使用 Gradle 和 NetBeans 构建可执行文件 jar

Question

I have searching to solve this problem for two days and I did not find solution. Firstly I wanted to build fat-jar, then I gave up on that it looked more complicated so I started building normal executable jar. I am building some program inside NetBeans 8.2 with Gradle plugin( http://plugins.netbeans.org/plugin/44510/gradle-support )

My project structure is like this:

Project Structure

I am relatively new to Gradle I am using it less then one month. My build.gradle looks like this:

repositories {
   mavenCentral()
}

dependencies {
    // TODO: Add dependencies here ..
//    //   http://www.gradle.org/docs/current/userguide/dependency_management.html#sec:how_to_declare_your_dependencies
//    testCompile group: 'junit', name: 'junit', version: '4.10'

    // https://mvnrepository.com/artifact/org.apache.poi/poi
    compile group: 'org.apache.poi', name: 'poi', version: '3.16'

    // https://mvnrepository.com/artifact/org.apache.poi/poi-ooxml
    compile group: 'org.apache.poi', name: 'poi-ooxml', version: '3.16'

    // https://mvnrepository.com/artifact/org.apache.pdfbox/pdfbox
    compile group: 'org.apache.pdfbox', name: 'pdfbox', version: '2.0.6'


}

apply plugin: 'java'


mainClassName = "paket.Glavna"

jar {
    from {
        (configurations.runtime).collect {
            it.isDirectory() ? it : zipTree(it)
        }
    }
    manifest {
        attributes("Main-Class": "Glavna" )
    }
}

Now, I cant get it working to make executable jar. I think i have traced problem that there isnt path to main class in jar but I dont know why it isnt adding it. Error i get is:

Error: Could not find or load main class DnevniIzvestajG-1.0.jar

jar runs with (inside Glavna class is main): java -cp projectname.jar paket.Glavna

Also I have tried running manifest-addition but taht also didnt add link to main class.

Answer 1

Try adding a package to the class with main() method.

jar {
    archiveName = 'Glavna.jar'

    manifest {attributes 'Main-Class': 'paket.Glavna'}

    from(configurations.compile.collect { it.isDirectory() ? it : zipTree(it) }) {}
}

Building a fat jar like this is not preferable, try the Application plugin

Answer 2

I use below way to add all dependencies in.jar of gradle project.

build.gradle :-

jar {
    manifest {
        attributes(
                'Main-Class': 'com.main.MainClass'
        )
    }

 duplicatesStrategy = DuplicatesStrategy.INCLUDE
 from { configurations.compileClasspath.collect { it.isDirectory() ? it : zipTree(it) } }

}