thinkphp分组下url路由怎么都不成功，那位帮忙解决一下啊

直接上代码：
'URL_ROUTER_ON'=>true,
//路由规则定义
'URL_ROUTE_RULES'=>array(
//'/^news/:name$/'=>'News/cate',
//'news/:id'=>'/News/read?id=:1',
'news/read/:id'=>'/News/read/:1', //规则路由
),
public function read(){
$id=$_GET['id']+0;
$this->assign('id',$id);
$this->display('info');
}
使用链接访问<a href="<{:U('news/5')}>">news/5</a>