1.微信公众号---获取关注用户

1.获取所有关注者的openid json 注：每次可以拉取到10000个。

参数：access_token就是全局的，通过appid和密钥获到的

参数：next_openid 第一次拉取不用传，再拉的时候要传,最后一的那个openid

      /// <summary>
      /// 获取关注者列表openid
      /// </summary>
      /// <param name="nextopenid"></param>
      /// <param name="access_token"></param>
      /// <returns></returns>
      public string GetOpenIdList(string nextopenid, string access_token)
      {
          //if (string.IsNullOrEmpty(nextopenid))
          //    nextopenid = "";
          string url = string.Format("https://api.weixin.qq.com/cgi-bin/user/get?access_token={0}&next_openid=" + nextopenid,
              access_token);
          return HttpUtil.GetData( url,null);

      }

返回josn 结构

{"total":2,"count":2,"data":{"openid":["","OPENID1","OPENID2"]},"next_openid":"NEXT_OPENID"}

total:总数量;

count:本次拉取的数量，最大为10000;

next_openid:拉取列表的后一个用户的OPENID

2.通过openid获取用户详情

access_token不解释了

openid本公众号对应的openid

  public string GetUserInfoByOpenid(string openid)
      {
          string url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=" + AccessTokenCls.AccessToken + "&openid=" + openid + "&lang=zh_CN";
          return HttpUtil.GetData(null, url);
      }

返回JSON数据

{
    "subscribe": 1,
    "openid": "o6_bmjrPTlm6_2sgVt7hMZOPfL2M",
    "nickname": "Band",
    "sex": 1,
    "language": "zh_CN",
    "city": "广州",
    "province": "广东",
    "country": "中国",
    "headimgurl":    "http://wx.qlogo.cn/mmopen/g3MonUZtNHkdmzicIlibx6iaFqAc56vxLSUfpb6n5WKSYVY0ChQKkiaJSgQ1dZuTOgvLLrhJbERQQ4eMsv84eavHiaiceqxibJxCfHe/0",
   "subscribe_time": 1382694957,
   "unionid": " o6_bmasdasdsad6_2sgVt7hMZOPfL"
   "remark": "",
   "groupid": 0
}

　参数说明