Spring安全错误记录用户

我使用SpringMVC[版本:2.5]和Security[版本:2.0.4]。

我的问题是:

首先使用usera登录名和密码登录我的应用程序->确定

注销usera,userb登录。

userb登录+密码工作正常,我在app中,userb角色打开。[如果他不是管理员,则无法访问管理会话]

然而!

我使用此代码从数据库获取有关登录用户的数据: userejb.findUserByUsername(SecurityContextHolder.getContext().getAuthentication().getName());

我的用户不是userb而是usera…

我怎么修?我做错了什么?

我的安全配置:

<bean id="userDetailsService" class="pl.tzim.jlp.security.CustomUserDetailsServiceImpl" />
<http auto-config='true'>
    <!-- login panel dostepny dla wszystkich chetnych!-->
    <intercept-url pattern="/login.action" filters="none"/>
    <intercept-url pattern="/index.jsp" filters="none"/>
    <intercept-url pattern="/CS/**" filters="none" />
    <intercept-url pattern="/JS/**" filters="none" />
    <intercept-url pattern="/grafiki/**" filters="none" />
    <intercept-url pattern="/free/**" access="" />
    <intercept-url pattern="/admin/**" access="ROLE_ADMIN"/>
    <intercept-url pattern="/teacher/**" access="ROLE_TEACHER, ROLE_ADMIN"/>
    <intercept-url pattern="/all/**" access="ROLE_STUDENT, ROLE_TEACHER, ROLE_ADMIN"/>
    <intercept-url pattern="/student/**" access="ROLE_STUDENT, ROLE_TEACHER, ROLE_ADMIN"/>
    <intercept-url pattern="/login/**" access="ROLE_STUDENT, ROLE_TEACHER, ROLE_ADMIN" />
    <intercept-url pattern="/*" access="ROLE_STUDENT, ROLE_TEACHER, ROLE_ADMIN" />
    <form-login login-page='/free/login.action' authentication-failure-url="/free/login.action?why=error" default-target-url="/free/index.action"/>
    <logout logout-success-url="/free/login.action?why=logout"/>
    <concurrent-session-control max-sessions="99" exception-if-maximum-exceeded="true"/>
</http>    
<authentication-provider user-service-ref='userDetailsService' />

我的LoginUser类和方法:

@SessionAttributes(types = {CustomUser.class}, value = "{logedUser}")
public class CustomUserDetailsServiceImpl implements UserDetailsService {
    @Autowired
    public UserDAO userdao;
    public CustomUser logedUser; 
    @Transactional(readOnly = true)
    @Override
    public CustomUser loadUserByUsername(String username) throws UsernameNotFoundException, DataAccessException {
        try {
            pl.tzim.jlp.model.user.User user = this.userdao.findUserByUsername(username);
            String password = user.getPassword();
            String role = user.getAuthority().getRolename();
            boolean enabled = true;
            logedUser = new CustomUser(user.getId(), username, password, enabled, new GrantedAuthority[]{new GrantedAuthorityImpl(role)});
            return logedUser; 
        } catch (Exception e) {
            e.printStackTrace();
            return null;
        }
    }
}

public class CustomUser extends User{
    private Long id;
    public CustomUser(Long id, String username, String password, boolean isEnabled, GrantedAuthority[] authorities){
        super(username, password, isEnabled, true, true, true, authorities);
        this.setId(id);
    }
    public Long getId() {
        return id;
    }
    public void setId(Long id) {
        this.id = id;
    }
}