快捷導(dǎo)航

Zend Framework教程之請(qǐng)求對(duì)象的封裝Zend_Controller_Request實(shí)例詳解

更新時(shí)間：2016年03月07日 11:10:57 作者：coder

這篇文章主要介紹了Zend Framework教程之請(qǐng)求對(duì)象的封裝Zend_Controller_Request用法,結(jié)合實(shí)例形式詳細(xì)分析了請(qǐng)求對(duì)象封裝的原理,使用方法與相關(guān)注意事項(xiàng),需要的朋友可以參考下

本文實(shí)例講述了Zend Framework教程之請(qǐng)求對(duì)象的封裝Zend_Controller_Request方法。分享給大家供大家參考，具體如下：

概述

請(qǐng)求對(duì)象是在前端控制器，路由器，分發(fā)器，以及控制類間傳遞的簡(jiǎn)單值對(duì)象。請(qǐng)求對(duì)象封裝了請(qǐng)求的模塊，控制器，動(dòng)作以及可選的參數(shù)，還包括其他的請(qǐng)求環(huán)境，如HTTP，CLI，PHP-GTK。

請(qǐng)求對(duì)象的基本實(shí)現(xiàn)

├── Request
│   ├── Abstract.php
│   ├── Apache404.php
│   ├── Exception.php
│   ├── Http.php
│   ├── HttpTestCase.php
│   └── Simple.php

Zend_Controller_Request_Abstract

實(shí)現(xiàn)了請(qǐng)求對(duì)象的基本方法。

<?php
abstract class Zend_Controller_Request_Abstract
{
  protected $_dispatched = false;
  protected $_module;
  protected $_moduleKey = 'module';
  protected $_controller;
  protected $_controllerKey = 'controller';
  protected $_action;
  protected $_actionKey = 'action';
  protected $_params = array();
  public function getModuleName()
  {
    if (null === $this->_module) {
      $this->_module = $this->getParam($this->getModuleKey());
    }
    return $this->_module;
  }
  public function setModuleName($value)
  {
    $this->_module = $value;
    return $this;
  }
  public function getControllerName()
  {
    if (null === $this->_controller) {
      $this->_controller = $this->getParam($this->getControllerKey());
    }
    return $this->_controller;
  }
  public function setControllerName($value)
  {
    $this->_controller = $value;
    return $this;
  }
  public function getActionName()
  {
    if (null === $this->_action) {
      $this->_action = $this->getParam($this->getActionKey());
    }
    return $this->_action;
  }
  public function setActionName($value)
  {
    $this->_action = $value;
    /**
     * @see ZF-3465
     */
    if (null === $value) {
      $this->setParam($this->getActionKey(), $value);
    }
    return $this;
  }
  public function getModuleKey()
  {
    return $this->_moduleKey;
  }
  public function setModuleKey($key)
  {
    $this->_moduleKey = (string) $key;
    return $this;
  }
  public function getControllerKey()
  {
    return $this->_controllerKey;
  }
  public function setControllerKey($key)
  {
    $this->_controllerKey = (string) $key;
    return $this;
  }
  public function getActionKey()
  {
    return $this->_actionKey;
  }
  public function setActionKey($key)
  {
    $this->_actionKey = (string) $key;
    return $this;
  }
  public function getParam($key, $default = null)
  {
    $key = (string) $key;
    if (isset($this->_params[$key])) {
      return $this->_params[$key];
    }
    return $default;
  }
  public function getUserParams()
  {
    return $this->_params;
  }
  public function getUserParam($key, $default = null)
  {
    if (isset($this->_params[$key])) {
      return $this->_params[$key];
    }
    return $default;
  }
  public function setParam($key, $value)
  {
    $key = (string) $key;
    if ((null === $value) && isset($this->_params[$key])) {
      unset($this->_params[$key]);
    } elseif (null !== $value) {
      $this->_params[$key] = $value;
    }
    return $this;
  }
   public function getParams()
   {
     return $this->_params;
   }
  public function setParams(array $array)
  {
    $this->_params = $this->_params + (array) $array;
    foreach ($array as $key => $value) {
      if (null === $value) {
        unset($this->_params[$key]);
      }
    }
    return $this;
  }
  public function clearParams()
  {
    $this->_params = array();
    return $this;
  }
  public function setDispatched($flag = true)
  {
    $this->_dispatched = $flag ? true : false;
    return $this;
  }
  public function isDispatched()
  {
    return $this->_dispatched;
  }
}

