如何创建一个xml(编码utf-16BE)并在HttpWebRequest中作为流发送

Question

我正在使用HttpWebRequest将Xml作为流发送，但我收到以下响应："prolog中不允许内容">

我应该使用编码 UTF-16BE，但我不知道怎么做。

我当前的代码：

private void sendXml(string protocolo, string path)
{
string base64 = Convert.ToBase64String(Encoding.Default.GetBytes("user:password"));
string authorization = String.Concat("Basic ", base64);
String finalResult;
HttpWebRequest hwrRequest = (HttpWebRequest)HttpWebRequest.Create("https://address/"+protocolo);
hwrRequest.UseDefaultCredentials = true;
hwrRequest.Headers.Add("Authorization", authorization);
hwrRequest.Method = "PUT";
string finalXML = @"<?xml version=""1.0"" encoding=""UTF-16BE""?>....";
byte[] bytes = Encoding.BigEndianUnicode.GetBytes(finalXML);
hwrRequest.ContentLength = bytes.Length;
using (Stream putStream = hwrRequest.GetRequestStream())
{
putStream.Write(bytes, 0, bytes.Length);
}
using (HttpWebResponse response = (HttpWebResponse)hwrRequest.GetResponse())
using (StreamReader reader = new StreamReader(response.GetResponseStream()))
{
finalResult = reader.ReadToEnd();
visualiza.Text = visualiza.Text + "n " + finalResult;
}
}

生成 xmlDocument 的方法

private void geraXML()
{
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.PreserveWhitespace = false;
byte[] xml = Encoding.BigEndianUnicode.GetBytes(@"<?xml version=""1.0"" encoding=""UTF-16BE""?>...");
MemoryStream ms = new MemoryStream(xml, true);
xmlDoc.Load(ms);
string caminho = path/+"xmldoc.xml";            
string nomeArquivo = "xmldoc.xml";
xmlDoc.Save(caminho);                      
geraHASH(caminho, nomeArquivo);            
}

Answer 1

Encoding类有 - BigEndianUnicode

获取使用大端字节顺序的 UTF-16 格式的编码。

因此，您可以更改代码以使用它(而不是ASCII

string finalXML = @"<?xml version=""1.0"" encoding=""UTF-16BE""?>";
byte[] bytes = Encoding.BigEndianUnicode.GetBytes(finalXML);

如果你真的对Unicode和编码的迷人世界感兴趣，你可以看看这个