社区
学习
工具库
AI工具
休闲
搜索
简体中文
首页 php教程 php手册 Zend Framework教程之分发器Zend_Controller_Dispatcher用法详解

Zend Framework教程之分发器Zend_Controller_Dispatcher用法详解

WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
WBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWBOYWB
Jun 06, 2016 pm 07:34 PM
framework zend 分发 教程

本文实例讲述了Zend Framework教程之分发器Zend_Controller_Dispatcher用法。分享给大家供大家参考，具体如下： 分发器的具体实现 Zend Framework的分发器Zend_Controller_Dispatcher设计主要有，如下类和接口组成： ├── Dispatcher │ ├── Abstract.p

本文实例讲述了Zend Framework教程之分发器Zend_Controller_Dispatcher用法。分享给大家供大家参考，具体如下：

分发器的具体实现

Zend Framework的分发器Zend_Controller_Dispatcher设计主要有，如下类和接口组成：

├── Dispatcher
│   ├── Abstract.php
│   ├── Exception.php
│   ├── Interface.php
│   └── Standard.php

Zend_Controller_Dispatcher_Interface

定义了分发器提供的基本和标准功能。

interface Zend_Controller_Dispatcher_Interface
{
  public function formatControllerName($unformatted);
  public function formatModuleName($unformatted);
  public function formatActionName($unformatted);
  public function isDispatchable(Zend_Controller_Request_Abstract $request);
  public function setParam($name, $value);
  public function setParams(array $params);
  public function getParam($name);
  public function getParams();
  public function clearParams($name = null);
  public function setResponse(Zend_Controller_Response_Abstract $response = null);
  public function getResponse();
  public function addControllerDirectory($path, $args = null);
  public function setControllerDirectory($path);
  public function getControllerDirectory();
  public function dispatch(Zend_Controller_Request_Abstract $request, Zend_Controller_Response_Abstract $response);
  public function isValidModule($module);
  public function getDefaultModule();
  public function getDefaultControllerName();
  public function getDefaultAction();
}
登录后复制

Zend_Controller_Dispatcher_Abstract

实现了Zend_Controller_Dispatcher_Interface接口，提供了分发器提供的基本和标准功能的抽象父类。

<&#63;php
/** Zend_Controller_Dispatcher_Interface */
require_once 'Zend/Controller/Dispatcher/Interface.php';
abstract class Zend_Controller_Dispatcher_Abstract implements Zend_Controller_Dispatcher_Interface
{
  protected $_defaultAction = 'index';
  protected $_defaultController = 'index';
  protected $_defaultModule = 'default';
  protected $_frontController;
  protected $_invokeParams = array();
  protected $_pathDelimiter = '_';
  protected $_response = null;
  protected $_wordDelimiter = array('-', '.');
  public function __construct(array $params = array())
  {
    $this->setParams($params);
  }
  public function formatControllerName($unformatted)
  {
    return ucfirst($this->_formatName($unformatted)) . 'Controller';
  }
  public function formatActionName($unformatted)
  {
    $formatted = $this->_formatName($unformatted, true);
    return strtolower(substr($formatted, 0, 1)) . substr($formatted, 1) . 'Action';
  }
  public function _verifyDelimiter($spec)
  {
    if (is_string($spec)) {
      return (array) $spec;
    } elseif (is_array($spec)) {
      $allStrings = true;
      foreach ($spec as $delim) {
        if (!is_string($delim)) {
          $allStrings = false;
          break;
        }
      }
      if (!$allStrings) {
        require_once 'Zend/Controller/Dispatcher/Exception.php';
        throw new Zend_Controller_Dispatcher_Exception('Word delimiter array must contain only strings');
      }
      return $spec;
    }
    require_once 'Zend/Controller/Dispatcher/Exception.php';
    throw new Zend_Controller_Dispatcher_Exception('Invalid word delimiter');
  }
  public function getWordDelimiter()
  {
    return $this->_wordDelimiter;
  }
  public function setWordDelimiter($spec)
  {
    $spec = $this->_verifyDelimiter($spec);
    $this->_wordDelimiter = $spec;
    return $this;
  }
  public function getPathDelimiter()
  {
    return $this->_pathDelimiter;
  }
  public function setPathDelimiter($spec)
  {
    if (!is_string($spec)) {
      require_once 'Zend/Controller/Dispatcher/Exception.php';
      throw new Zend_Controller_Dispatcher_Exception('Invalid path delimiter');
    }
    $this->_pathDelimiter = $spec;
    return $this;
  }
  protected function _formatName($unformatted, $isAction = false)
  {
    // preserve directories
    if (!$isAction) {
      $segments = explode($this->getPathDelimiter(), $unformatted);
    } else {
      $segments = (array) $unformatted;
    }
    foreach ($segments as $key => $segment) {
      $segment    = str_replace($this->getWordDelimiter(), ' ', strtolower($segment));
      $segment    = preg_replace('/[^a-z0-9 ]/', '', $segment);
      $segments[$key] = str_replace(' ', '', ucwords($segment));
    }
    return implode('_', $segments);
  }
  public function getFrontController()
  {
    if (null === $this->_frontController) {
      require_once 'Zend/Controller/Front.php';
      $this->_frontController = Zend_Controller_Front::getInstance();
    }
    return $this->_frontController;
  }
  public function setFrontController(Zend_Controller_Front $controller)
  {
    $this->_frontController = $controller;
    return $this;
  }
  public function setParam($name, $value)
  {
    $name = (string) $name;
    $this->_invokeParams[$name] = $value;
    return $this;
  }
  public function setParams(array $params)
  {
    $this->_invokeParams = array_merge($this->_invokeParams, $params);
    return $this;
  }
  public function getParam($name)
  {
    if(isset($this->_invokeParams[$name])) {
      return $this->_invokeParams[$name];
    }
    return null;
  }
  public function getParams()
  {
    return $this->_invokeParams;
  }
  public function clearParams($name = null)
  {
    if (null === $name) {
      $this->_invokeParams = array();
    } elseif (is_string($name) && isset($this->_invokeParams[$name])) {
      unset($this->_invokeParams[$name]);
    } elseif (is_array($name)) {
      foreach ($name as $key) {
        if (is_string($key) && isset($this->_invokeParams[$key])) {
          unset($this->_invokeParams[$key]);
        }
      }
    }
    return $this;
  }
  public function setResponse(Zend_Controller_Response_Abstract $response = null)
  {
    $this->_response = $response;
    return $this;
  }
  public function getResponse()
  {
    return $this->_response;
  }
  public function setDefaultControllerName($controller)
  {
    $this->_defaultController = (string) $controller;
    return $this;
  }
  public function getDefaultControllerName()
  {
    return $this->_defaultController;
  }
  public function setDefaultAction($action)
  {
    $this->_defaultAction = (string) $action;
    return $this;
  }
  public function getDefaultAction()
  {
    return $this->_defaultAction;
  }
  public function setDefaultModule($module)
  {
    $this->_defaultModule = (string) $module;
    return $this;
  }
  public function getDefaultModule()
  {
    return $this->_defaultModule;
  }
}
登录后复制

