Java jar 的 Gradle 自定义任务
声明：本页面是StackOverFlow热门问题的中英对照翻译，遵循CC BY-SA 4.0协议，如果您需要使用它，必须同样遵循CC BY-SA许可，注明原文地址和作者信息，同时你必须将它归于原作者（不是我）：StackOverFlow
原文地址: http://stackoverflow.com/questions/31031499/
Warning: these are provided under cc-by-sa 4.0 license. You are free to use/share it, But you must attribute it to the original authors (not me):
StackOverFlow
Gradle custom task for jar
提问by CMPS
I am using Gradle for my Java project and I was wondering if it's possible to prevent gradle buildfrom creating a jar file each time executed.
我在我的 Java 项目中使用 Gradle，我想知道是否可以防止gradle build每次执行时都创建一个 jar 文件。
Also, is it possible to have a custom task for creating the Jar with dependencies at a specific location build/myAppJar/.
此外，是否可以在特定位置创建具有依赖项的 Jar 的自定义任务build/myAppJar/。
Here's what I have so far for the custom task:
到目前为止，这是我对自定义任务的了解：
task toJar (type: Jar) {
from configurations.compile.collect { zipTree it }
manifest {
attributes 'Implementation-Title': 'myApp',
'Implementation-Version': 1.0,
'Main-Class': mainClassName
}
}
The above code will create the jar file under build/libs, and the file does not contain the compiled files, only the dependencies.
上面的代码会在 .jar 下创建 jar 文件build/libs，该文件不包含编译文件，只包含依赖项。
Thank you!
谢谢！
采纳答案by RaGe
The buildtask comes from the javaplugin. You can control when a jar is built with something like this:
该build任务来自java插件。您可以控制何时使用以下内容构建 jar：
jar {
onlyIf { condition }
}
You can set jar to be built when you declare something else to be true, or hard set it to false to never build a jar.
您可以在声明其他内容为 true 时将 jar 设置为构建，或者将其硬设置为 false 以从不构建 jar。
You can include sourcesets in your toJarcustom task, to include compiled files into your jar.
您可以在toJar自定义任务中包含源集，以将编译的文件包含到您的 jar 中。
task toJar (type: Jar) {
from sourceSets.all
}
You are explicitly calling for all compile time dependencies to be included in the jar here: from configurations.compile.collect
您在此处明确要求将所有编译时依赖项包含在 jar 中： from configurations.compile.collect
ref: Gradle java plugin
