rest - With Spring 3.0, can I make an optional path variable? -

with spring 3.0, can have 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 /json/abc or /json call same method.
1 obvious workaround declare type 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 /json?type=abc&track=aa or /json?track=rr work

you can't have optional path variables, can have 2 controller methods call same service code:

@requestmapping(value = "/json/{type}", method = requestmethod.get) public @responsebody testbean typedtestbean(         httpservletrequest req,         @pathvariable string type,         @requestparam("track") string track) {     return gettestbean(type); }  @requestmapping(value = "/json", method = requestmethod.get) public @responsebody testbean testbean(         httpservletrequest req,         @requestparam("track") string track) {     return gettestbean(); }