这篇文章主要介绍了asp.net微信开发中有关高级群发图文的相关内容，需要的朋友可以参考下
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：
<!--弹出选择素材窗口-->
<p id="shownewgroup">
<p class="closelogin" style="height:40px; background-color:#ddd9ff; line-height:40px;"><span style="float:left; color:#000; font-size:14px; text-indent:5px;">选择素材</span>
<span style="float:left;margin-left:20px;"><a href="wxnewtuwen.aspx" style="color:red;" onclick="hrefurl();" class="hrefurl">新建图文素材</a></span>
<a class="closeloginpage"><img src="images/close1.png" alt="" /></a> </p>
<p style="height:455px; width:100%;">
<asp:updatepanel id="updatepanel2" runat="server">
<contenttemplate>
<p style="width:100%; height:35px; margin:10px;"><asp:linkbutton id="linkbtnselect" runat="server" onclick="linkbtnselect_click" ><p style="background-image:url('images/buttonbg.png'); width:111px; height:35px; float:left; line-height:35px; font-weight:bold; text-align:center;color:#fff;">确认选择</p></asp:linkbutton>
<span style="float:left;margin-left:20px;"><asp:linkbutton id="linkbtnrefresh" cssclass="linkbtnrefresh" runat="server" onclick="linkbtnrefresh_click"><p style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">刷新</p></asp:linkbutton></span>
<span style="float:left;margin-left:20px;"><asp:linkbutton id="linkbtndelete" cssclass="linkbtnrefresh" runat="server" onclick="linkbtndelete_click"><p style="background-image:url('images/buttonbg.png'); width:111px; height:35px; line-height:35px; font-weight:bold; text-align:center;color:#fff;">删除素材</p></asp:linkbutton></span>
</p>
<p style="word-wrap:break-word;" id="lbnewssucai" runat="server">
<asp:repeater id="repeatersucailist" runat="server" onitemdatabound="repeatersucailist_itemdatabound">
<itemtemplate>
<table style="width:100%; border-top:1px solid #edc9df; border-collapse:collapse; font-size:12px;" >
<tr>
<td style="width:100px;"><asp:image id="imageurl" cssclass="fenmianstyle2" runat="server" /></td>
<td style="text-align:left; width:470px; ">
<asp:repeater id="repeatersucailist2" runat="server">
<itemtemplate>
<ul style="margin:0px;padding:0px;">
<li><%# eval("title") %></li>
</ul>
</itemtemplate>
</asp:repeater>
</td>
<td style="width:130px;">
<asp:label id="lbupate_time" runat="server" text="label"></asp:label>
</td>
<td style="width:50px; text-align:center;">
<asp:checkbox id="checkin" runat="server" />
<asp:label id="lbmedia_id" runat="server" visible="false" text=""></asp:label>
</td>
</tr>
</table>
</itemtemplate>
</asp:repeater>
<p style="font-size:14px; height:30px; line-height:30px; text-indent:10px; border-top:1px solid #ced9df;">
<span style="float:left;">本类型素材总数量为：</span><span style="float:left; color:red;"><asp:label id="lbtotal_count" runat="server" text="0"></asp:label></span>
<span style="float:left; margin-left:20px;">本次获取的素材数量为：</span><span style="float:left; color:red;"><asp:label id="lbitem_count" runat="server" text="0"></asp:label></span>
</p>
</p>
</contenttemplate>
</asp:updatepanel>
</p>
</p>
<p id="shownewgroupzhezhaoceng"></p>
后台代码如下：
/// <summary>
/// 绑定图文素材列表
/// </summary>
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 = "https://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<wxnewssucaiiteminfo> newssucaiitemlist = new list<wxnewssucaiiteminfo>();
list<wxnewssucaiitemlistinfo> wxnewssucaiitemlist = new list<wxnewssucaiitemlistinfo>();
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：
/// <summary>
///
/// </summary>上传图片文件
/// <param name="sender"></param>
/// <param name="e"></param>
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("<script>alert('上传图片成功！')</script>");
}
else
{
response.write("<script>alert('上传文件不能大于2m！')</script>");
}
}
else
{
response.write("<script>alert('只支持bmp,gif,png,jpg格式的图片！')</script>");
}
}
else
{
response.write("<script>alert('请选择图片！')</script>");
}
}
/// <summary>
/// http上传文件
/// </summary>
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;
}
/// <summary>
/// 删除图片
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
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：
/// <summary>
/// 预览图文消息
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
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("https://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 = "https://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, @"<script[^>]*?>.*?</script>", "", 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：
/// <summary>
/// 确认选择
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
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("https://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());
}
}
/// <summary>
/// 请求url，发送数据
/// </summary>
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。
/// <summary>
/// 群发
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
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<wxmassinfo> 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 = "https://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 = "https://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
/// <summary>
/// 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
/// </summary>
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
}
以上就是本文的全部内容，希望对大家的学习有所帮助。
更多asp.net微信开发（高级群发图文）。