Spring redirect from ErrorController - spring-boot

Question

I have a number of generic error pages which are used by multiple applications other than the one I have control of. I would like to configure the Spring Boot error controller to do a redirect to one of these pages. Unfortunately it's not working.
Eg.
#Controller
public class MyCustomErrorController implements ErrorController {
#GetMapping(value = "/error")
public String handleError(HttpServletRequest request) {
Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
if (status != null) {
Integer statusCode = Integer.valueOf(status.toString());
if (statusCode == HttpStatus.NOT_FOUND.value()) {
return "redirect:https://www.example.com/error-404";
}
}
return "redirect:https://www.example.com/error-500";
}
#Override
public String getErrorPath() {
return "/error";
}
}
If for example I purposefully mistype a URL I can see the response has the Location header with the 404 URL I am expecting but the browser doesn't actually redirect. Any ideas if it's possible to do a redirect from within a custom ErrorController?
Could this be because I'm trying to test this from localhost, and Strict-Transport-Security is ignoring the response Location header value (which is on a FQDN)?

Answer 1

How about adding HttpServletResponse to the method param and use it for redirection?
HttpServletResponse response;
response.sendRedirect("https://www.example.com/error-404");
Reference HERE

Answer 2

Add the following properties in application.proerties file
server.error.whitelabel.enabled=false

Answer 3

try this.
#Controller
public class MyCustomErrorController implements ErrorController {
#GetMapping(value = "/error")
public String handleError(HttpServletRequest request) {
Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
if (status != null) {
Integer statusCode = Integer.valueOf(status.toString());
if (statusCode == HttpStatus.NOT_FOUND.value()) {
return "redirect:/error-404"; //remove your https://www.example.com
}
}
return "redirect:/error-500";
}
#Override
public String getErrorPath() {
return "/error";
}
}
** EDIT **
change the url mapping and try again:
error-404 -> error/404
error-500 -> error/500
#Controller
public class MyCustomErrorController implements ErrorController {
#GetMapping(value = "/error")
public String handleError(HttpServletRequest request) {
Object status = request.getAttribute(RequestDispatcher.ERROR_STATUS_CODE);
if (status != null) {
Integer statusCode = Integer.valueOf(status.toString());
if (statusCode == HttpStatus.NOT_FOUND.value()) {
return "redirect:/error/404"; //remove your https://www.example.com
}
}
return "redirect:/error/500";
}
#Override
public String getErrorPath() {
return "/error";
}
}
error/404
#GetMapping("/error/404")
error/500
#GetMapping("/error/500")