直接上命令
0.下载arthas
1.获取类加载器
输入 sc -d *KillPestProtocol | grep classLoaderHash
输出 classLoaderHash 56cbfb61
2.将源码拖入linux某目录,编译class
mc -c 56cbfb61 /mnt/arthas/source/KillPestProtocol.java -d /mnt/arthas/class
3.加载class
redefine /mnt/arthas/class/com/stkj/iot/netty/protocol/killpets/v00010001/KillPestProtocol.class