如何从以下上下文中的响应中获取规范id

本文关键字：获取 响应 id 上下文 | 更新日期: 2023-09-27 18:28:23

我对GCM完全陌生，我使用了以下方法向GCM服务器发送消息。

 public string SendMessage(string RegistrationID, string Message, string AuthString)
    {            
        //-- Create C2DM Web Request Object --//
        HttpWebRequest Request = (HttpWebRequest)WebRequest.Create("https://android.clients.google.com/c2dm/send");
        Request.Method = "POST";
        Request.KeepAlive = false;
        //-- Create Query String --//
        NameValueCollection postFieldNameValue = new NameValueCollection();
        postFieldNameValue.Add("registration_id", RegistrationID);
        postFieldNameValue.Add("collapse_key", "1");
        postFieldNameValue.Add("delay_while_idle", "0");
        // postFieldNameValue.Add("data.message", Message);
        postFieldNameValue.Add("data.payload", Message);           
        string postData = GetPostStringFrom(postFieldNameValue);
        byte[] byteArray = Encoding.UTF8.GetBytes(postData);

        Request.ContentType = "application/x-www-form-urlencoded;charset=UTF-8";
        Request.ContentLength = byteArray.Length;
        Request.Headers.Add(HttpRequestHeader.Authorization, "GoogleLogin auth=" + AuthString);
        //-- Delegate Modeling to Validate Server Certificate --//
        ServicePointManager.ServerCertificateValidationCallback += delegate(
                    object
                    sender,
                    System.Security.Cryptography.X509Certificates.X509Certificate
                    pCertificate,
                    System.Security.Cryptography.X509Certificates.X509Chain pChain,
                    System.Net.Security.SslPolicyErrors pSSLPolicyErrors)
        {
            return true;
        };
        //-- Create Stream to Write Byte Array --// 
        Stream dataStream = Request.GetRequestStream();
        dataStream.Write(byteArray, 0, byteArray.Length);
        dataStream.Close();
        //-- Post a Message --//
        WebResponse Response = Request.GetResponse();
        HttpStatusCode ResponseCode = ((HttpWebResponse)Response).StatusCode;
        if (ResponseCode.Equals(HttpStatusCode.Unauthorized) || ResponseCode.Equals(HttpStatusCode.Forbidden))
        {                
            return "Unauthorized - need new token";
        }
        else if (!ResponseCode.Equals(HttpStatusCode.OK))
        {
            return "Response from web service isn't OK";
            //Console.WriteLine("Response from web service not OK :");
            //Console.WriteLine(((HttpWebResponse)Response).StatusDescription);
        }
        StreamReader Reader = new StreamReader(Response.GetResponseStream());
        string responseLine = Reader.ReadLine();
        Reader.Close();
        return responseLine;
    }

在这种情况下，我需要处理规范id。我看到了下面的代码片段，它可以在Java中使用。

if (result.getMessageId() != null) {
 String canonicalRegId = result.getCanonicalRegistrationId();
 if (canonicalRegId != null) {
   // same device has more than on registration ID: update database
 }
} else {
 String error = result.getErrorCodeName();
 if (error.equals(Constants.ERROR_NOT_REGISTERED)) {
  // application has been removed from device - unregister database
}
}

但是我怎样才能在C#中实现同样的目标呢？它没有getCanonicalIds方法，因为它是我得到的标准web响应。如何找到规范id并将其从表中删除？请提供建议。

如何从以下上下文中的响应中获取规范id

规范Id是已经在不同Id下注册的设备的Id。当您没有这样的Id时，canonical_Ids元素会给您0。但如果它有一个值，那么响应中的canonicl_ids元素将显示计数。在您的响应中，这些id将显示为"registration_id"。这些将按照发送请求的顺序进行。因此，如果响应字符串的第3个和第4个元素的值为"registration_ids"，则意味着您在请求中发送的第3和第4元素id不正确。将表中的ID替换为响应中"registration_Ids"中提供的ID。下面是从C#代码中获取这些索引和ID的代码。

class Program
{
    static void Main(string[] args)
    {
        List<String> ids = new List<String>();
        String json ="{'"multicast_id'": '"xxxxx'",'"success'": 7,'"failure'": 0,'"canonical_ids'": 2,'"results'": [{'"message_id'": '"0:xxx%xxxxx'"}, {'"message_id'": '"0:xxx%xxxxx'"}, {'"registration_id'": '"456'",'"message_id'": '"0:xxx%xxxxx'"}, {'"message_id'": '"0:xxx%xxxxx'"}, {'"message_id'": '"0:xxx%xxxxx'"}, {'"registration_id'": '"123'",'"message_id'": '"0:xxx%xxxxx'"}, {'"message_id'": '"0:xxx%xxxxx'"}]}";
        RootObject decryptedMessage = new JavaScriptSerializer().Deserialize<RootObject>(json);
        int position = 0;
        Dictionary<int, String> canonicalIdsAndIndexes = new Dictionary<int, string>();
        foreach (var item in decryptedMessage.results)
        {
            if (item.registration_id != null)
            {
                canonicalIdsAndIndexes.Add(position, item.registration_id);
                Console.WriteLine("message id: {0}, registrationid: {1}", item.message_id, item.registration_id);
            }
            position++;
        }
        Console.ReadLine();
    }
}
public class Result
{
    public string message_id { get; set; }
    public string registration_id { get; set; }
}
public class RootObject
{
    public string multicast_id { get; set; }
    public int success { get; set; }
    public int failure { get; set; }
    public int canonical_ids { get; set; }
    public List<Result> results { get; set; }
}
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