C#实现的微信网页授权操作逻辑封装示例

string appid = "wx145b4a8fd07b24e8";string appsecrect = "fe6951dcb99772411c42f724b1336065";string redirect_url = "配置域名下的回调地址";OAuthManage _oauth = null;/// <summary>///控制器构造函数/// </summary>public UserController(){  _oauth = new OAuthManage(appid, appsecrect, redirect_url);}/// <summary>/// 授权登录/// </summary>/// <returns></returns>public ActionResult AuthLogin(){  ViewBag.url = _oauth.GetCodeUrl();  return View();}/// <summary>/// 回调处理/// </summary>/// <returns></returns>public ActionResult OAuthHandle(){  string result = "";  //注册事件处理  _oauth.OnError = (e) =>  {    string msg = "";    Exception inner = e;    while (inner != null)    {      msg += inner.Message;      inner = inner.InnerException;    }    result = msg;    LogOperate.Write(msg);  };  _oauth.OnGetTokenSuccess = (token) =>  {    result += "<br/>";    result += token.ToJsonString();  };  _oauth.OnGetUserInfoSuccess = (user) =>  {    result += "<br/>";    result += user.ToJsonString();  };  //第二步  _oauth.GetAccess_Token();  //第三步  _oauth.GetUserInfo();  //显示结果  ViewBag.msg = result;  return View();}

namespace WXPackage{  /// <summary>  /// 网页授权逻辑处理，  /// 处理三步操作，处理成功，返回用户基本信息  /// </summary>  public class OAuthManage  {    #region 基本信息定义    /// <summary>    /// 公众号的唯一标识    /// </summary>    private string appid;    /// <summary>    /// 公众号的appsecret    /// </summary>    private string secret;    /// <summary>    /// 回调url地址    /// </summary>    private string redirect_uri;    /// <summary>    /// 获取微信用户基本信息使用snsapi_userinfo模式    /// 如果使用静默授权，无法获取用户基本信息但可以获取到openid    /// </summary>    private string scope;    public OAuthManage(string appid, string appsecret, string redirect_uri, bool IsUserInfo = true)    {      this.appid = appid;      this.secret = appsecret;      this.redirect_uri = redirect_uri;      this.scope = IsUserInfo ? "snsapi_userinfo" : "snsapi_base";    }    #endregion    #region 请求过程信息    /// <summary>    /// 第一步获取到的Code 值    /// </summary>    public string Code { get; set; }    /// <summary>    /// 第二步获取到的access_token及相关数据    /// </summary>    public OAuthAccess_Token TokenData = null;    #endregion    #region 事件定义    /// <summary>    /// 当处理出现异常时，触发    /// </summary>    public Action<Exception> OnError = null;    /// <summary>    /// 当获取AccessToken成功是触发    /// </summary>    public Action<OAuthAccess_Token> OnGetTokenSuccess = null;    /// <summary>    /// 当获取用户信息成功时触发    /// </summary>    public Action<OAuthUser> OnGetUserInfoSuccess = null;    #endregion    #region 第二步,回调处理    /// <summary>    /// 第二步，通过code换取网页授权access_token    /// </summary>    public void GetAccess_Token()    {      try      {        //1.处理跳转        this.Code = ReqHelper.GetString("code");        if (string.IsNullOrEmpty(this.Code))          throw new Exception("获取code参数失败或用户禁止授权获取基本信息");        //1.发送获取access_token请求        string url = GetAccess_TokenUrl();        string result = NetHelper.Get(url);        //2.解析相应结果        TokenData = JsonConvert.DeserializeObject<OAuthAccess_Token>(result);        if (TokenData == null)          throw new Exception("反序列化结果失败，返回内容为：" + result);        //3.获取成功        if (OnGetTokenSuccess != null)          OnGetTokenSuccess(TokenData);      }      catch (Exception ex)      {        Error("第二步，通过code换取网页授权access_token异常", ex);      }    }    /// <summary>    /// 刷新当前access_token    /// </summary>    public OAuthAccess_Token RefreshAccess_Token()    {      try      {        //1.发送请求        string url = GetReferesh_TokenUrl();        string result = NetHelper.Get(url);        //2.解析结果        OAuthAccess_Token token = JsonConvert.DeserializeObject<OAuthAccess_Token>(result);        if (token == null)          throw new Exception("反序列化结果失败，返回内容：" + result);        return token;      }      catch (Exception ex)      {        Error("刷新当前access_token失败", ex);        return null;      }    }    #endregion    #region 第三步，获取用户基本信息    /// <summary>    /// 第三步，获取基本信息    /// </summary>    public void GetUserInfo()    {      try      {        //1.