Matrix param not working in jax-rs web services using jersey - web-services

Question

I am using following code for matrix param in web services using jersey.
All variables in the method getFromMatrixParam() are getting value from the uri except color variable which is supposed to get value from matrix param in uri.
Can some one explain me why it is not working
import javax.ws.rs.GET;
import javax.ws.rs.MatrixParam;
import javax.ws.rs.Path;
import javax.ws.rs.PathParam;
import javax.ws.rs.Produces;
#Path("/cars")
public class CarResource {
#GET
#Path("/matrix/{car}/{model}/{year}")
#Produces("text/plain")
public String getFromMatrixParam(#PathParam("car") String car, #PathParam("model") String model, #MatrixParam("color") String color, #PathParam("year") String year) {
return "A " + color + " " + car + " " + model + " of " + year + " made";
}
}
URI used to invoke the above method is as below :
http://localhost:8080/Webservice_Restful_BBCH05d_Matrix_Parameter/webapi/cars/matrix/honda/city;color=black/2015
The value of color is coming as null.
The output of the above uri is :
"A null honda city of 2015 made"
Can some explain me why matrix param is not getting populated with proper value from uri ?

Answer 1

#Matrix Param is, currently, not work except in last path.
You can get with like this
public String getFromMatrixParam(
...,
#PathSegment("city") cityPath,
...) {
String color = cityPath.getMatrixParameters().get("color");
}