How to add Transitive dependancies to local jar ** I don't want to create fat jar**

Help/Discuss
1

Hi,

I have generated jar file with below task. and this jar file I will be using as a local jar to another project.

 
jar {
    from('src/main/resources') {
        include '*.properties'
    }
    manifest {
        attributes(
                'Main-Class': "main",
                'Built-By'       : System.properties['user.name'],
                'Build-Timestamp': new java.text.SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ").format(new Date()),
                'Build-Revision' : versioning.info.commit,
                'Created-By'     : "Gradle ${gradle.gradleVersion}",
                'Build-Jdk'      : "${System.properties['java.version']} (${System.properties['java.vendor']} ${System.properties['java.vm.version']})",
                'Build-OS'       : "${System.properties['os.name']} ${System.properties['os.arch']} ${System.properties['os.version']}",
                "Class-Path": configurations.compile.collect { it.getName() }.join(' ')
        )
    }
}

I have added as dependency in build.gradle in another gradle project as below

compile files('libs/abc-0.0.10-SNAPSHOT.jar')

However, it is not downloading dependancies from mavencentral present in the jar. I have to all dependencies again in new gradle project.

So am I missing anything while creating jar?? or do i need to add any configurations to download from maven central??

Please Note: ** I don’t want to create fat jar**, as the size of jar is huge.

2

This is a file dependency. A file dependency is specifically a binary file on disk without any metadata such as dependencies.

There’s no way to download dependencies from just a JAR file. If you just have a JAR file, you must declare any dependencies that it needs.

You need metadata in order to have dependencies resolved from Maven Central. This metadata is normally contained in a POM file as there are no dependencies from Maven Central present in the JAR file itself.

It is not possible to provide this POM with a file dependency or flatDir repository even if you publish it with the JAR file. You would need to have a folder on disk that is structured and configured as a Maven repository, even if it is on your local file system.

3

Thanks James.

But how the jars downloaded from maven-repository are downloading their transitive dependancies?
Any idea how to create maven repository structure along with POM

4

It’s not just the JARs that are downloaded. The POM file is downloaded for every resolved dependency from a Maven repository. The POM contains the dependencies. This continues recursively for each dependency encountered.

This is covered in the Maven Publishing section of the user guide.