获取远程网页的内容之二（downmoon原创）

private    string strFireWallIP 
        ...{ 
            get 
            ...{ 
                return System.Configuration.ConfigurationSettings.AppSettings["strFireWallIP"]; 
            } 
        } 
        private    string strFireWallPort 
        ...{ 
            get 
            ...{ 
                return System.Configuration.ConfigurationSettings.AppSettings["strFireWallPort"]; 
            } 
        } 
        private    string strUID 
        ...{ 
            get 
            ...{ 
                return System.Configuration.ConfigurationSettings.AppSettings["strUID"]; 
            } 
        } 
        private    string strPWD 
        ...{ 
            get 
            ...{ 
                return System.Configuration.ConfigurationSettings.AppSettings["strPWD"]; 
            } 
        } 
        private    string strDomain 
        ...{ 
            get 
            ...{ 
                return System.Configuration.ConfigurationSettings.AppSettings["strDomain"]; 
            } 
        } 
        #endregion 

/**//// <summary> 
        /// 获取指定远程网页内容 
        /// </summary> 
        /// <param name="strUrl">所要查找的远程网页地址</param> 
        /// <returns></returns> 
        //[WebMethod(Description = "获取指定远程网页内容。")] 
        public string getPageContent(string strUrl) 
        ...{ 
            string strResult        =    ""; 
            this.CurrentUrl    =     strUrl; 
            if(this.CurrentUrl.ToLower().StartsWith("http://")==false) 
                this.CurrentUrl = "http://"+this.CurrentUrl; 
            try 
            ...{ 
                contentBytes    = GetHtmlByte(CurrentUrl); 

            } 
            catch(Exception err) 
            ...{ 
                strResult = "请求错误：" + err.Message; 
            } 
            if(contentBytes==null) 
            ...{ 
                throw new Exception("没有获得返回值"); 
            } 
            strResult        =    getStringFromByteArray(contentBytes,Encoding.UTF8); 
            return strResult; 
        } 

  /**//// <summary> 
        /// 获取指定远程网页元素字节数组 
        /// </summary> 
        /// <param name="strUrl">所要查找的远程网页地址</param> 
        /// <returns></returns> 
        private byte[] GetHtmlByte(string strUrl) 
        ...{ 
            string strPara=(strUrl.IndexOf("?")>=0?strUrl.Substring(strUrl.IndexOf("?")+1):""); 
            System.Text.Encoding encoding    =    new UTF8Encoding(); 
            byte[]  byte1                    =    encoding.GetBytes(strPara); 
            byte[]    byteReturn                =    new byte[10000000]; 
            if(strUrl.Trim().ToLower().StartsWith("http://")==false) 
            ...{ 
                strUrl = "http://"+strUrl; 
            } 
            HttpWebRequest myHttpWebRequest        =    (HttpWebRequest)WebRequest.Create(strUrl); 
            myHttpWebRequest.AllowAutoRedirect    =    true;        
            myHttpWebRequest.KeepAlive            =    true; 
            myHttpWebRequest.UserAgent            =    "Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0; .NET CLR 1.1.4322)"; 
            System.Net .WebProxy  proxy = new WebProxy(strFireWallIP+":"+strFireWallPort,true); 
            //proxy=(WebProxy)System.Net.GlobalProxySelection.Select; 
            System.Net.NetworkCredential myCredential = new NetworkCredential(strUID,strPWD,strDomain); 
            proxy.Credentials =myCredential; 
            myHttpWebRequest.Proxy = proxy; 


            HttpWebResponse myHttpWebResponse    =    (HttpWebResponse)myHttpWebRequest.GetResponse(); 
            byte[] bRead    =    new byte[1024]; 
            int lngCount    =    1; 
            int totalLen    =    0; 
            Stream recWeb    =    myHttpWebResponse.GetResponseStream();    
            lngCount        =    recWeb.Read(bRead,0,1024); 
            while(lngCount>0) 
            ...{ 
                Array.Copy(bRead,0,byteReturn,totalLen,lngCount); 
                totalLen    +=    lngCount; 
                lngCount    =    recWeb.Read(bRead,0,1024); 
            } 
            recWeb.Close(); 
            byte[] byteGets =    new byte[totalLen]; 
            Array.Copy(byteReturn,0,byteGets,0,totalLen); 
            byteReturn        =    null; 
            bRead            =    null; 

            return byteGets; 
        } 
        #endregion 

 /**//// <summary> 
        /// 转换指定字节数组为字符串 
        /// </summary> 
        /// <param name="ByteGet">字节数组Byte[]</param> 
        /// <param name="myEncoding">编码方式</param> 
        /// <returns></returns> 
        private static string getStringFromByteArray(Byte[] ByteGet,Encoding myEncoding) 
        ...{ 
            int i,lngCount; 
            StringBuilder aTemp = new StringBuilder(10000); 
            lngCount = ByteGet.Length; 
            for(i = 0;i<lngCount;i+= 10000) 
            ...{ 
                aTemp.Append(myEncoding.GetString(ByteGet,i,(lngCount>=i+10000?10000:lngCount - i))); 
            } 
            if(i<=lngCount) 
            ...{ 
                aTemp.Append(myEncoding.GetString(ByteGet,i,(lngCount - i))); 
            } 
            return aTemp.ToString(); 
        } 

        #endregion