获得openid和用户信息

分享方法

通过微信接口获取用户信息主要分为以下几个步骤：

a、获取公众号的access_token

b、通过查询所有用户OPenid接口获取所有用户。

string url = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=" + access_token;

c、通过获取用户openid，然后通过openid获取用户数据

d、把用户信息添加到数据库中。

1、参数化查询以及添加用户信息到数据库方法

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public void AddToDataBase(UserJson userInfo)
{
using (SqlConnection conn = new SqlConnection(connStrings))
{
conn.Open();
// openid, subscribe, nickname, sex, language, city, province, country, headimgurl, subscribetime, remark="";
string cmdText = @"insert into UserInfo values(@openid,@subscribe,@nickname,@sex,@language,@city,
@province,@country,@headimgurl,@subscribetime,@remark)";
SqlCommand cmd = new SqlCommand(cmdText, conn);
cmd.Parameters.AddWithValue("@openid",userInfo.openid);
cmd.Parameters.AddWithValue("@subscribe",userInfo.subscribe );
cmd.Parameters.AddWithValue("@nickname",userInfo.nickname);
cmd.Parameters.AddWithValue("@sex", userInfo.sex);
cmd.Parameters.AddWithValue("@language",userInfo.language );
cmd.Parameters.AddWithValue("@city", userInfo.city);
cmd.Parameters.AddWithValue("@province",userInfo.province);
cmd.Parameters.AddWithValue("@country", userInfo.country);
cmd.Parameters.AddWithValue("@headimgurl",userInfo.headimgurl);
cmd.Parameters.AddWithValue("@subscribetime",userInfo.subscribe_time);
cmd.Parameters.AddWithValue("@remark", userInfo.remark);
int res = cmd.ExecuteNonQuery();
}
}

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2、通过Openid调用微信接口获取用户数据

 public void GetUserInfo(string openid)
        {
            string url = "https://api.weixin.qq.com/cgi-bin/user/info?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN";
            string result = HttpGet(url, "");
            // json 反序列化为对象
            JavaScriptSerializer serializer = new JavaScriptSerializer();
            UserJson UserInfo = serializer.Deserialize<UserJson>(result);  //通过这种方法反序列化，不出因为出现特殊字符而出错
            AddToDataBase(UserInfo);
        }

3、获取所有openid

  string url = "https://api.weixin.qq.com/cgi-bin/user/get?access_token=" + access_token;
                string openidList = HttpGet(url, "");
                List<string> list = new List<string>();
                JavaScriptSerializer serializer = new JavaScriptSerializer();
                UserListJsonResult result = serializer.Deserialize<UserListJsonResult>(openidList); //通过这种方法，反序列化成功
              //  UserListJsonResult result = JsonHelper.GetObjFromJson<UserListJsonResult>(openidList);