C# 中的 HTTP 发布 XML 数据

Question

我需要将 XML 数据 HTTP 发布到具有 XMLdata 名称的 Textarea 的 URL。我的 XMl 数据已准备就绪，位于 XDocument Sendingxml = xml;但我尝试过的邮政编码不起作用。主要是因为我不知道如何将 XML 数据放入 postData 变量中，因为它只接受字符串。这是我的代码：

        XDocument Sendingxml = xml;

        //  string Sendingxml = "<?xml version=1.0 encoding=UTF-8> <PluginData> <Credential UserName=avosfieldagent01 AuthenticationToken=61cc3957744742dca238c4dd7cbca702 /><Session><PropertyAddress>5 Crosskey</PropertyAddress><PropertyAddress2/><PropertyCity>California</PropertyCity><PropertyState>CA</PropertyState><PropertyZip>92620</PropertyZip><PropertyType>Condo</PropertyType><SourceReferenceId>45643</SourceReferenceId><SessionId>2013070100158346</SessionId><SessionCompleteReturnURL/><CustomerId/><BluebookOrderCheckSum>681a598cf23f412095f6092c281823e6</BluebookOrderCheckSum><BluebookOrderId>11160</BluebookOrderId> </Session></PluginData>";

        // Create a request using a URL that can receive a post. 
        WebRequest request =
            WebRequest.Create("https://test.bluebookcva.net/order/testdirectplugin/3");
        // Set the Method property of the request to POST.
        request.Method = "POST";

        // Create POST data and convert it to a byte array.
        string postData = "XMLData=" + Sendingxml;    //My problem is here as I need postData  as XDocument.


        byte[] byteArray = Encoding.UTF8.GetBytes(postData);
        // Set the ContentType property of the WebRequest.
        request.ContentType = "application/x-www-form-urlencoded";
        // Set the ContentLength property of the WebRequest.
        request.ContentLength = byteArray.Length;
        // Get the request stream.
        Stream dataStream = request.GetRequestStream();
        // Write the data to the request stream.
        dataStream.Write(byteArray, 0, byteArray.Length);
        // Close the Stream object.
        dataStream.Close();
        // Get the response.
        WebResponse response = request.GetResponse();
        // Display the status.
        Console.WriteLine(((HttpWebResponse)response).StatusDescription);
        // Get the stream containing content returned by the server.
        dataStream = response.GetResponseStream();
        // Open the stream using a StreamReader for easy access.
        StreamReader reader = new StreamReader(dataStream);
        // Read the content.
        string responseFromServer = reader.ReadToEnd();
        // Display the content.
        Console.WriteLine(responseFromServer);
        // Clean up the streams.
        reader.Close();
        dataStream.Close();
        response.Close();

Answer 1

一般：

以下函数是发布 XML 数据并获取响应（作为字符串）的简单方法的示例：

public string postXMLData(string destinationUrl, string requestXml)
{
    HttpWebRequest request = (HttpWebRequest)WebRequest.Create(destinationUrl);
    byte[] bytes;
    bytes = System.Text.Encoding.ASCII.GetBytes(requestXml);
    request.ContentType = "text/xml; encoding='utf-8'";
    request.ContentLength = bytes.Length;
    request.Method = "POST";
    Stream requestStream = request.GetRequestStream();
    requestStream.Write(bytes, 0, bytes.Length);
    requestStream.Close();
    HttpWebResponse response;
    response = (HttpWebResponse)request.GetResponse();
    if (response.StatusCode == HttpStatusCode.OK)
    {
        Stream responseStream = response.GetResponseStream();
        string responseStr = new StreamReader(responseStream).ReadToEnd();
        return responseStr;
    }
    return null;
}

根据您的具体情况：

代替：

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

使用：

request.ContentType = "text/xml; encoding='utf-8'";

另外，删除：

string postData = "XMLData=" + Sendingxml;

并替换：

byte[] byteArray = Encoding.UTF8.GetBytes(postData);

与：

byte[] byteArray = Encoding.UTF8.GetBytes(Sendingxml.ToString());

Answer 2

AlliterativeAlice 的例子对我帮助很大。不过，就我而言，我正在与之交谈的服务器不喜欢在内容类型中在 utf-8 周围加上单引号。它使用通用的"Server Error" 失败了，并且花了几个小时才弄清楚它不喜欢什么：

request.ContentType = "text/xml; encoding=utf-8";