微信简单Demo

public class WxHandler : IHttpHandler
{
public static string Msg;
public void ProcessRequest(HttpContext context)
{
context.Response.ContentType = "text/plain";
if (context.Request.HttpMethod.ToLower().Equals("get"))
{
context.Response.Write(Msg);
//校验
VaildateUrl();
}
else
{
//接受并相应
HandleMsg();
}
}

private void HandleMsg()
{
HttpContext context = HttpContext.Current;
Stream xmlStream = context.Request.InputStream;
XmlDocument doc = new XmlDocument();
doc.Load(xmlStream);
XmlElement rootElement = doc.DocumentElement;
string toUserName = rootElement.SelectSingleNode("ToUserName").InnerText;
string fromUserName = rootElement.SelectSingleNode("FromUserName").InnerText;
string msgType = rootElement.SelectSingleNode("MsgType").InnerText;
string content = rootElement.SelectSingleNode("Content").InnerText;
//Msg = string.Format("{0}--{1}--{2}---{3}",toUserName,fromUserName,msgType,content);
string xmlMsg = "<xml>" +
"<ToUserName><![CDATA[" + fromUserName + "]]></ToUserName>" +
"<FromUserName><![CDATA[" + toUserName + "]]></FromUserName>" +
"<CreateTime>" + GetCreateTime() + "</CreateTime>" +
"<MsgType><![CDATA[text]]></MsgType>" +
"<Content><![CDATA[亲爱的你给我说的是:" + content + "，你说这是什么意思呢？]]></Content></xml>";
Msg = xmlMsg;
context.Response.Write(xmlMsg);
}
private int GetCreateTime()
{
DateTime dateStart = new DateTime(1970, 1, 1, 8, 0, 0);
return (int)(DateTime.Now - dateStart).TotalSeconds;
}
private void VaildateUrl()
{
HttpContext context = HttpContext.Current;
string signature = context.Request["signature"];
string timestamp = context.Request["timestamp"];
string nonce = context.Request["nonce"];
string echostr = context.Request["echostr"];
string token = "huang";
string[] temp1 = { token, timestamp, nonce };
Array.Sort(temp1);
string temp2 = string.Join("", temp1);
string temp3 = FormsAuthentication.HashPasswordForStoringInConfigFile(temp2, "SHA1");
if (temp3.ToLower().Equals(signature))
{
context.Response.Write(echostr);
}
else
{
context.Response.Write("浏览器打开方式!！");
}

}

public bool IsReusable
{
get
{
return false;
}
}
}