feat: (#97) GlobalExceptionHandler 로그 추가 (#98)

backend/src/main/java/com/votogether/exception/GlobalExceptionHandler.java

@@ -1,27 +1,32 @@
 package com.votogether.exception;
 
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.http.ResponseEntity;
 import org.springframework.web.bind.annotation.ExceptionHandler;
 import org.springframework.web.bind.annotation.RestControllerAdvice;
 
+@Slf4j
 @RestControllerAdvice
 public class GlobalExceptionHandler {
 
     @ExceptionHandler
     public ResponseEntity<ExceptionResponse> handleException(final Exception e) {
+        log.error("[" + e.getClass() + "] : " + e.getMessage());
         return ResponseEntity.internalServerError()
                 .body(new ExceptionResponse(-9999, "알 수 없는 서버 에러가 발생했습니다."));
     }
 
     @ExceptionHandler
     public ResponseEntity<ExceptionResponse> handleBadRequestException(final BadRequestException e) {
+        log.warn("[" + e.getClass() + "] : " + e.getMessage());
         return ResponseEntity.badRequest()
                 .body(ExceptionResponse.from(e));
     }
 
     @ExceptionHandler
     public ResponseEntity<ExceptionResponse> handleNotFoundException(final NotFoundException e) {
+        log.warn("[" + e.getClass() + "] : " + e.getMessage());
         return ResponseEntity.status(HttpStatus.NOT_FOUND)
                 .body(ExceptionResponse.from(e));
     }