feat: Add exception handling (#19)

Co-authored-by: chaeeun-Han <[email protected]>

src/main/java/com/beotkkot/qtudy/common/ResponseCode.java

@@ -8,6 +8,7 @@ public interface ResponseCode {
  String VALIDATION_FAILED = "VF";
  String NOT_EXISTED_USER = "NEU";
  String NOT_EXISTED_POST = "NEP";
+ String NOT_EXISTED_COMMENT = "NEC";
 
  // HTTP Status 401
  String SIGN_IN_FAIL = "SF";

src/main/java/com/beotkkot/qtudy/common/ResponseMessage.java

@@ -8,6 +8,7 @@ public interface ResponseMessage {
  String VALIDATION_FAILED = "Validation Failed.";
  String NOT_EXISTED_USER = "This user does not exist.";
  String NOT_EXISTED_POST = "This post does not exist.";
+ String NOT_EXISTED_COMMENT = "This comment does not exist.";
 
  // HTTP Status 401
  String SIGN_IN_FAIL = "Login information mismatch.";

src/main/java/com/beotkkot/qtudy/dto/response/posts/PostsResponseDto.java

@@ -34,4 +34,9 @@ public static ResponseEntity<ResponseDto> noPermission() {
  return ResponseEntity.status(HttpStatus.FORBIDDEN).body(result);
  }
 
+ public static ResponseEntity<ResponseDto> noAuthentication() {
+ ResponseDto result = new ResponseDto(ResponseCode.AUTHORIZATION_FAIL, ResponseMessage.AUTHORIZATION_FAIL);
+ return ResponseEntity.status(HttpStatus.UNAUTHORIZED).body(result);
+ }
+
 }