Spring Boot 全局异常处理

ControllerAdvice + ExceptionHandler

BaseExceptionHandler.java

@RestControllerAdvice
@Order(value = Ordered.HIGHEST_PRECEDENCE)
@Slf4j
public class BaseExceptionHandler {

    /**
     * 使用 @RequestParam 注解时，如果注解的参数缺失，则会抛出此异常
     */
    @ExceptionHandler(value = MissingServletRequestParameterException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> missingServletRequestParameterException(MissingServletRequestParameterException e) {
        log.error("缺少请求参数: {}", e.getMessage());
        return Rs.error("缺少请求参数");
    }

    /**
     * 使用 @RequestBody 注解时，如果注解的参数为空，则会抛出此异常
     */
    @ExceptionHandler(HttpMessageNotReadableException.class)
    @ResponseStatus(HttpStatus.OK)
    Rs<String> httpMessageNotReadableException() {
        // Required request body is missing
        return Rs.error("缺少 request body 参数");
    }

    /**
     * 统一处理请求参数校验(实体对象传参)
     *
     * @param e BindException
     * @return FebsResponse
     */
    @ExceptionHandler(BindException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> bindException(BindException e) {
        StringBuilder message = new StringBuilder();
        List<FieldError> fieldErrors = e.getBindingResult().getFieldErrors();
        for (FieldError error : fieldErrors) {
            message.append(error.getField()).append(error.getDefaultMessage()).append(",");
        }
        message = new StringBuilder(message.substring(0, message.length() - 1));
        log.error(message.toString());
        return Rs.error(message.toString());
    }

    /**
     * spring + hibernate-validator 验证异常
     */
    @ExceptionHandler(MethodArgumentNotValidException.class)
    @ResponseStatus(HttpStatus.OK)
    Rs<String> methodArgumentNotValidException(MethodArgumentNotValidException ex) {
        BindingResult result = ex.getBindingResult();
        ObjectError error = result.getAllErrors().get(0);
        String msg = error.getDefaultMessage();
        return Rs.error(msg);
    }

    /**
     * spring + hibernate-validator 验证异常
     */
    @ExceptionHandler(value = ConstraintViolationException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> constraintViolationException(ConstraintViolationException e) {
        StringBuilder message = new StringBuilder();
        Set<ConstraintViolation<?>> violations = e.getConstraintViolations();
        for (ConstraintViolation<?> violation : violations) {
            Path path = violation.getPropertyPath();
            String[] pathArr = StringUtils.splitByWholeSeparatorPreserveAllTokens(path.toString(), ".");
            message.append(pathArr[1]).append(violation.getMessage()).append(",");
        }
        message = new StringBuilder(message.substring(0, message.length() - 1));
        log.error(message.toString());
        return Rs.error(message.toString());
    }

    @ExceptionHandler(value = AccessDeniedException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> accessDeniedException() {
        return Rs.error("没有权限访问该资源");
    }

    @ExceptionHandler(value = HttpMediaTypeNotSupportedException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> httpMediaTypeNotSupportedException(HttpMediaTypeNotSupportedException e) {
        String message = "该方法不支持" + StringUtils.substringBetween(e.getMessage(), "'", "'") + "媒体类型";
        log.error(message);
        return Rs.error(message);
    }

    @ExceptionHandler(value = HttpRequestMethodNotSupportedException.class)
    @ResponseStatus(HttpStatus.OK)
    public Rs<String> httpRequestMethodNotSupportedException(HttpRequestMethodNotSupportedException e) {
        String message = "该方法不支持" + StringUtils.substringBetween(e.getMessage(), "'", "'") + "请求方法";
        log.error("msg: {}", message);
        return Rs.error(message);
    }


    // 这里不能最好不要处理 Exception 异常，否则可能会导致页面请求返回错误页面不正确问题
    // @ExceptionHandler(value = Exception.class)
    // @ResponseStatus(HttpStatus.OK)
    // public Rs<String> exception(Exception e) {
    //     String message = e.getMessage();
    //     log.error("msg: {}", message, e);
    //     return Rs.error(message);
    // }
}

继承 BasicErrorController

GlobalErrorController.java

@Controller
@ApiIgnore
@Slf4j
public class GlobalErrorController extends BasicErrorController {

    public GlobalErrorController(ErrorAttributes errorAttributes,
                                 ServerProperties serverProperties,
                                 List<ErrorViewResolver> errorViewResolvers) {
        super(errorAttributes, serverProperties.getError(), errorViewResolvers);
    }

    /**
     * 全局异常处理
     * <pre>
     *     原始异常信息格式
     *     {
     *         "timestamp": 1507803567698,
     *         "status": 404,
     *         "error": "Not Found",
     *         "message": "No message available",
     *         "path": "/esb/crms"
     *     }
     * </pre>
     *
     * @param request 请求对象
     * @return 返回数据
     */
    @Override
    @RequestMapping
    @ResponseBody
    public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
        // {timestamp=2021-07-20T08:49:22.134+0800, status=404, error=Not Found, path=/app/listxx}
        // {timestamp=2021-07-20T08:49:44.259+0800, status=500, error=Internal Server Error, path=/app/list}
        Map<String, Object> body = this.getErrorAttributes(request, this.getErrorAttributeOptions(request, MediaType.ALL));
        log.error("body: {}", body);
        // HttpStatus status = this.getStatus(request);
        Object status = body.get("status") != null ? body.get("status") : -99;
        String error = (String) body.get("error");
        String path = (String) body.get("path");

        // 获取真实的异常信息
        Object attribute = request.getAttribute("javax.servlet.error.exception");
        if (attribute instanceof Exception) {
            Exception e = (Exception) attribute;
            String message = e.getCause().getMessage();
            if (StringUtils.isNotBlank(message)) {
                error = message;
            }
        }

        Map<String, Object> map = new HashMap<>(4);
        map.put("code", status);
        map.put("msg", "error: " + error + ", path: " + path);
        map.put("success", "0".equals(status));
        return new ResponseEntity<>(map, HttpStatus.OK);
    }

    @Override
    @RequestMapping(produces = MediaType.TEXT_HTML_VALUE)
    public ModelAndView errorHtml(HttpServletRequest request, HttpServletResponse response) {
        HttpStatus status = getStatus(request);
        Map<String, Object> model = Collections
                .unmodifiableMap(getErrorAttributes(request, getErrorAttributeOptions(request, MediaType.TEXT_HTML)));
        response.setStatus(status.value());
        ModelAndView modelAndView = resolveErrorView(request, response, status, model);
        modelAndView = (modelAndView != null) ? modelAndView : new ModelAndView("error", model);

        // 构建一个请求Id
        String reqId = String.valueOf(System.currentTimeMillis());

        // 获取真实的异常信息
        Object attribute = request.getAttribute("javax.servlet.error.exception");
        if (attribute instanceof Exception) {
            Exception e = (Exception) attribute;
            String message = e.getCause().getMessage();
            String reason = e.getMessage();
            log.error("reqId: {}, reason: {}", reqId, reason, e);
            if (StringUtils.isNotBlank(message)) {
                modelAndView.addObject("msg", message);
            }
        }
        return modelAndView.addObject("reqId", reqId);
    }
}

错误页面

<div class="card-body">
  <h5 class="card-title">出错啦</h5>
  <#if msg??>
      <p class="card-text" style="color: #9c9c9c">${msg}</p>
  <#else>
      <p class="card-text" style="color: #9c9c9c">出错了，请联系管理员或者重试......</p>
  </#if>
  <#if reqId??>
      <p class="card-text" style="color: #9c9c9c">请求 Id：${reqId}</p>
  </#if>
</div>