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asp.net微信开发（高级群发图文）
上一篇介绍了如何群发文本消息，本篇将介绍如何群发图文信息，上传图文信息所需的素材，界面如下：
我们先看从素材库中获取图文素材的代码，界面：
素材列表，我是使用的repeater控件，
前台代码如下：



后台代码如下：
///

/// 绑定图文素材列表
///

private void BindNewsSucaiList()
{
WeiXinServer wxs = new WeiXinServer();
string res = "";
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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 = "http://api.weixin.qq.com/cgi-bin/material/batchget_material?access_token=" + Access_tokento;
//POST数据例子： POST数据例子：{"type":TYPE,"offset":OFFSET,"count":COUNT}
string postData = "{\"type\":\"news\",\"offset\":\"0\",\"count\":\"20\"}";
res = wxs.GetPage(posturl, postData);
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(res);
int groupsnum = jsonObj["item"].Count();
List newssucaiitemlist = new List();
List WxNewsSuCaiItemlist = new List();
for (int i = 0; i < groupsnum; i++)
{
WxNewsSucaiIteminfo newssucaiitem = new WxNewsSucaiIteminfo();
newssucaiitem.media_id = jsonObj["item"][i]["media_id"].ToString();
newssucaiitem.update_time = jsonObj["item"][i]["update_time"].ToString();
newssucaiitem.total_count = jsonObj["total_count"].ToString();
newssucaiitem.item_count = jsonObj["item_count"].ToString();
newssucaiitemlist.Add(newssucaiitem);
int news_itemcount = jsonObj["item"][i]["content"]["news_item"].Count();
if (news_itemcount > 0)
{
for (int j = 0; j < news_itemcount; j++)
{
WxNewsSuCaiItemlistinfo wnscilinfo = new WxNewsSuCaiItemlistinfo();
wnscilinfo.title = jsonObj["item"][i]["content"]["news_item"][j]["title"].ToString();
wnscilinfo.thumb_media_id = jsonObj["item"][i]["content"]["news_item"][j]["thumb_media_id"].ToString();
wnscilinfo.show_cover_pic = int.Parse(jsonObj["item"][i]["content"]["news_item"][j]["show_cover_pic"].ToString());
wnscilinfo.author = jsonObj["item"][i]["content"]["news_item"][j]["author"].ToString();
wnscilinfo.digest = jsonObj["item"][i]["content"]["news_item"][j]["digest"].ToString();
wnscilinfo.content = jsonObj["item"][i]["content"]["news_item"][j]["content"].ToString();
wnscilinfo.url = jsonObj["item"][i]["content"]["news_item"][j]["url"].ToString();
wnscilinfo.content_source_url = jsonObj["item"][i]["content"]["news_item"][j]["content_source_url"].ToString();
wnscilinfo.media_id = newssucaiitem.media_id.ToString();
WxNewsSuCaiItemlist.Add(wnscilinfo);
}
}
}
Session["WxNewsSuCaiItemlist"] = WxNewsSuCaiItemlist;
this.Repeatersucailist.DataSource = newssucaiitemlist;
this.Repeatersucailist.DataBind();
}
再来看看，新建单图文信息界面：
新建单图文上传封面，删除封面的代码如下：
///

