1.1.微信公众号开发----获取个人用户信息（2）---获取微信用户信息

比眉伴天荒 2023-06-25 06:01 2阅读 0赞

根据开发者文档获取用户信息分为4步： 获取code(授权标识)--->通过code掉微信接口获取OpenId（微信公众号每个用户的唯一标识）-->获取accessToken（调接口标识）---》通过OpenId、accessToken 掉接口获取 用户信息。

前面已经提到获取code，[https://blog.csdn.net/wangwengrui40/article/details/103710839][https_blog.csdn.net_wangwengrui40_article_details_103710839]

那么我们怎么利用code获取 用户信息呢

# 一.获取openid #

获取openid，直接调用微信的接口

Appid 与  secret开发者密码 在微信公众号内

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dhbmd3ZW5ncnVpNDA_size_16_color_FFFFFF_t_70][]

public async Task<string> GetUserMessageCode(string code)
            {
               HttpClient httpClient = new HttpClient();//C#封装的Http访问接口的方法，其他语言切换
                var getParameter = await httpClient.GetStringAsync("https://api.weixin.qq.com/sns/oauth2/access_token?appid=" 
    + 你自己的Appid+ "&secret=" +你自己的开发者密码 + "&code=" + code + "&grant_type=authorization_code");
                //得到的参数序列化
                var usermesage = JsonConvert.DeserializeObject<GetUserCodeDto>(getParameter);
                return usermesage.openid;
            }

public class GetUserCodeDto
        {/// <summary>
         /// access_token
         /// </summary>
            public string access_token { get; set; }
            /// <summary>
            /// openid
            /// </summary>
            public string openid { get; set; }
        }

# 二.获取AccessToken #

获取用户信息要不，你本机的公网ip加进白名单。不知道的话，错误信息会告诉你的，（看微信返回报错的ip）

![20201020150820252.png][]

/// <summary>
            /// 得到ACCESS_TOKEN
            /// </summary>
            /// <returns></returns>
            public async Task<string> GetACCESS_TOKEN()
            {
                HttpClient httpClient = new HttpClient();//C#封装的Http访问接口的方法，其他语言切换
                var getParameter = await httpClient.GetStringAsync("https://api.weixin.qq.com/cgi-bin/token?grant_type=client_credential&appid="
     +你自己的appid + "&secret=" + 你自己的secret);
                var access_token = JsonConvert.DeserializeObject<AccessTokenDto>(getParameter);
                return access_token.access_token;
            }

public class AccessTokenDto
        {/// <summary>
         /// access_token
         /// </summary>
            public string access_token { get; set; }
        }

# 三.获取用户信息 #

public async Task<GetUserDto> GetUserMessage(string openid, string lang = "zh_CN")
            {
               HttpClient httpClient = new HttpClient();//C#封装的Http访问接口的方法，其他语言切换
                var getParameter = await httpClient.GetStringAsync("https://api.weixin.qq.com/cgi-bin/user/info?access_token=" + 获取到的access_token + "&openid=" +  获取到的openid + "&lang=" + lang);
                var magess2 = JsonConvert.DeserializeObject<GetUserDto>(getParameter);
                return magess2;
            }

public class GetUserDto
        {
            public int? subscribe { get; set; }
            public string openid { get; set; }
            public string nickname { get; set; }
            public int? sex { get; set; }
            public string language { get; set; }
            public string city { get; set; }
            public string province { get; set; }
            public string country { get; set; }
            public string headimgurl { get; set; }
            public int? subscribe_time { get; set; }
            public int? unionid { get; set; }
            public string remark { get; set; }
            public int groupid { get; set; }
            public string[] tagid_list { get; set; }
            public string subscribe_scene { get; set; }
            public int? qr_scene { get; set; }
            public string qr_scene_str { get; set; }
        }

[https_blog.csdn.net_wangwengrui40_article_details_103710839]: https://blog.csdn.net/wangwengrui40/article/details/103710839
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dhbmd3ZW5ncnVpNDA_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/20191226120228374.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dhbmd3ZW5ncnVpNDA=,size_16,color_FFFFFF,t_70
[20201020150820252.png]: https://img-blog.csdnimg.cn/20201020150820252.png