Required parameters exception doesn't work in spring boot 2.x - spring

Question

In my spring boot application, I tried to handled the Required parameter exception. This question may be duplicated. But the answers posted don't help me.
My controller
#GetMapping("/test")
public ObjectId test(#RequestBody OIdLGroupIds OIdLGroupIds,#RequestParam ObjectId _id){
return videoService.test();
}
My global exception handler is like following.
#RestControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
#ExceptionHandler(Exception.class)
public final ResponseEntity<Object> handleAllExceptions(Exception ex, WebRequest request) {
List<String> details = new ArrayList<>();
details.add(ex.getLocalizedMessage());
ErrorResponse error = new ErrorResponse("Server Error", details);
return new ResponseEntity(error, HttpStatus.INTERNAL_SERVER_ERROR);
}
#ExceptionHandler(NotFoundHandler.class)
public final ResponseEntity<Object> handleRecordNotFoundException(NotFoundHandler ex, WebRequest request) {
Map<String, Object> body = new LinkedHashMap<>();
body.put("timestamp", LocalDateTime.now());
body.put("message", "Record not found");
List<String> details = new ArrayList<>();
details.add(ex.getLocalizedMessage());
ErrorResponse error = new ErrorResponse("Record Not Found", details);
return new ResponseEntity(error, HttpStatus.NOT_FOUND);
}
#Override
protected ResponseEntity<Object> handleMethodArgumentNotValid(
MethodArgumentNotValidException ex, HttpHeaders headers,
HttpStatus status, WebRequest request) {
Map<String, Object> body = new LinkedHashMap<>();
body.put("timestamp", LocalDate.now());
body.put("status", status.value());
Set<String> errors = ex.getBindingResult()
.getFieldErrors()
.stream()
.map(x -> x.getDefaultMessage())
.collect(Collectors.toSet());
body.put("details", errors);
return new ResponseEntity<>(body, HttpStatus.BAD_REQUEST);
}
}
It doesn't throw any details (Body is blank). But the response status is 400 Bad Request. But when I comment all above codes, it throws default exceptions with body.
I tried this also
#Override
protected ResponseEntity<Object> handleMissingServletRequestParameter(MissingServletRequestParameterException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
String name = ex.getParameterName();
System.out.println(name);
logger.error(name + " parameter is missing");
return super.handleMissingServletRequestParameter(ex, headers, status, request);
}
I have tried in many ways, But no luck. Did I miss anything? Please help me. Thanks in advance.

Answer 1

Empty request body raises HttpMessageNotReadableException.
#RestControllerAdvice
public class GlobalExceptionHandler extends ResponseEntityExceptionHandler {
#Override
protected ResponseEntity<Object> handleMissingServletRequestParameter(MissingServletRequestParameterException ex,
HttpHeaders headers, HttpStatus status, WebRequest request) {
String name = ex.getParameterName();
System.out.println(name);
logger.error(name + " parameter is missing");
return super.handleMissingServletRequestParameter(ex, headers, status, request);
}
#Override
protected ResponseEntity<Object> handleHttpMessageNotReadable(
HttpMessageNotReadableException ex, HttpHeaders headers, HttpStatus status, WebRequest request) {
System.out.println(ex.getMessage());
logger.error("Request body is missing");
return super.handleHttpMessageNotReadable(ex, headers, status, request);
}
}
If you allow empty body, use #RequestBody(required = false).