微信企业号开发:主动发送消息详解手机开发

主企业号主动发送消息，也就是企业号主动推送的消息，适合于企业的通知，通告等。因此如果公司有通知，要求通知到所有员工，就应该使用主动发送消息。

格式是json格式，而且微信很灵活，当touser，toparty，totag的json值是null时，微信服务器主动忽略了。原来还担心，如果是null，在生成json格式时如何忽略掉是null的字段。

核心基本类：

public class MsgBase 
    { 
       public MsgBase() 
       { 
           this.safe = "0"; //表示是否是保密消息，0表示否，1表示是，默认0 
       } 
        /// <summary> 
        /// UserID列表（消息接收者，多个接收者用‘|’分隔）。特殊情况：[email protected]，则向关注该企业应用的全部成员发送 
        /// </summary> 
        public string touser { get; set; } 
 
        /// <summary> 
        /// PartyID列表，[email protected]数 
        /// </summary> 
        public string toparty { get; set; } 
 
        /// <summary> 
        /// TagID列表，[email protected]数 
        /// </summary> 
        public string totag { get; set; } 
        /// <summary> 
        /// 消息类型 
        /// </summary> 
        public string msgtype { get; set; } 
        /// <summary> 
        /// 企业应用的id，整型。可在应用的设置页面查看 
        /// </summary> 
        public int  agentid { get; set; } 
 
        /// <summary> 
        /// 表示是否是保密消息，0表示否，1表示是，默认0 
        /// </summary>      
        public string safe { get; set; } 
    }

public static class MsgType 
    { 
      public enum MsgBaseEnum 
      { 
          Text = 1, 
          image = 2, 
          voice = 3, 
          video = 4, 
          file = 5, 
          news = 6, 
          mpnews =7 
        
      }; 
      public static string GetMsgTypeText(MsgBaseEnum type) 
      { 
          string text = ""; 
          switch(type) 
          { 
              case MsgBaseEnum.Text: 
                  text = "text"; 
                  break; 
              case MsgBaseEnum.image: 
                  text = "image"; 
                  break; 
              case MsgBaseEnum.voice: 
                  text = "voice"; 
                  break; 
              case MsgBaseEnum.video: 
                  text = "video"; 
                  break; 
              case MsgBaseEnum.file: 
                  text = "file"; 
                  break; 
              case MsgBaseEnum.news: 
                  text = "news"; 
                  break; 
              case MsgBaseEnum.mpnews: 
                  text = "mpnews"; 
                  break; 
              default: 
                  throw new Exception("type=" + type + "，此类型的消息没有实现"); 
           
          } 
          return text;       
      } 
    }

文字类型的消息

 public class TextMsg : MsgBase 
    { 
        public TextMsg(string content) 
        { 
            this.text = new TextMsgContent(content); 
            this.msgtype = MsgType.GetMsgTypeText(MsgType.MsgBaseEnum.Text); 
        } 
        public TextMsgContent text { get; set; } 
    } 
    public class TextMsgContent 
    { 
        public TextMsgContent(string content) 
        { 
            this.content = content; 
        } 
        public string content { get; set; } 
    }

发送消息

 public static class BLLMsg 
    { 
 
       public static bool SendMessage(MsgBase data) 
       {          
           string urlFormat = "https://qyapi.weixin.qq.com/cgi-bin/message/send?access_token={0}"; 
           string accessToken = BLLAccessToken.GetAccessToken(); 
           var url = string.Format(urlFormat, accessToken); 
           WebUtils ut = new WebUtils(); 
           var postData = Tools.ToJsonString<MsgBase>(data); 
           //数据不用加密发送   
           LogInfo.Info("发送消息: " + postData); 
           string sendResult = ut.DoPost(url, postData); 
           SendMsgResult tempAccessTokenjson = Tools.JsonStringToObj<SendMsgResult>(sendResult); 
           if (tempAccessTokenjson.HasError()) 
           { 
               LogInfo.Error("发送消息错误: " + Tools.ToJsonString<SendMsgResult>(tempAccessTokenjson)); 
               return false; 
           } 
          
 
           return true; 
       } 
    }

测试代码：

 private void button9_Click(object sender, EventArgs e) 
        { 
            TextMsg data = new TextMsg("测试发送文字消息给整个企业" + DateTime.Now); 
            data.agentid = 7; 
            data.safe = "0"; 
            data.toparty = "1";          
            BLLMsg.SendMessage(data); 
        } 
 
        private void button11_Click(object sender, EventArgs e) 
        { 
            TextMsg data = new TextMsg("测试发送文字消息给医疗部" + DateTime.Now); 
            data.agentid = 7; 
            data.safe = "0"; 
            data.toparty = "2";          
            BLLMsg.SendMessage(data); 
        } 
 
        private void button10_Click(object sender, EventArgs e) 
        { 
            TextMsg data = new TextMsg("测试发送文字消息给所有用户" + DateTime.Now); 
            data.agentid = 7; 
            data.safe = "0";        
            data.touser = "@all"; 
            BLLMsg.SendMessage(data); 
        } 
        private void button1_Click(object sender, EventArgs e) 
        { 
 
            TextMsg data = new TextMsg("单用户文字消息" + DateTime.Now); 
            data.agentid = 7; 
            data.safe = "0";           
            data.touser = "iaodong"; 
            BLLMsg.SendMessage(data); 
        }

主动发送消息官方文档