Spring Boot 整合 JWT的方法

<!-- JWT相关 -->
<dependency>
 <groupId>io.jsonwebtoken</groupId>
 <artifactId>jjwt</artifactId>
 <version>0.7.0</version>
</dependency>

package com.haitaiinc.clinicpathservice.utils;

import com.haitaiinc.clinicpathservice.entity.UserInfo;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.util.StringUtils;

import java.util.Date;

public class JwtUtils {
 public static final String SUBJECT = "admin";

 /**
  * 过期时间，毫秒，一周
  */
 public static final long EXPIRE = 1000 * 60 * 60 * 24 * 7;

 /**
  * 秘钥
  */
 public static final String APPSECRET = "haitaiinc";

 /**
  * 生成jwt
  *
  * @param userInfo
  * @return
  */
 public static String geneJsonWebToken(UserInfo userInfo) {

  if (userInfo == null || StringUtils.isEmpty(userInfo.getUserId()) || StringUtils.isEmpty(userInfo.getUserName())) {
   return null;
  }
  String token = Jwts.builder().setSubject(SUBJECT)
    .claim("id", userInfo.getUserId())
    .claim("name", userInfo.getUserName())
    .setIssuedAt(new Date())
    .setExpiration(new Date(System.currentTimeMillis() + EXPIRE))
    .signWith(SignatureAlgorithm.HS256, APPSECRET).compact();

  return token;
 }


 /**
  * 校验token
  *
  * @param token
  * @return
  */
 public static Claims checkJWT(String token) {

  try {
   final Claims claims = Jwts.parser().setSigningKey(APPSECRET).
     parseClaimsJws(token).getBody();
   return claims;

  } catch (Exception e) {
  }
  return null;
 }
}

package com.haitaiinc.clinicpathservice;

import com.haitaiinc.clinicpathservice.entity.UserInfo;
import com.haitaiinc.clinicpathservice.utils.JwtUtils;
import io.jsonwebtoken.Claims;
import org.junit.jupiter.api.Test;

public class CommonTest {

 @Test
 public void testGeneJwt() {
  UserInfo user = new UserInfo();
  user.setUserId("admin");
  user.setUserName("管理员");

  String token = JwtUtils.geneJsonWebToken(user);
  System.out.println(token);

 }


 @Test
 public void testCheck() {
  String token = "eyJhbGciOiJIUzI1NiJ9.eyJzdWIiOiJhZG1pbiIsImlkIjoiYWRtaW4iLCJuYW1lIjoi566h55CG5ZGYIiwiaWF0IjoxNTc3NTU3MDU1LCJleHAiOjE1NzgxNjE4NTV9.VrrKtCTnxVN76JhpyIusCGq9Wj89wLor0OqIJ6s0zXo";
  Claims claims = JwtUtils.checkJWT(token);
  if (claims != null) {
   String id = (String) claims.get("id");
   String name = (String) claims.get("name");
   System.out.println(id);
   System.out.println(name);
  } else {
   System.out.println("非法token");
  }
 }
}