How do I create an executable fat jar with Gradle

问题:

I've got a simple project in Gradle 4.6 and would like to make an executable jar of it. I've tried shadow, gradle-fatjar-plugin, gradle-one-jar, spring-boot-gradle-plugin plugins but neither of them adds my dependencies declared as implementation (I don't have any compile ones). It works with compile e.g. for gradle-one-jar plugin but I would like to have implementation dependencies.

Thank you very much!

回答1:

You can use the following code.

jar {
    manifest {
        attributes(
                'Main-Class': 'com.package.YourClass'
        )
    }
    from {
        configurations.runtimeClasspath.collect { it.isDirectory() ? it : zipTree(it) }
    }
 }

Be sure to replace com.package.YourClass with the fully qualified class name containing static void main( String args[] ).

This will pack the runtime dependencies. Check the docs if you need more info.

回答2:

The same task can be achieved using Gradle Kotlin DSL in a similar way:

val jar by tasks.getting(Jar::class) {
    manifest {
        attributes["Main-Class"] = "com.package.YourClass"
    }

    from(configurations.runtime.map { if (it.isDirectory) it else zipTree(it) })
}