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1. ??:

?? ??? ?? ?????? ????? ??? ??? ??? ??? ?? ??? ?????. ???? ?? ?? ???? ?? ??? ??? ? ????. ???? URL? ??? ???? ???. ? ? ?? ???? ?? ??(?? ???? ??) ???? ??? ???. URL? ????? ?? ??? ?? ?????. ? ???? ??? ????? ???, ? ???? ????? ?????? ?? ????? ??? ??? ? ???? ??? ?????. ????? ??? ??? ? ????. ???? ?? ??? ??? ????? ???.

2. ????? ?? ??:

1. ???? ?? - ?? ??:

??? ??? ????. :

const string Token = "aka";//定義一個(gè)局部變量不可以被修改，這里定義的變量要與接口配置信息中填寫的Token一致
protected void Page_Load(object sender, EventArgs e)
{
        string postStr = "";
        Valid();//校驗(yàn)簽名,當(dāng)填入的信息提交之后頁(yè)面有提示“你已成功成為公眾平臺(tái)開(kāi)發(fā)者，可以使用公眾平臺(tái)的開(kāi)發(fā)功能”這個(gè)的時(shí)候，接下來(lái)你就需要注釋掉這個(gè)校驗(yàn)的方法，使得后面的消息回復(fù)得以正常運(yùn)作
        if (Request.HttpMethod.ToLower() == "post")//當(dāng)普通微信用戶向公眾賬號(hào)發(fā)消息時(shí)，微信服務(wù)器將POST該消息到填寫的URL上
        {
            postStr = PostInput();
            if (string.IsNullOrEmpty(postStr) == false)
            {
                //WriteLog(postStr,Server);//計(jì)入日記
                ResponseMsg(postStr);
            }
        }
}
private void Valid()
{
        string echoStr = Request.QueryString["echoStr"].ToString();
        if (CheckSignature())
        {
            if (!string.IsNullOrEmpty(echoStr))
            {
                Response.Write(echoStr);
                Response.End();
            }
        }
}