///
///

上传图片文件
///
///
protected void LinkBtnFileUploadImg_Click(object sender, EventArgs e)
{
if (this.FileUploadImg.HasFile)
{
string fileContentType = FileUploadImg.PostedFile.ContentType;
if (fileContentType == "image/bmp" || fileContentType == "image/gif" || fileContentType == "image/png" || fileContentType == "image/x-png" || fileContentType == "image/jpeg"
|| fileContentType == "image/pjpeg")
{
int fileSize = this.FileUploadImg.PostedFile.ContentLength;
if (fileSize <=2097152)
{
string fileName = this.FileUploadImg.PostedFile.FileName;
// 客户端文件路径
string filepath = FileUploadImg.PostedFile.FileName; //得到的是文件的完整路径,包括文件名，如：C:\Documents and Settings\Administrator\My Documents\My Pictures\20022775_m.jpg
//string filepath = FileUpload1.FileName; //得到上传的文件名20022775_m.jpg
string filename = filepath.Substring(filepath.LastIndexOf("\\") + 1);//20022775_m.jpg
string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg
this.ImgTuWen.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;
this.ImgTuWen2.Visible = true;
this.ImgTuWen2.ImageUrl = "~/WeiXinImg/" + FileUploadImg.FileName;
this.FileUploadImg.PostedFile.SaveAs(serverpath);//将上传的文件另存为
this.LinkBtnDeleteImg.Visible = true;
Session["fileNameimg"] = this.FileUploadImg.PostedFile.FileName;
//上传临时图片素材至微信服务器，3天后微信服务器会自动删除
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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);
//WebClient wx_upload = new WebClient();
//wx_upload.Credentials = CredentialCache.DefaultCredentials;
string url = string.Format("http://file.api.weixin.qq.com/cgi-bin/media/upload?access_token={0}&type={1}", Access_tokento, "image");
string result = HttpUploadFile(url, serverpath);
if (result.Contains("media_id"))
{
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(result);
Session["imgmedia_id"] = jsonObj["media_id"].ToString();
}
Response.Write("");
}
else
{
Response.Write("");
}
}
else
{
Response.Write("");
}
}
else
{
Response.Write("");
}
}
///

/// Http上传文件
///

public static string HttpUploadFile(string url, string path)
{
// 设置参数
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
string boundary = DateTime.Now.Ticks.ToString("X"); // 随机分隔线
request.ContentType = "multipart/form-data;charset=utf-8;boundary=" + boundary;
byte[] itemBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "\r\n");
byte[] endBoundaryBytes = Encoding.UTF8.GetBytes("\r\n--" + boundary + "--\r\n");
int pos = path.LastIndexOf("\\");
string fileName = path.Substring(pos + 1);
//请求头部信息
StringBuilder sbHeader = new StringBuilder(string.Format("Content-Disposition:form-data;name=\"file\";filename=\"{0}\"\r\nContent-Type:application/octet-stream\r\n\r\n", fileName));
byte[] postHeaderBytes = Encoding.UTF8.GetBytes(sbHeader.ToString());
FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read);
byte[] bArr = new byte[fs.Length];
fs.Read(bArr, 0, bArr.Length);
fs.Close();
Stream postStream = request.GetRequestStream();
postStream.Write(itemBoundaryBytes, 0, itemBoundaryBytes.Length);
postStream.Write(postHeaderBytes, 0, postHeaderBytes.Length);
postStream.Write(bArr, 0, bArr.Length);
postStream.Write(endBoundaryBytes, 0, endBoundaryBytes.Length);
postStream.Close();
//发送请求并获取相应回应数据
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
Stream instream = response.GetResponseStream();
StreamReader sr = new StreamReader(instream, Encoding.UTF8);
//返回结果网页（html）代码
string content = sr.ReadToEnd();
return content;
}
///

/// 删除图片
///

///
///
protected void LinkBtnDeleteImg_Click(object sender, EventArgs e)
{
string filename = Session["fileNameimg"].ToString();
if (!string.IsNullOrEmpty(filename))//确保picPath有值并且不为空。
{
string serverpath = Server.MapPath("~/WeiXinImg/") + filename;//取得文件在服务器上保存的位置C:\Inetpub\wwwroot\WebSite1\images\20022775_m.jpg
if (File.Exists(serverpath))
{
try
{
File.Delete(serverpath);
this.ImgTuWen.ImageUrl = "weixinimg/fengmiandefault.jpg";
this.ImgTuWen2.Visible = false;
this.ImgTuWen2.ImageUrl = "";
Session["fileNameimg"] = null;
this.LinkBtnDeleteImg.Visible = false;
}
catch(Exception ex)
{
//错误处理：
Response.Write(ex.Message.ToString());
}
}
}
}
新建单图文预览代码如下：
///

