微信信息处理微信公众平台开发教程（1）

Senparc.Weixin SDK 是由盛派网络（Senparc）团队自主研发的针对微信各模块的开发套件（C# SDK），已全面支持微信公众号、微信支付、企业号、开放平台、JSSDK、摇一摇周边等模块。快使用 Senparc.Weixin SDK 轻松打造微信各平台的扩展应用吧！

如何把SDK引入到项目中看http://www.cnblogs.com/szw/p/3414732.html

引入到项目中过后我们开始进行微信的信息处理。

示例项目为ASP.NET MVC。

1.登陆公众号，然后打开基本配置。

2.创建一个控制器用于接收微信post过来的数据

 public class WebChartAutoController : Controller
    {
        public static readonly string Token = Config.Token;//与微信公众账号后台的Token设置保持一致，区分大小写。
        public static readonly string EncodingAESKey =Config.EncodingAESKey;//与微信公众账号后台的EncodingAESKey设置保持一致，区分大小写。
        public static readonly string AppId = Config.AppID;//与微信公众账号后台的AppId设置保持一致，区分大小写。
        [HttpGet]
        [ActionName("Index")]
        public ActionResult Get(PostModel postModel, string echostr)
        {
            if (CheckSignature.Check(postModel.Signature, postModel.Timestamp, postModel.Nonce, Token))
            {
                return Content(echostr); //返回随机字符串则表示验证通过
            }
            else
            {
                return Content("failed:" + postModel.Signature + "," + Senparc.Weixin.MP.CheckSignature.GetSignature(postModel.Timestamp, postModel.Nonce, Token) + "。" +
                    "如果你在浏览器中看到这句话，说明此地址可以被作为微信公众账号后台的Url，请注意保持Token一致。");
            }
        }

        /// <summary>
        /// 最简化的处理流程（不加密）
        /// </summary>
        [HttpPost]
        [ActionName("Index")]
        public ActionResult Index(PostModel postModel)
        {
            if (!CheckSignature.Check(postModel.Signature, postModel.Timestamp, postModel.Nonce, Token))
            {
                //return Content("参数错误！");//v0.7-
                return new WeixinResult("参数错误！");//v0.8+
            }
          
            postModel.Token = Token;
            postModel.EncodingAESKey = EncodingAESKey;//根据自己后台的设置保持一致
            postModel.AppId = AppId;//根据自己后台的设置保持一致        
            var messageHandler = new CustomMessageHandler(Request.InputStream, postModel, 10);       
            messageHandler.Execute();//执行微信处理过程
            //return Content(messageHandler.ResponseDocument.ToString());//v0.7-
            return new FixWeixinBugWeixinResult(messageHandler);//v0.8+
         
        }
 }
 }

3.创建一个CustomMessageHandler信息处理机制来处理微信客户端POST过来的数据。

/// <summary>
    /// 自定义MessageHandler
    /// 把MessageHandler作为基类，重写对应请求的处理方法
    /// </summary>
    public partial class CustomMessageHandler : MessageHandler<CustomMessageContext>
    {
        /*
         * 重要提示：v1.5起，MessageHandler提供了一个DefaultResponseMessage的抽象方法，
         * DefaultResponseMessage必须在子类中重写，用于返回没有处理过的消息类型（也可以用于默认消息，如帮助信息等）；
         * 其中所有原OnXX的抽象方法已经都改为虚方法，可以不必每个都重写。若不重写，默认返回DefaultResponseMessage方法中的结果。
         */


#if DEBUG
        string agentUrl = "http://localhost:12222/App/Weixin/4";
        string agentToken = "27C455F496044A87";
        string wiweihiKey = "CNadjJuWzyX5bz5Gn+/XoyqiqMa5DjXQ";
#else
        //下面的Url和Token可以用其他平台的消息，或者到www.weiweihi.com注册微信用户，将自动在“微信营销工具”下得到
        private string agentUrl = WebConfigurationManager.AppSettings["WeixinAgentUrl"];//这里使用了www.weiweihi.com微信自动托管平台
        private string agentToken = WebConfigurationManager.AppSettings["WeixinAgentToken"];//Token
        private string wiweihiKey = WebConfigurationManager.AppSettings["WeixinAgentWeiweihiKey"];//WeiweihiKey专门用于对接www.Weiweihi.com平台，获取方式见：http://www.weiweihi.com/ApiDocuments/Item/25#51
#endif

        private string appId = WebConfigurationManager.AppSettings["WeixinAppId"];
        private string appSecret = WebConfigurationManager.AppSettings["WeixinAppSecret"];

