[英]How to shim HttpWebRequest Headers?
我正在尝试填充以下代码:
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(uri);
request.Method = "GET";
request.Headers.Add("Authorization", "Bearer " + authToken.token.access_token);
request.Accept = "application/json";
但是运行单元测试会在这部分抛出异常: request.Headers.Add()
因为request.Headers
是null
。 尽管在我的测试中初始化了Headers
,但仍然如此:
ShimHttpWebRequest request = new ShimHttpWebRequest();
ShimWebRequest.CreateString = (urio) => {
request.Instance.Headers = new WebHeaderCollection {
{"Authorization", "Bearer abcd1234"}
};
//also tried initilizing it like this:
//WebHeaderCollection headers = new WebHeaderCollection();
//headers[HttpRequestHeader.Authorization] = "Bearer abcd1234";
//request.Instance.Headers = headers;
return request.Instance;
};
但是request.Instance.Headers
仍然是null
。
我错过了什么?
我通过为Headers
创建一个 getter 来解决这个问题,以便它返回一个WebHeaderCollection
而不是null
。
ShimHttpWebRequest request = new ShimHttpWebRequest();
ShimWebRequest.CreateString = (urio) => request.Instance;
request.HeadersGet = () => {
WebHeaderCollection headers = new WebHeaderCollection();
headers.Add("Authorization", "Bearer abcd1234");
return headers;
};
我通过如下实例化ShimHttpWebRequest
Header 属性解决了这个问题,
var httpWebRequest = new ShimHttpWebRequest() { HeadersGet = () => new WebHeaderCollection() };
ShimWebRequest.CreateString = (arg1) => httpWebRequest.Instance;
这是我的代码,你可以试试:
public static string HttpPostWebRequest(string requestUrl, int timeout, string requestXML, bool isPost, string encoding, out string msg)
{
msg = string.Empty;
string result = string.Empty;
try
{
byte[] bytes = System.Text.Encoding.GetEncoding(encoding).GetBytes(requestXML);
HttpWebRequest request = (HttpWebRequest)WebRequest.Create(requestUrl);
request.ContentType = "application/x-www-form-urlencoded";
request.Referer = requestUrl;
request.Method = isPost ? "POST" : "GET";
request.ContentLength = bytes.Length;
request.Timeout = timeout * 1000;
using (Stream requestStream = request.GetRequestStream())
{
requestStream.Write(bytes, 0, bytes.Length);
requestStream.Close();
}
HttpWebResponse response = (HttpWebResponse)request.GetResponse();
Stream responseStream = response.GetResponseStream();
if (responseStream != null)
{
StreamReader reader = new StreamReader(responseStream, System.Text.Encoding.GetEncoding(encoding));
result = reader.ReadToEnd();
reader.Close();
responseStream.Close();
request.Abort();
response.Close();
return result.Trim();
}
}
catch (Exception ex)
{
msg = ex.Message + ex.StackTrace;
}
return result;
}
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