Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package com.sra.biotech.submittool.persistence.client; /** * * @author Calvin */ import java.util.ArrayList; import java.util.List; import org.springframework.http.HttpHeaders; import org.springframework.http.HttpStatus; import org.springframework.http.MediaType; import org.springframework.http.ResponseEntity; import org.springframework.validation.FieldError; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.context.request.WebRequest; import org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler; public class SubmitExceptionHandler extends ResponseEntityExceptionHandler { @ExceptionHandler({ InvalidRequestException.class }) protected ResponseEntity<Object> handleInvalidRequest(RuntimeException e, WebRequest request) { InvalidRequestException ire = (InvalidRequestException) e; List<FieldErrorResource> fieldErrorResources = new ArrayList<>(); List<FieldError> fieldErrors = ire.getErrors().getFieldErrors(); for (FieldError fieldError : fieldErrors) { FieldErrorResource fieldErrorResource = new FieldErrorResource(); fieldErrorResource.setResource(fieldError.getObjectName()); fieldErrorResource.setField(fieldError.getField()); fieldErrorResource.setCode(fieldError.getCode()); fieldErrorResource.setMessage(fieldError.getDefaultMessage()); fieldErrorResources.add(fieldErrorResource); } ErrorResource error = new ErrorResource("InvalidRequest", ire.getMessage()); error.setFieldErrors(fieldErrorResources); HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.APPLICATION_JSON); return handleExceptionInternal(e, error, headers, HttpStatus.UNPROCESSABLE_ENTITY, request); } //... other handlers for other exceptions ... }