Zend_Controller_Request_Http

Zend_Controller_Request請(qǐng)求對(duì)象的默認(rèn)實(shí)現(xiàn)。

<?php
require_once 'Zend/Controller/Request/Abstract.php';
require_once 'Zend/Uri.php';
class Zend_Controller_Request_Http extends Zend_Controller_Request_Abstract
{
  const SCHEME_HTTP = 'http';
  const SCHEME_HTTPS = 'https';
  protected $_paramSources = array('_GET', '_POST');
  protected $_requestUri;
  protected $_baseUrl = null;
  protected $_basePath = null;
  protected $_pathInfo = '';
  protected $_params = array();
  protected $_rawBody;
  protected $_aliases = array();
  public function __construct($uri = null)
  {
    if (null !== $uri) {
      if (!$uri instanceof Zend_Uri) {
        $uri = Zend_Uri::factory($uri);
      }
      if ($uri->valid()) {
        $path = $uri->getPath();
        $query = $uri->getQuery();
        if (!empty($query)) {
          $path .= '?' . $query;
        }
        $this->setRequestUri($path);
      } else {
        require_once 'Zend/Controller/Request/Exception.php';
        throw new Zend_Controller_Request_Exception('Invalid URI provided to constructor');
      }
    } else {
      $this->setRequestUri();
    }
  }
  public function __get($key)
  {
    switch (true) {
      case isset($this->_params[$key]):
        return $this->_params[$key];
      case isset($_GET[$key]):
        return $_GET[$key];
      case isset($_POST[$key]):
        return $_POST[$key];
      case isset($_COOKIE[$key]):
        return $_COOKIE[$key];
      case ($key == 'REQUEST_URI'):
        return $this->getRequestUri();
      case ($key == 'PATH_INFO'):
        return $this->getPathInfo();
      case isset($_SERVER[$key]):
        return $_SERVER[$key];
      case isset($_ENV[$key]):
        return $_ENV[$key];
      default:
        return null;
    }
  }
  public function get($key)
  {
    return $this->__get($key);
  }
  public function __set($key, $value)
  {
    require_once 'Zend/Controller/Request/Exception.php';
    throw new Zend_Controller_Request_Exception('Setting values in superglobals not allowed; please use setParam()');
  }
  public function set($key, $value)
  {
    return $this->__set($key, $value);
  }
  public function __isset($key)
  {
    switch (true) {
      case isset($this->_params[$key]):
        return true;
      case isset($_GET[$key]):
        return true;
      case isset($_POST[$key]):
        return true;
      case isset($_COOKIE[$key]):
        return true;
      case isset($_SERVER[$key]):
        return true;
      case isset($_ENV[$key]):
        return true;
      default:
        return false;
    }
  }
  public function has($key)
  {
    return $this->__isset($key);
  }
  public function setQuery($spec, $value = null)
  {
    if ((null === $value) && !is_array($spec)) {
      require_once 'Zend/Controller/Exception.php';
      throw new Zend_Controller_Exception('Invalid value passed to setQuery(); must be either array of values or key/value pair');
    }
    if ((null === $value) && is_array($spec)) {
      foreach ($spec as $key => $value) {
        $this->setQuery($key, $value);
      }
      return $this;
    }
    $_GET[(string) $spec] = $value;
    return $this;
  }
  public function getQuery($key = null, $default = null)
  {
    if (null === $key) {
      return $_GET;
    }
    return (isset($_GET[$key])) ? $_GET[$key] : $default;
  }
  public function setPost($spec, $value = null)
  {
    if ((null === $value) && !is_array($spec)) {
      require_once 'Zend/Controller/Exception.php';
      throw new Zend_Controller_Exception('Invalid value passed to setPost(); must be either array of values or key/value pair');
    }
    if ((null === $value) && is_array($spec)) {
      foreach ($spec as $key => $value) {
        $this->setPost($key, $value);
      }
      return $this;
    }
    $_POST[(string) $spec] = $value;
    return $this;
  }
  public function getPost($key = null, $default = null)
  {
    if (null === $key) {
      return $_POST;
    }
    return (isset($_POST[$key])) ? $_POST[$key] : $default;
  }