        /// <summary>
        /// 模板消息集合（Key：checkCode，Value：OpenId）
        /// </summary>
        public static Dictionary<string, string> TemplateMessageCollection = new Dictionary<string, string>();

        public CustomMessageHandler(Stream inputStream, PostModel postModel, int maxRecordCount = 0)
            : base(inputStream, postModel, maxRecordCount)
        {
            //这里设置仅用于测试，实际开发可以在外部更全局的地方设置，
            //比如MessageHandler<MessageContext>.GlobalWeixinContext.ExpireMinutes = 3。
            WeixinContext.ExpireMinutes = 3;

            if (!string.IsNullOrEmpty(postModel.AppId))
            {
                appId = postModel.AppId;//通过第三方开放平台发送过来的请求
            }

            //在指定条件下，不使用消息去重
            base.OmitRepeatedMessageFunc = requestMessage =>
            {
                var textRequestMessage = requestMessage as RequestMessageText;
                if (textRequestMessage != null && textRequestMessage.Content == "容错")
                {
                    return false;
                }
                return true;
            };
        }

        public override void OnExecuting()
        {
            //测试MessageContext.StorageData
            if (CurrentMessageContext.StorageData == null)
            {
                CurrentMessageContext.StorageData = 0;
            }
            base.OnExecuting();
        }

        public override void OnExecuted()
        {
            base.OnExecuted();
            CurrentMessageContext.StorageData = ((int)CurrentMessageContext.StorageData) + 1;
        }

        /// <summary>
        /// 处理文字请求
        /// </summary>
        /// <returns></returns>
        public override IResponseMessageBase OnTextRequest(RequestMessageText requestMessage)
        {
            //TODO:这里的逻辑可以交给Service处理具体信息，参考OnLocationRequest方法或/Service/LocationSercice.cs

            //书中例子
            //if (requestMessage.Content == "你好")
            //{
            //    var responseMessage = base.CreateResponseMessage<ResponseMessageNews>();
            //    var title = "Title";
            //    var description = "Description";
            //    var picUrl = "PicUrl";
            //    var url = "Url";
            //    responseMessage.Articles.Add(new Article()
            //    {
            //        Title = title,
            //        Description = description,
            //        PicUrl = picUrl,
            //        Url = url
            //    });
            //    return responseMessage;
            //}
            //else if (requestMessage.Content == "Senparc")
            //{
            //    //相似处理逻辑
            //}
            //else
            //{
            //    //...
            //}



            //方法一（v0.1），此方法调用太过繁琐，已过时（但仍是所有方法的核心基础），建议使用方法二到四
            //var responseMessage =
            //    ResponseMessageBase.CreateFromRequestMessage(RequestMessage, ResponseMsgType.Text) as
            //    ResponseMessageText;

            //方法二（v0.4）
            //var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(RequestMessage);

            //方法三（v0.4），扩展方法，需要using Senparc.Weixin.MP.Helpers;
            //var responseMessage = RequestMessage.CreateResponseMessage<ResponseMessageText>();

            //方法四（v0.6+），仅适合在HandlerMessage内部使用，本质上是对方法三的封装
            //注意：下面泛型ResponseMessageText即返回给客户端的类型，可以根据自己的需要填写ResponseMessageNews等不同类型。

            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            LogHelper.WriteLog(null, "CustomMessageHandler"+ requestMessage.Content);
            if (requestMessage.Content == null)
            {

            }
            else if (requestMessage.Content == "约束")
            {
                responseMessage.Content =
                    @"您正在进行微信内置浏览器约束判断测试。。";
            }
            else if (requestMessage.Content == "托管" || requestMessage.Content == "代理")
            {
                //开始用代理托管，把请求转到其他服务器上去，然后拿回结果
                //甚至也可以将所有请求在DefaultResponseMessage()中托管到外部。

                DateTime dt1 = DateTime.Now; //计时开始

                var responseXml = MessageAgent.RequestXml(this, agentUrl, agentToken, RequestDocument.ToString());
                //获取返回的XML
                //上面的方法也可以使用扩展方法：this.RequestResponseMessage(this,agentUrl, agentToken, RequestDocument.ToString());

                /* 如果有WeiweihiKey，可以直接使用下面的这个MessageAgent.RequestWeiweihiXml()方法。
                 * WeiweihiKey专门用于对接www.weiweihi.com平台，获取方式见：http://www.weiweihi.com/ApiDocuments/Item/25#51
                 */
                //var responseXml = MessageAgent.RequestWeiweihiXml(weiweihiKey, RequestDocument.ToString());//获取Weiweihi返回的XML

