C＃发布XML到URL不起作用(C# Post XML to URL not working)

 首先，我是一个WEB NOOB。 这可能解释了这个问题。 无论如何，当我使用网页测试应用程序将xml发布到网址时，一切正常。 这里是从网页（我认为）pertinant代码： 
 
<form action="/gateway/xml" method="post" id="xml-test-form">
  <textarea name="data">

  {some xml is in here}

  </textarea>
  <input type="submit" value="Submit Test" />
</form>
 
 当我尝试使用缓存编码（ASCII或UTF8）的内容类型（“text / xml”或“application / x-www-form-urlencoded”）的C＃（WebRequest或HttpWebRequest）提交完全相同的XML时，这意味着XML不能在另一端读取。 这是错误： 
 
<?xml version="1.0"?>
<SubmitOrdersResponse>
  <status code="0">FAILURE</status>
  <errors>
    <error code="1001">Invalid XML Version</error>
  </errors>
</SubmitOrdersResponse>
<br /><b>Warning</b>:  DOMDocument::loadXML() [<a href='domdocument.loadxml'>domdocument.loadxml</a>]: Empty string supplied as input in <b>/var/www/vhosts/reports.gogetagrip.com/httpdocs/application/models/Gateway.php</b> on line <b>90</b><br />
 
 我可以通过删除名为的XML元素使用Web测试人员重现此错误。 我认为这是检查的第一个元素，因此是“INVALID XML VERSION”错误。 我认为发生的事情是我的提交文件以不正确的格式发送，并且该内容不能被读取。 具体而言，我认为我必须模拟发布数据，其中数据来自“数据”表单字段（参见上文）。 我不知道如何使用WebRequest类来设置它，所以我无法测试它。 这是我的代码： 
 
static private void Post(string sURL, string sXml) {
  try {
    //Our postvars
    byte[] buffer = Encoding.UTF8.GetBytes(sXml);  // Tried ASCII...same result
    HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(sURL);  // Tried WebRequest ... same result
    WebReq.Method = "POST";
    WebReq.ContentType = "application/x-www-form-urlencoded";  // tried "text/xml"... same result
    WebReq.ContentLength = buffer.Length;
    Stream ReqStream = WebReq.GetRequestStream();
    ReqStream.Write(buffer, 0, buffer.Length);
    ReqStream.Close();
    WebResponse WebRes = WebReq.GetResponse();
    //Console.WriteLine(WebResp.StatusCode);
    //Console.WriteLine(WebResp.Server);
    Stream ResStream = WebRes.GetResponseStream();
    StreamReader ResReader = new StreamReader(ResStream);
    string sResponse = ResReader.ReadToEnd();
  } catch (Exception ex) {

  } finally {

  }
}
 
 有任何想法吗？？？？？ 

First of all, I am a WEB NOOB. Which probably explains this question. Anyway, when I use the web page test app to post xml to a url, everything works fine. Here is the pertinant code from the web page (i think):
 
<form action="/gateway/xml" method="post" id="xml-test-form">
  <textarea name="data">

  {some xml is in here}

  </textarea>
  <input type="submit" value="Submit Test" />
</form>
 
When I try to submit the exact same XML using C# (WebRequest or HttpWebRequest) with content type of ("text/xml" or "application/x-www-form-urlencoded") with a buffer encoded (ASCII or UTF8) I get an error that implies the XML cant be read at all on the other end. Here is the error:
 
<?xml version="1.0"?>
<SubmitOrdersResponse>
  <status code="0">FAILURE</status>
  <errors>
    <error code="1001">Invalid XML Version</error>
  </errors>
</SubmitOrdersResponse>
<br /><b>Warning</b>:  DOMDocument::loadXML() [<a href='domdocument.loadxml'>domdocument.loadxml</a>]: Empty string supplied as input in <b>/var/www/vhosts/reports.gogetagrip.com/httpdocs/application/models/Gateway.php</b> on line <b>90</b><br />
 
I can reproduce this error using the web tester by removing a XML element named . I think this is the first element that is checked for, and hence the "INVALID XML VERSION" error. I think what is happening is my submittal is comming accross slighlty in the wrong format and that element can't be read. I think specifically I have to simulate a posting data where my data is comming from the "data" form field (see above). I don't know how to set that using the WebRequest class, so I can't test it. Here is my code:
 
static private void Post(string sURL, string sXml) {
  try {
    //Our postvars
    byte[] buffer = Encoding.UTF8.GetBytes(sXml);  // Tried ASCII...same result
    HttpWebRequest WebReq = (HttpWebRequest)WebRequest.Create(sURL);  // Tried WebRequest ... same result
    WebReq.Method = "POST";
    WebReq.ContentType = "application/x-www-form-urlencoded";  // tried "text/xml"... same result
    WebReq.ContentLength = buffer.Length;
    Stream ReqStream = WebReq.GetRequestStream();
    ReqStream.Write(buffer, 0, buffer.Length);
    ReqStream.Close();
    WebResponse WebRes = WebReq.GetResponse();
    //Console.WriteLine(WebResp.StatusCode);
    //Console.WriteLine(WebResp.Server);
    Stream ResStream = WebRes.GetResponseStream();
    StreamReader ResReader = new StreamReader(ResStream);
    string sResponse = ResReader.ReadToEnd();
  } catch (Exception ex) {

  } finally {

  }
}
 
Any Ideas?????

原文：https://stackoverflow.com/questions/1368419