  public function getCookie($key = null, $default = null)
  {
    if (null === $key) {
      return $_COOKIE;
    }
    return (isset($_COOKIE[$key])) ? $_COOKIE[$key] : $default;
  }
  public function getServer($key = null, $default = null)
  {
    if (null === $key) {
      return $_SERVER;
    }
    return (isset($_SERVER[$key])) ? $_SERVER[$key] : $default;
  }
  public function getEnv($key = null, $default = null)
  {
    if (null === $key) {
      return $_ENV;
    }
    return (isset($_ENV[$key])) ? $_ENV[$key] : $default;
  }
  public function setRequestUri($requestUri = null)
  {
    if ($requestUri === null) {
      if (isset($_SERVER['HTTP_X_REWRITE_URL'])) { // check this first so IIS will catch
        $requestUri = $_SERVER['HTTP_X_REWRITE_URL'];
      } elseif (
        // IIS7 with URL Rewrite: make sure we get the unencoded url (double slash problem)
        isset($_SERVER['IIS_WasUrlRewritten'])
        && $_SERVER['IIS_WasUrlRewritten'] == '1'
        && isset($_SERVER['UNENCODED_URL'])
        && $_SERVER['UNENCODED_URL'] != ''
        ) {
        $requestUri = $_SERVER['UNENCODED_URL'];
      } elseif (isset($_SERVER['REQUEST_URI'])) {
        $requestUri = $_SERVER['REQUEST_URI'];
        // Http proxy reqs setup request uri with scheme and host [and port] + the url path, only use url path
        $schemeAndHttpHost = $this->getScheme() . '://' . $this->getHttpHost();
        if (strpos($requestUri, $schemeAndHttpHost) === 0) {
          $requestUri = substr($requestUri, strlen($schemeAndHttpHost));
        }
      } elseif (isset($_SERVER['ORIG_PATH_INFO'])) { // IIS 5.0, PHP as CGI
        $requestUri = $_SERVER['ORIG_PATH_INFO'];
        if (!empty($_SERVER['QUERY_STRING'])) {
          $requestUri .= '?' . $_SERVER['QUERY_STRING'];
        }
      } else {
        return $this;
      }
    } elseif (!is_string($requestUri)) {
      return $this;
    } else {
      // Set GET items, if available
      if (false !== ($pos = strpos($requestUri, '?'))) {
        // Get key => value pairs and set $_GET
        $query = substr($requestUri, $pos + 1);
        parse_str($query, $vars);
        $this->setQuery($vars);
      }
    }
    $this->_requestUri = $requestUri;
    return $this;
  }
  public function getRequestUri()
  {
    if (empty($this->_requestUri)) {
      $this->setRequestUri();
    }
    return $this->_requestUri;
  }
  public function setBaseUrl($baseUrl = null)
  {
    if ((null !== $baseUrl) && !is_string($baseUrl)) {
      return $this;
    }
    if ($baseUrl === null) {
      $filename = (isset($_SERVER['SCRIPT_FILENAME'])) ? basename($_SERVER['SCRIPT_FILENAME']) : '';
      if (isset($_SERVER['SCRIPT_NAME']) && basename($_SERVER['SCRIPT_NAME']) === $filename) {
        $baseUrl = $_SERVER['SCRIPT_NAME'];
      } elseif (isset($_SERVER['PHP_SELF']) && basename($_SERVER['PHP_SELF']) === $filename) {
        $baseUrl = $_SERVER['PHP_SELF'];
      } elseif (isset($_SERVER['ORIG_SCRIPT_NAME']) && basename($_SERVER['ORIG_SCRIPT_NAME']) === $filename) {
        $baseUrl = $_SERVER['ORIG_SCRIPT_NAME']; // 1and1 shared hosting compatibility
      } else {
        // Backtrack up the script_filename to find the portion matching
        // php_self
        $path  = isset($_SERVER['PHP_SELF']) ? $_SERVER['PHP_SELF'] : '';
        $file  = isset($_SERVER['SCRIPT_FILENAME']) ? $_SERVER['SCRIPT_FILENAME'] : '';
        $segs  = explode('/', trim($file, '/'));
        $segs  = array_reverse($segs);
        $index  = 0;
        $last  = count($segs);
        $baseUrl = '';
        do {
          $seg   = $segs[$index];
          $baseUrl = '/' . $seg . $baseUrl;
          ++$index;
        } while (($last > $index) && (false !== ($pos = strpos($path, $baseUrl))) && (0 != $pos));
      }
      // Does the baseUrl have anything in common with the request_uri?
      $requestUri = $this->getRequestUri();
      if (0 === strpos($requestUri, $baseUrl)) {
        // full $baseUrl matches
        $this->_baseUrl = $baseUrl;
        return $this;
      }
      if (0 === strpos($requestUri, dirname($baseUrl))) {
