java.io.IOException: The output jar is empty. Did you specify the proper '-keep' options?

標籤：install   maven   資訊   jar   打包   

執行Maven Install打包的時候，出現以下錯誤資訊：

 [proguard] java.io.IOException: The output jar is empty. Did you specify the proper ‘-keep‘ options? [proguard]     at proguard.shrink.Shrinker.execute(Shrinker.java:171) [proguard]     at proguard.ProGuard.shrink(ProGuard.java:297) [proguard]     at proguard.ProGuard.execute(ProGuard.java:113) [proguard]     at proguard.ProGuard.main(ProGuard.java:538)

這是因為’-keep’選項使用的不正確，把所有的類都過慮掉了。

java.io.IOException: The output jar is empty. Did you specify the proper '-keep' options?