@GetMapping("token")
    public Object token() {
        HashMap<String, Object> tokenMap = new HashMap<>();
        tokenMap.put("userName", "合商圈");
        tokenMap.put("id", 1);
        String token = JwtUtils.generateJwt(tokenMap, tokenKey);
        return Result.suc(token);
    }

package com.example.demo12.common;
import io.jsonwebtoken.Claims;
import io.jsonwebtoken.Jwts;
import io.jsonwebtoken.SignatureAlgorithm;
import org.springframework.beans.factory.annotation.Value;
import java.util.Date;
import java.util.Map;
/**
 * token生成工具
 */
public class JwtUtils {
    @Value("${token.key}")
    private String tokenKey;
    /**
     * 有效期，單位是毫秒
     */
    private static Long expire = 259200000L;
    /**
     * 生成JWT令牌
     */
    public static String generateJwt(Map<String, Object> claims, String signKey) {
        String jwt = Jwts.builder()
                .addClaims(claims)
                .signWith(SignatureAlgorithm.HS256, signKey)
                .setExpiration(new Date(System.currentTimeMillis() + expire))
                .compact();
        return jwt;
    }
    /**
     * 解析JWT令牌
     */
    public static Claims parseJWT(String jwt, String signKey) {
        Claims claims = Jwts.parser()
                .setSigningKey(signKey)
                .parseClaimsJws(jwt)
                .getBody();
        return claims;
    }
}

package com.example.demo12.common;
import lombok.Data;
@Data
public class Result {
    private int code;
    private String msg;
    private Long total;
    private Object data;
    public static Result fail() {
        return result(400,"失敗",0L, null);
    }
    public static Result suc(Object data) {
        return result(200,"成功",0L, data);
    }
    public static Result suc(Object data, Long total) {
        return result(200,"成功",total, data);
    }
    private static Result result(int code, String msg, Long total, Object data) {
        Result res = new Result();
        res.setCode(code);
        res.setMsg(msg);
        res.setTotal(total);
        res.setData(data);
        return res;
    }
}