asp.net mvc C# 微信公众号-服务号开发 （用户网页授权获取用户昵称头像信息）

参考文档：https://mp.weixin.qq.com/wiki?t=resource/res_main&id=mp1445241432

一、安装Senparc.Weixin NuGet包。

二、添加引用

 using Senparc.CO2NET.Extensions;

 using Senparc.Weixin.MP.Entities.Request;

三、微信公众号-开发-基本配置 

Global.asax全局配置  Application_Start

//微信配置开始
            var isGLobalDebug = true;//设置全局 Debug 状态
            var senparcSetting = SenparcSetting.BuildFromWebConfig(isGLobalDebug);
            var register = RegisterService.Start(senparcSetting).UseSenparcGlobal();//CO2NET全局注册，必须！

            var isWeixinDebug = true;//设置微信 Debug 状态
            var senparcWeixinSetting = SenparcWeixinSetting.BuildFromWebConfig(isWeixinDebug);
            register.UseSenparcWeixin(senparcWeixinSetting, senparcSetting);////微信全局注册，必须！

//注册公众号
            AccessTokenContainer.Register(
                System.Configuration.ConfigurationManager.AppSettings["WeixinAppId"],
                System.Configuration.ConfigurationManager.AppSettings["WeixinAppSecret"],
                "公众号");

            //注册小程序（完美兼容）
            AccessTokenContainer.Register(
                System.Configuration.ConfigurationManager.AppSettings["WxOpenAppId"],
                System.Configuration.ConfigurationManager.AppSettings["WxOpenAppSecret"],
                "小程序");

            //微信配置结束

　　

  /// <summary>
  /// 微信后台验证地址（使用Get），微信后台的“接口配置信息”的Url填写如：http://sdk.weixin.senparc.com/weixin
  /// </summary>
  [HttpGet]
  [ActionName("Index")]
  public ActionResult Get(PostModel postModel, string echostr)
  {
     if (CheckSignature.Check(postModel.Signature, postModel.Timestamp, postModel.Nonce, Token))
     {
         return Content(echostr); //返回随机字符串则表示验证通过
     }
      else
     {
           return Content("failed:" + postModel.Signature + "," + MP.CheckSignature.GetSignature(postModel.Timestamp, postModel.Nonce, Token) + "。" +
              "如果你在浏览器中看到这句话，说明此地址可以被作为微信公众账号后台的Url，请注意保持Token一致。");
       }
   }

四、获取公众号相关信息

public static readonly string Token = WebConfigurationManager.AppSettings["WeixinToken"];//与微信公众账号后台的Token设置保持一致，区分大小写。
public static readonly string EncodingAESKey = WebConfigurationManager.AppSettings["WeixinEncodingAESKey"];//与微信公众账号后台的EncodingAESKey设置保持一致，区分大小写。
public static readonly string AppId = WebConfigurationManager.AppSettings["WeixinAppId"];//与微信公众账号后台的AppId设置保持一致，区分大小写。
public static readonly string WeixinAppSecret = WebConfigurationManager.AppSettings["WeixinAppSecret"];

五、获取token

public string GetAccessToken()
{
   return Senparc.Weixin.MP.Containers.AccessTokenContainer.GetAccessToken(AppId);
}

六、自定义创建菜单

利用json更新菜单

[HttpPost]
public string CreateMenuFromJson(string token, string fullJson)
{
   //TODO:根据"conditionalmenu"判断自定义菜单

   var apiName = "使用JSON更新";
   try
   {
    GetMenuResultFull resultFull = Newtonsoft.Json.JsonConvert.DeserializeObject<GetMenuResultFull>(fullJson);
    //重新整理按钮信息
     WxJsonResult result = null;
     IButtonGroupBase buttonGroup = null;

                buttonGroup = CommonAPIs.CommonApi.GetMenuFromJsonResult(resultFull, new ButtonGroup()).menu;
                result = CommonAPIs.CommonApi.CreateMenu(token, buttonGroup);

                var json = new
                {
                    Success = result.errmsg == "ok",
                    Message = "菜单更新成功。" + apiName
                };
                //return Json(json);
                return "菜单更新成功。" + apiName;
            }
            catch (Exception ex)
            {
                var json = new { Success = false, Message = string.Format("更新失败：{0}。{1}", ex.Message, apiName) };
                //return Json(json);
                return string.Format("更新失败：{0}。{1}", ex.Message, apiName);
            }
        }

json格式实例（一级菜单最多三个，二级菜单最多五个）

{
  "menu": {
    "button": [      
      {
        "name": "一级菜单",
        "sub_button": [
          {
            "type": "view",
            "name": "二级菜单",
            "url": ""
          }          
        ]
      }
    ]
  }
}

读取json

public string GetMenuJson()
{
     StreamReader sr = new StreamReader(System.Web.HttpRuntime.AppDomainAppPath + "\\menu.json", Encoding.Default);
     string line;
     string jsonobj = "";
     while ((line = sr.ReadLine()) != null)
     {
       jsonobj = jsonobj + line.ToString();
     }
    return jsonobj;
}

