From 1acf9a48021d0af1d81fdf3ed8fcf8dffd020f6b Mon Sep 17 00:00:00 2001
From: hongjli <3117313295@qq.com>
Date: 星期二, 15 四月 2025 14:20:51 +0800
Subject: [PATCH] 登录，注册，获取用户信息---接口
---
src/main/java/com/weiwojc/utils/JwtUtils.java | 109 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 109 insertions(+), 0 deletions(-)
diff --git a/src/main/java/com/weiwojc/utils/JwtUtils.java b/src/main/java/com/weiwojc/utils/JwtUtils.java
new file mode 100644
index 0000000..4d4b673
--- /dev/null
+++ b/src/main/java/com/weiwojc/utils/JwtUtils.java
@@ -0,0 +1,109 @@
+package com.weiwojc.utils;
+
+import com.weiwojc.model.entity.User;
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.security.Keys;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+import javax.crypto.SecretKey;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+import java.util.HashMap;
+import java.util.Map;
+
+@Component
+@RequiredArgsConstructor
+public class JwtUtils {
+
+ private static final long SERVER_START_TIME = System.currentTimeMillis();
+
+ @Value("${jwt.secret}")
+ private String secret;
+
+ @Value("${jwt.expiration}")
+ private Long expiration;
+
+ private final TokenBlacklistManager tokenBlacklistManager;
+
+ private SecretKey getSigningKey() {
+ byte[] keyBytes = secret.getBytes(StandardCharsets.UTF_8);
+ return Keys.hmacShaKeyFor(keyBytes);
+ }
+
+ public String generateToken(User user) {
+ Map<String, Object> claims = new HashMap<>();
+ claims.put("userId", user.getUserId());
+ claims.put("username", user.getUsername());
+ claims.put("instanceId", tokenBlacklistManager.getInstanceId());
+ claims.put("serverStartTime", SERVER_START_TIME);
+
+ return Jwts.builder()
+ .setClaims(claims)
+ .setSubject(user.getUsername())
+ .setIssuedAt(new Date())
+ .setExpiration(new Date(System.currentTimeMillis() + expiration * 1000))
+ .signWith(getSigningKey())
+ .compact();
+ }
+
+ public Claims getClaimsFromToken(String token) {
+ return Jwts.parserBuilder()
+ .setSigningKey(getSigningKey())
+ .build()
+ .parseClaimsJws(token)
+ .getBody();
+ }
+
+ public String getUsernameFromToken(String token) {
+ return getClaimsFromToken(token).getSubject();
+ }
+
+ public Long getUserIdFromToken(String token) {
+ return getClaimsFromToken(token).get("userId", Long.class);
+ }
+
+ public String getInstanceIdFromToken(String token) {
+ return getClaimsFromToken(token).get("instanceId", String.class);
+ }
+
+ public Date getExpirationDateFromToken(String token) {
+ return getClaimsFromToken(token).getExpiration();
+ }
+
+ public boolean isTokenExpired(String token) {
+ Date expiration = getExpirationDateFromToken(token);
+ return expiration.before(new Date());
+ }
+
+ public boolean validateToken(String token) {
+ try {
+ Claims claims = getClaimsFromToken(token);
+
+ if (isTokenExpired(token)) {
+ return false;
+ }
+
+ String tokenInstanceId = claims.get("instanceId", String.class);
+ String currentInstanceId = tokenBlacklistManager.getInstanceId();
+ if (!currentInstanceId.equals(tokenInstanceId)) {
+ return false;
+ }
+
+ Long tokenServerStartTime = claims.get("serverStartTime", Long.class);
+ if (tokenServerStartTime == null || tokenServerStartTime != SERVER_START_TIME) {
+ return false;
+ }
+
+ if (tokenBlacklistManager.isBlacklisted(token)) {
+ return false;
+ }
+
+ return true;
+ } catch (Exception e) {
+ return false;
+ }
+ }
+}
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