Http连接操作帮助类

【实例截图】

【核心代码】

      /// <summary>
        /// 根据相传入的数据，得到相应页面数据
        /// </summary>
        /// <param name="item">参数类对象</param>
        /// <returns>返回HttpResult类型</returns>
        public HttpResult GetHtml(HttpItem item)
        {
            //返回参数
            HttpResult result = new HttpResult();
            try
            {
                //准备参数
                SetRequest(item);
            }
            catch (Exception ex)
            {
                return new HttpResult() { Cookie = string.Empty, Header = null, Html = 

ex.Message, StatusDescription = "配置参数时出错："   ex.Message };
            }
            try
            {
                #region 得到请求的response
                using (response = (HttpWebResponse)request.GetResponse())
                {
                    result.StatusCode = response.StatusCode;
                    result.StatusDescription = response.StatusDescription;
                    result.Header = response.Headers;
                    if (response.Cookies != null) result.CookieCollection = response.Cookies;
                    if (response.Headers["set-cookie"] != null) result.Cookie = 

response.Headers["set-cookie"];
                    byte[] ResponseByte = null;
                    using (MemoryStream _stream = new MemoryStream())
                    {
                        //GZIIP处理
                        if (response.ContentEncoding != null && response.ContentEncoding.Equals

("gzip", StringComparison.InvariantCultureIgnoreCase))
                        {
                            //开始读取流并设置编码方式
                            new GZipStream(response.GetResponseStream(), 

CompressionMode.Decompress).CopyTo(_stream, 10240);
                        }
                        else
                        {
                            //开始读取流并设置编码方式
                            response.GetResponseStream().CopyTo(_stream, 10240);
                        }
                        //获取Byte
                        ResponseByte = _stream.ToArray();
                    }
                    if (ResponseByte != null & ResponseByte.Length > 0)
                    {
                        //是否返回Byte类型数据
                        if (item.ResultType == ResultType.Byte) result.ResultByte = 

ResponseByte;
                        //从这里开始我们要无视编码了
                        if (encoding == null)
                        {
                            Match meta = Regex.Match(Encoding.Default.GetString(ResponseByte), 

"<meta([^<]*)charset=([^<]*)[\"']", RegexOptions.IgnoreCase);
                            string c = (meta.Groups.Count > 1) ? meta.Groups[2].Value.ToLower() 

: string.Empty;
                            if (c.Length > 2)
                                encoding = Encoding.GetEncoding(c.Trim().Replace("\"", 

"").Replace("'", "").Replace(";", "").Replace("iso-8859-1", "gbk"));
                            else
                            {
                                if (string.IsNullOrWhiteSpace(response.CharacterSet)) encoding = 

Encoding.UTF8;
                                else encoding = Encoding.GetEncoding(response.CharacterSet);
                            }
                        }
                        //得到返回的HTML
                        result.Html = encoding.GetString(ResponseByte);
                    }
                    else
                    {
                        //得到返回的HTML
                        result.Html = "本次请求并未返回任何数据";
                    }
                }
                #endregion
            }
            catch (WebException ex)
            {
                //这里是在发生异常时返回的错误信息
                response = (HttpWebResponse)ex.Response;
                result.Html = ex.Message;
                if (response != null)
                {
                    result.StatusCode = response.StatusCode;
                    result.StatusDescription = response.StatusDescription;
                }
            }
            catch (Exception ex)
            {
                result.Html = ex.Message;
            }
            if (item.IsToLower) result.Html = result.Html.ToLower();
            return result;
        }