微信公眾號開發小計（一）開發底部菜單

前期准備：（1）在微信公眾平台注冊賬號，並申請相應的權限

（2）在基本配置中配置服務器信息，分別填寫url token 並隨機生成他的消息加密秘鑰

                      注：url必須是一個完整的域名而且必須指向80或者443端口，建議使用二級域名，直接去萬網解析一個就好

（3）在vs中創建項目，在本項目中叫做Travel.WeChat

項目中得實現：

（1）創建WeChatBussiness文件夾，用於存放微信的一些基礎類和實體

《1》創建接受信息的基類

                   

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Travel.WeChat.WeChatBussiness
{
    public class ReqBaseMessage
    {
        public ReqBaseMessage()
        { }

        private string _toUserName;
        private string _fromUserName;
        private long _createTime;
        private string _msgType;
        private long _msgId;

        /// <summary>
        /// 開發者微信號
        /// </summary>
        public string ToUserName
        {
            get { return _toUserName; }
            set { _toUserName = value; }
        }

        /// <summary>
        /// 發送者微信號
        /// </summary>
        public string FromUserName
        {
            get { return _fromUserName; }
            set { _fromUserName = value; }
        }

        /// <summary>
        /// 消息創建時間
        /// </summary>
        public long CreateTime
        {
            get { return _createTime; }
            set { _createTime = value; }
        }

        /// <summary>
        /// 消息類型
        /// </summary>
        public string MsgType
        {
            get { return _msgType; }
            set { _msgType = value; }
        }

        /// <summary>
        /// 消息id，64位整型
        /// </summary>
        public long MsgId
        {
            get { return _msgId; }
            set { _msgId = value; }
        }
    }
}

《2》創建請求的文本類別               

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Xml;

namespace Travel.WeChat.WeChatBussiness
{
    public class ReqTextMessage : ReqBaseMessage
    {
        private string _content;

        /// <summary>
        /// 消息內容
        /// </summary>
        public string Content
        {
            get { return _content; }
            set { _content = value; }
        }

        public ReqTextMessage parseXml(string document)
        {
            XmlDocument xmldoc = new XmlDocument();
            xmldoc.LoadXml(document);
            XmlElement roolelement = xmldoc.DocumentElement;
            ToUserName = roolelement.SelectSingleNode("ToUserName").InnerText;
            FromUserName = roolelement.SelectSingleNode("FromUserName").InnerText;
            CreateTime = Convert.ToInt64(roolelement.SelectSingleNode("CreateTime").InnerText);
            MsgType = roolelement.SelectSingleNode("MsgType").InnerText;
            MsgId = Convert.ToInt64(roolelement.SelectSingleNode("MsgId").InnerText);
            Content = roolelement.SelectSingleNode("Content").InnerText;
            return this;
        }
    }
}

《3》創建響應的文本類別

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Travel.WeChat.WeChatBussiness
{
    public class RespBaseMessage
    {
        public RespBaseMessage()
        { }
        private string _toUserName;
        private string _fromUserName;
        private long _createTime;
        private string _msgType;

        /// <summary>
        /// 接收方帳號
        /// </summary>
        public string ToUserName
        {
            get { return _toUserName; }
            set { _toUserName = value; }
        }

        /// <summary>
        /// 開發者微信號
        /// </summary>
        public string FromUserName
        {
            get { return _fromUserName; }
            set { _fromUserName = value; }
        }

        /// <summary>
        /// 消息創建時間
        /// </summary>
        public long CreateTime
        {
            get { return _createTime; }
            set { _createTime = value; }
        }

        /// <summary>
        /// 消息類型
        /// </summary>
        public string MsgType
        {
            get { return _msgType; }
            set { _msgType = value; }
        }
    }
}

《4》創建響應的文本類別

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;

namespace Travel.WeChat.WeChatBussiness
{
    public class RespTextMessage : RespBaseMessage
    {
        private string _content;

