根据URL请求 返回XML字符串

public static string GetHttpResponse(string url)

{

string content = "";

// Create a new HttpWebRequest object.Make sure that

// a default proxy is set if you are behind a fure wall.

//其中,HttpWebRequest实例不使用HttpWebRequest的构造函数来创建,二是使用WebRequest的Create方法来创建.

HttpWebRequest myHttpWebRequest1 = (HttpWebRequest)WebRequest.Create(url);

//myHttpWebRequest1.Method = "POST";

//myHttpWebRequest1.ContentType = "application/x-www-form-urlencoded";

////不维持与服务器的请求状态

myHttpWebRequest1.KeepAlive = true;

//myHttpWebRequest1.AllowAutoRedirect = false;

//创建一个HttpWebRequest对象

//Assign the response object of HttpWebRequest to a HttpWebResponse variable.\

HttpWebResponse myHttpWebResponse1;

try

{

myHttpWebResponse1 = (HttpWebResponse)myHttpWebRequest1.GetResponse();

//设置页面的编码模式

//System.Text.Encoding utf8 = System.Text.Encoding.gb;

//System.Text.Encoding.GetEncoding("GB2312").GetString(System.Text.Encoding.UTF8.GetBytes("你的xml字符串"));

Stream streamResponse = myHttpWebResponse1.GetResponseStream();

StreamReader streamRead = new StreamReader(streamResponse, System.Text.Encoding.GetEncoding("GB2312"));

Char[] readBuff = new Char[256];

//这里使用了StreamReader的Read()方法,参数意指从0开始读取256个char到readByff中.

//Read()方法返回值为指定的字符串数组,当达到文件或流的末尾使,方法返回0

int count = streamRead.Read(readBuff, 0, 256);

while (count > 0)

{

String outputData = new String(readBuff, 0, count);

content += outputData;

count = streamRead.Read(readBuff, 0, 256);

}

myHttpWebResponse1.Close();

return content;

}

catch (WebException ex)

{

content = "在请求URL为：" + url.ToString() + " 的页面时产生错误，错误信息为" + ex.ToString();

return content;

}

}

public static IdentlyInfo CredentialsInfo(string identity, string userName)

{

IdentlyInfo identlyInfo = new IdentlyInfo();

string retStr = "";

string url = "http://172.168.254.34:9090/NCIIS/PersonInfoServlet?id=" + identity + "&name=" + userName + "";

//  strResult = "<?xml version=\"1.0\" encoding=\"UTF-8\"?><data><status></status><id>身份证号码</id><name>姓名</name><photo>http://b.hiphotos.baidu.com/image/pic/item/f11f3a292df5e0fef825890b5e6034a85edf72fe.jpg</photo></data>";

string strResult = GetHttpResponse(url);

int start, end;

string statusCode = "<status>";

// string strorderstate = null;

start = strResult.LastIndexOf(statusCode) + statusCode.Length;

int starts = strResult.IndexOf("</status>");

if (start != -1)

{

identlyInfo.status = strResult.Substring(start, starts - start);

}

string id = "<id>";

//string strid = null;

start = strResult.LastIndexOf(id) + id.Length;

starts = strResult.IndexOf("</id>");

if (start != -1)

{

identlyInfo.id = strResult.Substring(start, starts - start);

}

string name = "<name>";

//string strname = null;

start = strResult.LastIndexOf(name) + name.Length;

starts = strResult.IndexOf("</name>");

if (start != -1)

{

identlyInfo.name = strResult.Substring(start, starts - start);

}

string photo = "<photo>";

//string strphoto = null;

start = strResult.LastIndexOf(photo) + photo.Length;

starts = strResult.IndexOf("</photo>");

if (start != -1)

{

identlyInfo.photo = strResult.Substring(start, starts - start);

}

if (identlyInfo.status != "00")

{

retStr = "身份证和姓名不匹配！";

}

else

{

retStr = identlyInfo.photo;

}

return identlyInfo;

}