init

src/main/java/com/tailbet/util/JwtUtil.java

@@ -0,0 +1,93 @@
+package com.tailbet.util;
+
+import io.jsonwebtoken.Claims;
+import io.jsonwebtoken.Jwts;
+import io.jsonwebtoken.security.Keys;
+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;
+
+/**
+ * JWT工具类
+ */
+@Component
+public class JwtUtil {
+
+    @Value("${jwt.secret}")
+    private String secret;
+
+    @Value("${jwt.expiration}")
+    private Long expiration;
+
+    private SecretKey getSigningKey() {
+        byte[] keyBytes = secret.getBytes(StandardCharsets.UTF_8);
+        return Keys.hmacShaKeyFor(keyBytes);
+    }
+
+    /**
+     * 生成Token
+     */
+    public String generateToken(Long userId, String username) {
+        Map<String, Object> claims = new HashMap<>();
+        claims.put("userId", userId);
+        claims.put("username", username);
+        return createToken(claims, username);
+    }
+
+    private String createToken(Map<String, Object> claims, String subject) {
+        Date now = new Date();
+        Date expirationDate = new Date(now.getTime() + expiration);
+
+        return Jwts.builder()
+                .claims(claims)
+                .subject(subject)
+                .issuedAt(now)
+                .expiration(expirationDate)
+                .signWith(getSigningKey())
+                .compact();
+    }
+
+    /**
+     * 解析Token
+     */
+    public Claims parseToken(String token) {
+        return Jwts.parser()
+                .verifyWith(getSigningKey())
+                .build()
+                .parseSignedClaims(token)
+                .getPayload();
+    }
+
+    /**
+     * 获取用户ID
+     */
+    public Long getUserId(String token) {
+        Claims claims = parseToken(token);
+        return claims.get("userId", Long.class);
+    }
+
+    /**
+     * 获取用户名
+     */
+    public String getUsername(String token) {
+        Claims claims = parseToken(token);
+        return claims.getSubject();
+    }
+
+    /**
+     * 验证Token是否过期
+     */
+    public boolean isTokenExpired(String token) {
+        try {
+            Claims claims = parseToken(token);
+            return claims.getExpiration().before(new Date());
+        } catch (Exception e) {
+            return true;
+        }
+    }
+}