SpringBoot page load error

 

@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, isIncludeStackTrace(request, MediaType.TEXT_HTML)));
   response.setStatus(status.value());
   ModelAndView modelAndView = resolveErrorView(request, response, status, model);
   return (modelAndView != null) ? modelAndView : new ModelAndView("error", model);
}

AbstractErrorController

/**
	 * Resolve any specific error views. By default this method delegates to
	 * {@link ErrorViewResolver ErrorViewResolvers}.
	 * @param request the request
	 * @param response the response
	 * @param status the HTTP status
	 * @param model the suggested model
	 * @return a specific {@link ModelAndView} or {@code null} if the default should be
	 * used
	 * @since 1.4.0
	 */
	protected ModelAndView resolveErrorView(HttpServletRequest request,
			HttpServletResponse response, HttpStatus status, Map<String, Object> model) {
		for (ErrorViewResolver resolver : this.errorViewResolvers) {
			ModelAndView modelAndView = resolver.resolveErrorView(request, status, model);
			if (modelAndView != null) {
				return modelAndView;
			}
		}
		return null;
	}

DefaultErrorViewResolver SpringBoot is the default view resolver error message 

@Override
	public ModelAndView resolveErrorView(HttpServletRequest request, HttpStatus status,
			Map<String, Object> model) {
		ModelAndView modelAndView = resolve(String.valueOf(status.value()), model);
		if (modelAndView == null && SERIES_VIEWS.containsKey(status.series())) {
			modelAndView = resolve(SERIES_VIEWS.get(status.series()), model);
		}
		return modelAndView;
	}

	private ModelAndView resolve(String viewName, Map<String, Object> model) {
		String errorViewName = "error/" + viewName;
		TemplateAvailabilityProvider provider = this.templateAvailabilityProviders
				.getProvider(errorViewName, this.applicationContext);
		if (provider != null) {
			return new ModelAndView(errorViewName, model);
		}
		return resolveResource(errorViewName, model);
	}

	private ModelAndView resolveResource(String viewName, Map<String, Object> model) {
		for (String location : this.resourceProperties.getStaticLocations()) {
			try {
				Resource resource = this.applicationContext.getResource(location);
				resource = resource.createRelative(viewName + ".html");
				if (resource.exists()) {
					return new ModelAndView(new HtmlResourceView(resource), model);
				}
			}
			catch (Exception ex) {
			}
		}
		return null;
	}

SpringBoot will find 4xx error in the catalog, 5xx file as an error view, will not be found when using the error back to errorHtml error page as the default view name