发送get请求        string url = GetUserInfoUrl();        string result = NetHelper.Get(url);        //2.解析结果        OAuthUser user = JsonConvert.DeserializeObject<OAuthUser>(result);        if (user == null)          throw new Exception("反序列化结果失败，返回内容：" + result);        //3.获取成功        if (OnGetUserInfoSuccess != null)          OnGetUserInfoSuccess(user);      }      catch (Exception ex)      {        Error("第三步、获取用户基本信息异常", ex);      }    }    #endregion    #region 静态方法    /// <summary>    /// 验证授权凭证是否有效    /// </summary>    /// <param name="access_token">access_token</param>    /// <param name="openid">用户针对当前公众号的openid</param>    /// <returns></returns>    public static bool CheckWebAccess_Token(string access_token, string openid)    {      try      {        string url = string.Format("https://api.weixin.qq.com/sns/auth?access_token={0}&openid={1}",       access_token,       openid);        string result = NetHelper.Get(url);        JObject obj = JObject.Parse(result);        int errcode = (int)obj["errcode"];        return errcode == 0;      }      catch (Exception ex)      {        throw new Exception("，" + ex.Message);      }    }    #endregion    #region 获取请求连接    /// <summary>    /// 获取Code的url 地址    /// </summary>    /// <returns></returns>    public string GetCodeUrl()    {      string url = string.Format("https://open.weixin.qq.com/connect/oauth2/authorize?appid={0}&redirect_uri={1}&response_type=code&scope={2}&state=STATE#wechat_redirect",        this.appid,        SecurityHelper.UrlEncode(this.redirect_uri),        this.scope);      return url;    }    /// <summary>    /// 获取access_token的url地址    /// </summary>    /// <returns></returns>    private string GetAccess_TokenUrl()    {      string url = string.Format("https://api.weixin.qq.com/sns/oauth2/access_token?appid={0}&secret={1}&code={2}&grant_type=authorization_code",        this.appid,        this.secret,        this.Code);      return url;    }    /// <summary>    /// 获取刷新AccessToke的地址    /// </summary>    /// <returns></returns>    private string GetReferesh_TokenUrl()    {      string url = string.Format("https://api.weixin.qq.com/sns/oauth2/refresh_token?appid={0}&grant_type=refresh_token&refresh_token={1}",        this.appid,        this.TokenData.refresh_token        );      return url;    }    /// <summary>    /// 获取用户基本信息地址    /// </summary>    /// <returns></returns>    private string GetUserInfoUrl()    {      string url = string.Format("https://api.weixin.qq.com/sns/userinfo?access_token={0}&openid={1}&lang=zh_CN",        this.TokenData.access_token,        this.TokenData.openid);      return url;    }    #endregion    private void Error(string msg, Exception inner)    {      if (this.OnError != null)      {        this.OnError(new Exception(msg, inner));      }    }  }  /// <summary>  /// 授权之后获取用户基本信息  /// </summary>  public class OAuthUser  {    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; }    /// <summary>    /// 用户特权信息，json 数组    /// </summary>    public JArray privilege { get; set; }    public string unionid { get; set; }  }  /// <summary>  /// 获取Access_Token或者刷新返回的数据对象  /// </summary>  public class OAuthAccess_Token  {    public string access_token { get; set; }    public int expires_in { get; set; }    public string refresh_token { get; set; }    /// <summary>    /// 用户针对当前公众号的唯一标识    /// 关注后会产生，返回公众号下页面也会产生    /// </summary>    public string openid { get; set; }    public string scope { get; set; }    /// <summary>    /// 当前用户的unionid，只有在用户将公众号绑定到微信开放平台帐号后    /// </summary>    public string unionid { get; set; }  }}