微信网页授权,获取用户的微信官方API文档地址:
http://mp.weixin.qq.com/wiki/17/c0f37d5704f0b64713d5d2c37b468d75.html
三次握手
微信认证流程(我自己简称三次握手):
1、用户同意授权,获取code
2、通过code换取网页授权access_token,用户openId等信息
3、通过access_token和用户的openId获取该用户的用户信息
思路:
经过研究,我这边的思路是:让所有页面都继承同一个页面,在这个页面里做微信登录授权处理,
因为第一步必须要经过微信的登录授权,不能网页后端请求,所以先要经过用户同意,通过页面网页请求组装的微信请求链接。请求该链接,
获取code后,后端模拟请求。获取用户信息。
微信三次握手的方法(代码)
public class WeiXinOAuth { /// <summary> /// 获取微信Code /// </summary> /// <param name="appId"></param> /// <param name="appSecret"></param> /// <param name="redirectUrl"></param> public string GetWeiXinCode(string appId,string appSecret,string redirectUrl) { Random r = new Random(); //微信登录授权 //string url = "https://open.weixin.qq.com/connect/qrconnect?appid=" + appId + "&redirect_uri=" + redirectUrl +"&response_type=code&scope=snsapi_login&state=STATE#wechat_redirect"; //微信OpenId授权 //string url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appId + "&redirect_uri=" + redirectUrl +"&response_type=code&scope=snsapi_login&state=STATE#wechat_redirect"; //微信用户信息授权 string url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid=" + appId + "&redirect_uri=" + redirectUrl + "&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect"; return url; } /// <summary> /// 通过code获取access_token /// </summary> /// <param name="appId"></param> /// <param name="appSecret"></param> /// <param name="code"></param> /// <returns></returns> public Model.WeiXinAccessTokenResult GetWeiXinAccessToken(string appId,string appSecret,string code) { string url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid="+appId+"&secret="+appSecret+ "&code="+ code + "&grant_type=authorization_code"; string jsonStr = Tools.GetHttpRequest(url); Model.WeiXinAccessTokenResult result = new Model.WeiXinAccessTokenResult(); if (jsonStr.Contains("errcode")) { Model.WeiXinErrorMsg errorResult = new Model.WeiXinErrorMsg(); errorResult=JsonHelper.ParseFromJson<Model.WeiXinErrorMsg>(jsonStr); result.ErrorResult = errorResult; result.Result = false; } else { Model.WeiXinAccessTokenModel model = new Model.WeiXinAccessTokenModel(); model = JsonHelper.ParseFromJson<Model.WeiXinAccessTokenModel>(jsonStr); result.SuccessResult = model; result.Result = true; } return result; } /// <summary> /// 拉取用户信息 /// </summary> /// <param name="accessToken"></param> /// <param name="openId"></param> /// <returns></returns> public Model.WeiXinUserInfoResult GetWeiXinUserInfo(string accessToken,string openId) { string url = "https://api.weixin.qq.com/sns/userinfo?access_token="+accessToken+"&openid="+openId+"&lang=zh_CN"; string jsonStr = Tools.GetHttpRequest(url); Model.WeiXinUserInfoResult result = new Model.WeiXinUserInfoResult(); if(jsonStr.Contains("errcode")) { Model.WeiXinErrorMsg errorResult = new Model.WeiXinErrorMsg(); errorResult = JsonHelper.ParseFromJson<Model.WeiXinErrorMsg>(jsonStr); result.ErrorMsg = errorResult; result.Result = false; } else { Model.WeiXinUserInfo userInfo = new Model.WeiXinUserInfo(); userInfo = JsonHelper.ParseFromJson<Model.WeiXinUserInfo>(jsonStr); result.UserInfo = userInfo; result.Result = true; } return result; } }
所需要的对应实体类
WeiXinAccessTokenResult 类:
public class WeiXinAccessTokenResult { public WeiXinAccessTokenModel SuccessResult { get; set; } public bool Result { get; set; } public WeiXinErrorMsg ErrorResult { get; set; } }
