public class CheckSession implements ActionFilter {

** @Inject **
** private Dao dao;**
private String name;
private String path;

public CheckSession(String name, String path) {
    this.name = name;
    this.path = path;
}

public View match(ActionContext context) {
    HttpSession session = Mvcs.getHttpSession(false);
    if (session == null || null == session.getAttribute(name))
        return new ServerRedirectView(path);
    return null;
}

}