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예외 로깅 레벨 4xx/5xx 분리 #246

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예외 로깅 레벨 4xx/5xx 분리 #246

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34 changes: 21 additions & 13 deletions src/main/java/com/sofa/linkiving/global/error/handler/GlobalExceptionHandler.java
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Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,7 @@

import org.springframework.http.ResponseEntity;
import org.springframework.http.converter.HttpMessageNotReadableException;
import org.springframework.validation.FieldError;
import org.springframework.web.HttpMediaTypeNotSupportedException;
import org.springframework.web.HttpRequestMethodNotSupportedException;
import org.springframework.web.bind.MethodArgumentNotValidException;
Expand All @@ -25,7 +26,7 @@ public class GlobalExceptionHandler {

@ExceptionHandler(NoResourceFoundException.class)
public ResponseEntity<Void> handleNoResourceFound(NoResourceFoundException exception) {
log.debug("No static resource: {}", exception.getResourcePath());
log.warn("No static resource: {}", exception.getResourcePath());

@Goder-0 Goder-0 Jun 28, 2026

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PR 설명 수정이 필요해보입니다. 본문에는 “봇 스캔성 404 등 고빈도 노이즈는 DEBUG”라고 적혀 있는데, 현재 구현은 NoResourceFoundException을 WARN으로 남기고 있습니다.

@ckdals4600 ckdals4600 Jun 28, 2026 •
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확인 감사합니다. 본문 수정 완료하였습니다!

return ResponseEntity.notFound().build();
}

Expand All @@ -34,64 +35,71 @@ public ResponseEntity<Void> handleNoResourceFound(NoResourceFoundException excep
========================= */
@ExceptionHandler(BusinessException.class)
public ResponseEntity<BaseResponse<String>> handleBusinessException(BusinessException ex) {
log.error(ex.getMessage(), ex);
if (ex.getErrorCode().getStatus().is5xxServerError()) {
log.error("BusinessException [{}]", ex.getErrorCode().getCode(), ex);
} else {
log.warn("BusinessException [{}]: {}", ex.getErrorCode().getCode(), ex.getMessage());
}
return ErrorResponse.build(ex.getErrorCode());
}

/* =========================
검증/바인딩 예외
검증/바인딩 예외 (모두 4xx)
========================= */
@ExceptionHandler(MethodArgumentNotValidException.class)
public ResponseEntity<BaseResponse<String>> handleMethodArgumentNotValid(MethodArgumentNotValidException ex) {
log.error(ex.getMessage(), ex);
log.warn("Validation failed: {} field error(s) - fields={}",
ex.getBindingResult().getErrorCount(),
ex.getBindingResult().getFieldErrors().stream()
.map(FieldError::getField).distinct().toList());
return ErrorResponse.build(CommonErrorCode.INVALID_INPUT_VALUE);
}

@ExceptionHandler(ConstraintViolationException.class)
public ResponseEntity<BaseResponse<String>> handleConstraintViolation(ConstraintViolationException ex) {
log.error(ex.getMessage(), ex);
log.warn("Constraint violation: {}", ex.getMessage());
return ErrorResponse.build(CommonErrorCode.INVALID_INPUT_VALUE);
}

@ExceptionHandler(MethodArgumentTypeMismatchException.class)
public ResponseEntity<BaseResponse<String>> handleTypeMismatch(MethodArgumentTypeMismatchException ex) {
log.error(ex.getMessage(), ex);
log.warn("Type mismatch: parameter '{}'", ex.getName());
return ErrorResponse.build(CommonErrorCode.TYPE_MISMATCH);
}

@ExceptionHandler(MissingServletRequestParameterException.class)
public ResponseEntity<BaseResponse<String>> handleMissingParam(MissingServletRequestParameterException ex) {
log.error(ex.getMessage(), ex);
log.warn("Missing request parameter: {}", ex.getParameterName());
return ErrorResponse.build(CommonErrorCode.MISSING_REQUEST_PARAMS);
}

@ExceptionHandler(HttpMessageNotReadableException.class)
public ResponseEntity<BaseResponse<String>> handleNotReadable(HttpMessageNotReadableException ex) {
log.error(ex.getMessage(), ex);
log.warn("Malformed request body");
return ErrorResponse.build(CommonErrorCode.BAD_REQUEST);
}

/* =========================
HTTP 관련 예외
HTTP 관련 예외 (모두 4xx)
========================= */
@ExceptionHandler(HttpRequestMethodNotSupportedException.class)
public ResponseEntity<BaseResponse<String>> handleMethodNotSupported(HttpRequestMethodNotSupportedException ex) {
log.error(ex.getMessage(), ex);
log.warn("Method not supported: {}", ex.getMethod());
return ErrorResponse.build(CommonErrorCode.METHOD_NOT_ALLOWED);
}

@ExceptionHandler(HttpMediaTypeNotSupportedException.class)
public ResponseEntity<BaseResponse<String>> handleMediaTypeNotSupported(HttpMediaTypeNotSupportedException ex) {
log.error(ex.getMessage(), ex);
log.warn("Media type not supported: {}", ex.getContentType());
return ErrorResponse.build(CommonErrorCode.HTTP_MEDIA_NOT_SUPPORT);
}

/* =========================
그 외 모든 예외
그 외 모든 예외 (예상 못 한 5xx)
========================= */
@ExceptionHandler(Exception.class)
public ResponseEntity<BaseResponse<String>> handleException(Exception ex) {
log.error(ex.getMessage(), ex);
log.error("Unhandled exception", ex);
return ErrorResponse.build(CommonErrorCode.INTERNAL_SERVER_ERROR);
}

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