protected void Page_Load(object sender, EventArgs e)

{

HttpRequest request = HttpContext.Current.Request;
//在软件应用中心跳转到ISV应用时的URL参数中取得,user_id、app_instance_id和token 
        string aepUserId = request.Params["user_id"];
string aepInstanceId = request.Params["app_instance_id"];
string appId = request.Params["app_id"]; //软件注册时获得 
        string token = request.Params["token"]; //每次点击生成不一样的token，并只有10秒钟有效 
        string code = "58b43970b12711ddb3e6cfd602199686";//软件注册时获得 
        System.DateTime timestamp = System.DateTime.Now;//时间获得当前系统时间 

//sip_sign签名字段的生成，将CERT CODE和所有接口要传的参数进行组合，再将组装好的字符串进行md5加密后转成16进制后得到一个32位的密文 
        string sipsign = code + "appId" + appId + "appInstanceId" + aepInstanceId + "sip_apinamealisoft.validateUser" + "sip_appkey" + appId + "sip_timestamp" + timestamp + "token" + token + "userId" + aepUserId;


MD5CryptoServiceProvider md5 = new MD5CryptoServiceProvider();

sipsign = BitConverter.ToString(md5.ComputeHash(Encoding.UTF8.GetBytes(sipsign))).Replace("-", "");
//sip_sign生成END 

//系统级参数拼装，包括sip_appkey、sip_apiname、sip_timestamp和sip_sign，sip_apiname是接口名这里举validateUser为例 
        string SIPdate = "sip_appkey=" + appId + "&sip_apiname=alisoft.validateUser&sip_timestamp=" + timestamp + "&sip_sign=" + sipsign;
//接口级参数拼装 
        string apidate = "&userId=" + aepUserId + "&appId=" + appId + "&appInstanceId=" + aepInstanceId + "&token=" + token;


ASCIIEncoding encoding = new ASCIIEncoding();
byte[] postdata = encoding.GetBytes(SIPdate + apidate);//所有要传参数拼装 
// Prepare web request
//目前阿里软件的服务集成平台（SIP）的接口测试地址是：http://sipdev.alisoft.com/sip/rest，生产环境地址是：http://sip.alisoft.com/sip/rest, 
//这里使用测试接口先，到正式上线时需要做切换 
        HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create("http://sipdev.alisoft.com/sip/rest");

myRequest.Method = "POST";

myRequest.ContentType = "application/x-www-form-urlencoded";

myRequest.ContentLength = postdata.Length;

Stream newStream = myRequest.GetRequestStream();
// Send the data. 
        newStream.Write(postdata, 0, postdata.Length);

newStream.Close();
// Get response 
        HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();

StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
string content = reader.ReadToEnd();

//解析接口返回值，这里选用XML格式的解析，接口默认返回是XML格式 
        XmlDocument xmlDoc = new XmlDocument();

xmlDoc.LoadXml(content);

XmlNode xn = xmlDoc.SelectSingleNode("String");

XmlElement xe = (XmlElement)xn;
string result = xe.InnerText;
if ("1".Equals(result))

{
//如果是使用者。。。。 
            windowalert("使用者");

}
else if ("0".Equals(result))

{
//如果是订阅者。。。。 
            windowalert("订阅者");

}

}

private void windowalert(string str)

{

HttpResponse Response = HttpContext.Current.Response;

Response.Write("<script>alert('" + str + "');window.close(true);</script>");

}