Spring MVC forwarding to controller with different HTTP method

Question

I have login controller methods like so:

@RequestMapping(value = "/home", method = RequestMethod.GET)
public String home(Locale locale, Model model) {
    // do stuff with locale and model
    // return an html page with a login form
    return "home";
}

@RequestMapping(value = "/account/login", method = RequestMethod.POST)
public String login(Model model, /* username + password params */){
    try {
        // try to login
        // redirect to account profile page
        return "redirect:/account/profile";
    } catch (LoginException e) {
        // log
        // here I want to reload the page I was on but not with a url /account/login
        // possibly using a forward
        model.addAttribute("error", e.getMessage());
        return "forward:/home";
    }
}

The above code works on successful log-in attempt. However, it fails when the log-in attempt fails because Spring's forward uses the current request with the same HTTP method. So because I used a POST to send my username/password (which caused log-in to fail), the forward will also use POST to go to the handler method for /home, home(), which is expecting a GET.

Is there any way in Spring to redirect to another controller method with a different HTTP method while maintaining the current model (since I want to show the error message)?

This is on Spring 3.2.1.

GriffeyDog · Accepted Answer · 2013-02-13 20:36:41Z

4

Do a redirect instead:

return "redirect:/home";

If you need Model attributes to be available after the redirect, you can use flash attributes.

answered Feb 13, 2013 at 20:36

GriffeyDog

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4 Comments

Sotirios Delimanolis Over a year ago

Redirect works for POST/REDIRECT/GET. Is there anything similar for POST/REDIRECT/POST or GET/REDIRECT/POST? Or any other method than GET in the last step?

GriffeyDog Over a year ago

The last step in your description is the GET to /home. This looks like a standard POST/REDIRECT/GET to me.

Sotirios Delimanolis Over a year ago

No it is, I'm just curious if you can do the opposite.

GriffeyDog Over a year ago

I believe a redirect always results in a GET, so no.

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