/// <summary> /// 通过code获取access_token 请求成功的实体 /// </summary> public class WeiXinAccessTokenModel { /// <summary> /// 接口调用凭证 /// </summary> public string access_token { get; set; } /// <summary> /// access_token接口调用凭证超时时间,单位(秒) /// </summary> public int expires_in { get; set; } /// <summary> /// 用户刷新access_token /// </summary> public string refresh_token { get; set; } /// <summary> /// 授权用户唯一标识 /// </summary> public string openid { get; set; } /// <summary> /// 用户授权的作用域,使用逗号(,)分隔 /// </summary> public string scope { get; set; } }
/// <summary> /// 微信错误访问的情况 /// </summary> public class WeiXinErrorMsg { /// <summary> /// 错误编号 /// </summary> public int errcode { get; set; } /// <summary> /// 错误提示消息 /// </summary> public string errmsg { get; set; } }
/// <summary> /// 获取微信用户信息 /// </summary> public class WeiXinUserInfoResult { /// <summary> /// 微信用户信息 /// </summary> public WeiXinUserInfo UserInfo { get; set; } /// <summary> /// 结果 /// </summary> public bool Result { get; set; } /// <summary> /// 错误信息 /// </summary> public WeiXinErrorMsg ErrorMsg { get; set; } }
public class WeiXinUserInfo { /// <summary> /// 用户的唯一标识 /// </summary> public string openid { get; set; } /// <summary> /// 用户昵称 /// </summary> public string nickname { get; set; } /// <summary> /// 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 /// </summary> public string sex { get; set; } /// <summary> /// 用户个人资料填写的省份 /// </summary> public string province { get; set; } /// <summary> /// 普通用户个人资料填写的城市 /// </summary> public string city { get; set; } /// <summary> /// 国家,如中国为CN /// </summary> public string country { get; set; } /// <summary> /// 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 /// </summary> public string headimgurl { get; set; } /// <summary> /// 用户特权信息,json 数组,如微信沃卡用户为(chinaunicom) /// </summary> public string[] privilege { get; set; } }
public partial class BasePage : System.Web.UI.Page { public BasePage() { this.Page.Load += new EventHandler(Page_Load); this.Page.Unload += new EventHandler(Page_UnLoad); } protected void Page_Load(object sender, EventArgs e) { DoWith(); } protected void Page_UnLoad(object sender, EventArgs e) { } private void DoWith() { //用户尚未登录 if (BLL.UserInfoManager.Instance().GetUserId() <= 0) { //获取appId,appSecret的配置信息 string appId = System.Configuration.ConfigurationSettings.AppSettings["appid"]; string appSecret = System.Configuration.ConfigurationSettings.AppSettings["secret"]; Core.WeiXinOAuth weixinOAuth = new WeiXinOAuth(); //微信第一次握手后得到的code 和state string _code = Cmn.Request.Get("code"); string _state = Cmn.Request.Get("state"); if (_code == "" || _code == "authdeny") { if (_code == "") { //发起授权(第一次微信握手) string _authUrl = weixinOAuth.GetWeiXinCode(appId, appSecret, HttpContext.Current.Server.UrlEncode(HttpContext.Current.Request.Url.ToString())); HttpContext.Current.Response.Redirect(_authUrl, true); } else { // 用户取消授权 HttpContext.Current.Response.Redirect("~/Error.html", true); } } else { //获取微信的Access_Token(第二次微信握手) Core.Model.WeiXinAccessTokenResult modelResult = weixinOAuth.GetWeiXinAccessToken(appId, appSecret, _code); //获取微信的用户信息(第三次微信握手) Core.Model.WeiXinUserInfoResult _userInfo = weixinOAuth.GetWeiXinUserInfo(modelResult.SuccessResult.access_token,modelResult.SuccessResult.openid); //用户信息(判断是否已经获取到用户的微信用户信息) if (_userInfo.Result && _userInfo.UserInfo.openid != "") { //保存获取到的用户微信用户信息,并保存到数据库中 } else { GameTradingByPublic.ExceptionLog.writeFile(2, "获取用户OpenId失败"); } } } } }