        // directory portion of $baseUrl matches
        $this->_baseUrl = rtrim(dirname($baseUrl), '/');
        return $this;
      }
      $truncatedRequestUri = $requestUri;
      if (($pos = strpos($requestUri, '?')) !== false) {
        $truncatedRequestUri = substr($requestUri, 0, $pos);
      }
      $basename = basename($baseUrl);
      if (empty($basename) || !strpos($truncatedRequestUri, $basename)) {
        // no match whatsoever; set it blank
        $this->_baseUrl = '';
        return $this;
      }
      // If using mod_rewrite or ISAPI_Rewrite strip the script filename
      // out of baseUrl. $pos !== 0 makes sure it is not matching a value
      // from PATH_INFO or QUERY_STRING
      if ((strlen($requestUri) >= strlen($baseUrl))
        && ((false !== ($pos = strpos($requestUri, $baseUrl))) && ($pos !== 0)))
      {
        $baseUrl = substr($requestUri, 0, $pos + strlen($baseUrl));
      }
    }
    $this->_baseUrl = rtrim($baseUrl, '/');
    return $this;
  }
  public function getBaseUrl($raw = false)
  {
    if (null === $this->_baseUrl) {
      $this->setBaseUrl();
    }
    return (($raw == false) ? urldecode($this->_baseUrl) : $this->_baseUrl);
  }
  public function setBasePath($basePath = null)
  {
    if ($basePath === null) {
      $filename = (isset($_SERVER['SCRIPT_FILENAME']))
           ? basename($_SERVER['SCRIPT_FILENAME'])
           : '';
      $baseUrl = $this->getBaseUrl();
      if (empty($baseUrl)) {
        $this->_basePath = '';
        return $this;
      }
      if (basename($baseUrl) === $filename) {
        $basePath = dirname($baseUrl);
      } else {
        $basePath = $baseUrl;
      }
    }
    if (substr(PHP_OS, 0, 3) === 'WIN') {
      $basePath = str_replace('\\', '/', $basePath);
    }
    $this->_basePath = rtrim($basePath, '/');
    return $this;
  }
  public function getBasePath()
  {
    if (null === $this->_basePath) {
      $this->setBasePath();
    }
    return $this->_basePath;
  }
  public function setPathInfo($pathInfo = null)
  {
    if ($pathInfo === null) {
      $baseUrl = $this->getBaseUrl(); // this actually calls setBaseUrl() & setRequestUri()
      $baseUrlRaw = $this->getBaseUrl(false);
      $baseUrlEncoded = urlencode($baseUrlRaw);
      if (null === ($requestUri = $this->getRequestUri())) {
        return $this;
      }
      // Remove the query string from REQUEST_URI
      if ($pos = strpos($requestUri, '?')) {
        $requestUri = substr($requestUri, 0, $pos);
      }
      if (!empty($baseUrl) || !empty($baseUrlRaw)) {
        if (strpos($requestUri, $baseUrl) === 0) {
          $pathInfo = substr($requestUri, strlen($baseUrl));
        } elseif (strpos($requestUri, $baseUrlRaw) === 0) {
          $pathInfo = substr($requestUri, strlen($baseUrlRaw));
        } elseif (strpos($requestUri, $baseUrlEncoded) === 0) {
          $pathInfo = substr($requestUri, strlen($baseUrlEncoded));
        } else {
          $pathInfo = $requestUri;
        }
      } else {
        $pathInfo = $requestUri;
      }
    }
    $this->_pathInfo = (string) $pathInfo;
    return $this;
  }
  public function getPathInfo()
  {
    if (empty($this->_pathInfo)) {
      $this->setPathInfo();
    }
    return $this->_pathInfo;
  }
  public function setParamSources(array $paramSources = array())
  {
    $this->_paramSources = $paramSources;
    return $this;
  }
  public function getParamSources()
  {
    return $this->_paramSources;
  }
  public function setParam($key, $value)
  {
    $key = (null !== ($alias = $this->getAlias($key))) ? $alias : $key;
    parent::setParam($key, $value);
    return $this;
  }
  public function getParam($key, $default = null)
  {
    $keyName = (null !== ($alias = $this->getAlias($key))) ? $alias : $key;
    $paramSources = $this->getParamSources();
    if (isset($this->_params[$keyName])) {
      return $this->_params[$keyName];
    } elseif (in_array('_GET', $paramSources) && (isset($_GET[$keyName]))) {
      return $_GET[$keyName];
    } elseif (in_array('_POST', $paramSources) && (isset($_POST[$keyName]))) {