Zend_Controller_Dispatcher_Standard

ZendFramework继承抽象类Zend_Controller_Dispatcher_Abstract，定义了Zend_Controller_Dispatcher_Standard。Zend_Controller_Dispatcher_Standard是ZendFramework提供的基本的分发器，完成了分发功能。

<&#63;php
/** Zend_Loader */
require_once 'Zend/Loader.php';
/** Zend_Controller_Dispatcher_Abstract */
require_once 'Zend/Controller/Dispatcher/Abstract.php';
class Zend_Controller_Dispatcher_Standard extends Zend_Controller_Dispatcher_Abstract
{
  protected $_curDirectory;
  protected $_curModule;
  protected $_controllerDirectory = array();
  public function __construct(array $params = array())
  {
    parent::__construct($params);
    $this->_curModule = $this->getDefaultModule();
  }
  public function addControllerDirectory($path, $module = null)
  {
    if (null === $module) {
      $module = $this->_defaultModule;
    }
    $module = (string) $module;
    $path  = rtrim((string) $path, '/\\');
    $this->_controllerDirectory[$module] = $path;
    return $this;
  }
  public function setControllerDirectory($directory, $module = null)
  {
    $this->_controllerDirectory = array();
    if (is_string($directory)) {
      $this->addControllerDirectory($directory, $module);
    } elseif (is_array($directory)) {
      foreach ((array) $directory as $module => $path) {
        $this->addControllerDirectory($path, $module);
      }
    } else {
      require_once 'Zend/Controller/Exception.php';
      throw new Zend_Controller_Exception('Controller directory spec must be either a string or an array');
    }
    return $this;
  }
  public function getControllerDirectory($module = null)
  {
    if (null === $module) {
      return $this->_controllerDirectory;
    }
    $module = (string) $module;
    if (array_key_exists($module, $this->_controllerDirectory)) {
      return $this->_controllerDirectory[$module];
    }
    return null;
  }
  public function removeControllerDirectory($module)
  {
    $module = (string) $module;
    if (array_key_exists($module, $this->_controllerDirectory)) {
      unset($this->_controllerDirectory[$module]);
      return true;
    }
    return false;
  }
  public function formatModuleName($unformatted)
  {
    if (($this->_defaultModule == $unformatted) && !$this->getParam('prefixDefaultModule')) {
      return $unformatted;
    }
    return ucfirst($this->_formatName($unformatted));
  }
  public function formatClassName($moduleName, $className)
  {
    return $this->formatModuleName($moduleName) . '_' . $className;
  }
  public function classToFilename($class)
  {
    return str_replace('_', DIRECTORY_SEPARATOR, $class) . '.php';
  }
  public function isDispatchable(Zend_Controller_Request_Abstract $request)
  {
    $className = $this->getControllerClass($request);
    if (!$className) {
      return false;
    }
    $finalClass = $className;
    if (($this->_defaultModule != $this->_curModule)
      || $this->getParam('prefixDefaultModule'))
    {
      $finalClass = $this->formatClassName($this->_curModule, $className);
    }
    if (class_exists($finalClass, false)) {
      return true;
    }
    $fileSpec  = $this->classToFilename($className);
    $dispatchDir = $this->getDispatchDirectory();
    $test    = $dispatchDir . DIRECTORY_SEPARATOR . $fileSpec;
    return Zend_Loader::isReadable($test);
  }
  public function dispatch(Zend_Controller_Request_Abstract $request, Zend_Controller_Response_Abstract $response)
  {
    $this->setResponse($response);
    /**
     * Get controller class
     */
    if (!$this->isDispatchable($request)) {
      $controller = $request->getControllerName();
      if (!$this->getParam('useDefaultControllerAlways') && !empty($controller)) {
        require_once 'Zend/Controller/Dispatcher/Exception.php';
        throw new Zend_Controller_Dispatcher_Exception('Invalid controller specified (' . $request->getControllerName() . ')');
      }
      $className = $this->getDefaultControllerClass($request);
    } else {
      $className = $this->getControllerClass($request);
      if (!$className) {
        $className = $this->getDefaultControllerClass($request);
      }
    }
    /**
     * Load the controller class file
     */
    $className = $this->loadClass($className);
    /**
     * Instantiate controller with request, response, and invocation
     * arguments; throw exception if it's not an action controller
     */
    $controller = new $className($request, $this->getResponse(), $this->getParams());
    if (!($controller instanceof Zend_Controller_Action_Interface) &&
      !($controller instanceof Zend_Controller_Action)) {
      require_once 'Zend/Controller/Dispatcher/Exception.php';
      throw new Zend_Controller_Dispatcher_Exception(
        'Controller "' . $className . '" is not an instance of Zend_Controller_Action_Interface'
      );
    }
    /**
     * Retrieve the action name
     */
