JWTUtil.java

package com.zhuhai;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTVerifier;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.exceptions.JWTCreationException;
import com.auth0.jwt.exceptions.JWTVerificationException;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.auth0.jwt.interfaces.Verification;

import java.util.Date;

/**
 * Created with IntelliJ IDEA.
 * Date: 2019/1/30
 * Time: 15:46
 *
 * @author: zhuhai
 */
public class JWTUtil {

    private static final long EXPIRE_TIME = 100000L;
    private static final String SECRET = "sdjiew235459#@%$#%^$^sfj23ivgj";

    /**
     * 生成token
     * @param secret
     * @return
     */
    public static String sign(String secret) {

        try {
            Algorithm algorithm = Algorithm.HMAC256(secret);
            Date date = new Date(System.currentTimeMillis() + EXPIRE_TIME);
            String sign = JWT.create().withClaim("accountId", 1L).withExpiresAt(date).sign(algorithm);
            return sign;
        } catch (JWTCreationException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static boolean verify(String token, String secret, Long accountId) {
        try {
            Algorithm algorithm = Algorithm.HMAC256(secret);
            Verification verification = JWT.require(algorithm);
            JWTVerifier verifier = verification.withClaim("accountId", accountId).build();
            verifier.verify(token);
            return true;
        } catch (IllegalArgumentException e) {
            e.printStackTrace();
        } catch (JWTVerificationException e) {
            e.printStackTrace();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return false;
    }

    public static Long getAccountId(String token) {
        DecodedJWT decode = JWT.decode(token);
        Long accountId = decode.getClaim("accountId").asLong();
        return accountId;
    }



    public static void main(String[] args) {

        //String token = sign(SECRET);
        //System.out.println(token);
        String token = "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJleHAiOjE1NDg4NDIzNTAsImFjY291bnRJZCI6Mn0.4wQYs8UZlZXYrVNTZcUuZmgiDb8_vUd2wKz1CVB82Gg";
        Long accountId = getAccountId(token);
        boolean verify = verify(token, SECRET, accountId);
        System.out.println(verify);


    }



}