Android 使用GCM和ASP.net发送数据

我有下面的代码，它应该使用Google云消息技术将asp.net（VB.net）中开发的web应用程序中的数据发送到android设备，但我一直遇到这个错误： 远程服务器返回错误：（401）未经授权

代码如下：

Dim regID As String = "REG_ID_ that i got when I developed the Clint side of this technology"
Dim request As WebRequest = WebRequest.Create("https://android.googleapis.com/gcm/send")
request.Method = "POST"
request.ContentType = "application/x-www-form-urlencoded"
request.Headers.Add("Authorization:Here_I_Provided_the_Server_API_Key")
Dim collapsKey = Guid.NewGuid.ToString("N")
Dim postdata As String = regID + TextBox1.Text + collapsKey
Dim byteArray As Byte() = Encoding.UTF8.GetBytes(postdata)
request.ContentLength = byteArray.Length
Dim dataStream As Stream = request.GetRequestStream
dataStream.Write(byteArray, 0, byteArray.Length)
dataStream.Close()
Dim resposne As WebResponse = request.GetResponse
Dim dataresponse As Stream = resposne.GetResponseStream
Dim reader As New StreamReader(dataresponse)
Dim sResponseFromServer As String = reader.ReadToEnd
Label1.Text = sResponseFromServer
reader.Close()
dataresponse.Close()
resposne.Close()

你知道我该如何解决这个问题吗

问候

Husam

可能代替

"Authorization:Here_I_Provided_the_Server_API_Key"

你应该试试

"Authorization: key=Here_I_Provided_the_Server_API_Key"

---

还要确保您在处理GCM请求的应用程序端具有正确的发件人ID。

我还按照Demonick的建议为我的请求添加了另一个标题：request.Headers.Add（“发件人：ID=我的\u项目的\u ID”）。我还将Dim postdata更改为String=regID+TextBox1.Text+collapsKey，将以下Dim postdata更改为String=“registration\u id=“+regID+”&data.message=“+TextBox1.Text+”&collapsKey=“+collapsKey