    $action = $this->getActionMethod($request);
    /**
     * Dispatch the method call
     */
    $request->setDispatched(true);
    // by default, buffer output
    $disableOb = $this->getParam('disableOutputBuffering');
    $obLevel  = ob_get_level();
    if (empty($disableOb)) {
      ob_start();
    }
    try {
      $controller->dispatch($action);
    } catch (Exception $e) {
      // Clean output buffer on error
      $curObLevel = ob_get_level();
      if ($curObLevel > $obLevel) {
        do {
          ob_get_clean();
          $curObLevel = ob_get_level();
        } while ($curObLevel > $obLevel);
      }
      throw $e;
    }
    if (empty($disableOb)) {
      $content = ob_get_clean();
      $response->appendBody($content);
    }
    // Destroy the page controller instance and reflection objects
    $controller = null;
  }
  public function loadClass($className)
  {
    $finalClass = $className;
    if (($this->_defaultModule != $this->_curModule)
      || $this->getParam('prefixDefaultModule'))
    {
      $finalClass = $this->formatClassName($this->_curModule, $className);
    }
    if (class_exists($finalClass, false)) {
      return $finalClass;
    }
    $dispatchDir = $this->getDispatchDirectory();
    $loadFile  = $dispatchDir . DIRECTORY_SEPARATOR . $this->classToFilename($className);
    if (Zend_Loader::isReadable($loadFile)) {
      include_once $loadFile;
    } else {
      require_once 'Zend/Controller/Dispatcher/Exception.php';
      throw new Zend_Controller_Dispatcher_Exception('Cannot load controller class "' . $className . '" from file "' . $loadFile . "'");
    }
    if (!class_exists($finalClass, false)) {
      require_once 'Zend/Controller/Dispatcher/Exception.php';
      throw new Zend_Controller_Dispatcher_Exception('Invalid controller class ("' . $finalClass . '")');
    }
    return $finalClass;
  }
  public function getControllerClass(Zend_Controller_Request_Abstract $request)
  {
    $controllerName = $request->getControllerName();
    if (empty($controllerName)) {
      if (!$this->getParam('useDefaultControllerAlways')) {
        return false;
      }
      $controllerName = $this->getDefaultControllerName();
      $request->setControllerName($controllerName);
    }
    $className = $this->formatControllerName($controllerName);
    $controllerDirs   = $this->getControllerDirectory();
    $module = $request->getModuleName();
    if ($this->isValidModule($module)) {
      $this->_curModule  = $module;
      $this->_curDirectory = $controllerDirs[$module];
    } elseif ($this->isValidModule($this->_defaultModule)) {
      $request->setModuleName($this->_defaultModule);
      $this->_curModule  = $this->_defaultModule;
      $this->_curDirectory = $controllerDirs[$this->_defaultModule];
    } else {
      require_once 'Zend/Controller/Exception.php';
      throw new Zend_Controller_Exception('No default module defined for this application');
    }
    return $className;
  }
  public function isValidModule($module)
  {
    if (!is_string($module)) {
      return false;
    }
    $module    = strtolower($module);
    $controllerDir = $this->getControllerDirectory();
    foreach (array_keys($controllerDir) as $moduleName) {
      if ($module == strtolower($moduleName)) {
        return true;
      }
    }
    return false;
  }
  public function getDefaultControllerClass(Zend_Controller_Request_Abstract $request)
  {
    $controller = $this->getDefaultControllerName();
    $default  = $this->formatControllerName($controller);
    $request->setControllerName($controller)
        ->setActionName(null);
    $module       = $request->getModuleName();
    $controllerDirs   = $this->getControllerDirectory();
    $this->_curModule  = $this->_defaultModule;
    $this->_curDirectory = $controllerDirs[$this->_defaultModule];
    if ($this->isValidModule($module)) {
      $found = false;
      if (class_exists($default, false)) {
        $found = true;
      } else {
        $moduleDir = $controllerDirs[$module];
        $fileSpec = $moduleDir . DIRECTORY_SEPARATOR . $this->classToFilename($default);
        if (Zend_Loader::isReadable($fileSpec)) {
          $found = true;
          $this->_curDirectory = $moduleDir;
        }
      }
      if ($found) {
        $request->setModuleName($module);
        $this->_curModule  = $this->formatModuleName($module);
      }
    } else {
      $request->setModuleName($this->_defaultModule);
    }
    return $default;
  }
  public function getDispatchDirectory()
  {
    return $this->_curDirectory;
  }
  public function getActionMethod(Zend_Controller_Request_Abstract $request)
  {
    $action = $request->getActionName();
    if (empty($action)) {
      $action = $this->getDefaultAction();
      $request->setActionName($action);
    }
    return $this->formatActionName($action);
  }
}
登录后复制