/// 预览图文消息
///

///
///
protected void LinkBtnSendPreview_Click(object sender, EventArgs e)
{
Session["media_id"] = null;
//非空验证
if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题！');", true);
this.txttuwen_title.Focus();
return;
}
if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);
this.ImgTuWen2.Focus();
return;
}
if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);
this.tbContent.Focus();
return;
}
//对各项进行赋值
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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);
//POST数据例子： POST数据例子：
//{
// "articles": [{
// "title": TITLE,
// "thumb_media_id": THUMB_MEDIA_ID,
// "author": AUTHOR,
// "digest": DIGEST,
// "show_cover_pic": SHOW_COVER_PIC(0 / 1),
// "content": CONTENT,
// "content_source_url": CONTENT_SOURCE_URL
// },
// //若新增的是多图文素材，则此处应还有几段articles结构
// ]
//}
string isshow_cover_pic = "";
if (this.CheckFengMianShow.Checked)
{
isshow_cover_pic = "1";
}
else
{
isshow_cover_pic = "0";
}
string description = NoHTML(this.tbContent.InnerText.ToString());
string postData = "{\"articles\":[{\"title\":\"" + this.txttuwen_title.Value.ToString() +
"\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() +
"\",\"author\":\"" + this.txttuwen_author.Value.ToString() +
"\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() +
"\",\"show_cover_pic\":\"" + isshow_cover_pic +
"\",\"content\":\"" + description +
"\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() +
"\"}]}";
string posturl = string.Format("http://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);
string jsonres = PostUrl(posturl, postData);
if (jsonres.Contains("media_id"))
{
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(jsonres);
if (this.txttoUserName.Value.ToString().Trim().Equals("请输入用户微信号"))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入接收消息的用户微信号！');", true);
return;
}
string posturls = "http://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token=" + Access_tokento;
//预览图文消息的json数据{
// "touser":"OPENID", 可改为对微信号预览，例如towxname：zhangsan
// "mpnews":{
// "media_id":"123dsdajkasd231jhksad"
// },
// "msgtype":"mpnews"
//}
string postDatas = "{\"towxname\":\"" + this.txttoUserName.Value.ToString() +
"\",\"mpnews\":{\"media_id\":\"" + jsonObj["media_id"].ToString() +
"\"},\"msgtype\":\"mpnews\"}";
string tuwenres = wxs.GetPage(posturls, postDatas);
//使用前需药引用Newtonsoft.json.dll文件
JObject jsonObjss = JObject.Parse(tuwenres);
if (jsonObjss["errcode"].ToString().Equals("0"))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览成功！！');", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('发送预览失败！！');", true);
return;
}
}
}
public static string NoHTML(string Htmlstring)
{
//删除脚本
Htmlstring = Regex.Replace(Htmlstring, @"]*?>.*?", "", RegexOptions.IgnoreCase);
//替换标签
Htmlstring = Htmlstring.Replace("\r\n", " ");
Htmlstring = Htmlstring.Replace("\"", "'");
Htmlstring = Htmlstring.Replace(" ", " ");
return Htmlstring;
}
单击确定按钮代码如下：
///

