Java 怎么维护小程序3rdSessionId

密过程微信服务器完成，解密过程在小程序和自悉模身服务器完睁衡缓成，即由 encryptData 得到如下数据拦渣:

{

"openId": "OPENID",

"nickName": "NICKNAME",

"gender": GENDER,

"city": "CITY",

"province": "PROVINCE",

"country": "COUNTRY",

"avatarUrl": "AVATARURL",

"unionId": "UNIONID",

"watermark":

{

"appid":"APPID",

"timestamp":TIMESTAMP

3rd_session就是后台服务乱耐器生成的随机数。

后台服务器可以备悉调用head -n 80 /dev/urandom | tr -dc A-Za-z0-9 | head -c 168这样的shell 命令获取168位仿陪乎的随机字符串。

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