.NET Core 小程序开发零基础系列（1）——开发者启用并牵手成功

Senparc.Weixin.MP.MVC
Senparc.Weixin.WxOpen

  "SenparcWeixinSetting": {
    //微信全局
    "IsDebug": true,
    //公众号
    "Token": "#Token#",
    "EncodingAESKey": "#EncodingAESKey#",
    "WeixinAppId": "#WeixinAppId#",
    "WeixinAppSecret": "#WeixinAppSecret#",
    "Items": {
      "小程序1": {
        "WxOpenAppId": "#WxOpenAppId#",
        "WxOpenAppSecret": "#WxOpenAppSecret#",
        "WxOpenToken": "#WxOpenToken#",
        "WxOpenEncodingAESKey": "#WxOpenEncodingAESKey#"
      },
      "小程B": {
        "WxOpenAppId": "#WxOpenAppId#",
        "WxOpenAppSecret": "#WxOpenAppSecret#",
        "WxOpenToken": "#WxOpenToken#",
        "WxOpenEncodingAESKey": "#WxOpenEncodingAESKey#"
      }
    }
  }

services.AddSenparcGlobalServices(Configuration)
.AddSenparcWeixinServices(Configuration);

public void Configure(IApplicationBuilder app, IHostingEnvironment env,  IOptions<SenparcSetting> senparcSetting,  IOptions<SenparcWeixinSetting> senparcWeixinSetting)
        {
            if (env.IsDevelopment())
            {
                app.UseDeveloperExceptionPage();
                app.UseSwaggerUIV2();
            }
            app.UseStaticHttpContext();
            app.UseStaticFiles();
            app.UseMvc(routes =>
            {
                routes.MapRoute(
                    name: "default",
                    template: "{controller=Home}/{action=Index}/{id?}");
            });
         
            #region 公众号，小程序
            IRegisterService register = RegisterService.Start(env,  senparcSetting.Value).UseSenparcGlobal(false, null);
            register.UseSenparcWeixin(senparcWeixinSetting.Value,  senparcSetting.Value);
            //配置
            var bInfo = senparcWeixinSetting.Value.Items["appid"];
            AccessTokenContainer.RegisterAsync(bInfo.WxOpenAppId,  bInfo.WxOpenAppSecret, bInfo.WxOpenAppId);
            //公众号
             AccessTokenContainer.RegisterAsync(senparcWeixinSetting.Value.WeixinAppId,  senparcWeixinSetting.Value.WeixinAppSecret,  senparcWeixinSetting.Value.WeixinAppId);
            #endregion
        }

#region static
  /// <summary>
  /// 当前小程序的AppId
  /// </summary>
  public static readonly string AppId =  Senparc.Weixin.Config.SenparcWeixinSetting.Items["appid"].WxOpenAppId;
  /// <summary>
  ///
  /// </summary>
  public static readonly string Token =  Senparc.Weixin.Config.SenparcWeixinSetting.Items[AppId].WxOpenToken;
  /// <summary>
  ///
  /// </summary>
  public static readonly string EncodingAESKey =  Senparc.Weixin.Config.SenparcWeixinSetting.Items[AppId].WxOpenEncodingAESKey;
#endregion

  [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小程序后台的Url，请注意保持Token一致。1");
      }
  }

[HttpPost]
[ActionName("Index")]
public ActionResult Post(PostModel postModel)
{
    if (!CheckSignature.Check(postModel.Signature, postModel.Timestamp,  postModel.Nonce, Token))
    {
        return Content("参数错误！");
    }
    try
    {
        postModel.Token = Token;//根据自己后台的设置保持一致
        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（必须提供）
        var maxRecordCount = 10;
        var messageHandler = new  CustomWxOpenMessageHandler(Request.GetRequestMemoryStream(), postModel,  maxRecordCount);
      
        messageHandler.Execute();//执行微信处理过程（关键）
​
​
        var result = new FixWeixinBugWeixinResult(messageHandler);
        return result;
    }
    catch (Exception ex)
    {
        Logger.Info("异常消息：" + ex.Message);
        return Content("");
    }
}

public CustomWxOpenMessageHandler(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>.GlobalGlobalMessageContext.ExpireMinutes = 3。
    GlobalMessageContext.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 IResponseMessageBase  OnEvent_UserEnterTempSessionRequest(RequestMessageEvent_UserEnterTempSession  requestMessage)
{
    //进入客服
    var msg = @"欢迎您！这条消息来自服务器";
    Senparc.Weixin.WxOpen.AdvancedAPIs.CustomApi.SendText(appId, OpenId,  msg);
    return DefaultResponseMessage(requestMessage);
}
​

public override IResponseMessageBase OnImageRequest(RequestMessageImage  requestMessage)
{
    //发来图片，进行处理
    Task.Factory.StartNew(async () =>
    {
        await  Senparc.Weixin.WxOpen.AdvancedAPIs.CustomApi.SendTextAsync(appId, OpenId, "刚才您发送了这张图片：");
        await  Senparc.Weixin.WxOpen.AdvancedAPIs.CustomApi.SendImageAsync(appId, OpenId,  requestMessage.MediaId);
    });
    return DefaultResponseMessage(requestMessage);
}

public override IResponseMessageBase OnTextRequest(RequestMessageText  requestMessage)
{
   
    if (contentUpper == "1")
    {
        var uploadResult =  Senparc.Weixin.MP.AdvancedAPIs.MediaApi.UploadTemporaryMedia(appId,  UploadMediaFileType.image,  ServerUtility.ContentRootMapPath("~/wwwroot/imgs/fwh.jpg"));
        Senparc.Weixin.WxOpen.AdvancedAPIs.CustomApi.SendImage(appId,  OpenId, uploadResult.media_id);
    }
    else
    {
        var msg = "亲，回复“1”，关注服务号。";
        Senparc.Weixin.WxOpen.AdvancedAPIs.CustomApi.SendText(appId, OpenId,  msg);
       
    }
    return new SuccessResponseMessage();
}

public override IResponseMessageBase DefaultResponseMessage(IRequestMessageBase  requestMessage)
{
    return new SuccessResponseMessage();
​
}