java - session.invalidate() 的奇怪问题

标签 java session jsf jsf-2 logout

我在登录和退出时遇到奇怪的问题。我已经实现了基于容器的安全性。我的所有页面上都有登录/注销链接(通过 template.xhtml)，这些链接是否基于支持 bean boolean 属性(它实际上是方法 isLoggedIn())呈现。另外，在支持 bean 中，我有方法 logout，它是注销链接的操作(它是 h:commandLink)。 Logout 方法返回通过隐式 JSF 2.0 导航重定向到登录页面的 String。现在，当我部署应用程序时，我浏览到我的页面，它显示 index.xhtml。从那里我进入登录页面。我输入我的用户名/密码，单击“登录”，它会登录。但现在我单击“注销”，它会调用提到的支持 bean 注销方法，该方法调用执行以下操作:

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，它会将我重定向回登录页面。但奇怪的事情发生了，因为它显示了我的 index.xhtml 但我没有登录。我必须再次进入登录页面，再次重新输入凭据才能最终登录。只有当我在支持 bean logout() 方法中使用 session.invalidate() 时才会发生这种情况。当我使用 request.logout() 时，一切正常。有什么问题吗？

编辑: isLoggedIn 看起来像这样，但我不认为这是一个问题，因为我创建了一个过滤器，当我尝试浏览登录页面时，该过滤器将我(仅当我登录时)重定向到index.xhtml。但这并没有发生。

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 header 的场景: 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

回应:

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，以便浏览器发出另一个请求:

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

回应:

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=edccb9f9a1c5fc77dbd7fc86f55b

回应:

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

回应:

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(我只想要 https 中的 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

回应:

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，呈现注销链接意味着支持 bean isLoggedIn 返回 true。现在我单击 Logout，它会在支持 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

回应:

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”，所以我们去那里:

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

回应:

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，登录页面应为 https(过滤器正在工作:)):

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

回应:

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

所以这是正常的事件流程。现在不正常了:) 我已经在登录页面，因此我重新输入用户名/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

回应:

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

回应:

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

再次过滤器重定向到http以获取index.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

回应:

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

此时注销链接未呈现，是否意味着我们尚未登录？作为响应，有 set-cookie 那么这是否意味着服务器将我注销了？再次进入登录页面后，一切从顶部开始。我还可以插入与正常登录和异常登录场景略有不同的服务器日志。还有关于Expires的响应，为什么是1970年1月？我真的很困惑。

最佳答案

由于在使用容器管理安全性时，您不应该在未登录的情况下访问受限制的页面，因此我强烈怀疑 isLoggedIn() 方法错误地返回 false，这使得您看起来认为您尚未登录。该方法至少应如下所示:

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

更新:正确，当在 HTTPS 上下文中创建 cookie 时(即具有Secure 标志)，那么当从 HTTPS 切换到 HTTP 时，该 cookie 就会丢失。但是，如果 cookie 是在 HTTP 上下文中创建的(即没有Secure 标志)，则 cookie 将在 HTTP 和 HTTPS 上下文中保持可用。这是根据RFC 2965 cookie 规范(检查Secure 标志的描述)。

除了使用 HttpServletRequest#logout() 之外，另一种解决方案是在注销后重定向期间立即创建 cookie，而不是仅在通过 HTTPS 请求登录页面时创建 cookie。您只需请求 HttpSession

即可隐式创建一个新 cookie

关于java - session.invalidate() 的奇怪问题，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/3643564/

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