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/// <summary>
/// 驗(yàn)證微信簽名
/// </summary>
/// <returns></returns>
private bool CheckSignature()
{
        string signature = Request.QueryString["signature"].ToString();
        string timestamp = Request.QueryString["timestamp"].ToString();
        string nonce = Request.QueryString["nonce"].ToString();
        string[] ArrTmp = { Token, timestamp, nonce };
        Array.Sort(ArrTmp);//字典排序
        string tmpStr = string.Join("", ArrTmp);
        tmpStr = FormsAuthentication.HashPasswordForStoringInConfigFile(tmpStr, "SHA1");//對(duì)該字符串進(jìn)行sha1加密
        tmpStr = tmpStr.ToLower();//對(duì)字符串中的字母部分進(jìn)行小寫轉(zhuǎn)換，非字母字符不作處理
        //WriteLog(tmpStr, Server);//計(jì)入日志
        if (tmpStr == signature)//開(kāi)發(fā)者獲得加密后的字符串可與signature對(duì)比，標(biāo)識(shí)該請(qǐng)求來(lái)源于微信。開(kāi)發(fā)者通過(guò)檢驗(yàn)signature對(duì)請(qǐng)求進(jìn)行校驗(yàn)，若確認(rèn)此次GET請(qǐng)求來(lái)自微信服務(wù)器，請(qǐng)?jiān)瓨臃祷豦chostr參數(shù)內(nèi)容，則接入生效，否則接入失敗
        {
            return true;
        }
        else
            return false;
}
/// <summary>
/// 獲取post返回來(lái)的數(shù)據(jù)
/// </summary>
/// <returns></returns>
private string PostInput()
{
        Stream s = System.Web.HttpContext.Current.Request.InputStream;
        byte[] b = new byte[s.Length];
        s.Read(b, 0, (int)s.Length);
        return Encoding.UTF8.GetString(b);
}
/// <summary>
///返回微信信息結(jié)果
/// </summary>
/// <param name="weixinXML"></param>
private void ResponseMsg(string weixinXML)
{
        try
        {
            XmlDocument doc = new XmlDocument();
            doc.LoadXml(weixinXML);//讀取XML字符串
            XmlElement rootElement = doc.DocumentElement;
            XmlNode MsgType = rootElement.SelectSingleNode("MsgType");//獲取字符串中的消息類型
            string resxml = "";
            if (MsgType.InnerText == "text")//如果消息類型為文本消息
            {
                var model = new
                {
                    ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText,
                    FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText,
                    CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText,
                    MsgType = MsgType.InnerText,
                    Content = rootElement.SelectSingleNode("Content").InnerText,
                    MsgId = rootElement.SelectSingleNode("MsgId").InnerText
                };
                resxml += "<xml><ToUserName><![CDATA[" + model.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + model.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime>";
                if (!string.IsNullOrEmpty(model.Content))//如果接收到消息
                {
                    if (model.Content.Contains(" 你好") || model.Content.Contains(" 好") || model.Content.Contains("hi") || model.Content.Contains("hello"))// 你好
                    {
                        resxml += "<MsgType><![CDATA[text]]></MsgType><Content><![CDATA[你好，有事請(qǐng)留言，偶會(huì)及時(shí)回復(fù)你的。]]></Content><FuncFlag>0</FuncFlag></xml>";
                    }
                 }
                 else//沒(méi)有接收到消息
                {
                    resxml += "<MsgType><![CDATA[text]]></MsgType><Content><![CDATA[親，感謝您對(duì)我的關(guān)注，有事請(qǐng)留言。]]></Content><FuncFlag>0</FuncFlag></xml>";
                }
                Response.Write(resxml);
            }
            if (MsgType.InnerText == "image")//如果消息類型為圖片消息
            {
                var model = new
                {
                    ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText,
                    FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText,
                    CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText,
                    MsgType = MsgType.InnerText,
                    PicUrl = rootElement.SelectSingleNode("PicUrl").InnerText,
                    MsgId = rootElement.SelectSingleNode("MsgId").InnerText
                };
                resxml += "<xml><ToUserName><![CDATA[" + model.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + model.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[news]]></MsgType><ArticleCount>1</ArticleCount><Articles><item><Title><![CDATA[歡迎您的光臨！]]></Title><Description><![CDATA[非常感謝您的關(guān)注！]]></Description><PicUrl><![CDATA[http://www.miracleart.cn/]]></PicUrl><Url><![CDATA[http://www.miracleart.cn/]]></Url></item></Articles><FuncFlag>0</FuncFlag></xml>";
                Response.Write(resxml);
            }
            else//如果是其余的消息類型
            {
                var model = new
                {
                    ToUserName = rootElement.SelectSingleNode("ToUserName").InnerText,
                    FromUserName = rootElement.SelectSingleNode("FromUserName").InnerText,
                    CreateTime = rootElement.SelectSingleNode("CreateTime").InnerText,
                };
                resxml += "<xml><ToUserName><![CDATA[" + model.FromUserName + "]]></ToUserName><FromUserName><![CDATA[" + model.ToUserName + "]]></FromUserName><CreateTime>" + ConvertDateTimeInt(DateTime.Now) + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[親，感謝您對(duì)我的關(guān)注，有事請(qǐng)留言，我會(huì)及時(shí)回復(fù)你的哦。]]></Content><FuncFlag>0</FuncFlag></xml>";
                Response.Write(resxml);
            }
        }
        catch (Exception ex)
        {
            throw ex;
        }
        Response.End();
}
/// <summary>
/// datetime轉(zhuǎn)換成unixtime
/// </summary>
/// <param name="time"></param>
/// <returns></returns>
private int ConvertDateTimeInt(System.DateTime time)
{
        System.DateTime startTime = TimeZone.CurrentTimeZone.ToLocalTime(new System.DateTime(1970, 1, 1));
        return (int)(time - startTime).TotalSeconds;
}
/// <summary>
/// 寫日志(用于跟蹤)，可以將想打印出的內(nèi)容計(jì)入一個(gè)文本文件里面，便于測(cè)試
/// </summary>
public static void WriteLog(string strMemo, HttpServerUtility server)
{
        string filename = server.MapPath("/logs/log.txt");//在網(wǎng)站項(xiàng)目中建立一個(gè)文件夾命名logs（然后在文件夾中隨便建立一個(gè)web頁(yè)面文件，避免網(wǎng)站在發(fā)布到服務(wù)器之后看不到預(yù)定文件）
        if (!Directory.Exists(server.MapPath("//logs//")))
            Directory.CreateDirectory("//logs//");
        StreamWriter sr = null;
        try
        {
            if (!File.Exists(filename))
            {
                sr = File.CreateText(filename);
            }
            else
            {
                sr = File.AppendText(filename);
            }
            sr.WriteLine(strMemo);
        }
        catch
        {
        }
        finally
        {
            if (sr != null)
                sr.Close();
        }
}

? ??? .net? ???? WeChat ?? ??? ????? ???? ??? ?? ????? ?????.? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!