                DateTime dt2 = DateTime.Now; //计时结束

                //转成实体。
                /* 如果要写成一行，可以直接用：
                 * responseMessage = MessageAgent.RequestResponseMessage(agentUrl, agentToken, RequestDocument.ToString());
                 * 或
                 *
                 */
                var msg = string.Format("\r\n\r\n代理过程总耗时：{0}毫秒", (dt2 - dt1).Milliseconds);
                var agentResponseMessage = responseXml.CreateResponseMessage();
                if (agentResponseMessage is ResponseMessageText)
                {
                    (agentResponseMessage as ResponseMessageText).Content += msg;
                }
                else if (agentResponseMessage is ResponseMessageNews)
                {
                    (agentResponseMessage as ResponseMessageNews).Articles[0].Description += msg;
                }
                return agentResponseMessage;//可能出现多种类型，直接在这里返回
            }
            else if (requestMessage.Content == "测试" || requestMessage.Content == "退出")
            {
                /*
                * 这是一个特殊的过程，此请求通常来自于微微嗨（http://www.weiweihi.com）的“盛派网络小助手”应用请求（http://www.weiweihi.com/User/App/Detail/1），
                * 用于演示微微嗨应用商店的处理过程，由于微微嗨的应用内部可以单独设置对话过期时间，所以这里通常不需要考虑对话状态，只要做最简单的响应。
                */
                if (requestMessage.Content == "测试")
                {
                    //进入APP测试
                    responseMessage.Content = "您已经进入。";
                }
                else
                {
                    //退出APP测试
                    responseMessage.Content = "您已经退出。";
                }
            }
            else if (requestMessage.Content == "AsyncTest")
            {
                //异步并发测试（提供给单元测试使用）
                DateTime begin = DateTime.Now;
                int t1, t2, t3;
                System.Threading.ThreadPool.GetAvailableThreads(out t1, out t3);
                System.Threading.ThreadPool.GetMaxThreads(out t2, out t3);
                System.Threading.Thread.Sleep(TimeSpan.FromSeconds(4));
                DateTime end = DateTime.Now;
                var thread = System.Threading.Thread.CurrentThread;
                responseMessage.Content = string.Format("TId:{0}\tApp:{1}\tBegin:{2:mm:ss,ffff}\tEnd:{3:mm:ss,ffff}\tTPool：{4}",
                        thread.ManagedThreadId,
                        HttpContext.Current != null ? HttpContext.Current.ApplicationInstance.GetHashCode() : -1,
                        begin,
                        end,
                        t2 - t1
                        );
            }
            else if (requestMessage.Content.ToUpper() == "OPEN")
            {
                var openResponseMessage = requestMessage.CreateResponseMessage<ResponseMessageNews>();
                openResponseMessage.Articles.Add(new Article()
                {
                    Title = "开放平台微信授权测试",
                    Description = @"点击进入Open授权页面。。",
                    Url = "http://sdk.weixin.senparc.com/OpenOAuth/JumpToMpOAuth"
                });
                return openResponseMessage;
            }
            else if (requestMessage.Content == "错误")
            {
                var errorResponseMessage = requestMessage.CreateResponseMessage<ResponseMessageText>();
                //因为没有设置errorResponseMessage.Content，所以这小消息将无法正确返回。
                return errorResponseMessage;
            }
            else if (requestMessage.Content == "容错")
            {
                Thread.Sleep(1500);//故意延时1.5秒，让微信多次发送消息过来，观察返回结果
                var faultTolerantResponseMessage = requestMessage.CreateResponseMessage<ResponseMessageText>();
                faultTolerantResponseMessage.Content = string.Format("测试容错，MsgId：{0}，Ticks：{1}", requestMessage.MsgId,
                    DateTime.Now.Ticks);
                return faultTolerantResponseMessage;
            }
            else if (requestMessage.Content.ToUpper() == "TM")//异步模板消息设置
            {
                var openId = requestMessage.FromUserName;
                var checkCode = Guid.NewGuid().ToString("n").Substring(0, 3);//为了防止openId泄露造成骚扰，这里启用验证码
                TemplateMessageCollection[checkCode] = openId;
                responseMessage.Content = string.Format(@"新的验证码为：{0}，请在网页上输入", checkCode);
            }
            else if (requestMessage.Content.ToUpper() == "OPENID") //返回OpenId及用户信息
            {
                var openId = requestMessage.FromUserName;//获取OpenId
                var userInfo = AdvancedAPIs.UserApi.Info(appId, openId, Language.zh_CN);

                responseMessage.Content = string.Format(
                    "您的OpenID为：{0}\r\n昵称：{1}\r\n性别：{2}\r\n地区（国家/省/市）：{3}/{4}/{5}\r\n关注时间：{6}\r\n关注状态：{7}",
                    requestMessage.FromUserName, userInfo.nickname, (Sex)userInfo.sex, userInfo.country, userInfo.province, userInfo.city, DateTimeHelper.GetDateTimeFromXml(userInfo.subscribe_time), userInfo.subscribe);
            }
            else if (requestMessage.Content.ToUpper() == "EX")
            {
                var ex = new WeixinException("openid:" + requestMessage.FromUserName + ":这是一条测试异常信息");//回调过程在global的ConfigWeixinTraceLog()方法中
                responseMessage.Content = "请等待异步模板消息发送到此界面上（自动延时数秒）。\r\n当前时间：" + DateTime.Now.ToString();
            }
            else
            {
                var result = new StringBuilder();
                result.AppendFormat("您刚才发送了文字信息：{0}\r\n\r\n", requestMessage.Content);

