最近在做的一个项目其中的一部分是与远程服务器进行交互，确定身份验证的合法性，于是编写了SendRequest方法
此方法发送给远程服务器XML请求，服务器经过处理后，返回XML回应，由此方法接收到后进行返回。
1 protected string SendRequest(string strXML) { 2 string str = ""; //双方协定的XML格式 3 Encoding encoding = Encoding.UTF8; //接收页面 4 string strUrl = "http://localhost:14360/WebSite16/Handler.ashx"; 5 byte[] data = encoding.GetBytes(strXML); //准备请求... 6 HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(strUrl); 7 myRequest.Method = "POST"; 8 myRequest.ContentType = "text/xml;charset=utf-8"; 9 myRequest.ContentLength = data.Length; //身份认证，特别注意，参数用户名，密码 10 NetworkCredential cred = new NetworkCredential("wcadmin", "wcadmin"); 11 myRequest.Credentials = cred; //在信息请求头部加入验证信息，不然验证不通过 12 myRequest.PreAuthenticate = true; 13 Stream newStream = myRequest.GetRequestStream(); //发送数据 14 newStream.Write(data, 0, data.Length); 15 newStream.Close(); 16 WebResponse response = myRequest.GetResponse(); 17 Stream resStream = response.GetResponseStream(); 18 StreamReader sr = new StreamReader(resStream, System.Text.Encoding.UTF8); 19 str = sr.ReadToEnd();//接收返回值，返回值可以是xml 20 resStream.Close(); 21 sr.Close(); 22 return str; 23 }
解析返回的XML的方法如下代码片段：
1 public bool CheckUser(string token) { 2 bool flag = false; //验证成功与否的标识 3 //向服务器发出验证XML信息 4 string requestXML = ""; 5 requestXML = "<?xml version="1.0" encoding="UTF-8"?><ecity><msgname>XXXXXX</msgname><msgversion>1.0.0</msgversion><transactionid>000000</transactionid><timestamp>" 6 + DateTime.Now.ToString("yyyyMMddhhmmss") + "</timestamp><msgsender>abc</msgsender><svccont><token>"+token+"</token></svccont></ecity>"; 7 8 //发送验证的XML并获取返回的XML信息 9 string responseXML = ""; 10 responseXML= SendRequest(requestXML); 11 12 //解析XML信息 13 XmlDocument xmlDoc = new XmlDocument(); 14 xmlDoc.LoadXml(responseXML); 15 XmlNodeList nodes = xmlDoc.SelectNodes("/ecity/msgname"); 16 if (nodes.Count > 0) 17 { 18 //首先判断是否接口正确 19 if (nodes[0].InnerText.Trim().ToLower() == "getuserinforesp") 20 { 21 nodes = xmlDoc.SelectNodes("/ecity/result/rspcode"); 22 if (nodes.Count > 0) 23 { 24 //表示验证通过 25 if (nodes[0].InnerText.Trim() == "0") 26 { 27 flag = true; 28 } 29 } 30 } 31 } 32 33 return flag; 34 }
转自：http://www.cnblogs.com/shunyao8210/archive/2011/09/19/2181075.html