C#中關於Send WebRequest 方法和資料處理

很久不更新部落格了，這次大概說一下C#中的Send WebRequest，眾所周知，.NET網路編程在測試中是非常常見的，具體來說，比如我們如果測試一個API，通過Send WebRequest的方式來進行API層面的功能測試，然後用Selenium完成前端的驗證，這種模式應該說是比較方便而通用的，具體以其中最常見的HTTP request為例，當我們需要傳輸資料時，需要
1）地址：Address作為Webrequest參數執行個體化，然後設定相應屬性，比如Method（Get還是Post等等）
2）資料：Data作為HttpRequest的資料流寫入：

XmlResponse = null;
ResponseCode = HttpStatusCode.Unused;
ServerResponse = String.Empty;

參數處理部分
//Format the data
string output = data.Aggregate(String.Empty, (current, keyValuePair) => current + ("&" + keyValuePair.Key + "=" + HttpUtility.UrlEncode(keyValuePair.Value)));
var encoding = new UTF8Encoding();
//設定PostData變數將output進行處理，最終得到byte[] d作為最終資料寫入到WebRequest中
var Postdata = Encoding.ASCII.GetBytes(output);
byte[] d = encoding.GetBytes(output.Substring(1, output.Length - 1));

var address = TargetUrl;
//GET部分的資料處理
if (method.ToUpperInvariant() == "GET")
address=address+output;

//POST部分的資料處理
WebRequest request = WebRequest.Create(address) as HttpWebRequest;
//Add post process
if (request == null)
throw new Exception("WebRequest object is null.");

request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = d.Length;

ServerResponse = String.Empty;

//資料讀取及處理部分
using (Stream dataStream = request.GetRequestStream())
{
dataStream.Write(d, 0, d.Length);
dataStream.Close();

using (var response = (HttpWebResponse)request.GetResponse())
{
ResponseCode = response.StatusCode;
using (Stream myStream = response.GetResponseStream())
{
if (myStream != null)
{
var readStream = new StreamReader(myStream, Encoding.UTF8);
ServerResponse = readStream.ReadToEnd();
}
}
response.Close();
}
}


if (ResponseCode == HttpStatusCode.OK)
{
if (loadXml)
LoadXml();
return true;
}

return false;

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