From 5d7b65670282a4fad015e37d567cfa171b162052 Mon Sep 17 00:00:00 2001
From: huliguo <2023611923@qq.com>
Date: 星期二, 20 五月 2025 12:25:19 +0800
Subject: [PATCH] 基础代码
---
pt-errand/src/main/java/com/ruoyi/errand/utils/TokenBlacklistService.java | 93 ++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 93 insertions(+), 0 deletions(-)
diff --git a/pt-errand/src/main/java/com/ruoyi/errand/utils/TokenBlacklistService.java b/pt-errand/src/main/java/com/ruoyi/errand/utils/TokenBlacklistService.java
new file mode 100644
index 0000000..33fda55
--- /dev/null
+++ b/pt-errand/src/main/java/com/ruoyi/errand/utils/TokenBlacklistService.java
@@ -0,0 +1,93 @@
+package com.ruoyi.errand.utils;
+
+
+
+import io.jsonwebtoken.Claims;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.data.redis.core.RedisTemplate;
+import org.springframework.scheduling.annotation.Scheduled;
+import org.springframework.stereotype.Service;
+
+import java.util.Date;
+
+import java.util.concurrent.TimeUnit;
+
+
+@Service
+@Slf4j
+public class TokenBlacklistService {
+ private final RedisTemplate redisTemplate;
+
+ // 使用构造器注入替代字段注入
+ @Autowired
+ public TokenBlacklistService(RedisTemplate redisTemplate) {
+ this.redisTemplate = redisTemplate;
+ }
+
+ // 黑名单键前缀
+ private static final String BLACKLIST_KEY_PREFIX = "token:blacklist:";
+
+ // 过期时间缓冲（防止刚好过期时还在黑名单中）
+ private static final long EXPIRATION_BUFFER_MS = 30000; // 30秒
+
+ /**
+ * 添加Token到黑名单
+ * @param token JWT Token
+ */
+ public void addToBlacklist(String token) {
+ try {
+ String realToken=token.substring(4);
+ Claims claims = JwtUtil.parseJWT(realToken);
+ Date expiration = claims.getExpiration();
+ long ttl = expiration.getTime() - System.currentTimeMillis() + EXPIRATION_BUFFER_MS;
+
+ if (ttl > 0) {
+ redisTemplate.opsForValue().set(
+ BLACKLIST_KEY_PREFIX + realToken,
+ "1",
+ ttl,
+ TimeUnit.MILLISECONDS
+ );
+ log.info("Token已加入黑名单，剩余有效期: {} 毫秒", ttl);
+ }
+ } catch (Exception e) {
+ log.error("添加Token到黑名单失败", e);
+ }
+ }
+
+ /**
+ * 检查Token是否在黑名单中
+ * @param token JWT Token
+ * @return true-在黑名单中，false-不在黑名单中
+ */
+ public boolean isBlacklisted(String token) {
+ Boolean exists = redisTemplate.hasKey(BLACKLIST_KEY_PREFIX + token);
+ return exists != null && exists;
+ }
+
+ /**
+ * 清理过期Token（Redis会自动过期，此方法可选保留）
+ */
+ @Scheduled(fixedRate = 2, timeUnit = TimeUnit.HOURS)
+ public void cleanupExpiredTokens() {
+ log.info("Token黑名单清理任务开始执行");
+ // Redis有自动过期机制，此方法主要做日志记录
+ log.info("Token黑名单清理任务完成（Redis自动处理过期）");
+ }
+
+ /**
+ * 检查JWT Token是否过期
+ * @param token JWT Token字符串
+ * @return true-已过期，false-未过期
+ */
+ public boolean isTokenExpired(String token) {
+ try {
+ Claims claims = JwtUtil.parseJWT(token);
+ return claims.getExpiration().before(new Date());
+ } catch (Exception e) {
+ // 如果解析过程中出现异常（如Token无效、已过期等），视为已过期
+ return true;
+ }
+ }
+}
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