                if (CurrentMessageContext.RequestMessages.Count > 1)
                {
                    result.AppendFormat("您刚才还发送了如下消息（{0}/{1}）：\r\n", CurrentMessageContext.RequestMessages.Count,
                        CurrentMessageContext.StorageData);
                    for (int i = CurrentMessageContext.RequestMessages.Count - 2; i >= 0; i--)
                    {
                        var historyMessage = CurrentMessageContext.RequestMessages[i];
                        result.AppendFormat("{0} 【{1}】{2}\r\n",
                            historyMessage.CreateTime.ToShortTimeString(),
                            historyMessage.MsgType.ToString(),
                            (historyMessage is RequestMessageText)
                                ? (historyMessage as RequestMessageText).Content
                                : "[非文字类型]"
                            );
                    }
                    result.AppendLine("\r\n");
                }

                result.AppendFormat("如果您在{0}分钟内连续发送消息，记录将被自动保留（当前设置：最多记录{1}条）。过期后记录将会自动清除。\r\n",
                    WeixinContext.ExpireMinutes, WeixinContext.MaxRecordCount);
                result.AppendLine("\r\n");
                result.AppendLine(
                    "您还可以发送【位置】【图片】【语音】【视频】等类型的信息（注意是这几种类型，不是这几个文字），查看不同格式的回复。\r\nSDK官方地址：http://sdk.weixin.senparc.com");

                responseMessage.Content = result.ToString();
            }
            return responseMessage;
        }

        /// <summary>
        /// 处理位置请求
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnLocationRequest(RequestMessageLocation requestMessage)
        {
            var locationService = new LocationService();
            var responseMessage = locationService.GetResponseMessage(requestMessage as RequestMessageLocation);
            return responseMessage;
        }

        public override IResponseMessageBase OnShortVideoRequest(RequestMessageShortVideo requestMessage)
        {
            var responseMessage = this.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "您刚才发送的是小视频";
            return responseMessage;
        }

        /// <summary>
        /// 处理图片请求
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnImageRequest(RequestMessageImage requestMessage)
        {
            var responseMessage = CreateResponseMessage<ResponseMessageNews>();
            responseMessage.Articles.Add(new Article()
            {
                Title = "您刚才发送了图片信息",
                Description = "您发送的图片将会显示在边上",
                PicUrl = requestMessage.PicUrl,
                Url = "http://sdk.weixin.senparc.com"
            });
            responseMessage.Articles.Add(new Article()
            {
                Title = "第二条",
                Description = "第二条带连接的内容",
                PicUrl = requestMessage.PicUrl,
                Url = "http://sdk.weixin.senparc.com"
            });

            return responseMessage;
        }

        /// <summary>
        /// 处理语音请求
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnVoiceRequest(RequestMessageVoice requestMessage)
        {
            var responseMessage = CreateResponseMessage<ResponseMessageMusic>();
            //上传缩略图
            var accessToken = Containers.AccessTokenContainer.TryGetAccessToken(appId, appSecret);
            var uploadResult = AdvancedAPIs.MediaApi.UploadTemporaryMedia(accessToken, UploadMediaFileType.image, System.Web.HttpContext.Current.Server.MapPath("~/Images/Logo.jpg"));

            //设置音乐信息
            responseMessage.Music.Title = "天籁之音";
            responseMessage.Music.Description = "播放您上传的语音";
            responseMessage.Music.MusicUrl = "http://sdk.weixin.senparc.com/Media/GetVoice?mediaId=" + requestMessage.MediaId;
            responseMessage.Music.HQMusicUrl = "http://sdk.weixin.senparc.com/Media/GetVoice?mediaId=" + requestMessage.MediaId;
            responseMessage.Music.ThumbMediaId = uploadResult.media_id;
            return responseMessage;
        }
        /// <summary>
        /// 处理视频请求
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnVideoRequest(RequestMessageVideo requestMessage)
        {
            var responseMessage = CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "您发送了一条视频信息，ID：" + requestMessage.MediaId;
            return responseMessage;
        }

        /// <summary>
        /// 处理链接消息请求
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnLinkRequest(RequestMessageLink requestMessage)
        {
            var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
            responseMessage.Content = string.Format(@"您发送了一条连接信息：
Title：{0}
Description:{1}
Url:{2}", requestMessage.Title, requestMessage.Description, requestMessage.Url);
            return responseMessage;
        }

