Spring错误页面和web.xml的问题

Question

here is my web.xml:

<error-page>
    <error-code>404</error-code>
    <location>/error/404</location>
</error-page>

Below is my Controller class :

import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;
import javax.servlet.http.HttpServletRequest;


@RequestMapping(value = "/error")
@Controller
public class ErrorController {

@RequestMapping(value = {"/307", "/400", "/401", "/403", "/404", "/405", "500", "503"})
public ModelAndView error(HttpServletRequest request) throws Exception {
    String path = request.getServletPath().replace("/error/", "");
    return new ModelAndView("redirect:/error/view/"+path);
}

if I request error url like this

http://localhost:8080/erro/

it display 404 error-page but it change url

http://localhost:8080/error/view/404

If invalid URL is requested, the error page appears but old url has changed. What do I need to fix so that old url does not change and only the error page appears?

thanks :)

Answer 1

In this case you need to use forward: instead of redirect:

Redirect is working on client side by sending Location header to the browser, that's why URL is changing.

Forward is working on the server side by choosing the file that will be send as a response to the browser.

But be very careful with forward , because it could lead to a security issue if you will use it with user-controlled input. In that case attacker will be able to download any file from your WAR (it depends on your configuration but in some extremely cases he will be able to download even compiled java classes).

Answer 2

Remove the "redirect:". This will avoid the redirect and the url will not change.

@RequestMapping(value = {"/307", "/400", "/401", "/403", "/404", "/405", "500", "503"})
public ModelAndView error(HttpServletRequest request) throws Exception {
   String path = request.getServletPath().replace("/error/", "");
   return new ModelAndView("/error/view/"+path);

}