JSON Web Token (JWT)
Abstract
   JSON Web Token (JWT) is a compact, URL-safe means of representing   claims to be transferred between two parties.  The claims in a JWT   are encoded as a JSON object that is used as the payload of a JSON   Web Signature (JWS) structure or as the plaintext of a JSON Web   Encryption (JWE) structure, enabling the claims to be digitally   signed or integrity protected with a Message Authentication Code   (MAC) and/or encrypted.
Status of This Memo
   This is an Internet Standards Track document.
   This document is a product of the Internet Engineering Task Force   (IETF).  It represents the consensus of the IETF community.  It has   received public review and has been approved for publication by the   Internet Engineering Steering Group (IESG).  Further information on   Internet Standards is available in Section 2 of RFC 5741.
   Information about the current status of this document, any errata,   and how to provide feedback on it may be obtained at   http://www.rfc-editor.org/info/rfc7519.

{    "code": 0,    "msg": "成功",    "data": {        "user": {            "id": 1,            "userName": "admin",            "authStatus": 1,            "role": 1,            "email": "admin@qingclass.com",            "phone": "17196699712",            "createTime": "2018-07-31 16:27:50",            "modifyTime": "2018-08-06 10:18:01"        }    }}

public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {        String user = request.getHeader("user");        if (user != null && !StringUtils.isEmpty(user)) {            request.setAttribute(AuthenUser.class.getName(), JSON.parseObject(URLDecoder.decode(user, "utf-8"), AuthenUser.class));            return true;        } else {            return this.print(request, response, ResponseCode.NEED_LOGIN);        }    }