public override IResponseMessage OnEvent_SubscribeRequest(SubscribeEventMessage requestMessage)
 {
     using (var manager = new ArticleManager())
     {
         return manager.GetWelcome();
     }
 }
 /// <summary>
 /// Event事件类型请求之subscribe
 /// </summary>
 public override IResponseMessage OnEvent_SubscribeRequest(SubscribeEventMessage requestMessage)
 {
     var builder = new StringBuilder();
     builder
         .AppendLine("欢迎关注 RabbitHub:")
         .AppendLine("发送 \"news\" 文本,系统将会发送一条图文消息。")
         .AppendLine("发送 \"music\" 文本,系统将会发送一条音乐消息。")
         .AppendLine("发送任意图片,系统将会发送一条图片消息。")
         .AppendLine("发送任意视频,系统将会发送一条视频消息。")
         .AppendLine("发送任意语音,系统将会发送一条语音消息。")
         .AppendLine("发送其它文本,系统将会回复一样的内容。");
     return new ResponseMessageText(builder.ToString());
 }
 /// <summary>
 /// Event事件类型请求之subscribe
 /// </summary>
 public virtual IResponseMessage OnEvent_SubscribeRequest(SubscribeEventMessage requestMessage)
 {
     return null;
 }