/// 确认选择
///

///
///
protected void LinkBtnSubSave_Click(object sender, EventArgs e)
{
Session["media_id"] = null;
//非空验证
if (String.IsNullOrWhiteSpace(this.txttuwen_title.Value.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入图文标题！');", true);
return;
}
if (this.ImgTuWen2.ImageUrl.ToString().Equals(""))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('必须上传一张图片！');", true);
return;
}
if (String.IsNullOrWhiteSpace(this.tbContent.InnerText.ToString()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请输入正文内容！');", true);
return;
}
//对各项进行赋值
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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);
//POST数据例子： POST数据例子：
//{
// "articles": [{
// "title": TITLE,
// "thumb_media_id": THUMB_MEDIA_ID,
// "author": AUTHOR,
// "digest": DIGEST,
// "show_cover_pic": SHOW_COVER_PIC(0 / 1),
// "content": CONTENT,
// "content_source_url": CONTENT_SOURCE_URL
// },
// //若新增的是多图文素材，则此处应还有几段articles结构
// ]
//}
string isshow_cover_pic = "";
if (this.CheckFengMianShow.Checked)
{
isshow_cover_pic = "1";
}
else
{
isshow_cover_pic = "0";
}
string description = NoHTML(this.tbContent.InnerText.ToString());
string postData = "{\"articles\":[{\"title\":\"" + this.txttuwen_title.Value.ToString() +
"\",\"thumb_media_id\":\"" + Session["imgmedia_id"].ToString() +
"\",\"author\":\"" + this.txttuwen_author.Value.ToString() +
"\",\"digest\":\"" + this.txtzhaiyao.InnerText.ToString() +
"\",\"show_cover_pic\":\"" + isshow_cover_pic +
"\",\"content\":\"" + description +
"\",\"content_source_url\":\"" + this.txtYuanWenUrl.Text.ToString() +
"\"}]}";
string posturl = string.Format("http://api.weixin.qq.com/cgi-bin/media/uploadnews?access_token={0}", Access_tokento);
string jsonres = PostUrl(posturl, postData);
if (jsonres.Contains("media_id"))
{
//使用前需要引用Newtonsoft.json.dll文件
JObject jsonObj = JObject.Parse(jsonres);
WxMpNewsInfo wmninfo = new WxMpNewsInfo();
wmninfo.title = this.txttuwen_title.Value.ToString();
wmninfo.contents = description.ToString();
wmninfo.ImageUrl = this.ImgTuWen.ImageUrl.ToString();
Session["wmninfo"] = wmninfo;
Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());
}
}
///

/// 请求Url，发送数据
///

public static string PostUrl(string url, string postData)
{
byte[] data = Encoding.UTF8.GetBytes(postData);
// 设置参数
HttpWebRequest request = WebRequest.Create(url) as HttpWebRequest;
CookieContainer cookieContainer = new CookieContainer();
request.CookieContainer = cookieContainer;
request.AllowAutoRedirect = true;
request.Method = "POST";
request.ContentType = "application/x-www-form-urlencoded";
request.ContentLength = data.Length;
Stream outstream = request.GetRequestStream();
outstream.Write(data, 0, data.Length);
outstream.Close();
//发送请求并获取相应回应数据
HttpWebResponse response = request.GetResponse() as HttpWebResponse;
//直到request.GetResponse()程序才开始向目标网页发送Post请求
Stream instream = response.GetResponseStream();
StreamReader sr = new StreamReader(instream, Encoding.UTF8);
//返回结果网页（html）代码
string content = sr.ReadToEnd();
return content;
}
Response.Redirect("WxMassManage.aspx?media_id=" + jsonObj["media_id"].ToString());
这句代码就是将上传图文后得到的media_Id参数传送到群发界面，群发界面接收代码如下：
protected void Page_Load(object sender, EventArgs e)
{
if(!Page.IsPostBack)
{
BindNewsSucaiList();//绑定素材列表
BindGroupList();//绑定分组列表
BindMassCount();//绑定本月已群发条数
this.DataBind();
if (Request.QueryString["media_id"] != null)
{
this.RadioBtnList.SelectedValue = "1";
this.showExpress.Visible = false;
this.txtwenben.Visible = false;
this.tuwen.Visible = true;
this.tuwenxuan.Visible = false;
this.tuwenjian.Visible = false;
this.lbtuwenmedai_id.Visible = true;
this.lbtuwenmedai_id.Text = Request.QueryString["media_id"].ToString();
this.LinkBtndeletetuwen.Visible = true;
this.Imageyixuan.Visible = true;
}
}
}
最终界面如下：
我这里只接收了一个media_id值，相对于做的简单，直接将值赋值给了一个label用于显示，也可以做成像官网那样，确定选择后，按照图文样式显示.
最后一步：群发按钮代码：其实上一章已经将代码贴出去了，这一章，我就单独贴一遍吧。
///

