SpringBoot集成JWT实现用户注册、登录、鉴权功能

数据库

用户表

DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
    `id` int(11) NOT NULL AUTO_INCREMENT,
    `username` varchar(255) NOT NULL,
    `password` varchar(255) NOT NULL,
    `salt` varchar(255) NOT NULL,
    `age` int(3) NOT NULL,
    `create_time` datetime DEFAULT NULL,
    `update_time` datetime DEFAULT NULL,
    PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4;

集成jwt

pom.xml集成jwt组件

<dependency>
   <groupId>io.jsonwebtoken</groupId>
   <artifactId>jjwt</artifactId>
   <version>0.9.1</version>
</dependency>

jwt工具类

import io.jsonwebtoken.Jwt;
import io.jsonwebtoken.JwtBuilder;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class JwtUtil {
   
    private static final String jwtToken = "1234567890p[]l;'";

    public static String createToken(Integer userId) {
   
        Map<String, Object> claims = new HashMap<>();
        claims.put("userId", userId);
        JwtBuilder jwtBuilder = Jwts.builder()
                // 设置有效载荷
                .setClaims(claims)
                // 设置签发时间
                .setIssuedAt(new Date())
                // 设置过期时间
                .setExpiration(new Date(System.currentTimeMillis() + 24 * 60 * 60 * 60 * 1000))
                // 采用HS256方式签名，key就是用来签名的秘钥
                .signWith(SignatureAlgorithm.HS256, jwtToken);
        String token = jwtBuilder.compact();
        return token;
    }

    public static Map<String, Object> checkToken(String token) {
   
        try {
   
            Jwt parse = Jwts.parser().