如何使用SpringBoot处理全局异常

如何使用SpringBoot处理全局异常

使用@ControllerAdvice 和 @ExceptionHandler处理全局异常

参考：

@ControllerAdvice@ResponseBody@Slf4jpublic class ExceptionHandler {    @ResponseStatus(httpstatus.OK)    @org.springframework.WEB.bind.annotation.ExceptionHandler(value = {MissingServletRequestParameterException.class})    public ViewResult<Object> missingServletRequestParameterException(MissingServletRequestParameterException e) {        return ViewResult.state(rpcCode.OPERATION_NOT_PERMITTED_CODE, e.getMessage(), null);    }    @ResponseStatus(HttpStatus.OK)    @org.springframework.web.bind.annotation.ExceptionHandler(value = {Exception.class})    public ViewResult<Object> allException(Exception e) {        ViewResult<Object> result = buildCustomException(e);        if (result == null && e.getCause() != null) {            result = buildCustomException(e.getCause() );        }        if (result != null) {            return result;        }        // 请求传参等spring抛出的异常消息显示出来用于调试        if (e instanceof ServletException || e instanceof NestedRuntimeException) {            log.warn("", e);            return ViewResult.state(RpcCode.SYSTEM_DEFAULT_ERROR_CODE, "请求错误:" + e.getMessage(), null);        }        log.error("system error:", e);        return ViewResult.state(RpcCode.SYSTEM_DEFAULT_ERROR, null);    }        private ViewResult<Object> buildCustomException(Throwable e) {        int code = RpcCode.SYSTEM_DEFAULT_ERROR_CODE;        if (e instanceof NoAuthException) {            code = RpcCode.OPERATION_NOT_PERMITTED_CODE;        } else if (e instanceof com.chj.thor.auth.v2.exception.NoAuthException) {            code = RpcCode.OPERATION_NOT_PERMITTED_CODE;        } else if (e instanceof DuplicatedException) {            code = RpcCode.RESOURCE_DUPLICATED_CODE;        } else if (e instanceof NotFoundException) {            code = RpcCode.RESOURCE_NOTFOUND_CODE;        } else if (e instanceof OperationNotPermittedException) {            code = RpcCode.OPERATION_NOT_PERMITTED_CODE;        } else if (e instanceof ParamInvalidException) {            code = apiRpcCode.PARAM_INVALIDATED_CODE;        } else if (e instanceof UrlUnreachableException) {            code = ApiRpcCode.URL_UNREACHABLE_CODE;        } else if (e instanceof ThirdServiceException) {            code = ApiRpcCode.THIRD_SERVICE_CODE;        } else if (e instanceof ThorException) {            code = 500001;        }        if (code != RpcCode.SYSTEM_DEFAULT_ERROR_CODE) {            return ViewResult.state(code, e.getMessage(), null);        }        return null;    }    @ResponseStatus(HttpStatus.BAD_REQUEST)    @org.springframework.web.bind.annotation.ExceptionHandler({            MethodArgumentNotValidException.class,//requestBody校验    })    public ViewResult<Object> methodArgumentNotValidException(MethodArgumentNotValidException e) throws MethodArgumentNotValidException {        log.info("[前置条件校验失败]", e);        Class<?> clazz = e.getParameter().getExecutable().getDeclarinGClass();        //只有Controller层的参数出现问题才进行封装处理，否则直接上抛        if (clazz.getSimpleName().endsWith("Controller")) {            FieldError fieldError = e.getBindingResult().getFieldError();            String message = "INVALID PARAMS";            if (null != fieldError) {                message += ":" + fieldError.getField();                message += ":" + fieldError.getDefaultMessage();            }            return ViewResult.state(IRpcCode.ILLEGAL_ARGUMENT_CODE, message, null);        } else {            throw e;        }    }    @ResponseStatus(HttpStatus.BAD_REQUEST)    @org.springframework.web.bind.annotation.ExceptionHandler({            ConstraintViolationException.class //requestParam校验    })    public ViewResult<Object> constraintViolationException(ConstraintViolationException e) {        log.info("[前置条件校验失败]", e);        Set<ConstraintViolation<?>> validations = e.getConstraintViolations();        StringBuilder message = new StringBuilder("INVALID PARAMS");        //当配置的是failFast模式时，循环只会执行一遍        for (ConstraintViolation<?> v : validations) {            //只有Controller service层的参数出现问题才进行封装处理，否则直接上抛            if (v.getRootBeanClass().getSimpleName().endsWith("Controller") ||                    v.getRootBeanClass().getSimpleName().endsWith("ServiceImpl")) {                message.append(":");                message.append(v.getPropertyPath());                message.append(":");                message.append(v.getMessage());            } else {                throw e;            }        }        return ViewResult.state(IRpcCode.ILLEGAL_ARGUMENT_CODE, message.toString(), null);    }    @ResponseStatus(HttpStatus.BAD_REQUEST)    @org.springframework.web.bind.annotation.ExceptionHandler({            HttpMessageNotReadableException.class, //requestParam校验            HttpRequestMethodNotSupportedException.class,//method不支持            HttpMediaTypeException.class,//ContentType问题            ServletRequestBindingException.class//数据绑定问题    })    public ViewResult<Object> constraintViolationException(Exception e) {        log.info("[客户端数据格式错误]", e);        return ViewResult.state(IRpcCode.ILLEGAL_ARGUMENT_CODE, e.getMessage(), null);    }}

来源地址：https://blog.csdn.net/Kingsea442/article/details/134076763