mySql存储表情

String nickName = snsUserInfo.getNickname();
//对微信用户昵称进行编码保存，解决昵称中有图片的问题

nickName = URLEncoder.encode(nickName, "utf-8");

//对昵称进行解码显示
String nickName = URLDecoder.decode(merchantUser.getNickName(), "utf-8");

备注：微信昵称16个汉字