阅读背景:

.net实现网站用户登录认证

来源:互联网 

cookie登录后同域名下的网站保持相同的登录状态。

登录

private void SetAuthCookie(string userId, bool createPersistentCookie)
{
  var ticket = new FormsAuthenticationTicket(2, userId, DateTime.Now, DateTime.Now.AddDays(7), true, "", FormsAuthentication.FormsCookiePath);
  string ticketEncrypted = FormsAuthentication.Encrypt(ticket);

  HttpCookie cookie;
  if (createPersistentCookie)//是否在设置的过期时间内一直有效
  {
    cookie = new HttpCookie(FormsAuthentication.FormsCookieName, ticketEncrypted)
    {
      HttpOnly = true,
      Path = FormsAuthentication.FormsCookiePath,
      Secure = FormsAuthentication.RequireSSL,
      Expires = ticket.Expiration,
      Domain = "cnblogs.com"//这里设置认证的域名,同域名下包括子域名如aa.cnblogs.com或bb.cnblogs.com都保持相同的登录状态
    };
  }
  else
  {
    cookie = new HttpCookie(FormsAuthentication.FormsCookieName, ticketEncrypted)
    {
      HttpOnly = true,
      Path = FormsAuthentication.FormsCookiePath,
      Secure = FormsAuthentication.RequireSSL,
      //Expires = ticket.Expiration,//无过期时间的,浏览器关闭后失效
      Domain = "cnblogs.com"
    };
  }

  HttpContext.Current.Response.Cookies.Remove(FormsAuthentication.FormsCookieName);
  HttpContext.Current.Response.Cookies.Add(cookie);
}
private v



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