asp.net微信開發(fā)（高級群發(fā)文本）
更新時間：2015年11月19日 15:08:55 作者：將哥
這篇文章主要介紹了asp.net微信開發(fā)中有關(guān)高級群發(fā)文本的相關(guān)內(nèi)容，需要的朋友可以參考下
首先我們先來講解一下群發(fā)文本信息的過程，我個人開發(fā)程序是首先要有UI才能下手去寫代碼，界面如下，
看圖我們也可以看出首先我們要獲取該微信號本月還能群發(fā)幾條信息，關(guān)于怎么計算，就是群發(fā)成功一條信息，就在本地數(shù)據(jù)庫存儲一條信息，用來計算條數(shù)，（這個我相信都會），大于4條就不能發(fā)送（這里我已經(jīng)限制死了，因為服務(wù)號每月只能發(fā)送4條，多發(fā)送也沒用，用戶只能收到4條，除非使用預覽功能，挨個發(fā)送，但預覽功能也只能發(fā)送100次,或許可能使用開發(fā)者模式下群發(fā)信息可以多發(fā)送N次哦，因為我群發(fā)了兩次之后，再進入到微信公眾平臺官網(wǎng)后臺看到的居然還能群發(fā)4條，有點郁悶哦！），群發(fā)對象可選擇為全部用戶或分組用戶，和由于節(jié)省群發(fā)次數(shù)，這里我就不測試群發(fā)文字信息了，具體參考如下代碼：
綁定本月剩余群發(fā)條數(shù)
/// <summary>
/// 綁定本月剩余群發(fā)條數(shù)
/// </summary>
private void BindMassCount()
{
WxMassService wms = new WxMassService();
List<WxMassInfo> wxmaslist = wms.GetMonthMassCount();
//官方微信服務(wù)號每月只能群發(fā)4條信息，（訂閱號每天1條）多余信息，將不會成功推送，這里已經(jīng)設(shè)定為4
this.lbMassCounts.Text = (4 - int.Parse(wxmaslist.Count.ToString())).ToString();
if (wxmaslist.Count >= 4)
{
this.LinkBtnSubSend.Enabled = false;
this.LinkBtnSubSend.Attributes.Add("Onclick", "return confirm('群發(fā)信息已達上限！請下月初再試！')");
}
else
{
this.LinkBtnSubSend.Enabled = true;
this.LinkBtnSubSend.Attributes.Add("Onclick", "return confirm('您確定要群發(fā)此條信息？？')");
}
}
綁定分組列表
/// <summary>
/// 綁定分組列表
/// </summary>
private void BindGroupList()
{
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string jsonres = "";
string content = Cache["AllGroups_content"] as string;
if (content == null)
{
jsonres = "https://api.weixin.qq.com/cgi-bin/groups/get?access_token=" + Access_tokento;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(jsonres);
myRequest.Method = "GET";
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
content = reader.ReadToEnd();
reader.Close();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("AllGroups_content", content, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(content);
int groupsnum = jsonObj["groups"].Count();
this.DDLGroupList.Items.Clear();//清除
for (int i = 0; i < groupsnum; i++)
{
this.DDLGroupList.Items.Add(new ListItem(jsonObj["groups"][i]["name"].ToString() + "(" + jsonObj["groups"][i]["count"].ToString() + ")", jsonObj["groups"][i]["id"].ToString()));
}
}
/// <summary>
/// 選擇群發(fā)對象類型，顯示隱藏分組列表項
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void DDLMassType_SelectedIndexChanged(object sender, EventArgs e)
{
if (int.Parse(this.DDLMassType.SelectedValue.ToString()) > 0)
{
this.DDLGroupList.Visible = true;
}
else
{
this.DDLGroupList.Visible = false;
}
}
群發(fā)
/// <summary>
/// 群發(fā)
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinkBtnSubSend_Click(object sender, EventArgs e)
{
//根據(jù)單選按鈕判斷類型，發(fā)送
///如果選擇的是文本消息
if (this.RadioBtnList.SelectedValue.ToString().Equals("0"))
{
if (String.IsNullOrWhiteSpace(this.txtwenben.InnerText.ToString().Trim()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入您要群發(fā)文本內(nèi)容！');", true);
return;
}
if (this.txtwenben.InnerText.ToString().Trim().Length<10)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('文本內(nèi)容至少需要10個字符以上！');", true);
return;
}
WxMassService wms = new WxMassService();
List<WxMassInfo> wxmaslist = wms.GetMonthMassCount();
if (wxmaslist.Count >= 4)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('本月可群發(fā)消息數(shù)量已達上限！');", true);
return;
}
else
{
//如何群發(fā)類型為全部用戶，根據(jù)openID列表群發(fā)給全部用戶，訂閱號不可用，服務(wù)號認證后可用
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
StringBuilder sbs = new StringBuilder();
sbs.Append(GetAllUserOpenIDList());
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群發(fā)POST數(shù)據(jù)示例如下：
// {
// "touser":[
// "OPENID1",
// "OPENID2"
// ],
// "msgtype": "text",
// "text": { "content": "hello from boxer."}
//}
string postData = "{\"touser\":[" + sbs.ToString() +
"],\"msgtype\":\"text\",\"text\":{\"content\":\"" + this.txtwenben.InnerText.ToString() +
"\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
//群發(fā)成功后，保存記錄
WxMassInfo wmi = new WxMassInfo();
wmi.ImageUrl = "";
wmi.type = "文本";
wmi.contents = this.txtwenben.InnerText.ToString().Trim();
wmi.title = this.txtwenben.InnerText.ToString().Substring(0, 10) + "...";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。?！數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。?！數(shù)據(jù)保存失??！');", true);
return;
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)提交失?。?！');", true);
