How to Create a JAR with Dependencies in Gradle

Creating a single executable JAR/fat JAR can be pretty useful. We can do something like this.

java -jar foobar.jar

In Maven, we need to write a pretty verbose XML to do that as shown in my previous blog. In Gradle, this task can be easily achieved in just few lines as shown in the example below.

apply plugin: 'java'

sourceCompatibility = 1.6
targetCompatibility = 1.6

defaultTasks = ['clean', 'jar']

dependencies {
   compile 'org.slf4j:slf4j-api:1.6.2'
   compile 'ch.qos.logback:logback-core:0.9.30'
   compile 'ch.qos.logback:logback-classic:0.9.30'
   compile 'javax.servlet:servlet-api:2.5'
   compile 'org.eclipse.jetty.aggregate:jetty-all:7.5.4.v20111024' 
   
   testCompile 'junit:junit:4.+'
   testCompile 'org.mockito:mockito-core:1.8.5'
}

jar {
   from { configurations.compile.collect { it.isDirectory() ? it : zipTree(it) } }
   manifest { attributes 'Main-Class': 'test.Main' }
}