博客

1.创建网站应用

1.1去微信开放平台申请网站应用。
1.2申请 审核通过后可获得 AppID和AppSecret.
1.3并且申请微信登录接口。

2.生成二维码和获取code

官方文档：https://developers.weixin.qq.com/doc/oplatform/Website_App/WeChat_Login/Wechat_Login.html
2.1 官方文档写的很明细。

例子：https://open.weixin.qq.com/connect/qrconnect?appid=wx2d31f65267d0fcb6&redirect_uri=http%3a%2f%2fwww.webus.cn&response_type=code&scope=snsapi_login&state=awen#wechat_redirect

3.获取用户信息

3.1上代码
3.1.1获取二维码，通过返回的路径进行访问是一个二维码。

[HttpPost]
        [ValidateInput(false)]
        public JsonResult ScanThirdGo(bool? isHttps = false)
        {
            string sign = Guid.NewGuid().ToString().Replace("-", string.Empty);

            string callBackUrl = (Convert.ToBoolean(isHttps) ? "https://" : "http://") + System.Web.HttpContext.Current.Request.Url.Host.ToString() + "/API/WeiXin/OpenThirdPartCallBack";

            callBackUrl = System.Web.HttpUtility.UrlEncode(callBackUrl);

            var openAppId = ConfigurationManager.AppSettings["WxOpenID"];

            string url = "https://open.weixin.qq.com/connect/qrconnect?appid=" + openAppId + "&redirect_uri=" + callBackUrl + "&response_type=code&scope=snsapi_login" + "&state="
                + sign + "#wechat_redirect";

            LogHelper.Info("ThirdGo:" + url + ",sign:" + sign);

            return Json(CloudHill.Framework.StandardComponents.Result.GetSuccess(url));
        }

3.1.2微信回调接口。用户点击同意之后可以获得用户的基本信息。

 public ActionResult OpenThirdPartCallBack(string code, string state)
        {
            LogHelper.Info("OpenThirdPartCallBack:code:" + code + ",state:" + state);

            var openAppId = ConfigurationManager.AppSettings["WxOpenID"];
            var openScript = ConfigurationManager.AppSettings["WxOpenScript"];

            var result = OAuthApi.GetAccessToken(openAppId, openScript, code);

            if (!string.IsNullOrEmpty(result.access_token))
            {

                var userInfo = CloudHill.Framework.WeiXin.Logic.WeixinHelper.OAuth2.GetAuthorizeUserInfo(result.access_token, result.openid);

                var openID = userInfo.openid;

                var uEntity = Member_Logic.GetSingle(i => i.M_openID == openID);

                var url = "";

                if (uEntity == null)
                {
                    throw new ArgumentException("该用户未绑定微信，无法登录，请用账号和密码登录，去个人资料进行绑定微信。");
                }
                else
                {

                    url = "ss";
                }

                Response.Redirect(System.Web.HttpUtility.HtmlEncode(url), true);
            }

            return null;
        }