[英]missing post data by using HttpWebRequest
我在使用HttpWebRequest發布數據時遇到了問題。
有一個字符串(即key1=value1&key2=value2&key3=value3
),我已將其發布到一個網站(即www。*。com / edit),但是,我不知道為什么有時它沒有錯,但是有時,第一個key=value1
將丟失,只有key2=value&key3=value3
可以在HttpAnalyzer
找到。
public static string SubmitData(string Url, string FormData, CookieContainer _Cc, string ContentType)
{
Stream RequestStream = null, ResponseStream = null; StreamReader Sr = null;
HttpWebRequest HRequest = (HttpWebRequest)WebRequest.Create(Url);
try
{
HRequest.CookieContainer = _Cc;
HRequest.Method = "POST";
HRequest.UserAgent = "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0)";
HRequest.ContentType = ContentType;
HRequest.ContentLength = FormData.Length;
//byte[] BFromData = new ASCIIEncoding().GetBytes(FormData);
byte[] BFromData = Encoding.ASCII.GetBytes(FormData);
BFromData = Encoding.Convert(Encoding.ASCII, Encoding.UTF8, BFromData);//ascii → utf8
RequestStream = HRequest.GetRequestStream();
RequestStream.Write(BFromData, 0, BFromData.Length);
//RequestStream.Write(utf8Bytes,0,utf8Bytes.Length );
HttpWebResponse HResponse = (HttpWebResponse)HRequest.GetResponse();
ResponseStream = HResponse.GetResponseStream();
Sr = new StreamReader(ResponseStream, Encoding.UTF8);
return Sr.ReadToEnd();
}
catch
{
return "";
}
finally
{
if (null != RequestStream) RequestStream.Close();
if (null != ResponseStream) ResponseStream.Close();
if (null != Sr) Sr.Close();
}
}
使用Fiddler查看單擊表單時請求的樣子,然后嘗試使用此方法並修改您的請求所需的內容。
public static void PostDataAndDoSomething()
{
string URI = "http://www.something.com";
//make your request payload
string requestBody = String.Format("{{'param1': {0}, 'param2': {1}}}",value1, value2); //json format
HttpWebRequest request = (HttpWebRequest)HttpWebRequest.Create(URI); //make request
// set request headers as you need
request.ContentType = "application/json; charset=UTF-8";
request.Accept = "application/json, text/javascript;
request.Method = "POST";
request.UserAgent = "";
request.Headers.Add("X-Requested-With", "XMLHttpRequest");
using (StreamWriter writer = new StreamWriter(request.GetRequestStream()))
{
writer.Write(requestBody); //write your request payload
}
WebResponse response = request.GetResponse();
string jsonData = String.Empty;
using (var reader = new StreamReader(response.GetResponseStream()))
{
jsonData = reader.ReadToEnd();
}
response.Close();
//do something with your data, deserialize, Regex etc....
}
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