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"
)
}
}
}
}