configure the main jar as needed.
 * This is the equivalent of the `flavorBlah` tasks except
 * this task was added for us by the `java` plugin.  Changes
 * here will only affect the main jar built from `sourceSet.main`
 *
 * Think of this as the default where other `productFlavors` are
 * completely divorced from this jar's configuration.
 */
jar {
    manifest {
        attributes "Main-Class": "de.jeha.photo.mosaic.cli.Main"
    }
}

然后我们可以看到不同的构建。我们的口味和 main 源集 jar。

$ ls -l build/libs/
-rw-r--r--  1 jbirdvegas  63209268   1.3K Jan  6 08:58 my-sweet-jar-1.0-SNAPSHOT-flavorOneJar.jar
-rw-r--r--  1 jbirdvegas  63209268   302B Jan  6 08:58 my-sweet-jar-1.0-SNAPSHOT-flavorTwoJar.jar
-rw-r--r--  1 jbirdvegas  63209268    18K Jan  6 08:58 my-sweet-jar-1.0-SNAPSHOT.jar