How to replace Spring Boot's "Whitelabel Error Page" with a blank page?

Question

On any exceptions, by default Spring Boot routes to /error, which generates an error HTML page:

Whitelabel Error Page

This application has no explicit mapping for /error, so you are seeing this as a fallback.
Wed Oct 31 16:01:01 CET 2018
There was an unexpected error (type=Not Found, status=404)

Question: how can I instead show a blank page by default for a certain endpoint only?

There is a property server.error.whitelabel.enabled=false, but that disables the error handling entirely, so that the webservers default error page is shown (e.g. on Tomcat a 404 error page).

That's not what I want. I'd just like to show a blank plain page. Or so to say: an empty response body. But how?

Because, for development and testing the "Whitelabel Error Page" is fine. But in production I'd like to hide any exception details entirely.

Are you asking, you want to redirect to your page ? Did you look this https://stackoverflow.com/questions/25356781/spring-boot-remove-whitelabel-error-page — want2learn, Oct 31 '18 at 15:06
what about using `@ControllerAdvice` and return empty response if there is any exception. — want2learn, Oct 31 '18 at 15:12
Entirely up to your requirements. But if it is rest controller I would rather return response with exception message rather than empty page. — want2learn, Oct 31 '18 at 15:15
Indeed for most of the endpoints that's correct (and that's what I do). But for a certain endpoint I always want to show that blank page only. — membersound, Oct 31 '18 at 15:18

score 4 · Answer 1 · answered Oct 31 '18 at 15:15

I think this tutorial describes the way to go: https://www.baeldung.com/spring-boot-custom-error-page

Essentially you would do something like this:

@Controller
public class MyErrorController implements org.springframework.boot.web.servlet.error.ErrorController {

    @RequestMapping("/error")
    public String handleError() {
        //do something like logging
        return "error";
    }

    @Override
    public String getErrorPath() {
        return "/error";
    }
}

And then you'd make sure the default behaviour is turned off.

@EnableAutoConfiguration(exclude = {ErrorMvcAutoConfiguration.class})
@SpringBootApplication
public class Application {

    public static void main(String... args) {
        SpringApplication.run(Application.class, args);
    }

}

score 2 · Accepted Answer · edited Jun 18 '21 at 04:00

2

I just discovered that this "Whitelabel Error Page" is only shown inside a web browser requesting a text/html content type.

If a Spring REST webservice is accessed from a native client using just application/json, the error is translated to JSON automatically.

In case one would really want to show a blank page for web browsers, one could just override the BasicErrorController#errorHtml() bean method somehow.

edited Jun 18 '21 at 04:00

informatik01

16,038
10
74
104

answered Nov 06 '18 at 09:02

membersound

81,582
193
585
1,120

Finally I did research for an issue which is not exists . – BEJGAM SHIVA PRASAD May 11 '20 at 14:42
How to override `BasicErrorController.errorHtml()`? Any example? – happy_marmoset Jun 15 '21 at 05:43

How to replace Spring Boot's "Whitelabel Error Page" with a blank page?

2 Answers2