        /// <summary>
        /// 处理事件请求（这个方法一般不用重写，这里仅作为示例出现。除非需要在判断具体Event类型以外对Event信息进行统一操作
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEventRequest(IRequestMessageEventBase requestMessage)
        {
            var eventResponseMessage = base.OnEventRequest(requestMessage);//对于Event下属分类的重写方法，见：CustomerMessageHandler_Events.cs
            //TODO: 对Event信息进行统一操作
            return eventResponseMessage;
        }

        public override IResponseMessageBase DefaultResponseMessage(IRequestMessageBase requestMessage)
        {
            /* 所有没有被处理的消息会默认返回这里的结果，
            * 因此，如果想把整个微信请求委托出去（例如需要使用分布式或从其他服务器获取请求），
            * 只需要在这里统一发出委托请求，如：
            * var responseMessage = MessageAgent.RequestResponseMessage(agentUrl, agentToken, RequestDocument.ToString());
            * return responseMessage;
            */

            var responseMessage = this.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "这条消息来自DefaultResponseMessage。";
            return responseMessage;
        }
    }
}

这儿是针对于Event下属分类的重写方法

/*----------------------------------------------------------------
    Copyright (C) 2017 Senparc
    
    文件名：CustomMessageHandler_Events.cs
    文件功能描述：自定义MessageHandler
    
    
    创建标识：Senparc - 20150312
----------------------------------------------------------------*/

using System;
using System.Diagnostics;
using System.Linq;
using System.Threading.Tasks;
using System.Web;
using Senparc.Weixin.MP.Agent;
using Senparc.Weixin.Context;
using Senparc.Weixin.Exceptions;
using Senparc.Weixin.HttpUtility;
using Senparc.Weixin.MP.Entities;
using Senparc.Weixin.MP.Helpers;
using Senparc.Weixin.MP.MessageHandlers;
using Senparc.Weixin.MP.Sample.CommonService.Download;

namespace Senparc.Weixin.MP.Sample.CommonService.CustomMessageHandler
{
    /// <summary>
    /// 自定义MessageHandler
    /// </summary>
    public partial class CustomMessageHandler
    {
        private string GetWelcomeInfo()
        {
            //获取Senparc.Weixin.MP.dll版本信息
            var fileVersionInfo = FileVersionInfo.GetVersionInfo(HttpContext.Current.Server.MapPath("~/bin/Senparc.Weixin.MP.dll"));
            var version = string.Format("{0}.{1}.{2}", fileVersionInfo.FileMajorPart, fileVersionInfo.FileMinorPart, fileVersionInfo.FileBuildPart);
            return string.Format(
@"欢迎关注【Senparc.Weixin.MP 微信公众平台SDK】，当前运行版本：v{0}。
您可以发送【文字】【位置】【图片】【语音】等不同类型的信息，查看不同格式的回复。

您也可以直接点击菜单查看各种类型的回复。
还可以点击菜单体验微信支付。

SDK官方地址：https://weixin.senparc.com
SDK Demo：http://sdk.weixin.senparc.com
源代码及Demo下载地址：https://github.com/JeffreySu/WeiXinMPSDK
Nuget地址：https://www.nuget.org/packages/Senparc.Weixin.MP
QQ群：342319110

===============
更多：

1、JSSDK测试：http://sdk.weixin.senparc.com/WeixinJSSDK

2、开放平台测试（建议PC上打开）：http://sdk.weixin.senparc.com/OpenOAuth/JumpToMpOAuth

3、回复关键字：

【open】   进入第三方开放平台（Senparc.Weixin.Open）测试

【tm】     测试异步模板消息

【openid】 获取OpenId等用户信息

【约束】   测试微信浏览器约束

【AsyncTest】 异步并发测试

【错误】    体验发生错误无法返回正确信息

【容错】    体验去重容错

【ex】      体验错误日志推送提醒
",
                version);
        }

        public string GetDownloadInfo(CodeRecord codeRecord)
        {
            return string.Format(@"您已通过二维码验证，浏览器即将开始下载 Senparc.Weixin SDK 帮助文档。
当前选择的版本：v{0}（{1}）