前端控制器和分发器

<&#63;php
/** Zend_Loader */
require_once 'Zend/Loader.php';
/** Zend_Controller_Action_HelperBroker */
require_once 'Zend/Controller/Action/HelperBroker.php';
/** Zend_Controller_Plugin_Broker */
require_once 'Zend/Controller/Plugin/Broker.php';
class Zend_Controller_Front
{
  protected $_baseUrl = null;
  protected $_controllerDir = null;
  protected $_dispatcher = null;
  protected static $_instance = null;
  protected $_invokeParams = array();
  protected $_moduleControllerDirectoryName = 'controllers';
  protected $_plugins = null;
  protected $_request = null;
  protected $_response = null;
  protected $_returnResponse = false;
  protected $_router = null;
  protected $_throwExceptions = false;
  protected function __construct()
  {
    $this->_plugins = new Zend_Controller_Plugin_Broker();
  }
  private function __clone()
  {
  }
  public static function getInstance()
  {
    if (null === self::$_instance) {
      self::$_instance = new self();
    }
    return self::$_instance;
  }
  public function resetInstance()
  {
    $reflection = new ReflectionObject($this);
    foreach ($reflection->getProperties() as $property) {
      $name = $property->getName();
      switch ($name) {
        case '_instance':
          break;
        case '_controllerDir':
        case '_invokeParams':
          $this->{$name} = array();
          break;
        case '_plugins':
          $this->{$name} = new Zend_Controller_Plugin_Broker();
          break;
        case '_throwExceptions':
        case '_returnResponse':
          $this->{$name} = false;
          break;
        case '_moduleControllerDirectoryName':
          $this->{$name} = 'controllers';
          break;
        default:
          $this->{$name} = null;
          break;
      }
    }
    Zend_Controller_Action_HelperBroker::resetHelpers();
  }
  public static function run($controllerDirectory)
  {
    self::getInstance()
      ->setControllerDirectory($controllerDirectory)
      ->dispatch();
  }
  public function addControllerDirectory($directory, $module = null)
  {
    $this->getDispatcher()->addControllerDirectory($directory, $module);
    return $this;
  }
  public function setControllerDirectory($directory, $module = null)
  {
    $this->getDispatcher()->setControllerDirectory($directory, $module);
    return $this;
  }
  public function getControllerDirectory($name = null)
  {
    return $this->getDispatcher()->getControllerDirectory($name);
  }
  public function removeControllerDirectory($module)
  {
    return $this->getDispatcher()->removeControllerDirectory($module);
  }
  public function addModuleDirectory($path)
  {
    try{
      $dir = new DirectoryIterator($path);
    } catch(Exception $e) {
      require_once 'Zend/Controller/Exception.php';
      throw new Zend_Controller_Exception("Directory $path not readable", 0, $e);
    }
    foreach ($dir as $file) {
      if ($file->isDot() || !$file->isDir()) {
        continue;
      }
      $module  = $file->getFilename();
      // Don't use SCCS directories as modules
      if (preg_match('/^[^a-z]/i', $module) || ('CVS' == $module)) {
        continue;
      }
      $moduleDir = $file->getPathname() . DIRECTORY_SEPARATOR . $this->getModuleControllerDirectoryName();
      $this->addControllerDirectory($moduleDir, $module);
    }
    return $this;
  }
  public function getModuleDirectory($module = null)
  {
    if (null === $module) {
      $request = $this->getRequest();
      if (null !== $request) {
        $module = $this->getRequest()->getModuleName();
      }
      if (empty($module)) {
        $module = $this->getDispatcher()->getDefaultModule();
      }
    }
    $controllerDir = $this->getControllerDirectory($module);
    if ((null === $controllerDir) || !is_string($controllerDir)) {
      return null;
    }
    return dirname($controllerDir);
  }
  public function setModuleControllerDirectoryName($name = 'controllers')
  {
    $this->_moduleControllerDirectoryName = (string) $name;
    return $this;
  }
  public function getModuleControllerDirectoryName()
  {
    return $this->_moduleControllerDirectoryName;
  }
  public function setDefaultControllerName($controller)
  {
    $dispatcher = $this->getDispatcher();
    $dispatcher->setDefaultControllerName($controller);
    return $this;
  }
  public function getDefaultControllerName()
