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**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:指定为@all,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,多个接受者用‘|’分隔。当touser为@all时忽略本参数 /// </summary> public string toparty { get; set; } /// <summary> /// TagID列表,多个接受者用‘|’分隔。当touser为@all时忽略本参数 /// </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](http://qydev.weixin.qq.com/wiki/index.php?title=%E5%8F%91%E9%80%81%E6%8E%A5%E5%8F%A3%E8%AF%B4%E6%98%8E)