截取url地址的参数存储到Hashmap中，大家看看，能提供更好解析办法吗

String url = "mx://gfandetail?p_id=4310&source_type=0";
        String arg = url.substring(url.indexOf("?")+1,url.length());
        String[] strs = arg.split("&");
        HashMap<String, String> map = new HashMap<String, String>();
        for(int x=0;x<strs.length;x++){
            String[] strs2 = strs[x].split("=");
            if(strs2.length==2){
                System.out.println(strs2[0]+"  "+strs2[1]);
                map.put(strs2[0], strs2[1]);
            }
        }