      return $_POST[$keyName];
    }
    return $default;
  }
  public function getParams()
  {
    $return    = $this->_params;
    $paramSources = $this->getParamSources();
    if (in_array('_GET', $paramSources)
      && isset($_GET)
      && is_array($_GET)
    ) {
      $return += $_GET;
    }
    if (in_array('_POST', $paramSources)
      && isset($_POST)
      && is_array($_POST)
    ) {
      $return += $_POST;
    }
    return $return;
  }
  public function setParams(array $params)
  {
    foreach ($params as $key => $value) {
      $this->setParam($key, $value);
    }
    return $this;
  }
  public function setAlias($name, $target)
  {
    $this->_aliases[$name] = $target;
    return $this;
  }
  public function getAlias($name)
  {
    if (isset($this->_aliases[$name])) {
      return $this->_aliases[$name];
    }
    return null;
  }
  public function getAliases()
  {
    return $this->_aliases;
  }
  public function getMethod()
  {
    return $this->getServer('REQUEST_METHOD');
  }
  public function isPost()
  {
    if ('POST' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isGet()
  {
    if ('GET' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isPut()
  {
    if ('PUT' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isDelete()
  {
    if ('DELETE' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isHead()
  {
    if ('HEAD' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isOptions()
  {
    if ('OPTIONS' == $this->getMethod()) {
      return true;
    }
    return false;
  }
  public function isXmlHttpRequest()
  {
    return ($this->getHeader('X_REQUESTED_WITH') == 'XMLHttpRequest');
  }
  public function isFlashRequest()
  {
    $header = strtolower($this->getHeader('USER_AGENT'));
    return (strstr($header, ' flash')) ? true : false;
  }
  public function isSecure()
  {
    return ($this->getScheme() === self::SCHEME_HTTPS);
  }
  public function getRawBody()
  {
    if (null === $this->_rawBody) {
      $body = file_get_contents('php://input');
      if (strlen(trim($body)) > 0) {
        $this->_rawBody = $body;
      } else {
        $this->_rawBody = false;
      }
    }
    return $this->_rawBody;
  }
  public function getHeader($header)
  {
    if (empty($header)) {
      require_once 'Zend/Controller/Request/Exception.php';
      throw new Zend_Controller_Request_Exception('An HTTP header name is required');
    }
    // Try to get it from the $_SERVER array first
    $temp = 'HTTP_' . strtoupper(str_replace('-', '_', $header));
    if (isset($_SERVER[$temp])) {
      return $_SERVER[$temp];
    }
    // This seems to be the only way to get the Authorization header on
    // Apache
    if (function_exists('apache_request_headers')) {
      $headers = apache_request_headers();
      if (isset($headers[$header])) {
        return $headers[$header];
      }
      $header = strtolower($header);
      foreach ($headers as $key => $value) {
        if (strtolower($key) == $header) {
          return $value;
        }
      }
    }
    return false;
  }
  public function getScheme()
  {
    return ($this->getServer('HTTPS') == 'on') ? self::SCHEME_HTTPS : self::SCHEME_HTTP;
  }
  public function getHttpHost()
  {
    $host = $this->getServer('HTTP_HOST');
    if (!empty($host)) {
      return $host;
    }
    $scheme = $this->getScheme();
    $name  = $this->getServer('SERVER_NAME');
    $port  = $this->getServer('SERVER_PORT');
    if(null === $name) {
      return '';
    }
    elseif (($scheme == self::SCHEME_HTTP && $port == 80) || ($scheme == self::SCHEME_HTTPS && $port == 443)) {
      return $name;
    } else {
      return $name . ':' . $port;
    }
  }
  public function getClientIp($checkProxy = true)
  {
    if ($checkProxy && $this->getServer('HTTP_CLIENT_IP') != null) {
      $ip = $this->getServer('HTTP_CLIENT_IP');
    } else if ($checkProxy && $this->getServer('HTTP_X_FORWARDED_FOR') != null) {
      $ip = $this->getServer('HTTP_X_FORWARDED_FOR');
    } else {
      $ip = $this->getServer('REMOTE_ADDR');
    }
    return $ip;
  }
}

