Struts2 jQuery UI dynamic Menu from Action List

How can I generate dynamic menu & menu items from a list generated at Action? I tried this approach but it is generating only main menu but not sub-menus.

Action class:

private List<String> menuList = new ArrayList<String>();
public String execute(){
    menuList.add("Menu1");
    menuList.add("Menu2");
    menuList.add("Menu3");
    menuList.add("Menu4");
    return "success";
}
public List<String> getMenuList() {
    return menuList;
}
public void setMenuList(List<String> menuList) {
    this.menuList = menuList;
}

JSP:

<sj:menu cssStyle="width:50%" list="menuList" />

What can i do to get Menu with menu items?

Example classes structure:

public class Menu {
    private String id;
    private List<MenuItem> menuItems;

    public Menu(String id, List<MenuItem> menuItems){
        this.id = id;
        this.menuItems = menuItems;
    }

    public String getId() {
        return id;
    }
    public void setId(String id) {
        this.id = id;
    }
    public List<MenuItem> getMenuItems() {
        return menuItems;
    }
    public void setMenuItems(List<MenuItem> menuItems) {
        this.menuItems = menuItems;
    }   
}



public class MenuItem {
    private String title;
    private String href;
    private Menu menu;  // submenu

    public MenuItem(String title, String href, Menu menu){
        this.title = title;
        this.href = href;
        this.menu = menu;
    }

    public String getTitle() {
        return title;
    }
    public void setTitle(String title) {
        this.title = title;
    }
    public String getHref() {
        return href;
    }
    public void setHref(String href) {
        this.href = href;
    }
    public Menu getMenu() {
        return menu;
    }
    public void setMenu(Menu menu) {
        this.menu = menu;
    }   
}

How to configure this in JSP page with sj:menu tag?

Answer

The <sj:menu> tag generates a menu from list values, to create submenu you should use <sj:menuItem> in the body of <sj:menu> tag.

Also in the body of <sj:menuItem> you can use <sj:menu> tag.

The detailed explanation and example you can find here.