Java tutorial
/******************************************************************************* * Copyright (c) 2005, 2014 springside.github.io * * Licensed under the Apache License, Version 2.0 (the "License"); *******************************************************************************/ package com.profiles.rest; import java.util.Map; import javax.validation.ConstraintViolationException; import org.springframework.http.HttpHeaders; import org.springframework.http.HttpStatus; import org.springframework.http.MediaType; import org.springframework.http.ResponseEntity; 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; import org.springside.modules.beanvalidator.BeanValidators; import org.springside.modules.mapper.JsonMapper; /** * ExceptionHandler?Restful. * * @author calvin */ // Spring-MVC????Controllerannotation @ControllerAdvice public class RestExceptionHandler extends ResponseEntityExceptionHandler { private JsonMapper jsonMapper = new JsonMapper(); @ExceptionHandler(value = { ConstraintViolationException.class }) public final ResponseEntity<?> handleException(ConstraintViolationException ex, WebRequest request) { Map<String, String> errors = BeanValidators.extractPropertyAndMessage(ex.getConstraintViolations()); String body = jsonMapper.toJson(errors); HttpHeaders headers = new HttpHeaders(); headers.setContentType(MediaType.TEXT_PLAIN); return handleExceptionInternal(ex, body, null, HttpStatus.BAD_REQUEST, request); } }