1. https://blog.youkuaiyun.com/shfqbluestone/article/details/21242323 https://blog.youkuaiyun.com/iteye_21091/article/details/82513844 3.java keytool证书工具使用小结 http://www.micmiu.com/lang/java/keytool-start-guide/?tdsourcetag=s_pcqq_aiomsg