• 在webBrowser中取Cookie的方法


    在很多情况下我们会使用间进程的webBrowser去实现一些网页的请求和抓去,这个时候有部分网页是取不到Cookie的,那怎么办呢?下面我提供一个方法,应该99%的都能取到,

    //取当前webBrowser登录后的Cookie值   
            [DllImport("wininet.dll", CharSet = CharSet.Auto, SetLastError = true)]
            static extern bool InternetGetCookieEx(string pchURL, string pchCookieName, StringBuilder pchCookieData, ref int pcchCookieData, int dwFlags, object lpReserved);
            //取出Cookie,当登录后才能取    
            private static string GetCookieString(string url)
            {
                // Determine the size of the cookie      
                int datasize = 256;
                StringBuilder cookieData = new StringBuilder(datasize);
                if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, null))
                {
                    if (datasize < 0)
                        return null;
                    // Allocate stringbuilder large enough to hold the cookie    
                    cookieData = new StringBuilder(datasize);
                    if (!InternetGetCookieEx(url, null, cookieData, ref datasize, 0x00002000, null))
                        return null;
                }
                return cookieData.ToString();
            }
    

      3.去掉所有的Html代码

    /// <summary>
            /// 过滤html标签
            /// </summary>
            /// <param name="strHtml">html的内容</param>
            /// <returns></returns>
            public static string StripHTML(string stringToStrip)
            {
                // paring using RegEx           //
                stringToStrip = Regex.Replace(stringToStrip, "</p(?:\s*)>(?:\s*)<p(?:\s*)>", "
    
    ", RegexOptions.IgnoreCase | RegexOptions.Compiled);
                stringToStrip = Regex.Replace(stringToStrip, "", "
    ", RegexOptions.IgnoreCase | RegexOptions.Compiled);
                stringToStrip = Regex.Replace(stringToStrip, """, "''", RegexOptions.IgnoreCase | RegexOptions.Compiled);
                stringToStrip = StripHtmlXmlTags(stringToStrip);
                return stringToStrip;
            }
            private static string StripHtmlXmlTags(string content)
            {
                return Regex.Replace(content, "<[^>]+>", "", RegexOptions.IgnoreCase | RegexOptions.Compiled);
            }
    

      4.设置URl格式的问题

    public static string URLDecode(string text)
           {
               return HttpUtility.UrlDecode(text, Encoding.Default);
           }
           public static string URLEncode(string text)
           {
               return HttpUtility.UrlEncode(text, Encoding.Default);
           }
    

      5.HttpHelper类使用方法

    HttpHelper http = new HttpHelper();
                HttpItem item = new HttpItem()
                {
                    URL = "http://www.sufeinet.com",//URL     必需项
                    Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                    //Encoding = Encoding.Default,
                    Method = "get",//URL     可选项 默认为Get
                    Timeout = 100000,//连接超时时间     可选项默认为100000
                    ReadWriteTimeout = 30000,//写入Post数据超时时间     可选项默认为30000
                    IsToLower = false,//得到的HTML代码是否转成小写     可选项默认转小写
                    Cookie = "",//字符串Cookie     可选项
                    UserAgent = "Mozilla/5.0 (compatible; MSIE 9.0; Windows NT 6.1; Trident/5.0)",//用户的浏览器类型,版本,操作系统     可选项有默认值
                    Accept = "text/html, application/xhtml+xml, */*",//    可选项有默认值
                    ContentType = "text/html",//返回类型    可选项有默认值
                    Referer = "http://www.sufeinet.com",//来源URL     可选项
                    Allowautoredirect = true,//是否根据301跳转     可选项
                    CerPath = "d:\123.cer",//证书绝对路径     可选项不需要证书时可以不写这个参数
                    Connectionlimit = 1024,//最大连接数     可选项 默认为1024
                    Postdata = "C:\PERKYSU_20121129150608_ScrubLog.txt",//Post数据     可选项GET时不需要写
                    PostDataType = PostDataType.FilePath,//默认为传入String类型,也可以设置PostDataType.Byte传入Byte类型数据
                    ProxyIp = "192.168.1.105:8015",//代理服务器ID 端口可以直接加到后面以:分开就行了    可选项 不需要代理 时可以不设置这三个参数
                    ProxyPwd = "123456",//代理服务器密码     可选项
                    ProxyUserName = "administrator",//代理服务器账户名     可选项
                    ResultType = ResultType.Byte,//返回数据类型,是Byte还是String
                    PostdataByte = System.Text.Encoding.Default.GetBytes("测试一下"),//如果PostDataType为Byte时要设置本属性的值
                    CookieCollection = new System.Net.CookieCollection(),//可以直接传一个Cookie集合进来
                };
                item.Header.Add("测试Key1", "测试Value1");
                item.Header.Add("测试Key2", "测试Value2");
                //得到HTML代码
                HttpResult result = http.GetHtml(item);
                //取出返回的Cookie
                string cookie = result.Cookie;
                //返回的Html内容
                string html = result.Html;
                if (result.StatusCode == System.Net.HttpStatusCode.OK)
                {
                    //表示访问成功,具体的大家就参考HttpStatusCode类
                }
                //表示StatusCode的文字说明与描述
                string statusCodeDescription = result.StatusDescription;
                //把得到的Byte转成图片
                Image img = byteArrayToImage(result.ResultByte);
            }
            /// <summary>
            /// 字节数组生成图片
            /// </summary>
            /// <param name="Bytes">字节数组</param>
            /// <returns>图片</returns>
       private Image byteArrayToImage(byte[] Bytes)
            {
                    MemoryStream ms = new MemoryStream(Bytes);
                    Image outputImg = Image.FromStream(ms);
                    return outputImg;
            }}
    