我们期待您的意见和建议，客服热线：400-031-8816。

感谢您对盛派网络的支持！

© 2016 Senparc", codeRecord.Version, codeRecord.IsWebVersion ? "网页版" : ".chm文档版");
        }

        public override IResponseMessageBase OnTextOrEventRequest(RequestMessageText requestMessage)
        {
            // 预处理文字或事件类型请求。
            // 这个请求是一个比较特殊的请求，通常用于统一处理来自文字或菜单按钮的同一个执行逻辑，
            // 会在执行OnTextRequest或OnEventRequest之前触发，具有以下一些特征：
            // 1、如果返回null，则继续执行OnTextRequest或OnEventRequest
            // 2、如果返回不为null，则终止执行OnTextRequest或OnEventRequest，返回最终ResponseMessage
            // 3、如果是事件，则会将RequestMessageEvent自动转为RequestMessageText类型，其中RequestMessageText.Content就是RequestMessageEvent.EventKey

            if (requestMessage.Content == "OneClick")
            {
                var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                strongResponseMessage.Content = "您点击了底部按钮。\r\n为了测试微信软件换行bug的应对措施，这里做了一个——\r\n换行";
                return strongResponseMessage;
            }
            return null;//返回null，则继续执行OnTextRequest或OnEventRequest
        }

        public override IResponseMessageBase OnEvent_ClickRequest(RequestMessageEvent_Click requestMessage)
        {
            IResponseMessageBase reponseMessage = null;
            //菜单点击，需要跟创建菜单时的Key匹配
            switch (requestMessage.EventKey)
            {
                case "OneClick":
                    {
                        //这个过程实际已经在OnTextOrEventRequest中完成，这里不会执行到。
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了底部按钮。\r\n为了测试微信软件换行bug的应对措施，这里做了一个——\r\n换行";
                    }
                    break;
                case "SubClickRoot_Text":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了子菜单按钮。";
                    }
                    break;
                case "SubClickRoot_News":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageNews>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Articles.Add(new Article()
                        {
                            Title = "您点击了子菜单图文按钮",
                            Description = "您点击了子菜单图文按钮，这是一条图文信息。",
                            PicUrl = "http://sdk.weixin.senparc.com/Images/qrcode.jpg",
                            Url = "http://sdk.weixin.senparc.com"
                        });
                    }
                    break;
                case "SubClickRoot_Music":
                    {
                        //上传缩略图
                        var accessToken = Containers.AccessTokenContainer.TryGetAccessToken(appId, appSecret);
                        var uploadResult = AdvancedAPIs.MediaApi.UploadTemporaryMedia(accessToken, UploadMediaFileType.thumb,
                                                                     System.Web.HttpContext.Current.Server.MapPath("~/Images/Logo.jpg"));
                        //设置音乐信息
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageMusic>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Music.Title = "天籁之音";
                        strongResponseMessage.Music.Description = "真的是天籁之音";
                        strongResponseMessage.Music.MusicUrl = "http://sdk.weixin.senparc.com/Content/music1.mp3";
                        strongResponseMessage.Music.HQMusicUrl = "http://sdk.weixin.senparc.com/Content/music1.mp3";
                        strongResponseMessage.Music.ThumbMediaId = uploadResult.thumb_media_id;
                    }
                    break;
                case "SubClickRoot_Image":
                    {
                        //上传图片
                        var accessToken = Containers.AccessTokenContainer.TryGetAccessToken(appId, appSecret);
                        var uploadResult = AdvancedAPIs.MediaApi.UploadTemporaryMedia(accessToken, UploadMediaFileType.image,
                                                                    System.Web.HttpContext.Current.Server.MapPath("~/Images/Logo.jpg"));
                        //设置图片信息
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageImage>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Image.MediaId = uploadResult.media_id;
                    }
                    break;
                case "SubClickRoot_Agent"://代理消息
                    {
                        //获取返回的XML
                        DateTime dt1 = DateTime.Now;
                        reponseMessage = MessageAgent.RequestResponseMessage(this, agentUrl, agentToken, RequestDocument.ToString());
                        //上面的方法也可以使用扩展方法：this.RequestResponseMessage(this,agentUrl, agentToken, RequestDocument.ToString());

                        DateTime dt2 = DateTime.Now;

                        if (reponseMessage is ResponseMessageNews)
                        {
                            (reponseMessage as ResponseMessageNews)
                                .Articles[0]
                                .Description += string.Format("\r\n\r\n代理过程总耗时：{0}毫秒", (dt2 - dt1).Milliseconds);
                        }
                    }
                    break;
                case "Member"://托管代理会员信息
                    {
                        //原始方法为：MessageAgent.RequestXml(this,agentUrl, agentToken, RequestDocument.ToString());//获取返回的XML
                        reponseMessage = this.RequestResponseMessage(agentUrl, agentToken, RequestDocument.ToString());
                    }
                    break;
                case "OAuth"://OAuth授权测试
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageNews>();

                        strongResponseMessage.Articles.Add(new Article()
                        {
                            Title = "OAuth2.0测试",
                            Description = "选择下面两种不同的方式进行测试，区别在于授权成功后，最后停留的页面。",
                            //Url = "http://sdk.weixin.senparc.com/oauth2",
                            //PicUrl = "http://sdk.weixin.senparc.com/Images/qrcode.jpg"
                        });

