String url=" https://api.weixin.qq.com/cgi-bin/message/mass/sendall?access_token="+accessToken;
JSONObject jsonObject=new JSONObject();
JSONObject filter=new JSONObject();
filter.put("is_to_all",b);
JSONObject mpnews=new JSONObject();
mpnews.put("media_id",mediaId);
jsonObject.put("filter",filter);
jsonObject.put("mpnews",mpnews);
jsonObject.put("send_ignore_reprint",0);
jsonObject.put("msgtype","mpnews");
System.out.println(jsonObject);
String response=HttpUtil.post(url,jsonObject);
JSONObject jsonObject2=JSONObject.parseObject(response);
Long msg_data_id= (Long) jsonObject2.get("publish_status");