　创建菜单

public ActionResult CreateMenu()
 {
   string MenuJson = GetMenuJson();
   string token = GetAccessToken();
   return Content(CreateMenuFromJson(token, MenuJson));
}

七、调用授权页面获取用户微信code

urlpath:回调url,此url对应域名需要配置在微信公众号-接口权限-网页服务-网页授权-网页授权获取用户基本信息

public void GetWeixinCode(string urlpath)
{
    string state = Guid.NewGuid().ToString("N");
    string url = string.Format("https://open.weixin.qq.com/connect/oauth2/authorize?appid={0}&redirect_uri={1}&response_type=code&scope=snsapi_userinfo&state=" + state + "#wechat_redirect", AppId, urlpath);
    Response.Redirect(url);
}

八、根据code获取用户openid

post访问地址

public static string WebRequestPostOrGet(string sUrl, string sParam)
        {
            byte[] bt = System.Text.Encoding.UTF8.GetBytes(sParam);
            Uri uriurl = new Uri(sUrl);
            HttpWebRequest req = (HttpWebRequest)HttpWebRequest.Create(uriurl);
            req.Method = "Post";
            req.Timeout = 120 * 1000;
            req.ContentType = "application/x-www-form-urlencoded;";
            req.ContentLength = bt.Length;

            using (Stream reqStream = req.GetRequestStream())
            {
                reqStream.Write(bt, 0, bt.Length);
                reqStream.Flush();
            }
            try
            {
                using (WebResponse res = req.GetResponse())
                {
                    Stream resStream = res.GetResponseStream();
                    StreamReader resStreamReader = new StreamReader(resStream, System.Text.Encoding.UTF8);
                    string resLine;
                    System.Text.StringBuilder resStringBuilder = new System.Text.StringBuilder();

                    while ((resLine = resStreamReader.ReadLine()) != null)
                    {
                        resStringBuilder.Append(resLine + System.Environment.NewLine);
                    }

                    resStream.Close();
                    resStreamReader.Close();
                    return resStringBuilder.ToString();
                }
            }
            catch (Exception ex)
            {
                return ex.Message;
            }
        }

根据code获取openid

 /// <summary>
        /// 根据code获取用户openid
        /// </summary>
        /// <param name="Code"></param>
        /// <param name="access_token"></param>
        /// <returns></returns>
        public string GetOpenidByCode(string Code, out string access_token)
        {
            string url = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code", AppId, WeixinAppSecret, Code);

            string ReText = WebRequestPostOrGet(url, "");//post/get方法获取信息

            Newtonsoft.Json.Linq.JObject DicText = (Newtonsoft.Json.Linq.JObject)Newtonsoft.Json.JsonConvert.DeserializeObject(ReText);

            access_token = "";
            if (DicText.ContainsKey("access_token"))
                access_token = DicText["access_token"].ToString();
            if (!DicText.ContainsKey("openid"))
                return "";
            return DicText["openid"].ToString();
        }

 

九、根据openid获取用户信息

WXModel：

参数	描述
openid	用户的唯一标识
nickname	用户昵称
sex	用户的性别，值为1时是男性，值为2时是女性，值为0时是未知
province	用户个人资料填写的省份
city	普通用户个人资料填写的城市
country	国家，如中国为CN
headimgurl	用户头像，最后一个数值代表正方形头像大小（有0、46、64、96、132数值可选，0代表640*640正方形头像），用户没有头像时该项为空。若用户更换头像，原有头像URL将失效。
privilege	用户特权信息，json 数组，如微信沃卡用户为（chinaunicom）
unionid	只有在用户将公众号绑定到微信开放平台帐号后，才会出现该字段。

public class WXModel
    {
        public string openid { get; set; }
        public string nickname { get; set; }
        public int sex { get; set; }
        public string province { get; set; }
        public string city { get; set; }
        public string country { get; set; }
        public string headimgurl { get; set; }
    }

　　获取用户信息

public WXModel GetUserInfoByCode(string code)
 {
   string access_token = "";
   string openid = GetOpenidByCode(code, out access_token);
   string userinfo = WebRequestPostOrGet("https://api.weixin.qq.com/sns/userinfo?access_token=" + access_token + "&openid=" + openid + "&lang=zh_CN", "");
   WXModel model = Newtonsoft.Json.JsonConvert.DeserializeObject<WXModel>(userinfo);
   return model;
}

十、微网站公用获取用户信息方法

        public WXModel GetUser(string urlpath)
        {
            WXModel model = null;
            var code = Request.Params["code"];
            urlpath = urlpath.UrlEncode();
            if (code == null || code == "")
            {
                GetWeixinCode(urlpath);
            }
            else
            {
                model = GetUserInfoByCode(code);
            }
            return model;
        }

 

十一、需要获取用户的地方

string urlpath = Request.Url.AbsoluteUri;
tb_user user = GetUser(urlpath);

注：以上代码属个人整理，用于交流学习，非原创。如涉及侵权，请联系我，我立即处理。（QQ/微信：742010299 昵称：同心同德）