  {
    return $this->getDispatcher()->getDefaultControllerName();
  }
  public function setDefaultAction($action)
  {
    $dispatcher = $this->getDispatcher();
    $dispatcher->setDefaultAction($action);
    return $this;
  }
  public function getDefaultAction()
  {
    return $this->getDispatcher()->getDefaultAction();
  }
  public function setDefaultModule($module)
  {
    $dispatcher = $this->getDispatcher();
    $dispatcher->setDefaultModule($module);
    return $this;
  }
  public function getDefaultModule()
  {
    return $this->getDispatcher()->getDefaultModule();
  }
  public function setRequest($request)
  {
    ...........................
    return $this;
  }
  public function getRequest()
  {
    return $this->_request;
  }
  public function setRouter($router)
  {
    ....................
    return $this;
  }
  public function getRouter()
  {
    ..................
    return $this->_router;
  }
  public function setBaseUrl($base = null)
  {
    ..............
    return $this;
  }
  public function getBaseUrl()
  {
    return $this->_baseUrl;
  }
  /**
   * Set the dispatcher object. The dispatcher is responsible for
   * taking a Zend_Controller_Dispatcher_Token object, instantiating the controller, and
   * call the action method of the controller.
   *
   * @param Zend_Controller_Dispatcher_Interface $dispatcher
   * @return Zend_Controller_Front
   */
  public function setDispatcher(Zend_Controller_Dispatcher_Interface $dispatcher)
  {
    $this->_dispatcher = $dispatcher;
    return $this;
  }
  /**
   * Return the dispatcher object.
   *
   * @return Zend_Controller_Dispatcher_Interface
   */
  public function getDispatcher()
  {
    /**
     * Instantiate the default dispatcher if one was not set.
     */
    if (!$this->_dispatcher instanceof Zend_Controller_Dispatcher_Interface) {
      require_once 'Zend/Controller/Dispatcher/Standard.php';
      $this->_dispatcher = new Zend_Controller_Dispatcher_Standard();
    }
    return $this->_dispatcher;
  }
  public function setResponse($response)
  {..................
    return $this;
  }
  public function getResponse()
  {
    return $this->_response;
  }
  public function setParam($name, $value)
  {
    $name = (string) $name;
    $this->_invokeParams[$name] = $value;
    return $this;
  }
  public function setParams(array $params)
  {
    $this->_invokeParams = array_merge($this->_invokeParams, $params);
    return $this;
  }
  public function getParam($name)
  {
    if(isset($this->_invokeParams[$name])) {
      return $this->_invokeParams[$name];
    }
    return null;
  }
  public function getParams()
  {
    return $this->_invokeParams;
  }
  public function clearParams($name = null)
  {
    if (null === $name) {
      $this->_invokeParams = array();
    } elseif (is_string($name) && isset($this->_invokeParams[$name])) {
      unset($this->_invokeParams[$name]);
    } elseif (is_array($name)) {
      foreach ($name as $key) {
        if (is_string($key) && isset($this->_invokeParams[$key])) {
          unset($this->_invokeParams[$key]);
        }
      }
    }
    return $this;
  }
  public function registerPlugin(Zend_Controller_Plugin_Abstract $plugin, $stackIndex = null)
  {
    $this->_plugins->registerPlugin($plugin, $stackIndex);
    return $this;
  }
  public function unregisterPlugin($plugin)
  {
    $this->_plugins->unregisterPlugin($plugin);
    return $this;
  }
  public function hasPlugin($class)
  {
    return $this->_plugins->hasPlugin($class);
  }
  public function getPlugin($class)
  {
    return $this->_plugins->getPlugin($class);
  }
  public function getPlugins()
  {
    return $this->_plugins->getPlugins();
  }
  public function throwExceptions($flag = null)
  {
    .....................
    return $this->_throwExceptions;
  }
  public function returnResponse($flag = null)
  {
    ................
    return $this->_returnResponse;
  }
  /**
   * Dispatch an HTTP request to a controller/action.
   *
   * @param Zend_Controller_Request_Abstract|null $request
   * @param Zend_Controller_Response_Abstract|null $response
   * @return void|Zend_Controller_Response_Abstract Returns response object if returnResponse() is true
   */
  public function dispatch(Zend_Controller_Request_Abstract $request = null, Zend_Controller_Response_Abstract $response = null)
  {