                        strongResponseMessage.Articles.Add(new Article()
                        {
                            Title = "OAuth2.0测试（不带returnUrl），测试环境可使用",
                            Description = "OAuth2.0测试（不带returnUrl）",
                            Url = "http://sdk.weixin.senparc.com/oauth2",
                            PicUrl = "http://sdk.weixin.senparc.com/Images/qrcode.jpg"
                        });

                        var returnUrl = "/OAuth2/TestReturnUrl";
                        strongResponseMessage.Articles.Add(new Article()
                        {
                            Title = "OAuth2.0测试（带returnUrl），生产环境强烈推荐使用",
                            Description = "OAuth2.0测试（带returnUrl）",
                            Url = "http://sdk.weixin.senparc.com/oauth2?returnUrl=" + returnUrl.UrlEncode(),
                            PicUrl = "http://sdk.weixin.senparc.com/Images/qrcode.jpg"
                        });

                        reponseMessage = strongResponseMessage;

                    }
                    break;
                case "Description":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        strongResponseMessage.Content = GetWelcomeInfo();
                        reponseMessage = strongResponseMessage;
                    }
                    break;
                case "SubClickRoot_PicPhotoOrAlbum":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了【微信拍照】按钮。系统将会弹出拍照或者相册发图。";
                    }
                    break;
                case "SubClickRoot_ScancodePush":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了【微信扫码】按钮。";
                    }
                    break;
                case "ConditionalMenu_Male":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了个性化菜单按钮，您的微信性别设置为：男。";
                    }
                    break;
                case "ConditionalMenu_Femle":
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        reponseMessage = strongResponseMessage;
                        strongResponseMessage.Content = "您点击了个性化菜单按钮，您的微信性别设置为：女。";
                    }
                    break;
                default:
                    {
                        var strongResponseMessage = CreateResponseMessage<ResponseMessageText>();
                        strongResponseMessage.Content = "您点击了按钮，EventKey：" + requestMessage.EventKey;
                        reponseMessage = strongResponseMessage;
                    }
                    break;
            }

            return reponseMessage;
        }

        public override IResponseMessageBase OnEvent_EnterRequest(RequestMessageEvent_Enter requestMessage)
        {
            var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
            responseMessage.Content = "您刚才发送了ENTER事件请求。";
            return responseMessage;
        }

        public override IResponseMessageBase OnEvent_LocationRequest(RequestMessageEvent_Location requestMessage)
        {
            //这里是微信客户端（通过微信服务器）自动发送过来的位置信息
            var responseMessage = CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "这里写什么都无所谓，比如：上帝爱你！";
            return responseMessage;//这里也可以返回null（需要注意写日志时候null的问题）
        }

        public override IResponseMessageBase OnEvent_ScanRequest(RequestMessageEvent_Scan requestMessage)
        {
            //通过扫描关注
            var responseMessage = CreateResponseMessage<ResponseMessageText>();

            //下载文档
            //if (!string.IsNullOrEmpty(requestMessage.EventKey))
            //{
            //    var sceneId = long.Parse(requestMessage.EventKey.Replace("qrscene_", ""));
            //    //var configHelper = new ConfigHelper(new HttpContextWrapper(HttpContext.Current));
            //    var codeRecord =
            //        ConfigHelper.CodeCollection.Values.FirstOrDefault(z => z.QrCodeTicket != null && z.QrCodeId == sceneId);


            //    if (codeRecord != null)
            //    {
            //        //确认可以下载
            //        codeRecord.AllowDownload = true;
            //        responseMessage.Content = GetDownloadInfo(codeRecord);
            //    }
            //}

            responseMessage.Content = responseMessage.Content ?? string.Format("通过扫描二维码进入，场景值：{0}", requestMessage.EventKey);



            return responseMessage;
        }

        public override IResponseMessageBase OnEvent_ViewRequest(RequestMessageEvent_View requestMessage)
        {
            //说明：这条消息只作为接收，下面的responseMessage到达不了客户端，类似OnEvent_UnsubscribeRequest
            var responseMessage = CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "您点击了view按钮，将打开网页：" + requestMessage.EventKey;
            return responseMessage;
        }

        public override IResponseMessageBase OnEvent_MassSendJobFinishRequest(RequestMessageEvent_MassSendJobFinish requestMessage)
        {
            var responseMessage = CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "接收到了群发完成的信息。";
            return responseMessage;
        }

