When the springboot / error page status is 999, 80% of the people will not

to configure
  port: 8000
    context-path: "/api"
    enabled: false

Just contacted with SpringBoot, HelloWolrd has been implemented. The normal 404 was also handled successfully. But has always been "Whitelabel Error Page". Tried a lot of methods, still can't solve.
I need to add status 999 to ErrorPageConifg, but I don't know how to add it. In theory, we can expand HttpStatus, but this is read-only.

This application has no explicit mapping for /error, so you are seeing this as a fallback.

Tue Jan 14 16:29:43 CST 2020
There was an unexpected error (type=None, status=999).
No message available


package cn.vlice.aox.AoxServer.config;

import org.springframework.boot.web.server.ConfigurableWebServerFactory;
import org.springframework.boot.web.server.ErrorPage;
import org.springframework.boot.web.server.WebServerFactoryCustomizer;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.http.HttpStatus;

public class ErrorPageConifg {
    public WebServerFactoryCustomizer<ConfigurableWebServerFactory> webServerFactoryCustomizer(){
        return new WebServerFactoryCustomizer<ConfigurableWebServerFactory>() {
            public void customize(ConfigurableWebServerFactory factory) {
                ErrorPage page404 = new ErrorPage(HttpStatus.NOT_FOUND, "/error/404");
                ErrorPage page500 = new ErrorPage(HttpStatus.INTERNAL_SERVER_ERROR, "/error/500");
                factory.addErrorPages(page404, page500);


package cn.vlice.aox.AoxServer.controller;

import cn.vlice.aox.AoxServer.data.Request;
import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

public class ErrorPageController {
    public Request toPage999() {
        HttpStatus status = HttpStatus.valueOf(404);
        return Request.error(status.getReasonPhrase(), status.value());

    public Request toPage404() {
        HttpStatus status = HttpStatus.valueOf(404);
        return Request.error(status.getReasonPhrase(), status.value());

    public Request toPage500() {
        HttpStatus status = HttpStatus.valueOf(500);
        return Request.error(status.getReasonPhrase(), status.value());

Violet ice, a UP who is busy with work and has no time to record video

Postscript 1.3 months ago

Problem solved

public class ErrorPageController implements ErrorController {

    public String getErrorPath() {
        return "/error/404";

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Tags: Java SpringBoot

Posted on Wed, 13 May 2020 10:17:57 -0400 by pneudralics