<%@ WebHandler Language="C#" Class="Handler" %>

using System;

using System.Collections.Generic;

using System.Web;

using System.IO;

using System.Text;

using System.Web.Security;

using System.Xml;

public class Handler : IHttpHandler

{

    public void ProcessRequest(HttpContext param_context)

    {

        string postString = string.Empty;

        if (HttpContext.Current.Request.HttpMethod.ToUpper() == "POST")

        {

            using (Stream stream = HttpContext.Current.Request.InputStream)

            {

                Byte[] postBytes = new Byte[stream.Length];

                stream.Read(postBytes, , (Int32)stream.Length);

                postString = Encoding.Default.GetString(postBytes);

            }

            if (!string.IsNullOrEmpty(postString))

            {

                Handle(postString);

            }

        }

        else

        {

            InterfaceTest();

        }

    }

    public bool IsReusable

    {

        get

        {

            return false;

        }

    }

    //写入日志

    public void WriteLog(string text)

    {

        StreamWriter sw = new StreamWriter(HttpContext.Current.Server.MapPath(".") + "\\log.txt", true);

        sw.WriteLine(text);

        sw.Close();//写入

    }

    /// <summary>

    /// 处理信息并应答

    /// </summary>

    private void Handle(string postStr)

    {

        WriteLog(postStr);        //记录微信服务器post字串

        messageHelper help = new messageHelper();

        string responseContent = help.ReturnMessage(postStr);

        HttpContext.Current.Response.ContentEncoding = Encoding.UTF8;

        HttpContext.Current.Response.Write(responseContent);

        WriteLog(responseContent);   //记录返回微信服务器字串

    }

    //成为开发者url测试，返回echoStr

    public void InterfaceTest()

    {

        string token = "填写的token";

        if (string.IsNullOrEmpty(token))

        {

            return;

        }

        string echoString = HttpContext.Current.Request.QueryString["echoStr"];

        string signature = HttpContext.Current.Request.QueryString["signature"];

        string timestamp = HttpContext.Current.Request.QueryString["timestamp"];

        string nonce = HttpContext.Current.Request.QueryString["nonce"];

        if (!string.IsNullOrEmpty(echoString))

        {

            HttpContext.Current.Response.Write(echoString);

            HttpContext.Current.Response.End();

        }

    }

}