        /// <summary>
        /// 订阅（关注）事件
        /// </summary>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_SubscribeRequest(RequestMessageEvent_Subscribe requestMessage)
        {
            var responseMessage = ResponseMessageBase.CreateFromRequestMessage<ResponseMessageText>(requestMessage);
            responseMessage.Content = GetWelcomeInfo();
            if (!string.IsNullOrEmpty(requestMessage.EventKey))
            {
                responseMessage.Content += "\r\n============\r\n场景值：" + requestMessage.EventKey;
            }

            //推送消息
            //下载文档
            if (requestMessage.EventKey.StartsWith("qrscene_"))
            {
                var sceneId = long.Parse(requestMessage.EventKey.Replace("qrscene_", ""));
                //var configHelper = new ConfigHelper(new HttpContextWrapper(HttpContext.Current));
                //var codeRecord =
                //    ConfigHelper.CodeCollection.Values.FirstOrDefault(z => z.QrCodeTicket != null && z.QrCodeId == sceneId);

                //if (codeRecord != null)
                //{
                //    if (codeRecord.AllowDownload)
                //    {
                //        Task.Factory.StartNew(() => AdvancedAPIs.CustomApi.SendTextAsync(null, WeixinOpenId, "下载已经开始，如需下载其他版本，请刷新页面后重新扫一扫。"));
                //    }
                //    else
                //    {
                //        //确认可以下载
                //        codeRecord.AllowDownload = true;
                //        Task.Factory.StartNew(() => AdvancedAPIs.CustomApi.SendTextAsync(null, WeixinOpenId, GetDownloadInfo(codeRecord)));
                //    }
                //}
            }


            return responseMessage;
        }

        /// <summary>
        /// 退订
        /// 实际上用户无法收到非订阅账号的消息，所以这里可以随便写。
        /// unsubscribe事件的意义在于及时删除网站应用中已经记录的OpenID绑定，消除冗余数据。并且关注用户流失的情况。
        /// </summary>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_UnsubscribeRequest(RequestMessageEvent_Unsubscribe requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "有空再来";
            return responseMessage;
        }

        /// <summary>
        /// 事件之扫码推事件(scancode_push)
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_ScancodePushRequest(RequestMessageEvent_Scancode_Push requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之扫码推事件";
            return responseMessage;
        }

        /// <summary>
        /// 事件之扫码推事件且弹出“消息接收中”提示框(scancode_waitmsg)
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_ScancodeWaitmsgRequest(RequestMessageEvent_Scancode_Waitmsg requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之扫码推事件且弹出“消息接收中”提示框";
            return responseMessage;
        }

        /// <summary>
        /// 事件之弹出拍照或者相册发图（pic_photo_or_album）
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_PicPhotoOrAlbumRequest(RequestMessageEvent_Pic_Photo_Or_Album requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之弹出拍照或者相册发图";
            return responseMessage;
        }

        /// <summary>
        /// 事件之弹出系统拍照发图(pic_sysphoto)
        /// 实际测试时发现微信并没有推送RequestMessageEvent_Pic_Sysphoto消息，只能接收到用户在微信中发送的图片消息。
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_PicSysphotoRequest(RequestMessageEvent_Pic_Sysphoto requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之弹出系统拍照发图";
            return responseMessage;
        }

        /// <summary>
        /// 事件之弹出微信相册发图器(pic_weixin)
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_PicWeixinRequest(RequestMessageEvent_Pic_Weixin requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之弹出微信相册发图器";
            return responseMessage;
        }

        /// <summary>
        /// 事件之弹出地理位置选择器（location_select）
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_LocationSelectRequest(RequestMessageEvent_Location_Select requestMessage)
        {
            var responseMessage = base.CreateResponseMessage<ResponseMessageText>();
            responseMessage.Content = "事件之弹出地理位置选择器";
            return responseMessage;
        }

        /// <summary>
        /// 事件之发送模板消息返回结果
        /// </summary>
        /// <param name="requestMessage"></param>
        /// <returns></returns>
        public override IResponseMessageBase OnEvent_TemplateSendJobFinishRequest(RequestMessageEvent_TemplateSendJobFinish requestMessage)
        {
            switch (requestMessage.Status)
            {
                case "success":
                    //发送成功
                    break;
                case "failed:user block":
                    //送达由于用户拒收（用户设置拒绝接收公众号消息）而失败
                    break;
                case "failed: system failed":
                    //送达由于其他原因失败
                    break;
                default:
                    throw new WeixinException("未知模板消息状态：" + requestMessage.Status);
            }

            //注意：此方法内不能再发送模板消息，否则会造成无限循环！

            //无需回复文字内容
            //return requestMessage
            //    .CreateResponseMessage<ResponseMessageNoResponse>();
            return null;
        }
    }
}

然后就行了，~~~~

微信信息处理 微信公众平台开发教程（1）

悦读

微信信息处理微信公众平台开发教程（1）