How to map two different urls in a Controller: one url with param and the same without the param?

Question

I have two URLs to map: The root : http://www.website.com : When user request the root I want to show the home page. The root with parameter: http://www.website.com?ref=xxxx : When user requests this, I want to create a cookie and go to the root ("/").

Here is my controller:

@RequestMapping(value="/",method=RequestMethod.GET)
public String doGreatThings(
    @RequestParam(value="ref", required=false) String identifier,
    ServletRequest request, 
    ServletResponse response){

        if(identifier!=null){

        }
        return "/";
    }

This gives me an infinite loop. Is it possible to distinguish between both mappings in the controller?

http://www.mywebsite.com

vs.

http://www.mywebsite.com?ref=xxxxx

possible duplicate of [create two method for same url pattern with different arguments](http://stackoverflow.com/questions/15853035/create-two-method-for-same-url-pattern-with-different-arguments) — kryger, Jun 09 '15 at 14:33

score 2 · Answer 1 · edited May 23 '17 at 12:14

The answer linked in some of the previous comments is the way to go.

You should use the params attribute of the @RequestMapping to filter by param, but note that you can also negate this filter, so map to an url that doesn't contain a param. Following should be a mapping that works for you

the mapping without the parameter note the ! that marks the negation

@RequestMapping(value="/",method=RequestMethod.GET, params="!ref")
public ModelAndView doGreatThings(
    @RequestParam(value="ref", required=false) String identifier,
    ServletRequest request, 
    ServletResponse response){
    // show home page
}

the mapping with the parameter

@RequestMapping(value="/",method=RequestMethod.GET, params="ref")
public ModelAndView doGreatThings(
    @RequestParam(value="ref") String identifier,
    ServletRequest request, 
    ServletResponse response){
        // create the cookie
        // redirect to home page
}

score 0 · Answer 2 · edited May 23 '17 at 12:32

0

I have edited my answer as per @kryger comment, You can use params attribute to filter by parameter.

Please check this link for the original answer.

edited May 23 '17 at 12:32

Community

1
1

answered Jun 09 '15 at 14:23

Keerthivasan

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This is not true, as per my answer to a nearly-identical question: http://stackoverflow.com/a/15853217/1240557 – kryger Jun 09 '15 at 14:37
@kryger Thank you for correcting me.. Cheers.. I learned something new today. – Keerthivasan Jun 10 '15 at 04:33

How to map two different urls in a Controller: one url with param and the same without the param?

2 Answers2