我使用 spring security3 和 spring mvc3 来构建一个 web 项目。有一个名为 index.jsp 的页面,登录用户名和在线用户数将显示在此屏幕的顶部。登录系统有两种方式:
- 从登录页面,使用'j_spring_security_check'的默认配置帖子
- 使用手动身份验证的ajax登录
当我使用登录页面登录索引页面时,在线信息计数和用户名都正确显示。但是当我使用ajax登录(手动验证)时,出现问题:在线用户数没有更新,它总是显示0,而用户名可以正常显示。控制器部分:
@Autowired
@Qualifier("authenticationManager")
AuthenticationManager authenticationManager;
@Autowired
SecurityContextRepository repository;
@RequestMapping(value="/ajaxLogin")
@ResponseBody
public String performLogin(
@RequestParam("j_username") String username,
@RequestParam("j_password") String password,
HttpServletRequest request, HttpServletResponse response) {
UsernamePasswordAuthenticationToken token = new UsernamePasswordAuthenticationToken(username, password);
try {
Authentication auth = authenticationManager.authenticate(token);
SecurityContextHolder.getContext().setAuthentication(auth);
repository.saveContext(SecurityContextHolder.getContext(), request, response);
logger.info("Authentication successfully! ");
return "{\"status\": true}";
} catch (BadCredentialsException ex) {
return "{\"status\": false, \"error\": \"Bad Credentials\"}";
}
}
弹簧安全.xml
<beans:beans xmlns="http://www.springframework.org/schema/security"
xmlns:beans="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.0.3.xsd">
<http auto-config="true" use-expressions="true">
<intercept-url pattern="/login" access="permitAll" />
<intercept-url pattern="/index" access="permitAll" />
<form-login login-page="/login" default-target-url="/index"
authentication-failure-url="/loginfailed" />
<logout logout-success-url="/logout" />
<session-management invalid-session-url="/index">
<concurrency-control max-sessions="1"
error-if-maximum-exceeded="false" />
</session-management>
</http>
<authentication-manager alias="authenticationManager">
<authentication-provider>
<jdbc-user-service data-source-ref="dataSource"
users-by-username-query="
select login_id,login_pwd, is_enabled
from t_user where login_id=?"
authorities-by-username-query="
select u.login_id, r.authority from t_user u, t_roles r
where u.u_id = r.u_id and u.login_id =? " />
</authentication-provider>
</authentication-manager>
我用来获取在线登录用户数的方法:
public class BaseController {
protected Logger logger = Logger.getLogger(this.getClass());
@Autowired
SessionRegistry sessionRegistry;
@ModelAttribute("numUsers")
public int getNumberOfUsers() {
logger.info("in getNumberOfUsers() ...");
return sessionRegistry.getAllPrincipals().size();
}
}
用于显示登录用户名的代码:
<div>
<security:authorize ifAllGranted="ROLE_USER">
<p><a href="#TODO">Welcome <security:authentication property="principal.username" />!</a>
<a href="<c:url value="/j_spring_security_logout" />">Logout</a></p>
</security:authorize>
</div>
用于显示登录用户数的代码:
<div style="color:#3CC457">
${numUsers} user(s) are logged in!
</div>
我猜是因为当我手动进行身份验证时,spring security 不会为用户创建新会话。我通过编写自定义的 SessionCounterListener 来验证它。
public class SessionCounterListener implements HttpSessionListener {
private Logger logger = Logger.getLogger(this.getClass());
private static int totalActiveSessions;
public static int getTotalActiveSession(){
return totalActiveSessions;
}
@Override
public void sessionCreated(HttpSessionEvent event) {
totalActiveSessions++;
logger.info("sessionCreated - add one session into counter" + event.getSession().getId());
}
@Override
public void sessionDestroyed(HttpSessionEvent event) {
totalActiveSessions--;
logger.info("sessionDestroyed - deduct one session from counter" + event.getSession().getId());
}
}
以下是操作序列的日志文件的关键内容:正常登录 -> 正常注销 -> ajax 登录 -> ajax 注销。
sessionDestroyed - deduct one session 1spueddcmdao019udc43k3uumw
sessionCreated - add one session 14nro6bzyjy0x1jtvnqjx31v1
sessionDestroyed - deduct one session 14nro6bzyjy0x1jtvnqjx31v1
sessionCreated - add one session e6jqz5qy6412118iph66xvaa1
实际上,ajax 登录/注销没有给出任何输出。
那么现在,我怎样才能获得正确的登录用户数?为什么不同的身份验证方式有不同的方法来处理会话?任何帮助将不胜感激。