      6.最简单的Post与Get的写法

    HttpHelper http = new HttpHelper();
               HttpItem item = new HttpItem()
               {
                   URL = "http://www.sufeinet.com",//URL这里都是测试     必需项
                   Method = "get",//URL     可选项 默认为Get
               };
               //得到HTML代码
               HttpResult result = http.GetHtml(item);
               item = new HttpItem()
              {
                  URL = "http://tool.sufeinet.com",//URL这里都是测试URl   必需项
                  Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                  //Encoding = Encoding.Default,
                  Method = "post",//URL     可选项 默认为Get
                  Postdata = "user=123123&pwd=1231313"
              };
               //得到新的HTML代码
               result = http.GetHtml(item);
    

      7.HttpHelper设置Header参考的方法

    HttpHelper http = new HttpHelper();
              HttpItem item = new HttpItem()
              {
                  URL = "http://www.sufeinet.com",//URL     必需项
                  Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                   //Encoding = Encoding.Default,
                  Method = "get",//URL     可选项 默认为Get
              };
              item.Header.Add("测试Key1", "测试Value1");
              item.Header.Add("测试Key2", "测试Value2");
              //得到HTML代码
              HttpResult result = http.GetHtml(item);
              //取出返回的Cookie
              string cookie = result.Cookie;
              //返回的Html内容
              string html = result.Html;
              if (result.StatusCode == System.Net.HttpStatusCode.OK)
              {
                  //表示访问成功,具体的大家就参考HttpStatusCode类
              }
              //表示StatusCode的文字说明与描述
              string statusCodeDescription = result.StatusDescription;
    

      8.HttpHelper获取图片的方式

    HttpHelper http = new HttpHelper();
              HttpItem item = new HttpItem()
              {
                  URL = "http://www.sufeinet.com",//URL     必需项
                  Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                  //Encoding = Encoding.Default,
                  ResultType = ResultType.Byte
              };
              //得到HTML代码
              HttpResult result = http.GetHtml(item);
              if (result.StatusCode == System.Net.HttpStatusCode.OK)
              {
                  //表示访问成功,具体的大家就参考HttpStatusCode类
              }
              //表示StatusCode的文字说明与描述
              string statusCodeDescription = result.StatusDescription;
              //把得到的Byte转成图片
              Image img = byteArrayToImage(result.ResultByte);
          }
     
          /// <summary>
          /// 字节数组生成图片
          /// </summary>
          /// <param name="Bytes">字节数组</param>
          /// <returns>图片</returns>
          private Image byteArrayToImage(byte[] Bytes)
          {
                  MemoryStream ms = new MemoryStream(Bytes);
                  Image outputImg = Image.FromStream(ms);
                  return outputImg;
          }
    

      二次或多次使用Cookie的方式

    HttpHelper http = new HttpHelper();
              HttpItem item = new HttpItem()
              {
                  URL = "http://www.sufeinet.com",//URL这里都是测试     必需项
                  Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                  //Encoding = Encoding.Default,
                  Method = "get",//URL     可选项 默认为Get
              };
              //得到HTML代码
              HttpResult result = http.GetHtml(item);
              item = new HttpItem()
             {
                 URL = "http://tool.sufeinet.com",//URL这里都是测试URl   必需项
                 Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                 //Encoding = Encoding.Default,
                 Method = "get",//URL     可选项 默认为Get
                 Cookie = result.Cookie,
             };
              //得到新的HTML代码
              result = http.GetHtml(item);
    

      CookieCollection类型的Cookie使用方法

    HttpHelper http = new HttpHelper();
               HttpItem item = new HttpItem()
               {
                   URL = "http://www.sufeinet.com",//URL这里都是测试     必需项
                   Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                   //Encoding = Encoding.Default,
                   Method = "get",//URL     可选项 默认为Get
                   ResultCookieType = ResultCookieType.CookieCollection
               };
               //得到HTML代码
               HttpResult result = http.GetHtml(item);
               item = new HttpItem()
               {
                   URL = "http://tool.sufeinet.com",//URL这里都是测试URl   必需项
                   Encoding = null,//编码格式(utf-8,gb2312,gbk)     可选项 默认类会自动识别
                   //Encoding = Encoding.Default,
                   Method = "get",//URL     可选项 默认为Get
                   CookieCollection = result.CookieCollection,
                   ResultCookieType = ResultCookieType.CookieCollection
               };
               //得到新的HTML代码
               result = http.GetHtml(item);
    

      

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  • 原文地址:https://www.cnblogs.com/microtiger/p/7839334.html
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