cakephp错误:ItemsController找不到

我对cakephp很陌生。

我的项目名为"catalog"

我正在使用xampp和cakephp 2.3.7版本

我已经创建了controller app/controller/ItemsController.php

class ItemsController extends AppController{
public function index(){
    $this->set('color', 'blue');
}}

我已经创建了View/Items/index.ctp

<?php echo $color  ?>

当我试图在浏览器中访问"catalog/"

et working fine我有一个起始页:CakePHP 2.5.3的发布说明. ................

但当我试图达到我的控制器，如:"目录/项目"出现错误

Missing Controller
Error: ItemsController could not be found.
Error: Create the class ItemsController below in file:         app'Controller'ItemsController.php
<?php
class ItemsController extends AppController {
}
Notice: If you want to customize this error message, create     app'View'Errors'missing_controller.ctp
Stack Trace
APP'webroot'index.php line 108 → Dispatcher->dispatch(CakeRequest, CakeResponse)

谁来帮帮我