springBoot全局异常

我不是女神ヾ 2023-06-17 15:58 22阅读 0赞

**现象：**  
监听全局异常，自定义异常抛出

**方法：**  
全局异常处理：@RestControllerAdvice 监听全局异常  
统一异常处理：@ExceptionHandler（Exception.class）:用在方法上面表示遇到这个异常就执行以下方法。

1:设置全局异常监听类、设置方法来设置监听异常类型  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70]  
2：监听全局异常 自定义提示语句返回、适合放到类最后处理！  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 1]

**自定义异常：**  
1：自定义异常类型类：  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 2]  
2：在程序中抛出自定义异常类  
![在这里插入图片描述][20191129171405980.jpg]  
3：全局监听自定义异常处理  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 3]  
代码：

1-自定义异常
    //package com.yh.common.exception;
    //
    ///**
    // * 版本号异常
    // */
    //public class VersionChangeException extends RuntimeException {
    //
    //    private Integer code;
    //
    //    public VersionChangeException(Integer code) {
    //        super("数据已被更改，请刷新页面！");
    //        this.code = code;
    //    }
    //
    //    public Integer getCode() {
    //        return code;
    //    }
    //}
    
    项目多种异常监听 记录下
    package com.yh.common.exception;
    
    import com.yh.common.util.JsonUtil;
    import feign.FeignException;
    import lombok.extern.slf4j.Slf4j;
    import org.hibernate.StaleObjectStateException;
    import org.springframework.http.HttpStatus;
    import org.springframework.validation.BindException;
    import org.springframework.validation.BindingResult;
    import org.springframework.validation.FieldError;
    import org.springframework.web.bind.MethodArgumentNotValidException;
    import org.springframework.web.bind.annotation.*;
    
    import java.util.List;
    
    
    @RestControllerAdvice
    @Slf4j
    public class RestExceptionHandler {
    
    	@ExceptionHandler(ServiceException.class)
    	@ResponseBody
    	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
        public ErrorResult serviceExceptionHandler(ServiceException e) {
    		log.error("controller advice rest exception:", e);
    		ErrorResult ertn = new ErrorResult(e.getCode(), e.getMessage()) ;
            return ertn;
        }  
    	 
    	
    	@ExceptionHandler({MethodArgumentNotValidException.class, BindException.class})
    	@ResponseBody
    	@ResponseStatus(HttpStatus.BAD_REQUEST)
    	public ErrorResult validatorExceptionHandler(Exception exception) {
    		log.error("controller advice rest exception:", exception);
    		BindingResult bindResult = null;
    		if (exception instanceof BindException) {
    			bindResult = ((BindException) exception).getBindingResult();
    		} else if (exception instanceof MethodArgumentNotValidException) {
    			bindResult = ((MethodArgumentNotValidException) exception).getBindingResult();
    		}
    		String msg = "";
    		List<FieldError> fieldErrors=bindResult.getFieldErrors();
            for (FieldError error:fieldErrors){
            	msg += error.getDefaultMessage()+";";
                log.error(error.getField()+":"+error.getDefaultMessage());
            }
            if(msg.length()>0){
            	msg= msg.substring(0,msg.length()-1);
    		}
    		ErrorResult ertn = new ErrorResult(ErrorCodeEnum.ERRPR_INPUT.getCode(), msg) ;
            return ertn;
        }
    
    	@ExceptionHandler({FeignException.class})
    	@ResponseBody
    	@ResponseStatus(HttpStatus.BAD_REQUEST)
        public ErrorResult feignExceptionHandler(FeignException e){
    		String msg = e.contentUTF8();
    		log.error(msg);
    		ErrorResult ertn = JsonUtil.toObject(msg, ErrorResult.class) ;
    		return ertn;
    	}
    
        @ExceptionHandler(value = HttpReqException.class)
    	@ResponseBody
    	@ResponseStatus(HttpStatus.BAD_REQUEST)
        public ErrorResult httpReqExceptionHandler(HttpReqException e){
    		log.error("controller advice rest exception:", e);
    		return new ErrorResult(e.getCode(), e.getMessage()) ;
    	}
    
    	@ExceptionHandler(value = StaleObjectStateException.class)
    	@ResponseBody
    	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    	public ErrorResult VersionChangeExceptionHandler(StaleObjectStateException e){
    		log.error("controller advice rest exception:", e);
    		return new ErrorResult(ErrorCodeEnum.VERSION_ERROR);
    	}
    
    	@ExceptionHandler(Exception.class)
    	@ResponseBody
    	@ResponseStatus(HttpStatus.INTERNAL_SERVER_ERROR)
    	public ErrorResult ExceptionHandler(Exception e) {
    		log.error("controller advice rest exception:", e);
    		ErrorResult ertn = new ErrorResult(ErrorCodeEnum.SYSTEM_ERROR) ;
    		return ertn;
    	}
    
    
    }

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20191129171241248.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20191129171346892.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz,size_16,color_FFFFFF,t_70
[20191129171405980.jpg]: https://img-blog.csdnimg.cn/20191129171405980.jpg
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20191129171420449.jpg?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2hjd2JyMTIz,size_16,color_FFFFFF,t_70