public function index($page=1,$rows=20)    {        $syscode = M('SystemCode'); // 实例化User对象        $count   = $syscode->where('code_state=0')->count();// 查询满足要求的总记录数        $list = $syscode->where('code_state=0')->order('create_time desc')->page($page.','.$rows)->select();        //生成翻页HTML代码        C('VAR_PAGE', 'page');        $pager = new \Think\PageBack($count, $rows, $_REQUEST);        $pager->setConfig('theme', '%FIRST% %UP_PAGE% %LINK_PAGE% %DOWN_PAGE% %END% %HEADER%');        $paginationHtml = $pager->show();        $this->assign('list',$list);// 赋值数据集        $this->assign('page',$paginationHtml);// 赋值分页输出        $this->display();    }