需求：
1.spring boot 項目restful 風格統一放回json
2.不在controller寫try catch代碼塊簡潔controller層
3.對異常做統一處理，同時處理@Validated 校驗器注解的異常
方法：
@ControllerAdvice 注解定義全局異常處理類
@ControllerAdvice
public class ControllerExceptionHandler {
}
@ExceptionHandler 注解聲明異常處理方法
@ExceptionHandler(Exception.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public ResponseResult handlerException(Exception e){
logger.error(e.getMessage(),e);
ResponseResult responseResult = new ResponseResult(ResponseCode.ERROR,e.getMessage());
return responseResult;
}
處理@Validated 校驗器注解的異常
@ExceptionHandler(MethodArgumentNotValidException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public ResponseResult handlerMethodArgumentException(MethodArgumentNotValidException e){
logger.error(e.getMessage(),e);
BindingResult bindingResult = e.getBindingResult();
String message = ValidMethodUtils.validMethod(bindingResult);
ResponseResult responseResult = new ResponseResult(ResponseCode.ERROR,message);
return responseResult;
}
完整代碼如下：
package com.travelsky.travelcloud.exception;
import com.travelsky.travelcloud.utils.ResponseCode;
import com.travelsky.travelcloud.utils.ResponseResult;
import com.travelsky.travelcloud.utils.bizutils.ValidMethodUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.http.HttpStatus;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.MethodArgumentNotValidException;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.bind.annotation.ResponseBody;
import org.springframework.web.bind.annotation.ResponseStatus;
/**異常統一處理的類
* Created by Liyan on 2018/3/22.
*/
@ControllerAdvice
public class ControllerExceptionHandler {
private static final Logger logger = LoggerFactory.getLogger(ControllerExceptionHandler.class);
/*create by LiYan on 2018.3.25.
* 處理不可預知的異常
* */
@ExceptionHandler(Exception.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public ResponseResult handlerException(Exception e){
logger.error(e.getMessage(),e);
ResponseResult responseResult = new ResponseResult(ResponseCode.ERROR,e.getMessage());
return responseResult;
}
/*create by LiYan on 2018.3.30.
* 處理接口數據校驗的異常
* */
@ExceptionHandler(MethodArgumentNotValidException.class)
@ResponseStatus(HttpStatus.BAD_REQUEST)
@ResponseBody
public ResponseResult handlerMethodArgumentException(MethodArgumentNotValidException e){
logger.error(e.getMessage(),e);
BindingResult bindingResult = e.getBindingResult();
String message = ValidMethodUtils.validMethod(bindingResult);
ResponseResult responseResult = new ResponseResult(ResponseCode.ERROR,message);
return responseResult;
}
}
如處理自定義異常可修改如下注解
@ExceptionHandler(自定義異常.class)