diff --git a/src/main/java/com/light/delivery/config/RequestLogInterceptor.java b/src/main/java/com/light/delivery/config/RequestLogInterceptor.java
index 158e095..0253610 100644
--- a/src/main/java/com/light/delivery/config/RequestLogInterceptor.java
+++ b/src/main/java/com/light/delivery/config/RequestLogInterceptor.java
@@ -14,15 +14,19 @@ public class RequestLogInterceptor implements HandlerInterceptor {
 
     @Override
     public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
-        // 关键：将请求转换为 ContentCachingRequestWrapper 类型
-        ContentCachingRequestWrapper wrappedRequest = (ContentCachingRequestWrapper) request;
+        // 安全地处理请求包装器
+        String body = "[无法读取请求体]";
+        if (request instanceof ContentCachingRequestWrapper) {
+            ContentCachingRequestWrapper wrappedRequest = (ContentCachingRequestWrapper) request;
+            body = getRequestBody(wrappedRequest);
+        }
 
         logger.debug("\n=== 收到请求 ===\nMethod: {}\nURI: {}\nParams: {}\nHeaders: {}\nBody: {}",
                 request.getMethod(),
                 request.getRequestURI(),
                 request.getQueryString(),
                 getHeadersAsString(request),
-                getRequestBody(wrappedRequest)); // 传入包装后的请求
+                body);
         return true;
     }
 
diff --git a/src/main/java/com/light/delivery/util/JwtUtil.java b/src/main/java/com/light/delivery/util/JwtUtil.java
index aed5308..57cf582 100644
--- a/src/main/java/com/light/delivery/util/JwtUtil.java
+++ b/src/main/java/com/light/delivery/util/JwtUtil.java
@@ -34,6 +34,23 @@ public class JwtUtil {
     @Value("${jwt.expiration}")
     private Long expiration;
 
+    /**
+     * 用于签名JWT的安全密钥
+     */
+    private SecretKey secretKey;
+
+    /**
+     * 在初始化时根据配置的密钥创建安全的SecretKey
+     */
+    public void init() {
+        if (secret != null && !secret.isEmpty()) {
+            // 如果配置了密钥，则使用它创建SecretKey
+            secretKey = Keys.hmacShaKeyFor(secret.getBytes());
+        } else {
+            // 否则生成一个随机的安全密钥
+            secretKey = Keys.secretKeyFor(SignatureAlgorithm.HS512);
+        }
+    }
 
     /**
      * 生成一个安全的随机密钥，并打印其Base64编码字符串（用于配置到配置文件中）
@@ -69,12 +86,17 @@ public class JwtUtil {
      * @return Token 字符串
      */
     private String createToken(Map<String, Object> claims, String subject) {
+        // 确保secretKey已初始化
+        if (secretKey == null) {
+            init();
+        }
+        
         return Jwts.builder()
                 .setClaims(claims)
                 .setSubject(subject)
                 .setIssuedAt(new Date(System.currentTimeMillis()))
                 .setExpiration(new Date(System.currentTimeMillis() + expiration * 1000))
-                .signWith(SignatureAlgorithm.HS512, secret)
+                .signWith(secretKey)
                 .compact();
     }
 
@@ -89,8 +111,14 @@ public class JwtUtil {
             throw new IllegalArgumentException("Token cannot be null");
         }
         
-        Claims claims = Jwts.parser()
-                .setSigningKey(secret) // secret 为你的 JWT 密钥
+        // 确保secretKey已初始化
+        if (secretKey == null) {
+            init();
+        }
+        
+        Claims claims = Jwts.parserBuilder()
+                .setSigningKey(secretKey)
+                .build()
                 .parseClaimsJws(token.replace("Bearer ", ""))
                 .getBody();
         return claims.getSubject(); // subject 通常存储用户名
@@ -157,7 +185,16 @@ public class JwtUtil {
      * @return 声明信息
      */
     private Claims extractAllClaims(String token) {
-        return Jwts.parser().setSigningKey(secret).parseClaimsJws(token).getBody();
+        // 确保secretKey已初始化
+        if (secretKey == null) {
+            init();
+        }
+        
+        return Jwts.parserBuilder()
+                .setSigningKey(secretKey)
+                .build()
+                .parseClaimsJws(token)
+                .getBody();
     }
 
     /**