    if (!$this->getParam('noErrorHandler') && !$this->_plugins->hasPlugin('Zend_Controller_Plugin_ErrorHandler')) {
      // Register with stack index of 100
      require_once 'Zend/Controller/Plugin/ErrorHandler.php';
      $this->_plugins->registerPlugin(new Zend_Controller_Plugin_ErrorHandler(), 100);
    }
    if (!$this->getParam('noViewRenderer') && !Zend_Controller_Action_HelperBroker::hasHelper('viewRenderer')) {
      require_once 'Zend/Controller/Action/Helper/ViewRenderer.php';
      Zend_Controller_Action_HelperBroker::getStack()->offsetSet(-80, new Zend_Controller_Action_Helper_ViewRenderer());
    }
    /**
     * Instantiate default request object (HTTP version) if none provided
     */
    if (null !== $request) {
      $this->setRequest($request);
    } elseif ((null === $request) && (null === ($request = $this->getRequest()))) {
      require_once 'Zend/Controller/Request/Http.php';
      $request = new Zend_Controller_Request_Http();
      $this->setRequest($request);
    }
    /**
     * Set base URL of request object, if available
     */
    if (is_callable(array($this->_request, 'setBaseUrl'))) {
      if (null !== $this->_baseUrl) {
        $this->_request->setBaseUrl($this->_baseUrl);
      }
    }
    /**
     * Instantiate default response object (HTTP version) if none provided
     */
    if (null !== $response) {
      $this->setResponse($response);
    } elseif ((null === $this->_response) && (null === ($this->_response = $this->getResponse()))) {
      require_once 'Zend/Controller/Response/Http.php';
      $response = new Zend_Controller_Response_Http();
      $this->setResponse($response);
    }
    /**
     * Register request and response objects with plugin broker
     */
    $this->_plugins
       ->setRequest($this->_request)
       ->setResponse($this->_response);
    /**
     * Initialize router
     */
    $router = $this->getRouter();
    $router->setParams($this->getParams());
    /**
     * Initialize dispatcher
     */
    $dispatcher = $this->getDispatcher();
    $dispatcher->setParams($this->getParams())
          ->setResponse($this->_response);
    // Begin dispatch
    try {
      /**
       * Route request to controller/action, if a router is provided
       */
      /**
      * Notify plugins of router startup
      */
      $this->_plugins->routeStartup($this->_request);
      try {
        $router->route($this->_request);
      } catch (Exception $e) {
        if ($this->throwExceptions()) {
          throw $e;
        }
        $this->_response->setException($e);
      }
      /**
      * Notify plugins of router completion
      */
      $this->_plugins->routeShutdown($this->_request);
      /**
       * Notify plugins of dispatch loop startup
       */
      $this->_plugins->dispatchLoopStartup($this->_request);
      /**
       * Attempt to dispatch the controller/action. If the $this->_request
       * indicates that it needs to be dispatched, move to the next
       * action in the request.
       */
      do {
        $this->_request->setDispatched(true);
        /**
         * Notify plugins of dispatch startup
         */
        $this->_plugins->preDispatch($this->_request);
        /**
         * Skip requested action if preDispatch() has reset it
         */
        if (!$this->_request->isDispatched()) {
          continue;
        }
        /**
         * Dispatch request
         */
        try {
          $dispatcher->dispatch($this->_request, $this->_response);
        } catch (Exception $e) {
          if ($this->throwExceptions()) {
            throw $e;
          }
          $this->_response->setException($e);
        }
        /**
         * Notify plugins of dispatch completion
         */
        $this->_plugins->postDispatch($this->_request);
      } while (!$this->_request->isDispatched());
    } catch (Exception $e) {
      if ($this->throwExceptions()) {
        throw $e;
      }
      $this->_response->setException($e);
    }
    /**
     * Notify plugins of dispatch loop completion
     */
    try {
      $this->_plugins->dispatchLoopShutdown();
    } catch (Exception $e) {
      if ($this->throwExceptions()) {
        throw $e;
      }
      $this->_response->setException($e);
    }
    if ($this->returnResponse()) {
      return $this->_response;
    }
    $this->_response->sendResponse();
  }
}
登录后复制

