Configure spring boot to redirect 404 to a single page app [duplicate]

Answer 1

Simply implementing the org.springframework.boot.web.servlet.error.ErrorController did the trick for me. I use SpringBoot 2.0 with React. (If you are interested in how to do that here is a boilerplate project made by me: https://github.com/archangel1991/react-with-spring)

@Controller
public class CustomErrorController implements ErrorController {

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

I am not sure why is this working though.