[BACKEND] Exception 처리 및 도메인 추가 (#107)

Author: ddoed

backend/src/main/java/com/cmg/comtogether/common/config/CorsConfig.java

@@ -16,7 +16,8 @@ public CorsConfigurationSource corsConfigurationSource() {
         configuration.setAllowedOrigins(Arrays.asList(
                 "http://localhost:3000",
                 "https://com-together.vercel.app",
-                "https://com-together.org"
+                "https://com-together.org",
+                "https://comtogetherofficial.vercel.app"
         )); // 프론트 도메인
         configuration.addAllowedMethod("*"); // 모든 HTTP 메서드 허용
         configuration.addAllowedHeader("*"); // 모든 헤더 허용

backend/src/main/java/com/cmg/comtogether/common/exception/ErrorCode.java

@@ -10,6 +10,7 @@ public enum ErrorCode {
     // 공통
     INVALID_INPUT(400, "COMMON-001", "잘못된 입력 값입니다."),
     INVALID_FORMAT(400, "COMMON-002", "요청 본문의 형식이 올바르지 않습니다."),
+    METHOD_NOT_ALLOWED(405, "COMMON-003", "지원하지 않는 메서드입니다."),
     INTERNAL_SERVER_ERROR(500, "COMMON-999", "서버 에러가 발생했습니다."),
 
     // 유저

backend/src/main/java/com/cmg/comtogether/common/exception/GlobalExceptionHandler.java

@@ -5,6 +5,7 @@
 import org.springframework.http.ResponseEntity;
 import org.springframework.http.converter.HttpMessageNotReadableException;
 import org.springframework.validation.FieldError;
+import org.springframework.web.HttpRequestMethodNotSupportedException;
 import org.springframework.web.bind.MethodArgumentNotValidException;
 import org.springframework.web.bind.MissingServletRequestParameterException;
 import org.springframework.web.bind.annotation.ExceptionHandler;
@@ -54,6 +55,25 @@ public ResponseEntity<ErrorResponse> handleHttpMessageNotReadable(HttpMessageNot
                 .body(ErrorResponse.of(ErrorCode.INVALID_FORMAT, ErrorCode.INVALID_FORMAT.getMessage()));
     }
 
+    @ExceptionHandler(HttpRequestMethodNotSupportedException.class)
+    public ResponseEntity<ErrorResponse> handleMethodNotSupported(HttpRequestMethodNotSupportedException e) {
+
+        String method = e.getMethod();
+        String supported = (e.getSupportedMethods() != null)
+                ? String.join(", ", e.getSupportedMethods())
+                : "N/A";
+
+        String message = String.format(
+                "요청 메서드 '%s' 는 지원되지 않습니다. 가능한 메서드: [%s]",
+                method, supported
+        );
+
+        return ResponseEntity
+                .status(ErrorCode.METHOD_NOT_ALLOWED.getStatus())
+                .body(ErrorResponse.of(ErrorCode.METHOD_NOT_ALLOWED, message));
+    }
+
+
     @ExceptionHandler(BusinessException.class)
     public ResponseEntity<ErrorResponse> handleBusinessException(BusinessException e) {
         ErrorCode errorCode = e.getErrorCode();