Zend Framework教程之Zend_Controller_Plugin插件用法详解

本文实例讲述了Zend Framework教程之Zend_Controller_Plugin插件用法。分享给大家供大家参考，具体如下：

通过Zend_Controller_Plugin可以向前端控制器增加附加的功能。便于w一些特殊功能。以下是Zend_Controller_Plugin的简单介绍。

Zend_Controller_Plugin的基本实现

├── Plugin
│   ├── Abstract.php
│   ├── ActionStack.php
│   ├── Broker.php
│   ├── ErrorHandler.php
│   └── PutHandler.php

Zend_Controller_Plugin_Abstract

abstract class Zend_Controller_Plugin_Abstract{ protected $_request; protected $_response; public function setRequest(Zend_Controller_Request_Abstract $request) {  $this->_request = $request;  return $this; } public function getRequest() {  return $this->_request; } public function setResponse(Zend_Controller_Response_Abstract $response) {  $this->_response = $response;  return $this; } public function getResponse() {  return $this->_response; } /**  * Called before Zend_Controller_Front begins evaluating the  * request against its routes.  *  * @param Zend_Controller_Request_Abstract $request  * @return void  */ public function routeStartup(Zend_Controller_Request_Abstract $request) {} /**  * Called after Zend_Controller_Router exits.  *  * Called after Zend_Controller_Front exits from the router.  *  * @param Zend_Controller_Request_Abstract $request  * @return void  */ public function routeShutdown(Zend_Controller_Request_Abstract $request) {} /**  * Called before Zend_Controller_Front enters its dispatch loop.  *  * @param Zend_Controller_Request_Abstract $request  * @return void  */ public function dispatchLoopStartup(Zend_Controller_Request_Abstract $request) {} /**  * Called before an action is dispatched by Zend_Controller_Dispatcher.  *  * This callback allows for proxy or filter behavior. By altering the  * request and resetting its dispatched flag (via  * {@link Zend_Controller_Request_Abstract::setDispatched() setDispatched(false)}),  * the current action may be skipped.  *  * @param Zend_Controller_Request_Abstract $request  * @return void  */ public function preDispatch(Zend_Controller_Request_Abstract $request) {} /**  * Called after an action is dispatched by Zend_Controller_Dispatcher.  *  * This callback allows for proxy or filter behavior. By altering the  * request and resetting its dispatched flag (via  * {@link Zend_Controller_Request_Abstract::setDispatched() setDispatched(false)}),  * a new action may be specified for dispatching.  *  * @param Zend_Controller_Request_Abstract $request  * @return void  */ public function postDispatch(Zend_Controller_Request_Abstract $request) {} /**  * Called before Zend_Controller_Front exits its dispatch loop.  *  * @return void  */ public function dispatchLoopShutdown() {}}

Zend_Controller_Plugin_Abstract声明定义了Zend_Controller运行过程中的几个关键事件位置。用户可以通过指定的方法，对指定位置的请求和相应对象进行相关操作。