package com.ketayao.ketacustom.spring;
import java.util.List;
import javax.validation.ConstraintViolationException;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpHeaders;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.validation.BindException;
import org.springframework.validation.FieldError;
import org.springframework.validation.ObjectError;
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 com.ketayao.ketacustom.util.dwz.AjaxObject;
import com.ketayao.utils.BeanValidators;
import com.ketayao.utils.Exceptions;
/**
* 返回带错误信息和状态码的ajaxobject字符串。
*
* @author <a href="mailto:ketayao@gmail.com">ketayao</a>
* Version 2.0.0
* @since 2013-4-23 下午3:06:34
*/
@ControllerAdvice
public class RestExceptionHandler extends ResponseEntityExceptionHandler {
private static final Logger LOGGER = LoggerFactory.getLogger(RestExceptionHandler.class);
/**
* 处理Hibernate Validator验证出错的类。
* @param ex
* @param request
* @return
*/
@ExceptionHandler(value = {ConstraintViolationException.class })
public final ResponseEntity<String> handleException(ConstraintViolationException ex, WebRequest request) {
List<String> errorList = BeanValidators.extractPropertyAndMessageAsList(ex.getConstraintViolations());
StringBuilder msg = new StringBuilder();
for (String error : errorList) {
msg.append(error + "，");
}
msg.setCharAt(msg.length() - 1, '。');
AjaxObject ajaxObject = AjaxObject.newError(msg.toString());
return new ResponseEntity<String>(ajaxObject.toString(), HttpStatus.OK);
}
/*
* 处理springmvc form bean绑定错误。
* (non-Javadoc)
* @see org.springframework.web.servlet.mvc.method.annotation.ResponseEntityExceptionHandler#handleBindException(org.springframework.validation.BindException, org.springframework.http.HttpHeaders, org.springframework.http.HttpStatus, org.springframework.web.context.request.WebRequest)
*/
@Override
protected ResponseEntity<Object> handleBindException(BindException ex,
HttpHeaders headers, HttpStatus status, WebRequest request) {
List<ObjectError> errorList = ex.getAllErrors();
StringBuilder msg = new StringBuilder();
for (ObjectError error : errorList) {
if (error instanceof FieldError) {
FieldError fieldError = (FieldError)error;
msg.append(fieldError.getField() + "字段、");
} else {
msg.append(error.getObjectName() + "对象、");
}
LOGGER.error(error + Exceptions.getStackTraceAsString(ex));
}
msg.setCharAt(msg.length() - 1, '，');
msg.append("绑定错误。");
AjaxObject ajaxObject = AjaxObject.newError(msg.toString());
return new ResponseEntity<Object>(ajaxObject.toString(), HttpStatus.OK);
}
}