Spring Boot Redirect to /

Question

I would like to redirect the user to "/" page.

In my controller, I have:

    @RequestMapping(value = "/uploadImage", method = {RequestMethod.POST})
    public ModelAndView addUser (@RequestParam(value="file") MultipartFile file,
            HttpServletRequest request,
            ModelMap model) {
    ...
    if (...) { 
            model.addAttribute("uploadFileError", true);
            return new ModelAndView("/", model);
    } 
    return new ModelAndView("/", model);

and in my receiving page:

    @RequestMapping(value = "/")
    public String root(Model model, HttpServletRequest request) {
    ...
    return "index";
    }

but Spring returns "Error resolving template [/], template might not exist or might not be accessible by any of the configured Template Resolvers"

Please help. Thanks.

Use `return "redirect:"` `+ ` `YOU_URL;` – kozmo Jun 07 '19 at 04:41 — kozmo, Jun 07 '19 at 04:41

score 2 · Accepted Answer · answered Jun 07 '19 at 06:40

As per the explanation given it seems like you need to redirect to some other controller in the same server. Below code will suits you to manage this.

@RequestMapping(value = "/uploadImage", method = { RequestMethod.POST })
    public ModelAndView addUser(@RequestParam(value = "file") MultipartFile file, HttpServletRequest request,
            ModelMap model) {

        return new ModelAndView("redirect:/", model);
    }

For further reading you can refer to below differences of redirect and forward

Forward:

The request will be further processed on the server side
The client isn’t impacted by forward, URL in a browser stays the same
Request and response objects will remain the same object after forwarding.
Request-scope objects will be still available

Redirect:

The request is redirected to a different resource
The client will see the URL change after the redirect
A new request is created
Redirect is normally used within Post/Redirect/Get web development pattern

If you just want to test the redirection run below without MultipartFile @AlanBE

@RequestMapping(value = "/uploadImage", method = { RequestMethod.POST })
    public ModelAndView addUser(/* @RequestParam(value = "file") MultipartFile file, */ HttpServletRequest request,
            ModelMap model) {

        return new ModelAndView("redirect:/", model);
    }

score 0 · Answer 2 · edited Jun 07 '19 at 05:14

0

Redirect as follows:

@RequestMapping(value = "/uploadImage", method = {RequestMethod.POST})
    public void addUser (@RequestParam(value="file") MultipartFile file,
            HttpServletRequest request,HttpServletResponse response
            ModelMap model) {
    ...
response.sendRedirect("/");

edited Jun 07 '19 at 05:14

Phil

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answered Jun 07 '19 at 04:58

DEBENDRA DHINDA

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score 0 · Answer 3 · answered Jun 07 '19 at 05:18

Try this.

@RequestMapping(value = "/uploadImage", method = {RequestMethod.POST})
    public ModelAndView addUser (@RequestParam(value="file") MultipartFile file,
            HttpServletRequest request,
            ModelMap model) {
    ...

    return "redirect:/ http://yoururl/";

score 0 · Answer 4 · answered Jun 07 '19 at 06:04

0

I suspect if you want to forward or redirect. Redirection is for external domains or servers while forwarding is within the same server to another resource for further processing.

There are 2 options for redirect:

 return new ModelAndView("redirect:/redirectedUrl", model);

Here, redirectedUrl is relative to the server context. In your case it seems to be "/".

But it can be a full/complete HTTP URL such as : http://localhost:8080/newDomain/s...

If forward is what you really intend, try:

 return new ModelAndView("redirect:/redirectedUrl", model);

answered Jun 07 '19 at 06:04

TechFree

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I just need to redirect to '/'. How should I do it? – AlanBE Jun 07 '19 at 06:24
Try "redirect:/". – TechFree Jun 07 '19 at 06:30
try the above code which has added.The test worked fine for redirection. @AlanBE – Lahiru Wijesekara Jun 07 '19 at 06:48
But are you redirecting to another domain ? Forward was not wanted ? – TechFree Jun 07 '19 at 06:50
Please do upvote of solution works – TechFree Jun 07 '19 at 14:05

score 0 · Answer 5 · answered Jun 07 '19 at 06:28

There are different ways to redirect here is simple to try this

@RequestMapping(value = "/uploadImage", method = RequestMethod.POST)
public ModelAndView addUser (@RequestParam(value="file")MultipartFile file, HttpServletRequest request,
        ModelMap model) {
       ...
return new ModelAndView( "redirect:/index",model);

}

and receiving page like

  @RequestMapping(value = "/index", method=RequestMethod.GET)
public String root(Model model, HttpServletRequest request) {
...
return "index";
}

Spring Boot Redirect to /

5 Answers5