将依赖的jar包inlining到另外一个jar包的ant插件

https://code.google.com/p/jarjar/

 

Jar Jar Links is a utility that makes it easy to repackage Java libraries and embed them into your own distribution. This is useful for two reasons:

• You can easily ship a single jar file with no external dependencies.

• You can avoid problems where your library depends on a specific version of a library, which may conflict with the dependencies of another library.

spring中https://github.com/spring-projects/spring-framework/blob/3.2.x/build.gradle构建spring-core包，将asm和cglib包inling到spring-core包中。

        task asmRepackJar(type: Jar) { repackJar ->

                repackJar.baseName = "spring-asm-repack"

                repackJar.version = asmVersion

 

                doLast() {

                        project.ant {

                                taskdef name: "jarjar", classname: "com.tonicsystems.jarjar.JarJarTask",

                                        classpath: configurations.jarjar.asPath

                                jarjar(destfile: repackJar.archivePath) {

                                        configurations.asm.each { originalJar ->

                                                zipfileset(src: originalJar)

                                        }

                                        rule(pattern: "org.objectweb.asm.**", result: "org.springframework.asm.@1")

                                }

                        }

                }

        }

 

        task cglibRepackJar(type: Jar) { repackJar ->

                repackJar.baseName = "spring-cglib-repack"

                repackJar.version = cglibVersion

 

                doLast() {

                        project.ant {

                                taskdef name: "jarjar", classname: "com.tonicsystems.jarjar.JarJarTask",

                                        classpath: configurations.jarjar.asPath

                                jarjar(destfile: repackJar.archivePath) {

                                        configurations.cglib.each { originalJar ->

                                                zipfileset(src: originalJar)

                                        }

                                        // repackage net.sf.cglib => org.springframework.cglib

                                        rule(pattern: "net.sf.cglib.**", result: "org.springframework.cglib.@1")

                                        // as mentioned above, transform cglib"s internal asm dependencies from

                                        // org.objectweb.asm => org.springframework.asm. Doing this counts on the

                                        // the fact that Spring and cglib depend on the same version of asm!

                                        rule(pattern: "org.objectweb.asm.**", result: "org.springframework.asm.@1")

                                }

                        }

                }

        }