Springboot统一异常返回

1、返回异常接收页面

一、引入依赖

        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
            org.springframework.boot
            spring-boot-starter-web
        

二、添加配置

spring:
  thymeleaf:
    cache: false
    suffix: .html
    encoding: UTF-8
    servlet:
      content-type: text/html

 三、templates下新建error.html

四、 定义统一异常接收

@Slf4j
@ControllerAdvice
public class GlobalExceptionHandler {


    @ExceptionHandler(value=Exception.class)//处理哪一类异常
    public ModelAndView handlerException(Exception e,  HttpServletRequest request){
        ModelAndView modelAndView = new ModelAndView();
        //跳转异常页面路径
        modelAndView.setViewName("error");
        //页面显示错误信息  页面只需要使用对应的取值方式取值就可以取到msg了
        modelAndView.addObject("msg",e.getMessage());
        modelAndView.addObject("url", request.getRequestURL());
        return modelAndView;
    }

}

 2、返回json数据格式

一、统一异常处理

@Slf4j
@ControllerAdvice
public class GlobalExceptionHandler {

    
    @ExceptionHandler(value = BizException.class)
    @ResponseBody
    public Result bizExceptionHandler(BizException ex){
        if(log.isErrorEnabled()){
            log.error("发生业务异常！原因是：{}",ex.getErrorMsg());
        }
        return Result.error(ex.getErrorCode(),ex.getErrorMsg());
    }

    
    @ExceptionHandler(value =NullPointerException.class)
    @ResponseBody
    public Result exceptionHandler(NullPointerException ex){
        if(log.isErrorEnabled()){
            log.error("发生空指针异常！原因是:",ex);
        }
        return Result.error(ResultCodeEnum.BODY_NOT_MATCH);
    }


    
    @ExceptionHandler(value =Exception.class)
    @ResponseBody
    public Result exceptionHandler(Exception ex){
        if(log.isErrorEnabled()){
            log.error("未知异常！原因是:",ex);
        }
        return Result.error(ResultCodeEnum.INTERNAL_SERVER_ERROR);
    }

    
    
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseBody
    public Result methodArgumentNotValidExceptionHandler(MethodArgumentNotValidException ex) {
        String message = ex.getBindingResult()
                .getAllErrors()
                .stream()
                .map(DefaultMessageSourceResolvable::getDefaultMessage)
                .collect(Collectors.joining());
        return Result.fail(message);
    }

    
    @ExceptionHandler({ConstraintViolationException.class})
    public Result handleConstraintViolationException(ConstraintViolationException ex) {
        String message = ex.getConstraintViolations()
                .stream()
                .map(ConstraintViolation::getMessage)
                .collect(Collectors.joining());
        return Result.fail(message);
    }

    
    @ExceptionHandler(BindException.class)
    @ResponseBody
    public Result bindExceptionHandler(BindException ex) {
        String message = ex.getBindingResult()
                .getAllErrors()
                .stream()
                .map(DefaultMessageSourceResolvable::getDefaultMessage)
                .collect(Collectors.joining());
        return Result.fail(message);
    }
}