/// 群发
///

///
///
protected void LinkBtnSubSend_Click(object sender, EventArgs e)
{
//根据单选按钮判断类型，//如果选择的是图文消息
if (this.RadioBtnList.SelectedValue.ToString().Equals("1"))
{
if (String.IsNullOrWhiteSpace(this.lbtuwenmedai_id.Text.ToString().Trim()))
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('请选择或新建图文素材再进行群发！');", true);
return;
}
WxMassService wms = new WxMassService();
List wxmaslist = wms.GetMonthMassCount();
if (wxmaslist.Count >= 4)
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('本月可群发消息数量已达上限！');", true);
return;
}
else
{
//如何群发类型为全部用户，根据openID列表群发给全部用户，订阅号不可用，服务号认证后可用
if (this.DDLMassType.SelectedValue.ToString().Equals("0"))
{
StringBuilder sbs = new StringBuilder();
sbs.Append(GetAllUserOpenIDList());
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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 = "http://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群发POST数据示例如下：
// {
// "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);
//使用前需药引用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 = "图文";
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";//群发成功之后返回的状态码
wmi.massMessageID = jsonObj["msg_id"].ToString();//群发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('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
return;
}
}
else
{
wmi.title = "";
wmi.contents = "";
wmi.ImageUrl = "";
wmi.type = "图文";
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";//群发成功之后返回的状态码
wmi.massMessageID = jsonObj["msg_id"].ToString();//群发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('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
return;
}
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);
return;
}
}
else
{
//根据分组进行群发，订阅号和服务号认证后均可用
string group_id = this.DDLGroupList.SelectedValue.ToString();
WeiXinServer wxs = new WeiXinServer();
///从缓存读取accesstoken
string Access_token = Cache["Access_token"] as string;
if (Access_token == null)
{
//如果为空，重新获取
Access_token = wxs.GetAccessToken();
//设置缓存的数据7000秒后过期
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 = "http://api.weixin.qq.com/cgi-bin/message/mass/send?access_token=" + Access_tokento;
///群发POST数据示例如下：
// {
// "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);
//使用前需药引用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 = "图文";
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";//群发成功之后返回的状态码
wmi.massMessageID = jsonObj["msg_id"].ToString();//群发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('群发任务已提交成功！！！数据已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
return;
}
}
else
{
wmi.title = "";
wmi.contents = "";
wmi.ImageUrl = "";
wmi.type = "图文";
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";//群发成功之后返回的状态码
wmi.massMessageID = jsonObj["msg_id"].ToString();//群发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('群发任务已提交成功！！！图文部分数据已保存！');location='WxMassManage.aspx';", true);
return;
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务已提交成功！！！数据保存失败！');", true);
return;
}
}
}
else
{
ScriptManager.RegisterClientScriptBlock(this.Page, this.GetType(), "", "alert('群发任务提交失败！！');", true);
return;
}
}
}
}
}
为什么叫群发任务提交成功或失败，因为将信息提交给微信服务器，微信服务器还需审核，审核过程中也有可能审核不通过，不给于群发，所以我起名叫这个，嘿嘿，随便你们怎么起。。。。。
至此群发图文信息功能，已完毕，最后是群发记录，还记得上一章提到的群发成功之后要在本地保存记录吗，保存记录的原因，用于计算当月已群发几条信息，另外还有一个功能就是，群发成功之后，会得到一个消息msgid,根据这个ID可以对已经发送成功的信息进行撤销（删除）操作，关于撤销操作：微信官方规定，对群发成功的图文和视频消息，半个小时之内可以进行删除操作，其他消息一经群发成功概不支持此操作。截图如下：
该类用于存储已群发记录的实体类
///

/// 微信已群发消息实体类，用于记录已群发消息的条数，信息实体
///

public class WxMassInfo
{
public int WxMassNo { get; set; }//群发消息编号，数据库自增列
public string title { get; set; }//图文消息的标题，若消息是文本类型，此项不显示
public string ImageUrl { get; set; }//图片地址，若消息是文本类型，此项不显示
public string type { get; set; }//消息的类型，文本，图文，图片，语音，视频
public string contents { get; set; }//文本消息的内容，图文消息的正文
public string massObject { get; set; }//群发对象
public string massStatus { get; set; }//群发状态
public string massMessageID{ get; set; }//群发成功后返回的消息ID
public string massDate { get; set; }//群发日期时间
}
本文已被整理到了《ASP.NET微信开发教程汇总》，欢迎大家学习阅读。
以上就是本文的全部内容，希望对大家的学习有所帮助。