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package com.unilife.utils;
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import cn.hutool.core.date.DateTime;
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import cn.hutool.jwt.JWT;
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import cn.hutool.jwt.JWTUtil;
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import lombok.extern.slf4j.Slf4j;
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import org.springframework.beans.factory.annotation.Value;
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import org.springframework.stereotype.Component;
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import java.util.HashMap;
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import java.util.Map;
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@Component
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@Slf4j
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public class JwtUtil {
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@Value("${jwt.secret}")
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private String secret;
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@Value("${jwt.expiration}")
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public long expiration;
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public String generateToken(Long id) {
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DateTime now = DateTime.now();
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DateTime expireTime = new DateTime(now.getTime() + expiration * 1000);
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Map<String, Object> payload = new HashMap<>();
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payload.put("userId", id);
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payload.put("created", now.getTime());
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payload.put("exp", expireTime.getTime() / 1000); // JWT标准过期时间字段（秒）
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return JWTUtil.createToken(payload, secret.getBytes());
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}
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public boolean verifyToken(String token) {
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try {
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// 验证token签名
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JWTUtil.verify(token, secret.getBytes());
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// 验证过期时间
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JWT jwt = JWTUtil.parseToken(token);
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Object expObj = jwt.getPayload("exp");
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if (expObj != null) {
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long exp = Long.parseLong(expObj.toString());
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long currentTime = System.currentTimeMillis() / 1000;
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if (currentTime > exp) {
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log.debug("Token已过期: exp={}, current={}", exp, currentTime);
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return false;
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}
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}
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return true;
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} catch (Exception e) {
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log.debug("Token验证失败: {}", e.getMessage());
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return false;
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}
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}
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public Long getUserIdFromToken(String token) {
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try {
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// 先验证token是否有效
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if (!verifyToken(token)) {
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return null;
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}
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return Long.valueOf(JWTUtil.parseToken(token).getPayload("userId").toString());
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} catch (Exception e) {
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log.debug("从Token获取用户ID失败: {}", e.getMessage());
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return null;
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}
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}
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}
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