04-jwt工具类的封装

package com.study.utils;

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

import java.util.Calendar;
import java.util.Map;

public class JWTUtils {

    private static final String SING = "qweqw&*(%&*";

    /**
     * 生成token
     */
    public static String getToken(Map map){
        Calendar instance = Calendar.getInstance();
        instance.add(Calendar.DATE, 5);//时长五天

        JWTCreator.Builder builder = JWT.create();

        //设置jwt的header可以不设置，有默认值

        //设置jwt的payload
        map.forEach((k,v)->{
            builder.withClaim(k,v);
        });

        //设置jwt的超时时间和sign
        String token = builder.withExpiresAt(instance.getTime())
                .sign(Algorithm.HMAC256(SING));

        return token;
    }

    /**
     * 验证token的合法性
     */
    public static void verify(String token){
        JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
    }

    /**
     * 获取token信息方法
     */
    public static DecodedJWT getTokenInfo(String token){
        DecodedJWT verify = JWT.require(Algorithm.HMAC256(SING)).build().verify(token);
        return verify;
    }
}