zoukankan      html  css  js  c++  java
  • C#模拟http 发送post或get请求

    1
    2
    3
    4
    5
    6
    7
    8
    9
    10
    11
    12
    13
    14
    15
    16
    17
    18
    19
    20
    21
    22
    23
    24
    25
    26
    27
    28
    29
    30
    31
    32
    33
    34
    35
    36
    37
    38
    39
    private string HttpPost(string Url, string postDataStr)
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url);
                request.Method = "POST";
                request.ContentType = "application/x-www-form-urlencoded";
                request.ContentLength = Encoding.UTF8.GetByteCount(postDataStr);
                request.CookieContainer = cookie;
                Stream myRequestStream = request.GetRequestStream();
                StreamWriter myStreamWriter = new StreamWriter(myRequestStream, Encoding.GetEncoding("gb2312"));
                myStreamWriter.Write(postDataStr);
                myStreamWriter.Close();
     
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
     
                response.Cookies = cookie.GetCookies(response.ResponseUri);
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
     
                return retString;
            }
     
            public string HttpGet(string Url, string postDataStr)
            {
                HttpWebRequest request = (HttpWebRequest)WebRequest.Create(Url + (postDataStr == "" "" "?") + postDataStr);
                request.Method = "GET";
                request.ContentType = "text/html;charset=UTF-8";
     
                HttpWebResponse response = (HttpWebResponse)request.GetResponse();
                Stream myResponseStream = response.GetResponseStream();
                StreamReader myStreamReader = new StreamReader(myResponseStream, Encoding.GetEncoding("utf-8"));
                string retString = myStreamReader.ReadToEnd();
                myStreamReader.Close();
                myResponseStream.Close();
     
                return retString;
            }

      

    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

  • 相关阅读:
    AdminLTE 3.0发布了
    .NET Core ORM 类库Petapoco中对分页Page添加Order By对查询的影响
    【译】ASP.NET Core在 .NET Core 3.1 Preview 1中的更新
    物品编码中心所说的包装指示符
    Entity Framework Core生成的存储过程在MySQL中需要进行处理及PMC中的常用命令
    Asp.Net Core Mvc Razor之RazorPage
    基于Asp.Net Core MVC和AdminLTE的响应式管理后台之侧边栏处理
    Qt的下载地址
    由于MicrosoftVisualStudio14.0DesignerShadowCache导致的一个异常问题
    Spring系列.事务管理原理简析
  • 原文地址:https://www.cnblogs.com/wangluochong/p/4577177.html
Copyright © 2011-2022 走看看