ASP.NET与ASP.NET Core用户验证Cookie并存解决方案

来源:转载

在你将现有的用户登录(Sign In)站点从ASP.NET迁移至ASP.NET Core时,你将面临这样一个问题——如何让ASP.NET与ASP.NET Core用户验证Cookie并存,让ASP.NET应用与ASP.NET Core应用分别使用各自的Cookie?因为ASP.NET用的是FormsAuthentication,ASP.NET Core用的是claims-based authentication,而且它们的加密算法不一样。


我们采取的解决方法是在ASP.NET Core中登录成功后,分别生成2个Cookie,同时发送给客户端。


生成ASP.NET Core的基于claims-based authentication的验证Cookie比较简单,示例代码如下:



var claimsIdentity = new ClaimsIdentity(new Claim[] { new Claim(ClaimTypes.Name, loginName) }, "Basic");
var claimsPrincipal = new ClaimsPrincipal(claimsIdentity);
await context.Authentication.SignInAsync(_cookieAuthOptions.AuthenticationScheme, claimsPrincipal);

生成ASP.NET的基于FormsAuthentication的验证Cookie稍微麻烦些。


首先要用ASP.NET创建一个Web API站点,基于FormsAuthentication生成Cookie,示例代码如下:



public IHttpActionResult GetAuthCookie(string loginName, bool isPersistent)
{
var cookie = FormsAuthentication.GetAuthCookie(loginName, isPersistent);
return Json(new { cookie.Name, cookie.Value, cookie.Expires });
}

然后在ASP.NET Core登录站点中写一个Web API客户端获取Cookie,示例代码如下:



public class UserServiceAgent
{
private static readonly HttpClient _httpClient = new HttpClient();
public static async Task<Cookie> GetAuthCookie(string loginName, bool isPersistent)
{
var response = await _httpClient.GetAsync(url);
response.EnsureSuccessStatusCode();
return await response.Content.ReadAsAsync<Cookie>();
}
}

最后在ASP.NET Core登录站点的登录成功后的处理代码中专门向客户端发送ASP.NETFormsAuthentication的Cookie,示例代码如下:



var cookie = await _userServiceAgent.GetAuthCookie(loginName, isPersistent);
var options = new CookieOptions()
{
Domain = _cookieAuthOptions.CookieDomain,
HttpOnly = true
};
if (cookie.Expires > DateTime.Now)
{
options.Expires = cookie.Expires;
}
context.Response.Cookies.Append(cookie.Name, cookie.Value, options);

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