return;
}
}
else
{
string group_id = this.DDLGroupList.SelectedValue.ToString();
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群發(fā)POST數(shù)據(jù)示例如下：
// {
// "filter":{
// "is_to_all":false
// "group_id":"2"
// },
// "text":{
// "content":"CONTENT"
// },
// "msgtype":"text"
//}
//}
string postData = "{\"filter\":{\"is_to_all\":\"false\"\"group_id\":\"" + group_id +
"\"},\"text\":{\"content\":\"" + this.txtwenben.InnerText.ToString() +
"\"},\"msgtype\":\"text\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
//群發(fā)成功后，保存記錄
WxMassInfo wmi = new WxMassInfo();
wmi.ImageUrl = "";
wmi.type = "文本";
wmi.contents = this.txtwenben.InnerText.ToString().Trim();
wmi.title = this.txtwenben.InnerText.ToString().Substring(0, 10) + "...";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功！??！數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。。?shù)據(jù)保存失??！');", true);
return;
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)提交失?。。?);", true);
return;
}
}
}
}
//如果選擇的是圖文消息
if (this.RadioBtnList.SelectedValue.ToString().Equals("1"))
{
if (String.IsNullOrWhiteSpace(this.lbtuwenmedai_id.Text.ToString().Trim()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請選擇或新建圖文素材再進行群發(fā)！');", true);
return;
}
WxMassService wms = new WxMassService();
List<WxMassInfo> wxmaslist = wms.GetMonthMassCount();
if (wxmaslist.Count >= 4)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('本月可群發(fā)消息數(shù)量已達上限！');", true);
return;
}
else
{
//如何群發(fā)類型為全部用戶，根據(jù)openID列表群發(fā)給全部用戶，訂閱號不可用，服務(wù)號認證后可用
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
StringBuilder sbs = new StringBuilder();
sbs.Append(GetAllUserOpenIDList());
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群發(fā)POST數(shù)據(jù)示例如下：
// {
// "touser":[
// "OPENID1",
// "OPENID2"
// ],
// "mpnews":{
// "media_id":"123dsdajkasd231jhksad"
// },
// "msgtype":"mpnews"
//}
string postData = "{\"touser\":[" + sbs.ToString() +
"],\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +
"\"},\"msgtype\":\"mpnews\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
Session["media_id"] = null;
WxMassInfo wmi = new WxMassInfo();
if (Session["wmninfo"] != null)
{
WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;
wmi.title = wmninfo.title.ToString();
wmi.contents = wmninfo.contents.ToString();
wmi.ImageUrl = wmninfo.ImageUrl.ToString();
wmi.type = "圖文";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功！！！數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。?！數(shù)據(jù)保存失??！');", true);
return;
}
}
else
{
wmi.title = "";
wmi.contents = "";
wmi.ImageUrl = "";
wmi.type = "圖文";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。?！圖文部分數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功！??！數(shù)據(jù)保存失敗！');", true);
return;
}
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)提交失敗?。?);", true);
return;
}
}
else
{
//根據(jù)分組進行群發(fā)，訂閱號和服務(wù)號認證后均可用
string group_id = this.DDLGroupList.SelectedValue.ToString();
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群發(fā)POST數(shù)據(jù)示例如下：
// {
// "filter":{
// "is_to_all":false
// "group_id":"2"
// },
// "mpnews":{
// "media_id":"123dsdajkasd231jhksad"
// },
// "msgtype":"mpnews"
//}
string postData = "{\"filter\":{\"is_to_all\":\"false\"\"group_id\":\""+group_id+
"\"},\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +
"\"},\"msgtype\":\"mpnews\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
Session["media_id"] = null;
WxMassInfo wmi = new WxMassInfo();
if (Session["wmninfo"] != null)
{
WxMpNewsInfo wmninfo = Session["wmninfo"] as WxMpNewsInfo;
wmi.title = wmninfo.title.ToString();
wmi.contents = wmninfo.contents.ToString();
wmi.ImageUrl = wmninfo.ImageUrl.ToString();
wmi.type = "圖文";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。?！數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。。?shù)據(jù)保存失敗！');", true);
return;
}
}
else
{
wmi.title = "";
wmi.contents = "";
wmi.ImageUrl = "";
wmi.type = "圖文";
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
wmi.massObject = this.DDLMassType.SelectedItem.Text.ToString();
}
else
{
wmi.massObject = this.DDLGroupList.SelectedItem.Text.ToString();
}
wmi.massStatus = "成功";//群發(fā)成功之后返回的狀態(tài)碼
wmi.massMessageID = jsonObj["msg_id"].ToString();//群發(fā)成功之后返回的消息ID
wmi.massDate = System.DateTime.Now.ToString();
