//新增永久圖片素材 public string add_matrial(string accesstoke,string picurl,out string errmsg) { string result = string.Empty; errmsg = ""; string addMatrialAPI = string.Format("https://api.weixin.qq.com/cgi-bin/material/add_material?access_token={0}&type=image",accesstoke); WebClient wc = new WebClient(); wc.Headers.Add("User-Agent", "Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko"); byte[] bs = wc.DownloadData(picurl); MemoryStream ms = new MemoryStream(bs); string res = PostMultipart(addMatrialAPI, new Dictionary<string, object>() { { "media", new FormFile() { Name = "image1.jpg", ContentType = "image/jpeg", Stream = ms } }, }); JObject jobject= JsonConvert.DeserializeObject<JObject>(res); if(jobject!=null) { if(jobject["errcode"]!=null&&jobject["errcode"].ToString()!="0") { errmsg = jobject["errmsg"].ToString(); } else { result=jobject["media_id"].ToString(); } } return result; } //新增草稿 public string add_draft(string accesstoken,string thumb_media_id,string title,string content,out string errmsg) { string add_draft_url = string.Format("https://api.weixin.qq.com/cgi-bin/draft/add?access_token={0}", accesstoken); int code= 200; errmsg = ""; string result = string.Empty; Dictionary<string, List<dynamic>> dic = new Dictionary<string, List<dynamic>>(); dic.Add("articles", new List<dynamic>{ new { title=title, content=content, thumb_media_id=thumb_media_id } }); string parastr = JsonConvert.SerializeObject(dic); string res= HttpHelper.PostJSON(add_draft_url, parastr,Encoding.UTF8,out code); JObject jobject= JsonConvert.DeserializeObject<JObject>(res); if(jobject!=null) { if(jobject["errcode"]!=null&&jobject["errcode"].ToString()!="0") { errmsg = jobject["errmsg"].ToString(); } else { result=jobject["media_id"].ToString(); } } return result; } //調用羣發接口 public string sendall(string accesstoken,string media_id,out string errmsg ) { string add_draft_url = string.Format("https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token={0}", accesstoken); int code= 200; errmsg = ""; string result = string.Empty; dynamic para =new { filter=new { is_to_all=true }, mpnews=new { media_id = media_id }, msgtype = "mpnews", send_ignore_reprint = 1 }; string parastr = JsonConvert.SerializeObject(para); string res= HttpHelper.PostJSON(add_draft_url, parastr,Encoding.UTF8,out code); JObject jobject= JsonConvert.DeserializeObject<JObject>(res); if(jobject!=null) { if(jobject["errcode"]!=null&&jobject["errcode"].ToString()!="0") { errmsg = jobject["errmsg"].ToString(); } else { result=jobject["msg_data_id"].ToString(); } } return result; }