转自:https://blog.youkuaiyun.com/z_k_h/article/details/80340451
procyon-decompiler jar包地址:https://bitbucket.org/mstrobel/procyon/downloads/?tab=downloads
// 反编译jar包
java -jar procyon-decompiler-0.5.36.jar -jar xxxx.jar -o out1
// 反编译class文件
java -jar procyon-decompiler-0.5.36.jar xxx.class -o out2