调用获取已发布的消息列表，获取的数量为0，已确定公众号已发布当中有图文内容，但是返回的参数如下：{"item":[],"total_count":0,"item_count":0}

部分代码：

WXHandle wXHandle = new WXHandle();

string init = wXHandle.GetInit(Common.getConfigValue("WX_ConfigID"));

string url = "https://api.weixin.qq.com/cgi-bin/freepublish/batchget?access_token=" + init;

string json = "{\"offset\":\"0\",\"count\":\"20\",\"no_content\":\"1\"}";

string result = RequestHelper.HttpPost(url, json);