Bad Request error handling issue

If there's no required parameter from rest call, the GlobalControllerExceptionhandler will never capture it since BadQuestException is never instantiated and thrown. To capture 400 error, you have to do this (using MissingRequestValueException):

@ResponseStatus(BAD_REQUEST)
@ExceptionHandler(MissingRequestValueException.class)
public @ResponseBody HttpErrorInfo handleBadRequestExceptions(
ServerHttpRequest request, MissingRequestValueException ex) {
return createHttpErrorInfo(BAD_REQUEST, request, ex);
}

Start by locating GlobalControllerExceptionhandler and review how missing required REST parameters are currently handled. Check the existing BadRequestException handling and add coverage for MissingRequestValueException as described in the issue. Done means a request missing a required parameter is captured and returns a 400 response with HttpErrorInfo.