/// <summary>
/// 获取微信授权登录地址
/// </summary>
public void GetOAuthUrl()
{
string returnurl = Query <string>("returnurl");
string redirectUri = _domianName + "/WeiXinApi/WxOAuth?returnurl=" + returnurl; //你的回调地址,通过returnurl参数携带其他参数
string url = WxHelper.GetAuthorizeUrl(redirectUri); //微信授权登录地址，会携带code跳转到回调
Write(url, true);
}
public async Task OnAuthorizationAsync(AuthorizationFilterContext context)
{
IServiceProvider serviceProvider = context.HttpContext.RequestServices;
ILogger <WxPublicAccountOAuthFilter> logger = serviceProvider.GetRequiredService <ILogger <WxPublicAccountOAuthFilter> >();
//通过判断Cookie（网页授权Token【115】分钟）是否存在发起跳转获得code
logger.LogDebug($"WeChatOAuthFilter Begin {context.HttpContext.Request.Path}");
switch (OAuthLevel)
{
case OAuthLevels.OpenId:
if (context.HttpContext.Request.Cookies.ContainsKey(WxConsts.COOKIE_WX_OPENID))
{
return;
}
break;
case OAuthLevels.OpenIdAndToken:
case OAuthLevels.OpenIdAndUserInfo:
if (context.HttpContext.Request.Cookies.ContainsKey(WxConsts.COOKIE_WX_OPENID) && context.HttpContext.Request.Cookies.ContainsKey(WxConsts.COOKIE_WX_WEBTOKEN))
{
return;
}
break;
default:
break;
}
HttpRequest request = context.HttpContext.Request;
string code = request.Query["code"].ToString();
string state = request.Query["state"].ToString();
//TODO:验证Token，过期自动刷新
#region 如果是从微信验证页面跳转回来，根据Code和State拿到OpenId等信息
if (!string.IsNullOrEmpty(code) && !string.IsNullOrEmpty(state))
{
logger.LogDebug($"从微信验证页面跳转回来... code:{code}\tstate:{state}");
WxFuncs weChatFuncs = serviceProvider.GetRequiredService <WxFuncs>();
IOauth2Api oauth2Api = serviceProvider.GetRequiredService <IOauth2Api>();
WxPublicAccountOption option = weChatFuncs.GetWeChatOptions();
//通过code换取access_token,Code只能用一次
//网页授权接口调用凭证,注意：此access_token与基础支持的access_token不同
OAuthAccessTokenApiResult result = await oauth2Api.GetAccessTokenAsync(option.AppId, option.AppSecret, code);
result.EnsureSuccess();
logger.LogDebug($"AccessToken:{result.AccessToken}");
IResponseCookies cookies = context.HttpContext.Response.Cookies;
cookies.Append(WxConsts.COOKIE_WX_OPENID, result.OpenId, new CookieOptions()
{
Path = "/",
Expires = DateTimeOffset.Now.AddDays(30),
HttpOnly = true,
IsEssential = true,
});
cookies.Append(WxConsts.COOKIE_WX_WEBTOKEN, result.AccessToken, new CookieOptions()
{
Path = "/",
Expires = DateTimeOffset.Now.AddMinutes(115),
HttpOnly = true,
IsEssential = true,
});
context.HttpContext.Items[WxConsts.COOKIE_WX_OPENID] = result.OpenId;
context.HttpContext.Items[WxConsts.COOKIE_WX_WEBTOKEN] = result.AccessToken;
logger.LogDebug("微信网页授权完成...");
return;
}
#endregion 如果是从微信验证页面跳转回来，根据Code和State拿到OpenId等信息
else if (!context.HttpContext.Request.Cookies.ContainsKey(WxConsts.COOKIE_WX_OPENID) || !context.HttpContext.Request.Cookies.ContainsKey(WxConsts.COOKIE_WX_WEBTOKEN))
{
string redirectUrl = UriHelper.GetDisplayUrl(request);
WxFuncs weChatFuncs = serviceProvider.GetRequiredService <WxFuncs>();
WxPublicAccountOption option = weChatFuncs.GetWeChatOptions();
//获取授权Url
string url = WxHelper.GetAuthorizeUrl(redirectUrl, _state, option.AppId, OAuthLevel == OAuthLevels.OpenIdAndUserInfo ? OAuthScopes.snsapi_userinfo : OAuthScopes.snsapi_base);
logger.LogDebug($"跳转至微信服务器获取授权...{Environment.NewLine}RedirectUrl：{redirectUrl}{Environment.NewLine}AuthUrl:{url}");
context.Result = new RedirectResult(url);
}
else
{
logger.LogError($"授权出错，请检查...{request.Path}");
context.Result = new ContentResult {
Content = "授权出错，请检查！"
};
}
}