int num = wms.AddWxMassInfo(wmi);
if (num > 0)
{
Session["wmninfo"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功！！！圖文部分數(shù)據(jù)已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)已提交成功?。。?shù)據(jù)保存失?。?);", true);
return;
}
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群發(fā)任務(wù)提交失敗??！');", true);
return;
}
}
}
}
}
發(fā)送前預覽
/// <summary>
/// 發(fā)送前預覽
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
protected void LinkBtnSendPreview_Click(object sender, EventArgs e)
{
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string posturl = "https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=" + Access_tokento;
///如果選擇的是文本消息
if (this.RadioBtnList.SelectedValue.ToString().Equals("0"))
{
if (String.IsNullOrWhiteSpace(this.txtwenben.InnerText.ToString().Trim()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入您要發(fā)送預覽的文本內(nèi)容！');", true);
return;
}
if (this.txttoUserName.Value.ToString().Trim().Equals("請輸入用戶微信號"))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入接收消息的用戶微信號！');", true);
return;
}
//文本消息的json數(shù)據(jù){
// "touser":"OPENID", 可改為對微信號預覽，例如towxname：zhangsan
// "text":{
// "content":"CONTENT"
// },
// "msgtype":"text"
//}
string postData = "{\"towxname\":\"" + this.txttoUserName.Value.ToString() +
"\",\"text\":{\"content\":\"" + this.txtwenben.InnerText.ToString() +
"\"},\"msgtype\":\"text\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('發(fā)送預覽成功！！');", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('發(fā)送預覽失敗??！');", true);
return;
}
}
//如果選擇的是圖文消息
if (this.RadioBtnList.SelectedValue.ToString().Equals("1"))
{
if(String.IsNullOrWhiteSpace(this.lbtuwenmedai_id.Text.ToString().Trim()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請選擇要預覽的圖文素材！');", true);
return;
}
if (this.txttoUserName.Value.ToString().Trim().Equals("請輸入用戶微信號"))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('請輸入接收消息的用戶微信號！');", true);
return;
}
//圖文消息的json數(shù)據(jù){
// "touser":"OPENID", 可改為對微信號預覽，例如towxname：zhangsan
// "mpnews":{
// "media_id":"123dsdajkasd231jhksad"
// },
// "msgtype":"mpnews"
//}
string postData = "{\"towxname\":\"" + this.txttoUserName.Value.ToString() +
"\",\"mpnews\":{\"media_id\":\"" + this.lbtuwenmedai_id.Text.ToString() +
"\"},\"msgtype\":\"mpnews\"}";
string tuwenres = wxs.GetPage(posturl, postData);
//使用前需藥引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(tuwenres);
if (jsonObj["errcode"].ToString().Equals("0"))
{
Session["media_id"] = null;
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('發(fā)送預覽成功！！');", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('發(fā)送預覽失?。。?);", true);
return;
}
}
}
關(guān)鍵部分，獲取全部用戶的openID并串聯(lián)成字符串：
/// <summary>
/// 獲取所有微信用戶的OpenID
/// </summary>
/// <returns></returns>
protected string GetAllUserOpenIDList()
{
StringBuilder sb = new StringBuilder();
WeiXinServer wxs = new WeiXinServer();
///從緩存讀取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果為空，重新獲取
Access_token = wxs.GetAccessToken();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("Access_token", Access_token, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
string Access_tokento = Access_token.Substring(17, Access_token.Length - 37);
string jsonres = "";
string content = Cache["AllUserOpenList_content"] as string;
if (content == null)
{
jsonres = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=" + Access_tokento;
HttpWebRequest myRequest = (HttpWebRequest)WebRequest.Create(jsonres);
myRequest.Method = "GET";
HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
content = reader.ReadToEnd();
reader.Close();
//設(shè)置緩存的數(shù)據(jù)7000秒后過期
Cache.Insert("AllUserOpenList_content", content, null, DateTime.Now.AddSeconds(7000), System.Web.Caching.Cache.NoSlidingExpiration);
}
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(content);
if (jsonObj.ToString().Contains("count"))
{
int totalnum = int.Parse(jsonObj["count"].ToString());
for (int i = 0; i < totalnum; i++)
{
sb.Append('"');
sb.Append(jsonObj["data"]["openid"][i].ToString());
sb.Append('"');
sb.Append(",");
}
}
return sb.Remove(sb.ToString().LastIndexOf(","),1).ToString();
}
本文已被整理到了《ASP.NET微信開發(fā)教程匯總》，歡迎大家學習閱讀。
至此結(jié)束，下一章將繼續(xù)講解群發(fā)圖文信息，因群發(fā)圖文信息之前，需要先上傳圖文信息所需的素材，獲取media_id，所以本章不做介紹，下一章將介紹新建單圖文信息并群發(fā)，希望大家喜歡。
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