在通用应用程序中使用 POST 方法发送登录数据

本文关键字：登录 方法 数据 应用程序 POST | 更新日期: 2023-09-27 18:33:45

我正在Windows应用商店工作，我正在尝试发送登录名和密码值，这是我的代码：

 try
        {
            string user = login.Text;
            string pass = password.Password;
            ASCIIEncoding encoding = new ASCIIEncoding();
            string postData = "login=" + user + "&mdp=" + pass;
            byte[] data = encoding.GetBytes(postData);
            WebRequest request = WebRequest.Create("myURL/login.php");
            request.Method = "POST";
            request.ContentType = "application/x-www-form-urlencoded";
            request.ContentLength = data.Length;
            Stream stream = request.GetRequestStream();
            stream.Write(data, 0, data.Length);
            stream.Dispose();
            WebResponse response = request.GetResponse();
            stream = response.GetResponseStream();
            StreamReader sr = new StreamReader(stream);

            sr.Dispose();
            stream.Dispose();

        }
        catch (Exception ex)
        {
            ex.Message.ToString();
        }

我有很多这样的错误：

'WebRequest' does not contain a definition for 'Content Length' and no extension method 'ContentLength' accepting a first argument of type 'WebRequest' was found (a using directive or an assembly reference is she missing ?)
'WebRequest' does not contain a definition for 'GetRequestStream' and no extension method 'GetRequestStream' accepting a first argument of type 'WebRequest' was found (a using directive or an assembly reference is she missing? )
'WebRequest' does not contain a definition for 'GetResponse' and no extension method 'GetResponse' accepting a first argument of type 'WebRequest' was found (a using directive or an assembly reference is she missing? )

我是通用Windows应用程序的新手，所以请您知道如何更正我的代码以将登录数据发送到服务器感谢您的帮助

在通用应用程序中使用 POST 方法发送登录数据

正如你所注意到的，.NET Core 中的 WebRequest 类与传统的 .NET 略有不同。首先，我建议您查看HttpClient类，这是UWP中用于使用HTTP的默认类。

如果要使用 WebRequest，为了设置 Content-Length 标头，请使用 Headers 属性：

request.Headers["ContentLength"] = length;

为了获取请求和响应流，您需要使用异步方法、GetRequestStreamAsync 和 GetResponseAsync。同步方法不可用。

毕竟，您的代码将如下所示：

string user = login.Text;
string user = login.Text;
string pass = password.Password;
ASCIIEncoding encoding = new ASCIIEncoding();
string postData = "login=" + user + "&mdp=" + pass;
byte[] data = encoding.GetBytes(postData);
WebRequest request = WebRequest.Create("myURL/login.php");
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.Headers["ContentLength"] = data.Length.ToString();
using (Stream stream = await request.GetRequestStreamAsync()) {
   stream.Write(data, 0, data.Length);
}
using (WebResponse response = await request.GetResponseAsync()) {
   using (Stream stream = response.GetResponseStream()) {
      using (StreamReader sr = new StreamReader(stream)) {
         //
     }
   }
}
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