/// <summary>
/// 通过get方式发送xmlHttp请求,并获得响应数据
/// </summary>
/// <param name="Url">URL地址,参数直接写到后面,如:http://www.baidu.com/index.asp?id=7</param>
/// <param name="Encoding">请求和返回数据采用的编码方式,如 "gb2312" ,"utf-8"</param>
/// <returns></returns>
public static string SendXmlHttpWithGet(string Url, string Encoding, CookieContainer cookie)
{HttpWebRequest request;// = (HttpWebRequest)WebRequest.Create(Url);string ResponseHtml = "";try{request = (HttpWebRequest)WebRequest.Create(Url);request.CookieContainer = cookie;request.KeepAlive = false; //是否建立持久连接request.Timeout = 6000; //超时时间request.Method = "get"; //get方式提交request.ContentType = "application/x-www-form-urlencoded;charset=" + Encoding;request.AllowAutoRedirect = true; //是否跟随重定向request.MaximumAutomaticRedirections = 10; //重定向最大数request.AllowWriteStreamBuffering = false; //是否对发送数据进行缓冲处理request.AuthenticationLevel = System.Net.Security.AuthenticationLevel.MutualAuthRequested; //进行身份验证
HttpWebResponse response = (HttpWebResponse)request.GetResponse(); //获得响应Stream responseStream = response.GetResponseStream(); //获得响应流StreamReader readStream = new StreamReader(responseStream, System.Text.Encoding.GetEncoding(Encoding)); //读取字节的方式读取流
ResponseHtml = readStream.ReadToEnd(); //读完流responseStream.Close(); //关闭响应流readStream.Close();//关闭字节流
    }catch (Exception ex){ResponseHtml = "<?xml version=\"1.0\" encoding=\"utf-8\" ?><data><success value=\"0\" msg=\"登录失败！" + ex.Message.ToString() + "\" /></data>";}finally { }return ResponseHtml;
}/// <summary>
/// 通过post方式发送xmlHttp请求,并获得响应数据
/// </summary>
/// <param name="url">URL地址</param>
/// <param name="parms">需要处理的参数键值对</param>
/// <param name="encoding">请求和返回数据采用的编码方式,如 "gb2312" ,"utf-8"</param>
/// <returns></returns>
public static string SendXmlHttpWithPost(string url, Hashtable parms, string encoding, CookieContainer cookie)
{HttpWebRequest request ;//= (HttpWebRequest)WebRequest.Create(url);string ResponseHtml = "";try{request = (HttpWebRequest)WebRequest.Create(url);request.CookieContainer = cookie;////传参数if (encoding == null) { encoding = "utf-8"; }Encoding myEncoding = Encoding.GetEncoding(encoding); //指定编码string parmsStr = "";if (parms != null){foreach (DictionaryEntry item in parms){parmsStr += "&" + HttpUtility.UrlEncode(item.Key.ToString(), myEncoding);parmsStr += "=" + HttpUtility.UrlEncode(item.Value.ToString(), myEncoding);}if (parmsStr.Length > 0){parmsStr = parmsStr.Substring(1, parmsStr.Length - 1); //把第一个"&"删了
            }}byte[] postBytes = myEncoding.GetBytes(parmsStr);request.Timeout = 60000; //超时时间request.Method = "post"; //采用post方法提交request.ContentType = "application/x-www-form-urlencoded;charset=" + myEncoding;request.ContentLength = postBytes.Length;Stream requestStream = request.GetRequestStream();requestStream.Write(postBytes, 0, postBytes.Length); //把参数写入请求流
        requestStream.Close();//获取响应HttpWebResponse response = (HttpWebResponse)request.GetResponse();//获取响应Stream responseStream = response.GetResponseStream();//获取响应流StreamReader readStream = new StreamReader(responseStream, Encoding.GetEncoding("utf-8")); //采用StreamReader用指定编码读取响应流
ResponseHtml = readStream.ReadToEnd(); //读完流responseStream.Close(); //关闭响应流readStream.Close();//关闭字节流
    }catch (Exception ex) {ResponseHtml= "<?xml version=\"1.0\" encoding=\"utf-8\" ?><data><success value=\"0\" msg=\"登录失败！" + ex.Message.ToString() + "\" /></data>";}return ResponseHtml;