/**
* 提供接收和推送给公众平台消息的加解密接口(UTF8编码的字符串).
*
*
*
*
* 说明:异常java.security.InvalidKeyException:illegal Key Size的解决方案
*
*
* http://www.oracle.com/technetwork/java/javase/downloads/jce-7-download-432124.html
*
*
*
*
*/
参考https://www.cnblogs.com/guoziyi/p/6252211.html?utm_source=itdadao&utm_medium=referral