.net微信公众号开发——群发消息
作者:王先荣
本文将介绍微信公众号开发中用于群发消息的类MassMessage,包括:(1)MassMessage类;(2)群发;(3)删除;(4)预览;(5)查询发送状态;(6)接收推送群发结果事件。
源代码地址:http://git.oschina.net/xrwang2/xrwang.weixin.PublicAccount/tree/master/PublicAccount/MassMessage
演示地址:http://www.xrwang.net/Example/MassMessage.aspx
1 MassMessage类
MassMessage静态类封装了群发消息相关的方法,如下表:
作用 | 方法名 |
群发 | Send |
删除 | Delete |
预览 | Preview |
查询发送状态 | GetStatus |
2 群发
公众号可以按用户分组群发消息,也可以按用户的OpenId列表来群发群发消息。
2.1 按用户分组群发消息
方法定义如下:
/// <summary> /// 根据分组群发消息 /// </summary> /// <param name="userName">公众号</param> /// <param name="isToAll">是否群发给所有用户</param> /// <param name="groupId">如果群发给所有用户,忽略该参数;否则群发给该组中的用户</param> /// <param name="messageType">群发消息类型</param> /// <param name="mediaIdOrContent">多媒体id或者文本内容</param> /// <param name="errorMessage">返回发送是否成功</param> /// <returns>如果发送成功,返回消息ID;否则,返回-1。</returns> public static long Send(string userName, bool isToAll, string groupId, MassMessageTypeEnum messageType, string mediaIdOrContent, out ErrorMessage errorMessage)
使用示例如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/// <summary> /// 按分组群发消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnSendToGroup_Click(object sender, EventArgs e) { if (rblGroup.SelectedIndex >= 0) { string userName = lbPublicAccount.SelectedValue; ErrorMessage errorMessage; bool isToAll = string.IsNullOrWhiteSpace(rblGroup.SelectedValue); string groupId = isToAll ? "" : rblGroup.SelectedValue; string content = txtContent.Text; long msgId = MassMessage.Send(userName, isToAll, groupId, MassMessageTypeEnum.text, content, out errorMessage); if (errorMessage.IsSuccess) { ltrMessage.Text = "群发消息成功。"; rblMassMessage.Items.Add(new ListItem(string.Format("id:{0},text:{1}", msgId, content), msgId.ToString())); } else ltrMessage.Text = string.Format("群发消息失败。{0}", errorMessage); } }
2.2 按OpenId列表群发
方法定义如下:
/// <summary> /// 根据OpenId列表群发消息 /// </summary> /// <param name="userName">公众号</param> /// <param name="tousers">OpenId列表</param> /// <param name="messageType">群发消息类型</param> /// <param name="mediaIdOrContent">多媒体id或者文本内容</param> /// <param name="errorMessage">返回发送是否成功</param> /// <returns>如果发送成功,返回消息ID;否则,返回-1。</returns> public static long Send(string userName, IEnumerable<string> tousers, MassMessageTypeEnum messageType, string mediaIdOrContent, out ErrorMessage errorMessage)
使用示例如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/// <summary> /// 按用户群发消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnSendToUsers_Click(object sender, EventArgs e) { if (cblUser.SelectedIndex >= 0) { string userName = lbPublicAccount.SelectedValue; ErrorMessage errorMessage; List<string> openIds = new List<string>(); foreach (ListItem item in cblUser.Items) { if (item.Selected) openIds.Add(item.Value); } string content = txtContent.Text; long msgId = MassMessage.Send(userName, openIds, MassMessageTypeEnum.text, content, out errorMessage); if (errorMessage.IsSuccess) { ltrMessage.Text = "群发消息成功。"; rblMassMessage.Items.Add(new ListItem(string.Format("id:{0},text:{1}", msgId, content), msgId.ToString())); } else ltrMessage.Text = string.Format("群发消息失败。{0}", errorMessage); } }
3 删除群发
删除已群发消息的方法定义如下:
/// <summary> /// 删除群发消息。 /// 注:只能删除图文消息和视频消息。 /// </summary> /// <param name="userName">公众号</param> /// <param name="messageId">消息id</param> /// <returns>返回删除是否成功</returns> public static ErrorMessage Delete(string userName, long messageId)
