1 <?php 2 class CWebApplication extends CApplication { 3     public $controllerNamespace; 4     private $_controllerPath; 5     private $_viewPath; 6     private $_systemViewPath; 7     private $_controller; 8     public $controllerMap=array(); 9     public function processRequest() {//开始执行请求10         //获取urlManager组件，解析请求，得到controller/action这种格式的string,11         //并且将隐藏参数与请求的参数一一对应，匹配起来，写入$_REQUEST中12         $route = $this->getUrlManager ()->parseUrl ($this->getRequest());13         $this->runController ( $route );14     }15     public function getRequest() {//获取request组件16         return $this->getComponent ( 'request' );17     }18     protected function registerCoreComponents() {//注册核心组件19         parent::registerCoreComponents ();20     }21     //执行contronller22     public function runController($route) {23         if (($ca = $this->createController ( $route )) !== null) {24             list ( $controller, $actionID ) = $ca;25             $oldController = $this->_controller;26             $this->_controller = $controller;27             $controller->init ();//钩子,在执行action方法前调用，子类去实现28             $controller->run ( $actionID );//开始转入controller类中action方法的执行29             $this->_controller = $oldController;30         }31     }32     //创建controller类实例,从controller/action这种格式的string中解析出$controller, $actionID 33     public function createController($route, $owner = null) {34         if ($owner === null)35             $owner = $this;36         if (($route = trim ( $route, '/' )) === '')37             $route = $owner->defaultController;38 39         $route .= '/';40         while ( ($pos = strpos ( $route, '/' )) !== false ) {41             $id = substr ( $route, 0, $pos );42             if (! preg_match ( '/^w+$/', $id ))43                 return null;44             $id = strtolower ( $id );45             $route = ( string ) substr ( $route, $pos + 1 );46             if (! isset ( $basePath ))             // first segment47             {48                 $basePath = $owner->getControllerPath ();49                 $controllerID = '';50             } else {51                 $controllerID .= '/';52             }53             $className = ucfirst ( $id ) . 'Controller';54             $classFile = $basePath . DIRECTORY_SEPARATOR . $className . '.php';55 56             if (is_file ( $classFile )) {57                 if (! class_exists ( $className, false ))58                     require ($classFile);59                 if (class_exists ( $className, false ) && is_subclass_of ( $className, 'CController' )) {60                     $id [0] = strtolower ( $id [0] );61                     return array (62                             new $className ( $controllerID . $id, $owner === $this ? null : $owner ),63                             $this->parseActionParams ( $route )64                     );65                 }66                 return null;67             }68             $controllerID .= $id;69             $basePath .= DIRECTORY_SEPARATOR . $id;70         }71     }72     protected function parseActionParams($pathInfo) {73         if (($pos = strpos ( $pathInfo, '/' )) !== false) {74             $manager = $this->getUrlManager ();//再次获取urlManager,在上面第一次调用中已经导入。75             $manager->parsePathInfo ( ( string ) substr ( $pathInfo, $pos + 1 ) );76             $actionID = substr ( $pathInfo, 0, $pos );77             return $manager->caseSensitive ? $actionID : strtolower ( $actionID );78         } else79             return $pathInfo;80     }81     public function getControllerPath() {82         if ($this->_controllerPath !== null)83             return $this->_controllerPath;84         else85             return $this->_controllerPath = $this->getBasePath () . DIRECTORY_SEPARATOR . 'controllers';86     }87     //两个钩子,子类去实现88     public function beforeControllerAction($controller, $action) {89         return true;90     }91     public function afterControllerAction($controller, $action) {92     }93     protected function init() {94         parent::init ();95     }96 }