微信公众号开发小计（一）开发底部菜单

前期准备：（1）在微信公众平台注册账号，并申请相应的权限

（2）在基本配置中配置服务器信息，分别填写url token 并随机生成他的消息加密秘钥

                      注：url必须是一个完整的域名而且必须指向80或者443端口，建议使用二级域名，直接去万网解析一个就好

（3）在vs中创建项目，在本项目中叫做Travel.WeChat

项目中得实现：

（1）创建WeChatBussiness文件夹，用于存放微信的一些基础类和实体

《1》创建接受信息的基类

                   

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>
        /// 开发者微信号
        /// </summary>
        public string ToUserName
        {
            get { return _toUserName; }
            set { _toUserName = value; }
        }

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

        /// <summary>
        /// 消息创建时间
        /// </summary>
        public long CreateTime
        {
            get { return _createTime; }
            set { _createTime = value; }
        }

        /// <summary>
        /// 消息类型
        /// </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》创建请求的文本类别               

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>
        /// 消息内容
        /// </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》创建响应的文本类别

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

        /// <summary>
        /// 开发者微信号
        /// </summary>
        public string FromUserName
        {
            get { return _fromUserName; }
            set { _fromUserName = value; }
        }

        /// <summary>
        /// 消息创建时间
        /// </summary>
        public long CreateTime
        {
            get { return _createTime; }
            set { _createTime = value; }
        }

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

《4》创建响应的文本类别

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

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

        /// <summary>
        /// 消息内容
        /// </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）创建WeChatCode文件夹，用于存放微信的一些操作

《1》创建日志记录类

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>
        /// 记录日志
        /// </summary>
        /// <param name="logContext">日志内容</param>
        /// <param name="type">日志类型（0：错误日志；1：正常日志）</param>
        public static void SaveLogs(string logContext, int type)
        {
            string systemPath = "d:\WeChatLogs";
            if (type == 0)
            {
                //错误日志
                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("

[" + DateTime.Now.ToShortTimeString() + "]

	" + 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("

[" + DateTime.Now.ToShortTimeString() + "]

	" + logContext);
                    sw.Close();
                    fs.Close();
                }
                catch (Exception ex)
                { }
            }
        }
    }
}      

《2》创建WeChatInit用于验证微信服务的地址

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

namespace Travel.WeChat.WeCahtCode
{
    public class WeChatInit
    {
        /// <summary>
        /// 微信验证服务地址
        /// </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"]);
            //将接收后的参数进行字典排序 list集合转化为string
            l.Sort();
            foreach (string _s in l)
                s += _s;
            CreateLog.SaveLogs("2=>" + s, 1);
            //编码之后进行对比
            s = FormsAuthentication.HashPasswordForStoringInConfigFile(s, "SHA1").ToLower();
            if (s == context.Request.QueryString["signature"])
            {
                CreateLog.SaveLogs("3=>OK", 1);
                //验证成功 返回给微信同样的数据
                echostr = context.Request.QueryString["echostr"];
            }
            else
            {
                CreateLog.SaveLogs("3=>NO", 1);
            }
            return echostr;
        }

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

《3》创建WeChatMenuManage用于创建微信的菜单

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 的摘要说明
    /// </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": "最新产品", "sub_button": [ { "type": "click","name": "最新产品","key": "NewProduct" }, {"type": "click", "name": "最新特卖", "key": "NewSale" }, { "type": "click", "name": "当季畅销",  "key": "NewSelling" } ] }, {"name": "微站","sub_button": [{"type": "view", "name": "驿马微站", "url": "" + ConfigurationManager.AppSettings["wechatUrl"] + "WeChatSite/Home/Index" } ] }, {"name": "旅游攻略", "sub_button": [ {"type": "view","name": "欧洲攻略","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": "东南亚攻略","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("创建");
        }

        public bool IsReusable
        {
            get
            {
                return false;
            }
        }
        public string PostMoths(string url, string param)
        {
            //创建post请求到服务器接口
            string strURL = url;
            //创建一个请求
            System.Net.HttpWebRequest request;
            request = (System.Net.HttpWebRequest)WebRequest.Create(strURL);
            //请求类型
            request.Method = "POST";
            //请求文本的格式编码
            request.ContentType = "application/json;charset=UTF-8";
            //data
            string paraUrlCoded = param;
            //字节流转化为输出流
            byte[] payload;
            payload = System.Text.Encoding.UTF8.GetBytes(paraUrlCoded);
            request.ContentLength = payload.Length;
            Stream writer = request.GetRequestStream();
            //字节流写入到输出流
            writer.Write(payload, 0, payload.Length);
            writer.Close();
            //响应数据接收  流转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 + "
";
            }
            return strValue;
        }
    }
}

《4》创建微信的入口一般处理程序  与url配置中的名称相同

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 的摘要说明
    /// </summary>
    public class WeChatMain : IHttpHandler
    {

        public void ProcessRequest(HttpContext context)
        {
            string returnStr = "";
            //CreateLog.SaveLogs(context.Request.HttpMethod.ToLower(), 1);
            //检验为get  其余为post
            if (context.Request.HttpMethod.ToLower() == "get")
            {
                //如果传入参数不为空 则进行验证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;
            }
        }
    }
}