zoukankan      html  css  js  c++  java
  • post方法

     1 CookieContainer cookie = new CookieContainer();
     2 private string HttpPost(string Url, string postDataStr)
     3         {
     4             HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
     5             request.Method = "POST";
     6             request.ContentType = "application/x-www-form-urlencoded";
     7             request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
     8             request.CookieContainer = cookie;
     9             Stream myRequestStream = request.GetRequestStream();
    10             StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
    11             myStreamWriter.Write(postDataStr);
    12             myStreamWriter.Close();
    13  
    14             HttpWebResponse response = (HttpWebResponse)request.GetResponse();
    15  
    16             response.Cookies = cookie.GetCookies(response.ResponseUri);
    17             Stream myResponseStream = response.GetResponseStream();
    18             StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
    19             string retString = myStreamReader.ReadToEnd();
    20             myStreamReader.Close();
    21             myResponseStream.Close();
    22  
    23             return retString;
    24         }

    在post的时候有时也用的到cookie,像登录163发邮件时候就需要发送cookie,所以在外部一个cookie属性随时保存 CookieContainer cookie = new CookieContainer();

    !注意:有时候请求会重定向,但我们就需要从重定向url获取东西,像QQ登录成功后获取sid,但上面的会自动根据重定向地址跳转。我们可以用:
    request.AllowAutoRedirect = false;设置重定向禁用,你就可以从headers的Location属性中获取重定向地址

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  • 原文地址:https://www.cnblogs.com/Fadinglemon/p/3690449.html
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