Create a gradle build file, call it deps.gradle, as follows:
apply plugin: 'java'
repositories {
mavenCentral()
}
dependencies {
compile group: 'org.glassfish.jersey.bundles', name: 'jaxrs-ri', version: '2.23.1'
}
task copyDependencies(type: Copy) {
from configurations.compile
into 'dependencies'
}
Then call gradle -b deps.gradle copyDependencies
and it'll put all the dependencies into the dependencies/
directory.