how to send an array in url request

My requirement is as follows:

I want to give actor name, start date, end date and get all the films he acted in that period.

For that reason, my service request is like this.

  http://localhost:8080/MovieDB/GetJson?name=Actor&startDate=20120101&endDate=20120505

Now, i want to improve it. I want to give a start date, end date and more than one actor name and want to see all those actors movies in that period.

I am not sure how should my url look to support such thing.

I am writing a java based web service using spring.

Below code is to support one actor

   @RequestMapping(value = "/GetJson", method = RequestMethod.GET) 
    public void getJson(@RequestParam("name") String ticker, @RequestParam("startDate") String startDate, @RequestParam("endDate") String endDate) {
   //code to get results from db for those params.
 }

One solution i am thinking is using a % symbol to seperate actor names. For example:

 http://localhost:8080/MovieDB/GetJson?name=Actor1%Actor2%Actor3&startDate=20120101&endDate=20120505

Now, in the controller i will parse the name string with % and get back all actors names.

Is this a good way to do this or is there a standard approach?

Thanks