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(, , , , , );

            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;

            }

        }

    }