以上对Zend_Controller_Front和Zend_Controller_Dispatcher做了简单的标记，通过分析代码不难看出，基本的运行机制。

分发发生在前端控制器中的一个循环（loop）中。分发之前，前端控制器通过路由请求，找到用户指定的模块、控制器、动作和可选参数。然后进入分发循环，分发请求。

分发器需要大量数据完成任务——它需要知道如何格式化控制器和动作的名称，到哪儿找到控制器类文件，模块名是否有效，以及基于其它可用信息判定请求是否能分发的API。

每次迭代（iteration）过程开始时，在请求对象中设置一个标志指示该动作已分发。如果在动作或者前/后分发（pre/postDispatch）插件重置了该标志，分发循环将继续下去并试图分发新的请求。通过改变请求中的控制器或者动作并重置已分发标志，开发人员可以定制执行一个请求链。

控制这种分发过程的动作控制器方法是_forward()；在任意的pre/postDispatch()或者动作中调用该方法，并传入动作、控制器、模块、以及可选的附加参数，就可以进入新的动作。

自定义分发器

Zend_Controller_Dispatcher_Interface定义了下列所有分发器需要实现的方法。

不过大多数情况下，只需要简单地扩展抽象类Zend_Controller_Dispatcher_Abstract，其中已经定义好了上面的大部分方法。或者扩展Zend_Controller_Dispatcher_Standard类，基于标准分发器来修改功能。

需要子类化分发器的可能原因包括：期望在动作控制器中使用不同的类和方法命名模式，或者期望使用不同的分发方式，比如分发到控制器目录下的动作文件，而不是控制器类的动作方法。

更多关于zend相关内容感兴趣的读者可查看本站专题：《Zend FrameWork框架入门教程》、《php优秀开发框架总结》、《Yii框架入门及常用技巧总结》、《ThinkPHP入门教程》、《php面向对象程序设计入门教程》、《php+mysql数据库操作入门教程》及《php常见数据库操作技巧汇总》

希望本文所述对大家PHP程序设计有所帮助。

本站声明
本文内容由网友自发贡献，版权归原作者所有，本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容，请联系admin@php.cn

热AI工具

Undresser.AI Undress

Undresser.AI Undress

人工智能驱动的应用程序，用于创建逼真的裸体照片

AI Clothes Remover

AI Clothes Remover

用于从照片中去除衣服的在线人工智能工具。

Undress AI Tool

Undress AI Tool

免费脱衣服图片

Clothoff.io

Clothoff.io

AI脱衣机

AI Hentai Generator

AI Hentai Generator

免费生成ai无尽的。

显示更多

热门文章

R.E.P.O.能量晶体解释及其做什么（黄色晶体）
2 周前 By 尊渡假赌尊渡假赌尊渡假赌
击败分裂小说需要多长时间？
1 个月前 By DDD
R.E.P.O.保存文件位置：在哪里以及如何保护它？
1 个月前 By DDD
R.E.P.O.最佳图形设置
2 周前 By 尊渡假赌尊渡假赌尊渡假赌
刺客信条阴影：贝壳谜语解决方案
1 周前 By DDD
显示更多

热工具

记事本++7.3.1

记事本++7.3.1

好用且免费的代码编辑器

SublimeText3汉化版

SublimeText3汉化版

中文版，非常好用

禅工作室 13.0.1

禅工作室 13.0.1

功能强大的PHP集成开发环境

Dreamweaver CS6

Dreamweaver CS6

视觉化网页开发工具

SublimeText3 Mac版

SublimeText3 Mac版

神级代码编辑软件(SublimeText3)

显示更多

热门话题

gmail邮箱登陆入口在哪里
7392
15
Java教程
1630
14
CakePHP 教程
1357
52
Laravel 教程
1268
25
PHP教程
1216
29
显示更多
Related knowledge
得物使用教程 得物使用教程 Mar 21, 2024 pm 01:40 PM

得物APP是当前十分火爆品牌购物的软件，但是多数的用户不知道得物APP中功能如何的使用，下方会整理最详细的使用教程攻略，接下来就是小编为用户带来的得物多功能使用教程汇总，感兴趣的用户快来一起看看吧！得物使用教程【2024-03-20】得物分期购怎么使用【2024-03-20】得物优惠券怎么获得【2024-03-20】得物人工客服怎么找【2024-03-20】得物取件码怎么查看【2024-03-20】得物求购在哪里看【2024-03-20】得物vip怎么开【2024-03-20】得物怎么申请退换货

