chore: Java 스타일 수정

Author: github-actions

backend/src/main/java/io/f1/backend/global/config/CustomHandshakeInterceptor.java

@@ -1,7 +1,7 @@
 package io.f1.backend.global.config;
 
-import java.util.Map;
 import lombok.extern.slf4j.Slf4j;
+
 import org.springframework.http.HttpStatus;
 import org.springframework.http.server.ServerHttpRequest;
 import org.springframework.http.server.ServerHttpResponse;
@@ -11,13 +11,19 @@
 import org.springframework.web.socket.WebSocketHandler;
 import org.springframework.web.socket.server.HandshakeInterceptor;
 
+import java.util.Map;
+
 @Slf4j
 @Component
 public class CustomHandshakeInterceptor implements HandshakeInterceptor {
 
     @Override
-    public boolean beforeHandshake(ServerHttpRequest request,
-        ServerHttpResponse response, WebSocketHandler wsHandler, Map<String, Object> attributes) throws Exception {
+    public boolean beforeHandshake(
+            ServerHttpRequest request,
+            ServerHttpResponse response,
+            WebSocketHandler wsHandler,
+            Map<String, Object> attributes)
+            throws Exception {
         Authentication authentication = SecurityContextHolder.getContext().getAuthentication();
         if (authentication == null || !authentication.isAuthenticated()) {
             response.setStatusCode(HttpStatus.UNAUTHORIZED); // 서버 로그에만 적용되는 StatusCode
@@ -29,10 +35,12 @@ public boolean beforeHandshake(ServerHttpRequest request,
     }
 
     @Override
-    public void afterHandshake(ServerHttpRequest request, ServerHttpResponse response,
-        WebSocketHandler wsHandler, Exception exception) {
+    public void afterHandshake(
+            ServerHttpRequest request,
+            ServerHttpResponse response,
+            WebSocketHandler wsHandler,
+            Exception exception) {
         // TODO : 연결 이후, 사용자 웹소켓 세션 로그 및 IP 등 추적 및 메트릭 수집 로직 추가
 
     }
-
 }

backend/src/main/java/io/f1/backend/global/config/WebSocketConfig.java

@@ -8,7 +8,6 @@
 import org.springframework.web.socket.config.annotation.EnableWebSocketMessageBroker;
 import org.springframework.web.socket.config.annotation.StompEndpointRegistry;
 import org.springframework.web.socket.config.annotation.WebSocketMessageBrokerConfigurer;
-import org.springframework.web.socket.server.support.HttpSessionHandshakeInterceptor;
 
 @Configuration
 @RequiredArgsConstructor