使用示例如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/// <summary> /// 删除群发消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnDelete_Click(object sender, EventArgs e) { if (rblMassMessage.SelectedIndex >= 0) { string userName = lbPublicAccount.SelectedValue; long msgId = long.Parse(rblMassMessage.SelectedValue); ErrorMessage errorMessage = MassMessage.Delete(userName, msgId); if (errorMessage.IsSuccess) { ltrMessage.Text = "删除消息成功。"; rblMassMessage.Items.Remove(rblMassMessage.SelectedItem); } else ltrMessage.Text = string.Format("删除消息失败。{0}", errorMessage); } }
4 预览群发
预览群发消息的方法定义如下:
/// <summary> /// 预览群发消息 /// </summary> /// <param name="userName">公众号</param> /// <param name="touser">OpenId</param> /// <param name="messageType">群发消息类型</param> /// <param name="mediaIdOrContent">多媒体id或者文本内容</param> /// <param name="errorMessage">返回发送是否成功</param> /// <returns>如果发送成功,返回消息ID;否则,返回-1。</returns> public static long Preview(string userName, string touser, MassMessageTypeEnum messageType, string mediaIdOrContent, out ErrorMessage errorMessage)
使用示例如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/// <summary> /// 预览群发消息 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnPreview_Click(object sender, EventArgs e) { if (cblUser.SelectedIndex >= 0) { string userName = lbPublicAccount.SelectedValue; ErrorMessage errorMessage; string openId = cblUser.SelectedValue; string content = txtContent.Text; long msgId = MassMessage.Preview(userName, openId, MassMessageTypeEnum.text, content, out errorMessage); if (errorMessage.IsSuccess) { ltrMessage.Text = "预览消息成功。"; rblMassMessage.Items.Add(new ListItem(string.Format("id:{0},text:{1}", msgId, content), msgId.ToString())); } else ltrMessage.Text = string.Format("预览消息失败。{0}", errorMessage); } }
5 查询群发消息发送状态
查询群发消息发送状态的方法定义如下:
/// <summary> /// 查询群发消息的发送状态 /// </summary> /// <param name="userName">公众号</param> /// <param name="messageId">消息id</param> /// <param name="errorMessage">返回查询是否成功</param> /// <returns>返回消息是否发送成功</returns> public static bool GetStatus(string userName, long messageId, out ErrorMessage errorMessage)
使用示例如下:
![](https://images.cnblogs.com/OutliningIndicators/ContractedBlock.gif)
/// <summary> /// 查询群发消息状态 /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnGetStatus_Click(object sender, EventArgs e) { if (rblMassMessage.SelectedIndex >= 0) { string userName = lbPublicAccount.SelectedValue; ErrorMessage errorMessage; long msgId = long.Parse(rblMassMessage.SelectedValue); bool success = MassMessage.GetStatus(userName, msgId, out errorMessage); if (errorMessage.IsSuccess) ltrMessage.Text = string.Format("消息群发{0}。", success ? "成功" : "失败"); else ltrMessage.Text = string.Format("获取消息群发状态失败。{0}", errorMessage); } }
6 接收推送群发结果事件
群发消息之后,微信服务器会推送群发的结果到公众号的指定URL上,公众号服务器会接收到一条RequestMassSendJobFinishMessage类型的请求消息。
RequestMassSendJobFinishMessage类有以下只读属性:
/// <summary> /// 获取消息id /// </summary> public long MsgID { get; private set; } /// <summary> /// 获取群发消息的结果 /// </summary> public string Status { get; private set; } /// <summary> /// 获取用户总数 /// </summary> public int TotalCount { get; private set; } /// <summary> /// 获取过滤后待发送的用户数 /// </summary> public int FilterCount { get; private set; } /// <summary> /// 获取发送成功的用户数 /// </summary> public int SentCount { get; private set; } /// <summary> /// 获取发送失败的用户数 /// </summary> public int ErrorCount { get; private set; } /// <summary> /// 获取消息是否群发成功 /// </summary> public bool SendSuccess { get { return Status == sendSuccess; } } /// <summary> /// 获取发送失败的原因 /// </summary> public string ErrorReason { get { string reason = string.Empty; if (Status == sendSuccess) reason = "发送成功"; else if (Status == sendFailed) reason = "发送失败"; else if (errorDict.ContainsKey(Status)) reason = errorDict[Status]; return reason; } }
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