從上述類的實(shí)現(xiàn)，不難看出，類為我們提供了很多方便的方法來獲取需要的數(shù)據(jù)。例如：

模塊名可通過getModuleName()和setModuleName()訪問。
控制器名可通過getControllerName()和setControllerName()訪問。
控制器調(diào)用的動(dòng)作名稱可通過getActionName()和setActionName()訪問。
可訪問的參數(shù)是一個(gè)鍵值對(duì)的關(guān)聯(lián)數(shù)組。數(shù)組可通過getParams()和 setParams()獲取及設(shè)置，單個(gè)參數(shù)可以通過 getParam() 和 setParam()獲取及設(shè)置。

基于請(qǐng)求的類型存在更多的可用方法。默認(rèn)的Zend_Controller_Request_Http請(qǐng)求對(duì)象，擁有訪問請(qǐng)求url、路徑信息、$_GET 和 $_POST參數(shù)的方法等等。

請(qǐng)求對(duì)象先被傳入到前端控制器。如果沒有提供請(qǐng)求對(duì)象，它將在分發(fā)過程的開始、任何路由過程發(fā)生之前實(shí)例化。請(qǐng)求對(duì)象將被傳遞到分發(fā)鏈中的每個(gè)對(duì)象。

而且，請(qǐng)求對(duì)象在測(cè)試中是很有用的。開發(fā)人員可根據(jù)需要搭建請(qǐng)求環(huán)境，包括模塊、控制器、動(dòng)作、參數(shù)、URI等等，并且將其傳入前端控制器來測(cè)試程序流向。如果與響應(yīng)對(duì)象配合，可以對(duì)MVC程序進(jìn)行精確巧妙的單元測(cè)試(unit testing)。

HTTP 請(qǐng)求

訪問請(qǐng)求數(shù)據(jù)

Zend_Controller_Request_Http封裝了對(duì)相關(guān)值的訪問，如控制器和動(dòng)作路由器變量的鍵名和值，從URL解析的附加參數(shù)。它還允許訪問作為公共成員的超全局變量，管理當(dāng)前的基地址(Base URL)和請(qǐng)求URI。超全局變量不能在請(qǐng)求對(duì)象中賦值，但可以通過setParam/getParam方法設(shè)定/獲取用戶參數(shù)。

Note: 超全局?jǐn)?shù)據(jù)

通過Zend_Controller_Request_Http訪問公共成員屬性的超全局?jǐn)?shù)據(jù),有必要認(rèn)識(shí)到一點(diǎn)，這些屬性名(超全局?jǐn)?shù)組的鍵)按照特定次序匹配超全局變量：1. GET，2.POST，3. COOKIE，4. SERVER，5. ENV。

特定的超全局變量也可以選擇特定的方法來訪問，如$_POST['user']可以調(diào)用請(qǐng)求對(duì)象的getPost('user')訪問，getQuery()可以獲取$_GET元素，getHeader()可以獲取請(qǐng)求消息頭。

Note: GET和POST數(shù)據(jù)

需要注意：在請(qǐng)求對(duì)象中訪問數(shù)據(jù)是沒有經(jīng)過任何過濾的，路由器和分發(fā)器根據(jù)任務(wù)來驗(yàn)證過濾數(shù)據(jù)，但在請(qǐng)求對(duì)象中沒有任何處理。