夸克浏览器使用教程 夸克浏览器使用教程 Feb 24, 2024 pm 04:10 PM

夸克浏览器是当前十分火爆的一款多功能的浏览器，但是多数的小伙伴不知道夸克浏览器如何使用其中的功能，下方会整理出来最使用的功能技巧，接下来就是小编为用户带来的夸克浏览器多功能使用教程汇总，感兴趣的用户快来一起看看吧！夸克浏览器使用教程【2024-01-09】：夸克如何扫描试卷看答案【2024-01-09】：夸克浏览器怎么开启成人模式【2024-01-09】：如何删除夸克已用空间【2024-01-09】：怎么清理夸克网盘存储空间【2024-01-09】：夸克怎么取消备份【2024-01-09】：夸克

升级numpy版本：详细易学的指南 升级numpy版本：详细易学的指南 Feb 25, 2024 pm 11:39 PM

如何升级numpy版本：简单易懂的教程，需要具体代码示例引言：NumPy是一个重要的Python库，用于科学计算。它提供了一个强大的多维数组对象和一系列与之相关的函数，可用于进行高效的数值运算。随着新版本的发布，不断有更新的特性和Bug修复可供我们使用。本文将介绍如何升级已安装的NumPy库，以获取最新特性并解决已知问题。步骤1：检查当前NumPy版本在开始

微信关收款声音的步骤教程 微信关收款声音的步骤教程 Mar 26, 2024 am 08:30 AM

1、首先打开微信。2、点击右上角【+】。3、点击二维码收款。4、点击右上角三个小点。5、点击关闭收款到账语音提醒。

photoshopcs5是什么软件？-photoshopcs5使用教程 photoshopcs5是什么软件？-photoshopcs5使用教程 Mar 19, 2024 am 09:04 AM

PhotoshopCS是PhotoshopCreativeSuite的缩写，由Adobe公司出品的软件，被广泛用于平面设计和图像处理，作为新手学习PS，今天就让小编为您解答一下photoshopcs5是什么软件以及photoshopcs5使用教程。一、photoshopcs5是什么软件AdobePhotoshopCS5Extended是电影、视频和多媒体领域的专业人士,使用3D和动画的图形和Web设计人员,以及工程和科学领域的专业人士的理想选择。呈现3D图像并将它合并到2D复合图像中。轻松编辑视

夏天，一定要试试拍摄彩虹 夏天，一定要试试拍摄彩虹 Jul 21, 2024 pm 05:16 PM

夏天雨后，经常能见到一种美丽且神奇的特殊天气景象——彩虹。这也是摄影中可遇而不可求的难得景象，非常出片。彩虹出现有这样几个条件：一是空气中有充足的水滴，二是太阳以较低的角度进行照射。所以下午雨过天晴后的一段时间内，是最容易看到彩虹的时候。不过彩虹的形成受天气、光线等条件的影响较大，因此一般只会持续一小段时间，而最佳观赏、拍摄时间更为短暂。那么遇到彩虹，怎样才能合理将其记录下来并拍出质感呢？1.寻找彩虹除了上面提到的条件外，彩虹通常出现在阳光照射的方向，即如果太阳由西向东照射，彩虹更有可能出现在东

DisplayX（显示器测试软件）使用教程 DisplayX（显示器测试软件）使用教程 Mar 04, 2024 pm 04:00 PM

在购买显示器的时候对其进行测试是必不可少的一环，能够避免买到有损坏的，今天小编教大家来使用软件对显示器进行测试。方法步骤1.首先要在本站搜索下载DisplayX这款软件，安装打开，会看到提供给用户很多种检测方法。2.用户点击常规完全测试，首先是测试显示器的亮度，用户调节显示器使得方框都能看得清。3.之后点击鼠标即可进入下一环节，如果显示器能够分清每个黑色白色区域那说明显示器还是不错的。4.再次单击鼠标左键，会看到显示器的灰度测试，颜色过渡越平滑表示显示器越好。5.另外在displayx软件中我们

专家教你！华为手机截长图的正确方法 专家教你！华为手机截长图的正确方法 Mar 22, 2024 pm 12:21 PM

随着智能手机的不断发展，手机的功能也变得越来越强大，其中截长图功能成为了许多用户日常使用的重要功能之一。截长图可以帮助用户将一个较长的网页、对话记录或者图片一次性保存下来，方便查阅和分享。而在众多手机品牌中，华为手机也是备受用户推崇的一款品牌之一，其截长图功能也备受好评。本文将为大家介绍华为手机截长图的正确方法，以及一些专家技巧，帮助大家更好地利用华为手机的

See all articles