.net微信公众号开发——群发消息
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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:
/// <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:
/// <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:
/// <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:
/// <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:
/// <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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