我们公司与另一家名为iMatrix的公司合作,他们有一个用于创建我们自己的表格的API。他们已经确认我们的请求正在命中他们的服务器,但响应应该以参数确定的几种方式之一返回。我收到200 OK响应,但响应头中没有内容和内容长度为0.
这是网址: https://secure4.office2office.com/designcenter/api/imx_api_call.asp
我正在使用这个课程:
命名空间WebSumit { public enum MethodType { POST = 0, GET = 1 }
public class WebSumitter
{
public WebSumitter()
{
}
public string Submit(string URL, Dictionary<string, string> Parameters, MethodType Method)
{
StringBuilder _Content = new StringBuilder();
string _ParametersString = "";
// Prepare Parameters String
foreach (KeyValuePair<string, string> _Parameter in Parameters)
{
_ParametersString = _ParametersString + (_ParametersString != "" ? "&" : "") + string.Format("{0}={1}", _Parameter.Key, _Parameter.Value);
}
// Initialize Web Request
HttpWebRequest _Request = (HttpWebRequest)WebRequest.Create(URL);
// Request Method
_Request.Method = Method == MethodType.POST ? "POST" : (Method == MethodType.GET ? "GET" : "");
_Request.UserAgent = "Mozilla/4.0 (compatible; MSIE 6.0; Win32)";
// Send Request
using (StreamWriter _Writer = new StreamWriter(_Request.GetRequestStream(), Encoding.UTF8))
{
_Writer.Write(_ParametersString);
}
// Initialize Web Response
HttpWebResponse _Response = (HttpWebResponse)_Request.GetResponse();
// Get Response
using (StreamReader _Reader = new StreamReader(_Response.GetResponseStream(), Encoding.UTF8))
{
_Content.Append(_Reader.ReadToEnd());
}
return _Content.ToString();
}
}
}
我无法发布实际参数,因为它们属于实时系统,但您能查看此代码并查看是否有任何遗漏?
谢谢!
答案 0 :(得分:2)
几个明显的问题:
WebClient
版本,而不是仅使用WebClient
。下面是一个WebClient
示例,它处理参数的URL编码,正确处理GET和POST等。。
public class WebSumitter
{
public string Submit(string URL, Dictionary<string, string> Parameters, MethodType Method)
{
// Prepare Parameters String
var values = new System.Collections.Specialized.NameValueCollection();
foreach (KeyValuePair<string, string> _Parameter in Parameters)
{
values.Add (_Parameter.Key, _Parameter.Value);
}
WebClient wc = new WebClient();
wc.Headers[HttpRequestHeader.UserAgent] = "Mozilla/4.0 (compatible; MSIE 6.0; Win32)";
if (Method == MethodType.GET)
{
UriBuilder _builder = new UriBuilder(URL);
if (values.Count > 0)
_builder.Query = ToQueryString (values);
string _stringResults = wc.DownloadString(_builder.Uri);
return _stringResults;
}
else if (Method == MethodType.POST)
{
byte[] _byteResults = wc.UploadValues (URL, "POST", values);
string _stringResults = Encoding.UTF8.GetString (_byteResults);
return _stringResults;
}
else
{
throw new NotSupportedException ("Unknown HTTP Method");
}
}
private string ToQueryString(System.Collections.Specialized.NameValueCollection nvc)
{
return "?" + string.Join("&", Array.ConvertAll(nvc.AllKeys,
key => string.Format("{0}={1}", System.Web.HttpUtility.UrlEncode(key), System.Web.HttpUtility.UrlEncode(nvc[key]))));
}
}
答案 1 :(得分:1)
使用Fiddler查看是否有任何响应实际通过网络线路返回。听起来服务器正在向您发送一个空的200 OK响应。