JSF豆和对象

Question

我有一个JSF项目，我正在尝试执行一个登录页面，在我的项目中，我有一个托管bean，它具有用于用户名和密码的验证方法，我有一个带有设定器和获取器的BEAN类，其中包含用于数据库的用户信息。例如（用户名，密码，ISARTIVE，全名），我的问题是，如果他们在XHTML页面中，我该如何调用JSF EL表达式中的用户信息，如果他们在XHTML页面中不在托管豆吗？

这是我的java bean：

@Table(name="students_info")
public class User {
    @Column(name="std_record_id")
    private int id;
    @Column(name="std_id")
    private String userId;
    @Column(name="first_name")
    private String firstName;
    @Column(name="web_password")
    private String password;
    public int getId() {
        return id;
    }
    public void setId(int id) {
        this.id = id;
    }

    public String getFirstName() {
        return firstName;
    }
    public void setFirstName(String firstName) {
        this.firstName = firstName;
    }
    public String getUserId() {
        return userId;
    }
    public void setUserId(String userId) {
        this.userId = userId;
    }
    public String getPassword() {
        return password;
    }
    public void setPassword(String password) {
        this.password = password;
    }
}

这是我的mblogin：

    @ManagedBean
    @SessionScoped
    public class MBLogin {
        User user = new User();
        LoginDAO loginDao = new LoginDAO();
        public String validteStudent() {
            boolean valid = loginDao.validateStudent(user.getUserId(), user.getUserId());
            if (valid) {
                HttpSession session = SessionUtils.getSession();
                session.setAttribute("username", user);
                return "student";
            } else {
                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN,
                        "Incorrect Username and Passowrd", "Please enter correct username and Password"));
                return "login";
            }
        }
    }

Answer 1

为用户添加getter：

@ManagedBean
    @SessionScoped
    public class MBLogin {
        User user = new User();
        LoginDAO loginDao = new LoginDAO();
        public String validteStudent() {
            boolean valid = loginDao.validateStudent(user.getUserId(), user.getUserId());
            if (valid) {
                HttpSession session = SessionUtils.getSession();
                session.setAttribute("username", user);
                return "student";
            } else {
                FacesContext.getCurrentInstance().addMessage(null, new FacesMessage(FacesMessage.SEVERITY_WARN,
                        "Incorrect Username and Passowrd", "Please enter correct username and Password"));
                return "login";
            }
        }
        public User getUser() {
            return user;
        }
    }

然后在您的XHTML中可以这样称呼：
#{user.id}，#{user.firstName}