        /// <summary>
        /// 消息內容
        /// </summary>
        public string Content
        {
            get { return _content; }
            set { _content = value; }
        }

        public string SendContent()
        {
            return "<xml><ToUserName><![CDATA[" + ToUserName + "]]></ToUserName><FromUserName><![CDATA[" + FromUserName + "]]></FromUserName><CreateTime>" + CreateTime.ToString() + "</CreateTime><MsgType><![CDATA[text]]></MsgType><Content><![CDATA[" + Content + "]]></Content></xml>";
        }
    }
}

（2）創建WeChatCode文件夾，用於存放微信的一些操作

《1》創建日志記錄類

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;

namespace Travel.WeChat.WeCahtCode
{
    public class CreateLog
    {
        /// <summary>
        /// 記錄日志
        /// </summary>
        /// <param name="logContext">日志內容</param>
        /// <param name="type">日志類型（0：錯誤日志；1：正常日志）</param>
        public static void SaveLogs(string logContext, int type)
        {
            string systemPath = "d:\\WeChatLogs";
            if (type == 0)
            {
                //錯誤日志
                try
                {
                    //操作日志
                    string logFileName = systemPath + "\\logError_" + DateTime.Now.ToString("yyyy_MM_dd") + ".txt";
                    FileStream fs = new FileStream(logFileName, FileMode.Append);
                    StreamWriter sw = new StreamWriter(fs, Encoding.Default);
                    sw.Write("\n\r[" + DateTime.Now.ToShortTimeString() + "]\n\r\t" + logContext);
                    sw.Close();
                    fs.Close();
                }
                catch (Exception ex)
                { }
            }
            else if (type == 1)
            {
                try
                {
                    //操作日志
                    string logFileName = systemPath + "\\log_" + DateTime.Now.ToString("yyyy_MM_dd") + ".txt";
                    FileStream fs = new FileStream(logFileName, FileMode.Append);
                    StreamWriter sw = new StreamWriter(fs, Encoding.Default);
                    sw.Write("\n\r[" + DateTime.Now.ToShortTimeString() + "]\n\r\t" + logContext);
                    sw.Close();
                    fs.Close();
                }
                catch (Exception ex)
                { }
            }
        }
    }
}      

《2》創建WeChatInit用於驗證微信服務的地址

using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.Security;

namespace Travel.WeChat.WeCahtCode
{
    public class WeChatInit
    {
        /// <summary>
        /// 微信驗證服務地址
        /// </summary>
        /// <param name="context"></param>
        /// <returns></returns>
        public string VerificationServerUrl(HttpContext context)
        {
            string echostr = "";
            string s = "";
            List<string> l = new List<string>();
            CreateLog.SaveLogs("1=> timestamp=" + context.Request.QueryString["timestamp"] + ";nonce=" + context.Request.QueryString["nonce"] + ";echostr=" + context.Request.QueryString["echostr"] + ";signature=" + context.Request.QueryString["signature"], 1);
            l.Add("微信的token");
            l.Add(context.Request.QueryString["timestamp"]);
            l.Add(context.Request.QueryString["nonce"]);
            //將接收后的參數進行字典排序 list集合轉化為string
            l.Sort();
            foreach (string _s in l)
                s += _s;
            CreateLog.SaveLogs("2=>" + s, 1);
            //編碼之后進行對比
            s = FormsAuthentication.HashPasswordForStoringInConfigFile(s, "SHA1").ToLower();
            if (s == context.Request.QueryString["signature"])
            {
                CreateLog.SaveLogs("3=>OK", 1);
                //驗證成功 返回給微信同樣的數據
                echostr = context.Request.QueryString["echostr"];
            }
            else
            {
                CreateLog.SaveLogs("3=>NO", 1);
            }
            return echostr;
        }

        /// <summary>
        /// 當前時間字符串0
        /// </summary>
        /// <returns></returns>
        public static long datetimestr()
        {
            //時間
            DateTime dt = DateTime.Parse("01/01/1970 ");
            TimeSpan ts = DateTime.Now - dt;
            double sec = ts.TotalSeconds;
            return Convert.ToInt64(sec);
        }
    }
}

