session.invalidate（）的奇怪问题

Question

我在登录和注销时遇到奇怪的问题。 我已经实现了基于容器的安全性。 我的所有页面上都有Login / Logout链接（通过template.xhtml ），这些链接是否基于后备bean的boolean属性（实际上是isLoggedIn()方法isLoggedIn()呈现或不显示。 同样在支持bean中，我有方法logout，这是Logout链接的操作（它是h:commandLink ）。 注销方法返回String ，该String通过隐式JSF 2.0导航重定向到登录页面。 现在，当我部署应用程序时，浏览到我的页面，它显示index.xhtml 。 从那里我进入登录页面。 我将用户名/密码单击“登录”，它使我登录。但是现在我单击“注销”，它调用提到的支持bean注销方法，该方法执行以下操作：

public String logout() {
    HttpSession session = (HttpSession) FacesContext.getCurrentInstance().getExternalContext().getSession(false);
   //HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
   try {
       session.invalidate();
       //request.logout();
   } catch (Exception ex) {
       Logger.getLogger(PostController.class.getName()).log(Level.SEVERE, null, ex);
   }
   return "/ssl/login?faces-redirect=true";
}

现在，单击“注销”后，当我再次输入用户名/密码并单击“登录”时，它会将我重定向到登录页面。 但是随后发生了奇怪的事情，因为它显示了我的index.xhtml但我尚未登录。我必须再次进入登录页面，再次键入凭据才能最终登录。这仅在我使用session.invalidate()以支持bean logout()方法。 当我使用request.logout()一切正常。 有什么问题？

编辑：isLoggedIn看起来像这样，但是我不认为这是一个问题，因为当我尝试浏览到登录页面时，我创建了将我重定向到index.xhtml的过滤器（仅当我登录时）。 而且这不会发生。

public boolean isLoggedIn() {
    HttpServletRequest request = (HttpServletRequest) FacesContext.getCurrentInstance().getExternalContext().getRequest();
    if(request.getUserPrincipal() != null)
        return true;
    else
        return false;
}

编辑：这是考虑HTTP标头的方案：我请求login.xhtml：

GET /blog-war/ssl/login.xhtml;jsessionid=edccb9f9a1c5fc77dbd7fc86f55b HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:8080/blog-war/
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Location: https://localhost:8181/blog-war/ssl/login.xhtml
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 197
Date: Sat, 04 Sep 2010 22:27:47 GMT

暂时移动，因此浏览器提出了另一个请求：

GET /blog-war/ssl/login.xhtml HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:8080/blog-war/
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 200 OK
X-Powered-By: Servlet/3.0, JSF/2.0
Server: GlassFish Server Open Source Edition 3.0.1
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/html;charset=UTF-8
Content-Length: 1256
Date: Sat, 04 Sep 2010 22:27:47 GMT

我填写用户名/密码，然后单击登录：

POST /blog-war/ssl/j_security_check HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: https://localhost:8181/blog-war/ssl/login.xhtml
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Location: https://localhost:8181/blog-war/
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 182
Date: Sat, 04 Sep 2010 22:40:01 GMT

它被重定向到index.xhtml：

GET /blog-war/ HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: https://localhost:8181/blog-war/ssl/login.xhtml
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Pragma: No-cache
Cache-Control: no-cache
Expires: Thu, 01 Jan 1970 01:00:00 CET
Location: http://localhost:8080/blog-war/
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 181
Date: Sat, 04 Sep 2010 22:40:01 GMT

再次重定向，因为我有切换到https-http的过滤器，反之亦然（我只希望在https中使用login.xhtml）：

GET /blog-war/ HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 200 OK
X-Powered-By: Servlet/3.0, JSF/2.0
Server: GlassFish Server Open Source Edition 3.0.1
Pragma: no-cache
Cache-Control: no-cache, no-store, must-revalidate
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Content-Type: text/html;charset=UTF-8
Content-Length: 4002
Date: Sat, 04 Sep 2010 22:40:02 GMT

现在，我已成功登录，呈现了注销链接，这意味着支持bean isLoggedIn返回true。 现在，我单击注销，它在支持bean的logout（）方法中调用session.invalidate（）：

POST /blog-war/index.xhtml HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:8080/blog-war/
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0, JSF/2.0
Server: GlassFish Server Open Source Edition 3.0.1
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Location: http://localhost:8080/blog-war/ssl/login.xhtml
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 196
Date: Sat, 04 Sep 2010 22:48:34 GMT

重定向到登录页面注销返回字符串“ / ssl / login？faces-redirect = true”，因此我们去了：

GET /blog-war/ssl/login.xhtml HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:8080/blog-war/
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Location: https://localhost:8181/blog-war/ssl/login.xhtml
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 197
Date: Sat, 04 Sep 2010 22:48:34 GMT

