在JAR中选择性地包含依赖项 [英] Selectively include dependencies in JAR
问题描述
我有一个用Scala编写的库，该库使用Bouncy Castle并具有大量依赖项.当我滚动一个jar时，我可以滚动一个具有 all 依赖项(包括scala)的胖" jar，它的大小大约为19 MB，或者我可以滚动一个瘦的jar，而它不t具有依赖性，但只有几百KB.
I have a library that I wrote in Scala that uses Bouncy Castle and has a whole bunch of dependencies. When I roll a jar, I can either roll a "fat" jar that has all the dependencies (including scala), which weighs in around 19 MB, or I can roll a skinny jar, which doesn't have dependencies, but is only a few hundred KB.
问题是我需要在我的库中包含Bouncy Castle类/jar，因为如果运行时不在类路径上，则会抛出各种异常.
The problem is that I need to include the Bouncy Castle classes/jar with my library, because if its not on the classpath at runtime, all kinds of exceptions get thrown.
所以，我认为理想的情况是，是否可以通过某种方式使Maven或SBT在要获取的jar中包含 some 而不是 all 依赖项滚.在编译时需要一些依赖关系，而在运行时则需要不需要，例如Scala标准库.有什么办法可以做到这一点?
So, I think the ideal situation is if there is some way that I can get either Maven or SBT to include some but not all dependencies in the jar that gets rolled. Some dependencies are needed at compile-time, but not at run time, such as the Scala standard libraries. Is there some way to get that to happen?
谢谢！
推荐答案
I would try out the sbt proguard plugin from https://github.com/nuttycom/sbt-proguard-plugin . It should be able to weed out the classes that are not in use.
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