Spring Cloud zuul自定义统一异常处理实现方法

zuul.SendErrorFilter.post.disable=true

public class ErrorFilter extends ZuulFilter {  private static final String ERROR_STATUS_CODE_KEY = "error.status_code";  private Logger log = LoggerFactory.getLogger(ErrorFilter.class);  public static final String DEFAULT_ERR_MSG = "系统繁忙,请稍后再试";  @Override  public String filterType() {    return "post";  }  @Override  public int filterOrder() {    return 0;  }  @Override  public boolean shouldFilter() {    RequestContext ctx = RequestContext.getCurrentContext();    return ctx.containsKey(ERROR_STATUS_CODE_KEY);  }  @Override  public Object run() {        RequestContext ctx = RequestContext.getCurrentContext();    try {      HttpServletRequest request = ctx.getRequest();      int statusCode = (Integer) ctx.get(ERROR_STATUS_CODE_KEY);      String message = (String) ctx.get("error.message");      if (ctx.containsKey("error.exception")) {        Throwable e = (Exception) ctx.get("error.exception");        Throwable re = getOriginException(e);        if(re instanceof java.net.ConnectException){          message = "Real Service Connection refused";          log.warn("uri:{},error:{}" ,request.getRequestURI(),re.getMessage());        }else if(re instanceof java.net.SocketTimeoutException){          message = "Real Service Timeout";          log.warn("uri:{},error:{}" ,request.getRequestURI(),re.getMessage());        }else if(re instanceof com.netflix.client.ClientException){          message = re.getMessage();          log.warn("uri:{},error:{}" ,request.getRequestURI(),re.getMessage());        }else{          log.warn("Error during filtering",e);        }      }      if(StringUtils.isBlank(message))message = DEFAULT_ERR_MSG;      request.setAttribute("javax.servlet.error.status_code", statusCode);      request.setAttribute("javax.servlet.error.message", message);      WebUtils.responseOutJson(ctx.getResponse(), JsonUtils.toJson(new WrapperResponse<>(statusCode, message)));    } catch (Exception e) {      String error = "Error during filtering[ErrorFilter]";      log.error(error,e);      WebUtils.responseOutJson(ctx.getResponse(), JsonUtils.toJson(new WrapperResponse<>(500, error)));    }    return null;  }  private Throwable getOriginException(Throwable e){    e = e.getCause();    while(e.getCause() != null){      e = e.getCause();    }    return e;  }}

@Bean public ErrorFilter errorFilter(){  return new ErrorFilter();}