另一个重定向登录页面应位于https（过滤器正在运行:)）：

GET /blog-war/ssl/login.xhtml HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: http://localhost:8080/blog-war/
Cookie: JSESSIONID=edccb9f9a1c5fc77dbd7fc86f55b

响应：

HTTP/1.1 200 OK
X-Powered-By: Servlet/3.0, JSF/2.0
Server: GlassFish Server Open Source Edition 3.0.1
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Set-Cookie: JSESSIONID=eefdcda45337b9c897de2a0e95e3; Path=/blog-war; Secure
Content-Type: text/html;charset=UTF-8
Content-Length: 1256
Date: Sat, 04 Sep 2010 22:48:35 GMT

因此，这是正常的事件流。 现在异常：）我已经在登录页面上，所以我重新输入用户名/密码并单击登录：

POST /blog-war/ssl/j_security_check HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: https://localhost:8181/blog-war/ssl/login.xhtml
Cookie: JSESSIONID=eefdcda45337b9c897de2a0e95e3

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Location: https://localhost:8181/blog-war/
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 182
Date: Sat, 04 Sep 2010 22:55:46 GMT

重定向到索引：

GET /blog-war/ HTTP/1.1
Host: localhost:8181
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive
Referer: https://localhost:8181/blog-war/ssl/login.xhtml
Cookie: JSESSIONID=eefdcda45337b9c897de2a0e95e3

响应：

HTTP/1.1 302 Moved Temporarily
X-Powered-By: Servlet/3.0
Server: GlassFish Server Open Source Edition 3.0.1
Pragma: No-cache
Cache-Control: no-cache
Expires: Thu, 01 Jan 1970 01:00:00 CET
Location: http://localhost:8080/blog-war/
Content-Type: text/html;charset=ISO-8859-1
Content-Language: en-GB
Content-Length: 181
Date: Sat, 04 Sep 2010 22:55:47 GMT

再次，筛选器重定向到index.xhtml的http：

GET /blog-war/ HTTP/1.1
Host: localhost:8080
User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; pl; rv:1.9.2.8) Gecko/20100722 Firefox/3.6.8
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language: pl,en-us;q=0.7,en;q=0.3
Accept-Encoding: gzip,deflate
Accept-Charset: ISO-8859-2,utf-8;q=0.7,*;q=0.7
Keep-Alive: 115
Connection: keep-alive

响应：

HTTP/1.1 200 OK
X-Powered-By: Servlet/3.0, JSF/2.0
Server: GlassFish Server Open Source Edition 3.0.1
Cache-Control: no-cache, no-store, must-revalidate
Pragma: no-cache
Expires: Thu, 01 Jan 1970 00:00:00 GMT
Set-Cookie: JSESSIONID=ef675cbb9747063c235fdb44137e; Path=/blog-war
Content-Type: text/html;charset=UTF-8
Content-Length: 3410
Date: Sat, 04 Sep 2010 22:55:48 GMT

此时未呈现注销链接，这意味着我们还没有登录？ 作为响应，有set-cookie，这是否意味着服务器将我注销了？ 再次进入登录页面后，它将从顶部重新开始。 我还可以插入服务器日志，这与正常登录和异常登录情况有些不同。 还有关于Expires的回应，为什么是1970年1月？ 我真的很困惑

Answer 1

由于使用容器管理的安全性时，如果不登录就不能访问受限页面，因此我强烈怀疑isLoggedIn()方法错误地返回了false ，这使您看起来好像没有登录。至少看起来像这样：

public boolean isLoggedIn() {
    return FacesContext.getCurrentInstance()
        .getExternalContext().getUserPrincipal() != null;
}

---

更新 ：正确，当在HTTPS上下文中创建cookie（即具有Secure标志）时，从HTTPS切换到HTTP时，cookie丢失。 但是，如果cookie是在HTTP上下文中创建的（即没有Secure标志），则该cookie在HTTP和HTTPS上下文中都将保持可用。 这是根据RFC 2965 cookie规范（请查看Secure标志的描述）。

除了使用HttpServletRequest#logout() ，另一种解决方案是在注销后的重定向期间立即创建cookie，而不是仅在通过HTTPS请求登录页面时才创建cookie。 您可以仅通过请求HttpSession隐式创建一个新的cookie

Answer 2

如果使用session.invalidate（），则isLoggedIn（）的正确测试是userPrincipal（）！= null && session.isRequestedSessionValid（）。 否则，注销后的页面将直接显示您已登录。

您不应该自己重定向到登录页面。 CMA应该为您做到这一点。 只需重定向到需要登录的页面即可。