关于zendframework的类自动加载,该如何处理
关于zendframework的类自动加载
目录结构
- HTML code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> zf-demo application controller IndexController.php models User.php services views Bootstrap.php
其中user.php的类名是Model_User,在IndexController.php中有这么一句调用$user = new Model_User();
执行时会报错
Fatal error: Class 'Model_User' not found in D:\lamp\sites\zf-demo\application\controllers\IndexController.php on line 132
上网搜索后得到答案
在Bootstarp.php中加入_initAutoload方法
Bootstrap.php代码
- PHP code
<!-- Code highlighting produced by Actipro CodeHighlighter (freeware) http://www.CodeHighlighter.com/ --> <?php class Bootstrap extends Zend_Application_Bootstrap_Bootstrap { protected function _initAutoload() { $moduleLoader = new Zend_Application_Module_Autoloader(array( 'namespace' => '', 'basePath' => APPLICATION_PATH)); /** auto load */ $autoloader = Zend_Loader_Autoloader::getInstance(); $autoloader->setFallbackAutoloader(true); return $moduleLoader; } }
再次执行,就能成功加载user类了.
问题:
按我的理解,zend的自动加载机制,是把类名中的下划线替换成路径分隔符,然后根据include_path的顺序去加载类
如果是这样的话,Model_User会转换成Model/User.php来进行加载,但是目录中没有model这个文件夹,只有models,为什么也能加载成功?,_initAutoload到底做了什么?谁能解释一下?
------解决方案--------------------
------解决方案--------------------
通常这种不规则的命名空间是用Zend_Loader_Autoloader_Resource的。为了方便,框架应用本身的结构继承实现了Zend_Application_Module_Autoloader,简化了操作,看源代码就知道了
以下类的源代码
/**
* Resource loader for application module classes
*
* @uses Zend_Loader_Autoloader_Resource
* @category Zend
* @package Zend_Application
* @subpackage Module
* @copyright Copyright (c) 2005-2011 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Application_Module_Autoloader extends Zend_Loader_Autoloader_Resource
{
/**
* Constructor
*
* @param array|Zend_Config $options
* @return void
*/
public function __construct($options)
{
parent::__construct($options);
$this->initDefaultResourceTypes();
}
/**
* Initialize default resource types for module resource classes
*
* @return void
*/
public function initDefaultResourceTypes()
{
$basePath = $this->getBasePath();
$this->addResourceTypes(array(
'dbtable' => array(
'namespace' => 'Model_DbTable',
'path' => 'models/DbTable',
),
'mappers' => array(
'namespace' => 'Model_Mapper',
'path' => 'models/mappers',
),
'form' => array(
'namespace' => 'Form',
'path' => 'forms',
),
'model' => array(
'namespace' => 'Model',
'path' => 'models',
),
'plugin' => array(
'namespace' => 'Plugin',
'path' => 'plugins',
),
'service' => array(
'namespace' => 'Service',
'path' => 'services',

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