微信开发 ---- 群发接口

官网：https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1481187827_i0l21      

2018.03.15：GitHub下载代码

订阅号每天可以发一条，服务号每个月只能发4条。本篇的内容跟上篇内容相关，请先看上篇再看着篇。   微信开发 ---- 素材管理

截图对图文消息做了测试

①创建我们的API

②上传图文消息内的图片获取URL     列子中没有用到此接口

 ③上传图文消息素材

 

调用：  上传我们的临时素材，

 ④预览接口

  /// <summary>
        /// 预览接口
        /// 开发者可通过该接口发送消息给指定用户，在手机端查看消息的样式和排版。
        /// </summary>
        /// <param name="access_token"></param>
        /// <param name="openid">接收消息用户对应该公众号的openid</param>
        /// <param name="content">图文消息,语音,图片,视频:media_id(与根据分组群发中的media_id相同); 文本:文本消息</param>
        /// <param name="type"></param>
        /// <returns></returns>
        public static dynamic Preview(string access_token, string openid, string content, WxArtcleType type)
        {
            var url = string.Format("https://api.weixin.qq.com/cgi-bin/message/mass/preview?access_token={0}", access_token);
            var client = new HttpClient();
            var builder = new StringBuilder();
            builder.Append("{")
            .AppendFormat(""touser":"{0}"",openid)
            .Append(",");
            switch (type)
            {
                case WxArtcleType.News:
                    builder.Append(""mpnews":")
                        .Append("{")
                        .AppendFormat(""media_id":"{0}"", content)
                        .Append("},")
                        .Append(""msgtype":"mpnews"");
                    break;
                case WxArtcleType.Text:
                    builder.Append(""text":")
                       .Append("{")
                       .AppendFormat(""content":"{0}"", content)
                       .Append("},")
                       .Append(""msgtype":"text"");
                    break;
                case WxArtcleType.Voice:
                    builder.Append(""voice":")
                           .Append("{")
                           .AppendFormat(""media_id":"{0}"", content)
                           .Append("},")
                           .Append(""msgtype":"voice"");
                    break;
                case WxArtcleType.Image:
                    builder.Append(""image":")
                          .Append("{")
                          .AppendFormat(""media_id":"{0}"", content)
                          .Append("},")
                          .Append(""msgtype":"image"");
                    break;
                case WxArtcleType.Video:
                    builder.Append(""video":")
                          .Append("{")
                          .AppendFormat(""media_id":"{0}"", content)
                          .Append("},")
                          .Append(""msgtype":"video"");
                    break;
            }
            builder.Append("}");
            NetLog.WriteTextLog("Pre", builder.ToString(), DateTime.Now);
            var result = client.PostAsync(url, new StringContent(builder.ToString())).Result;
            return JsonHelp.ToDynamic(result.Content.ReadAsStringAsync().Result);
        }

调用：

运行：

预览效果：

 

总结：由上传接口得到 media_id -----》上传图文消息，返回 media_id  -------》传值进行测试

 

⑤我们也可以结合素材管理来完成发送

原理：我们的media_id可以是临时的也可以是永久的media_id。注意：上传永久的图文消息需要的是永久的缩略图media_id。 

 

预览效果：

⑥根据OpenID列表群发

   /// <summary>
        /// 根据OpenID列表群发【订阅号不可用，服务号认证后可用】
        /// </summary>
        /// <param name="access_token"></param>
        /// <param name="content">图文消息,语音,图片,视频:media_id; 文本:文本消息</param>
        /// <param name="type"></param>
        /// <param name="touser"></param>
        /// <returns>success:{"errcode":0,"errmsg":"send job submission success","msg_id":34182}</returns>
        public static dynamic ReplayOpenids(string access_token, string content, WxArtcleType type, IEnumerable<string> touser, string videoTitle, string videoDesc)
        {
            var url = string.Format("https://api.weixin.qq.com/cgi-bin/message/mass/send?access_token={0}", access_token);
            var client = new HttpClient();
            var builder = new StringBuilder();
            builder.Append("{")
            .Append(""touser":")
            .Append("[");
            string aa = "";
            foreach (var t in touser)
            {
                aa += string.Format(""{0}",", t);
            }
            aa=aa.TrimEnd(',');
            builder.Append(aa);
            builder.Append("],");
            switch (type)
            {
                case WxArtcleType.News:
                    builder.Append(""mpnews":")
                        .Append("{")
                        .AppendFormat(""media_id":"{0}"", content)
                        .Append("},")
                        .Append(""msgtype":"mpnews",")
                        .Append(""send_ignore_reprint":"0"");                         
                    break;
                case WxArtcleType.Text:
                    builder.Append(""text":")
                       .Append("{")
                       .AppendFormat(""content":"{0}"", content)
                       .Append("},")
                       .Append(""msgtype":"text"");
                    break;
                case WxArtcleType.Voice:
                    builder.Append(""voice":")
                           .Append("{")
                           .AppendFormat(""media_id":"{0}"", content)
                           .Append("},")
                           .Append(""msgtype":"voice"");
                    break;
                case WxArtcleType.Image:
                    builder.Append(""image":")
                          .Append("{")
                          .AppendFormat(""media_id":"{0}"", content)
                          .Append("},")
                          .Append(""msgtype":"image"");
                    break;
                case WxArtcleType.Video:
                    builder.Append(""video":")
                          .Append("{")
                          .AppendFormat(""media_id":"{0}",", content)
                          .AppendFormat(""title":"{0}",", videoTitle)
                          .AppendFormat(""description":"{0}"", videoDesc)
                          .Append("},")
                          .Append(""msgtype":"video"");
                    break;
            }
            builder.Append("}");
            NetLog.WriteTextLog("ReplayOpenids", builder.ToString(), DateTime.Now);
            var result = client.PostAsync(url, new StringContent(builder.ToString())).Result;
            return JsonHelp.ToDynamic(result.Content.ReadAsStringAsync().Result);
        }

 还有一些这边就没有写了，如果需要可以根据官网拼接字符串进行测试。