《3》創建WeChatMenuManage用於創建微信的菜單

using System;
using System.Collections.Generic;
using System.Configuration;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;

namespace Travel.WeChat.WeCahtCode
{
    /// <summary>
    /// WeChatMenuManage 的摘要說明
    /// </summary>
    public class WeChatMenuManage : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            /* wechat create menu test begin */
            context.Response.ContentType = "text/plain";
            //menu param    
            string paramStr = "{\"button\": [{\"name\": \"最新產品\", \"sub_button\": [ { \"type\": \"click\",\"name\": \"最新產品\",\"key\": \"NewProduct\" }, {\"type\": \"click\", \"name\": \"最新特賣\", \"key\": \"NewSale\" }, { \"type\": \"click\", \"name\": \"當季暢銷\",  \"key\": \"NewSelling\" } ] }, {\"name\": \"微站\",\"sub_button\": [{\"type\": \"view\", \"name\": \"驛馬微站\", \"url\": \"" + ConfigurationManager.AppSettings["wechatUrl"] + "WeChatSite/Home/Index\" } ] }, {\"name\": \"旅游攻略\", \"sub_button\": [ {\"type\": \"view\",\"name\": \"歐洲攻略\",\"url\": \"http://mp.weixin.qq.com/mp/homepage?__biz=MzI2MjQwMTE1MQ==&hid=2&sn=9da11f00955a345a391ffd319f48f574#wechat_redirect\"},{\"type\": \"view\",\"name\": \"迪拜攻略\",\"url\": \"http://mp.weixin.qq.com/mp/homepage?__biz=MzI2MjQwMTE1MQ==&hid=4&sn=6af0c8333b01edf612eda653ce1dd91d#wechat_redirect\"},{\"type\":\"view\",\"name\": \"東南亞攻略\",\"url\": \"http://mp.weixin.qq.com/mp/homepage?__biz=MzI2MjQwMTE1MQ==&hid=3&sn=0e74aa5d2025f08079c593be5bc03a36#wechat_redirect\"}]}]}";
            //be post
            string returnStr = PostMoths("https://api.weixin.qq.com/cgi-bin/menu/create?access_token=" + context.Request.QueryString["access_token"], paramStr);
            context.Response.Write("創建");
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
        public string PostMoths(string url, string param)
        {
            //創建post請求到服務器接口
            string strURL = url;
            //創建一個請求
            System.Net.HttpWebRequest request;
            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            //請求類型
            request.Method = "POST";
            //請求文本的格式編碼
            request.ContentType = "application/json;charset=UTF-8";
            //data
            string paraUrlCoded = param;
            //字節流轉化為輸出流
            byte[] payload;
            payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
            request.ContentLength = payload.Length;
            Stream writer = request.GetRequestStream();
            //字節流寫入到輸出流
            writer.Write(payload, 0, payload.Length);
            writer.Close();
            //響應數據接收  流轉string格式
            System.Net.HttpWebResponse response;
            response = (System.Net.HttpWebResponse)request.GetResponse();
            System.IO.Stream s;
            s = response.GetResponseStream();
            string StrDate = "";
            string strValue = "";
            StreamReader Reader = new StreamReader(s, Encoding.UTF8);
            while ((StrDate = Reader.ReadLine()) != null)
            {
                strValue += StrDate + "\r\n";
            }
            return strValue;
        }
    }
}

《4》創建微信的入口一般處理程序  與url配置中的名稱相同

using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text;
using System.Web;
using Travel.WeChat.WeCahtCode;

namespace Travel.WeChat
{
    /// <summary>
    /// WeChatMain 的摘要說明
    /// </summary>
    public class WeChatMain : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            string returnStr = "";
            //CreateLog.SaveLogs(context.Request.HttpMethod.ToLower(), 1);
            //檢驗為get  其余為post
            if (context.Request.HttpMethod.ToLower() == "get")
            {
                //如果傳入參數不為空 則進行驗證url是否有效
                if (context.Request.QueryString["signature"] != null)
                {
                    WeChatInit wci = new WeChatInit();
                    returnStr = wci.VerificationServerUrl(context);
                }
            }
            else if (context.Request.HttpMethod.ToLower() == "post")
            {
               
            }
            if (returnStr != "")
            {
                context.Response.ContentType = "text/plain";
                CreateLog.SaveLogs(returnStr, 1);
                context.Response.Write(returnStr);
            }
        }

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