java - session 感知 : How can I get session attribute from action

Question

我想从一些实现 SessionAware 接口(interface)的操作中访问 session 属性；

我想根据登录用户的类型执行一些测试，它相关的信息存储在 session 的属性中，我可以使用以下代码在我的JSP页面中获取此属性:

<s:property value="%{#session['attribute']}"/> 

我的LoginAction:

public class LoginAction extends ActionSupport implements SessionAware {

    private static final long serialVersionUID = 1L;
    private String userName;
    private String password;

    private Map<String, Object> session;
        private Service service;
        Utilisateur user; 
    // ---------------------------- Log Out register user


    public String logOut() {
        session.remove("loginId");
        session.clear();
        addActionMessage("You Have Been Successfully Logged Out");
        return SUCCESS;
    }

    // ---------------------------- Login register user

    public String loginRegisterUser() {

        service = new ServiceImpl();
         user = service.checkUsernamePassword(userName, password);

        if (user != null) 
        {
            session.put("loginId", userName);
            session.put("mdp", password);
            session.put("role", user.getRole().getRole());
            return "success";
        } 
        else
        {
                addActionError("Please Enter Valid emailId or Password");
            return LOGIN;
        }
    }

    public void setSession(Map<String, Object> map) {
        this.session = map;
    }

如何将它们添加到我的操作类中？

编辑:

我尝试使用以下代码从其他操作中获取它:

public class GestionMissions extends ActionSupport implements  SessionAware, ModelDriven
{
    private Map<String, Object> session;


    @Override
    public void setSession(Map<String, Object> s) {
        this.session = s;

    }

    public String getsession() 
    {
        String test;
        test = (String) session.get("loginId");

        System.out.println(test);
                return "success";

}

Answer 1

session 变量包含在您通过setSession方法获取的映射中，只需调用session.get('attribut')即可获取您想要的值。

Here is a longer explanation with some examples.