JFinal freemarker 取不出session 问题?报错

@JFinal  freemarker 去session报错Expression Session is undefined

1. 在JFinalConfig的继承类中添加了SessionInViewInterceptor

public void configInterceptor(Interceptors interceptor) {
        interceptor.add(new SessionInViewInterceptor());
    }

2.在controller类中添加了设置session的方法

@Before({ Restful.class, SessionInViewInterceptor.class })
public class LoginController extends Controller {

public void save() {

setSessionAttr(CareConst.SESSION_CURRENT_USER, account);

}

}

3 freemarker页面取不出session

${Session["session_user"].email}