init: rebuild myplayer-backend

2025-11-13 11:10:07 +08:00
commit 575041905b
16 changed files with 1062 additions and 0 deletions
--- a/src/main/java/xin/merlin/myplayerbackend/utils/JwtUtil.java
+++ b/src/main/java/xin/merlin/myplayerbackend/utils/JwtUtil.java
@@ -0,0 +1,110 @@
+package xin.merlin.myplayerbackend.utils;
+
+import io.jsonwebtoken.*;
+import io.jsonwebtoken.security.Keys;
+import jakarta.annotation.PostConstruct;
+import lombok.RequiredArgsConstructor;
+import org.springframework.stereotype.Component;
+import xin.merlin.myplayerbackend.config.security.JwtProperties;
+
+
+import javax.crypto.SecretKey;
+import java.nio.charset.StandardCharsets;
+import java.util.Date;
+import java.util.UUID;
+
+@Component
+@RequiredArgsConstructor
+public class JwtUtil {
+
+    private final JwtProperties jwtProperties;
+
+    private SecretKey key;
+    private JwtParser jwtParser;
+
+    @PostConstruct
+    public void init() {
+        try {
+            // 从配置文件密钥生成 SecretKey
+            this.key = Keys.hmacShaKeyFor(jwtProperties.getSecret().getBytes(StandardCharsets.UTF_8));
+            this.jwtParser = Jwts.parser()
+                    .verifyWith(key)
+                    .build();
+        } catch (Exception e) {
+            throw new RuntimeException("JWT 密钥初始化失败，请检查配置文件 jwt.secret", e);
+        }
+    }
+
+    /**
+     * 生成 JWT Token
+     */
+    public String generateToken(String uAccount, Integer uId) {
+        Date now = new Date();
+        Date expireDate = new Date(now.getTime() + jwtProperties.getExpire() * 1000L);
+
+        return Jwts.builder()
+                .subject(uAccount)
+                .claim("id", uId)
+                .claim("account", uAccount)
+                .id(UUID.randomUUID().toString())
+                .issuedAt(now)
+                .expiration(expireDate)
+                .issuer(jwtProperties.getIssuer())
+                .signWith(key, Jwts.SIG.HS256) // JJWT 0.12.6推荐的写法
+                .compact();
+    }
+
+    /**
+     * 解析 Token 获取 Claims
+     */
+    public Claims getClaims(String token) {
+        try {
+            Jws<Claims> jws = jwtParser.parseSignedClaims(token);
+            System.out.println(jws.getPayload());
+            return jws.getPayload();
+        } catch (ExpiredJwtException e) {
+            throw new TokenExpiredException("Token 已过期", e);
+        } catch (JwtException e) {
+            throw new InvalidTokenException("无效的 Token", e);
+        } catch (Exception e) {
+            throw new InvalidTokenException("解析 Token 失败", e);
+        }
+    }
+
+    /**
+     * 判断 Token 是否过期
+     */
+    public boolean isTokenExpired(String token) {
+        Claims claims = getClaims(token);
+        return claims.getExpiration().before(new Date());
+    }
+
+    /**
+     * 获取账号
+     */
+    public String getUAccount(String token) {
+        Claims claims = getClaims(token);
+        return claims.getSubject();
+    }
+
+    /**
+     * 获取用户ID
+     */
+    public String getUId(String token) {
+        Claims claims = getClaims(token);
+        return claims.get("id", String.class);
+    }
+
+    // 自定义异常类
+    public static class TokenExpiredException extends RuntimeException {
+        public TokenExpiredException(String message, Throwable cause) {
+            super(message, cause);
+        }
+    }
+
+    public static class InvalidTokenException extends RuntimeException {
+        public InvalidTokenException(String message, Throwable cause) {
+            super(message, cause);
+        }
+    }
+}