java拼三级菜单树json2

private static boolean regexCheckStr(String regexStr, String checkStr)
    {
        //获得Pattern对象
        Pattern p = Pattern.compile(regexStr);
        //获得Matcher对象
        Matcher m = p.matcher(checkStr);
        //返回区别值
        boolean isOk = m.matches();;
        return isOk;
    }
   
    public List<Menu> getMenu(){
        List<Menu> l = new ArrayList<Menu>();
       
        Menu m1 = new Menu("901","学校1","0");
        Menu m2 = new Menu("902","学校2","0");
       
        Menu m3 = new Menu("90101","学校1班级1","901");
        Menu m4 = new Menu("90102","学校1班级2","901");
       
        Menu m5 = new Menu("90201","学校2班级1","902");
        Menu m6 = new Menu("90202","学校2班级2","902");
       
        Menu m7 = new Menu("9010101","学校1班级1组1","90101");
        Menu m8 = new Menu("9010102","学校1班级1组2","90101");
       
        l.add(m1);
        l.add(m2);
        l.add(m3);
        l.add(m4);
        l.add(m5);
        l.add(m6);
        l.add(m7);
        l.add(m8);
       
        return l;
    }