With Spring 3.0, can I make an optional path varia

Question

With Spring 3.0, can I have an optional path variable?

For example

@RequestMapping(value = "/json/{type}", method = RequestMethod.GET)
public @ResponseBody TestBean testAjax(
        HttpServletRequest req,
        @PathVariable String type,
        @RequestParam("track") String track) {
    return new TestBean();
}

Here I would like /json/abc or /json to call the same method.
One obvious workaround declare type as a request parameter:

@RequestMapping(value = "/json", method = RequestMethod.GET)
public @ResponseBody TestBean testAjax(
        HttpServletRequest req,
        @RequestParam(value = "type", required = false) String type,
        @RequestParam("track") String track) {
    return new TestBean();
}

and then /json?type=abc&track=aa or /json?track=rr will work

Answer 1

You could use a :

@RequestParam(value="somvalue",required=false)

for optional params rather than a pathVariable