JWT实例TokenUtils

/**  
* 
Title: TokenUtils.java
  
* 
Description: 
  
* 
Copyright: Copyright (c) 2017
  
* 
Company: www.yky.com
  
* @author wangzhj
* @date 2020年4月8日  
* @version 1.0  
*/  
 package com.cjs.example.controller;

import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import com.auth0.jwt.JWT;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.auth0.jwt.interfaces.JWTVerifier;

/**  
* 
Title: TokenUtils
  
* 
Description: 
  
* @author wangzhj 
* @date 2020年4月8日  
*/
public class TokenUtils {
    //设置过期时间
    private static final long EXPIRE_DATE=30*60*100000;
    //token秘钥
    private static final String TOKEN_SECRET = "ZCfasfhuaUUHufguGuwu2020BQWE";

    public static String token (String username,String password){

        String token = "";
        try {
            //过期时间
            Date date = new Date(System.currentTimeMillis()+EXPIRE_DATE);
            //秘钥及加密算法
            Algorithm algorithm = Algorithm.HMAC256(TOKEN_SECRET);
            //设置头部信息
            Map header = new HashMap<>();
            header.put("typ","JWT");
            header.put("alg","HS256");
            //携带username，password信息，生成签名
            token = JWT.create()
                    .withHeader(header)
                    .withClaim("username",username)
                    .withClaim("password",password).withExpiresAt(date)
                    .sign(algorithm);
        }catch (Exception e){
            e.printStackTrace();
            return  null;
        }
        return token;
    }

    public static boolean verify(String token){
        /**
         * @desc   验证token，通过返回true
         * @params [token]需要校验的串
         **/
        try {
            Algorithm algorithm = Algorithm.HMAC256(TOKEN_SECRET);
            JWTVerifier verifier = JWT.require(algorithm).build();
            DecodedJWT jwt = verifier.verify(token);
            return true;
        }catch (Exception e){
            e.printStackTrace();
            return  false;
        }
    }
    public static void main(String[] args) {
       String username ="zhangsan";
        String password = "123";
        String token = token(username,password);
        System.out.println(token);
        boolean b = verify("eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJwYXNzd22yZCI6IjEyMyIsImV4cCI6MTU3ODE5NzQxMywidXNlcm5hbWUiOiJ6aGFuZ3NhbiJ9.IyTZT0tISQQZhGhsNuaqHGV8LD7idjUYjn3MGbulmJg");
        System.out.println(b);
        
        System.out.println(verify("eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJwYXNzd29yZCI6IjEyMyIsImV4cCI6MTU4NjUwNDI0MiwidXNlcm5hbWUiOiJ6aGFuZ3NhbiJ9.lLEMQCcIfajAXUeAInMMMcD5fhvhxSAsjW0gcJUtN3w"));

        
        System.out.println(verify("eyJ0eXAiOiJKV1QiLCJhbGciOiJIUzI1NiJ9.eyJwYXNzd29yZCI6IjEyMyIsImV4cCI6MTU4NjMyODE5NSwidXNlcm5hbWUiOiJ6aGFuZ3NhbiJ9.z9yGgLXWoRsFLwZH8-N8zyqI9XxeubJRy0XD9pOoRo8"));
    }


 public static String getToken(String username,String password){
        return JWT.create().withAudience(username)
            .sign(Algorithm.HMAC256(password));
    }
    
    /* public static boolean verify2(String token) {
        String userId;
        try {
            userId = JWT.decode(token).getAudience().get(0);
        } catch (JWTDecodeException j) {
            throw new RuntimeException("401");
        }
        User user = userService.findUserById(userId);
        if (user == null) {
            throw new RuntimeException("用户不存在，请重新登录");
        }
        // 验证 token
        JWTVerifier jwtVerifier = JWT.require(Algorithm.HMAC256(user.getPassword())).build();
        try {
            jwtVerifier.verify(token);
        } catch (JWTVerificationException e) {
            throw new RuntimeException("401");
        }
        return true;
    }*/
}