Note: 也獲取原始（Raw） POST 數(shù)據(jù)！

從 1.5.0 開始，也可以通過 getRawBody() 方法獲取原始 post 數(shù)據(jù)。如果沒有數(shù)據(jù)以那種方式提交，該方法返回 false，但 post 的全體（full boday）是個(gè)例外。

當(dāng)開發(fā)一個(gè) RESTful MVC 程序，這個(gè)對(duì)于接受內(nèi)容相當(dāng)有用。

可以在請(qǐng)求對(duì)象中使用setParam() 和getParam()來設(shè)置和獲取用戶參數(shù)。路由器根據(jù)請(qǐng)求URI中的參數(shù)，利用這項(xiàng)功能請(qǐng)求對(duì)象設(shè)定參數(shù)。

Note: getParam()不只可以獲取用戶參數(shù)

getParam()事實(shí)上從幾個(gè)資源中獲取參數(shù)。根據(jù)優(yōu)先級(jí)排序：通過setParam()設(shè)置的用戶參數(shù)，GET 參數(shù)，最后是POST參數(shù)。通過該方法獲取數(shù)據(jù)時(shí)需要注意這點(diǎn)。

如果你希望從你通過 setParam() 設(shè)置的參數(shù)中獲?。▍?shù)），使用 getUserParam()。

另外，從 1.5.0 開始，可以鎖定搜索哪個(gè)參數(shù)源，setParamSources() 允許指定一個(gè)空數(shù)組或者一個(gè)帶有一個(gè)或多個(gè)指示哪個(gè)參數(shù)源被允許（缺省兩者都被允許）的值 '_GET'或'_POST'的數(shù)組；如果想限制只訪問 '_GET'，那么指定 setParamSources(array('_GET')) 。

Note: Apache相關(guān)

如果使用apache的404處理器來傳遞請(qǐng)求到前端控制器，或者使用重寫規(guī)則(rewrite rules)的PT標(biāo)志，URI包含在$_SERVER['REDIRECT_URL']，而不是$_SERVER['REQUEST_URI']。如果使用這樣的設(shè)定并獲取無效的路由，應(yīng)該使用Zend_Controller_Request_Apache404類代替默認(rèn)的HTTP類：

$request = new Zend_Controller_Request_Apache404();
$front->setRequest($request);

這個(gè)類繼承了Zend_Controller_Request_Http，并簡(jiǎn)單的修改了請(qǐng)求URI的自動(dòng)發(fā)現(xiàn)(autodiscovery)，它可以用來作為簡(jiǎn)易替換器件(drop-in replacement)。
基地址和子目錄

Zend_Controller_Request_Http允許在子目錄中使用Zend_Controller_Router_Rewrite。Zend_Controller_Request_Http試圖自動(dòng)的檢測(cè)你的基地址，并進(jìn)行相應(yīng)的設(shè)置。

例如，如果將 index.php 放在web服務(wù)器的名為/projects/myapp/index.php子目錄中，基地址應(yīng)該被設(shè)置為/projects/myapp。計(jì)算任何路由匹配之前將先從路徑中去除這個(gè)字符串。這個(gè)字串需要被加入到任何路由前面。路由 'user/:username'將匹配類似http://localhost/projects/myapp/user/martel 和http://example.com/user/martel的URL。

Note: URL檢測(cè)區(qū)分大小寫

基地址的自動(dòng)檢測(cè)是區(qū)分大小寫的，因此需要確保URL與文件系統(tǒng)中的子目錄匹配。否則將會(huì)引發(fā)異常。

如果基地址經(jīng)檢測(cè)不正確，可以利用Zend_Controller_Request_Http或者Zend_Controller_Front類的setBaseUrl()方法設(shè)置自己的基路徑。Zend_Controller_Front設(shè)置最容易，它將導(dǎo)入基地址到請(qǐng)求對(duì)象。定制基地址的用法舉例：

/**
 * Dispatch Request with custom base URL with Zend_Controller_Front.
 */
$router   = new Zend_Controller_Router_Rewrite();
$controller = Zend_Controller_Front::getInstance();
$controller->setControllerDirectory('./application/controllers')
      ->setRouter($router)
      ->setBaseUrl('/projects/myapp'); // set the base url!
$response  = $controller->dispatch();

判斷請(qǐng)求方式

getMethod() 允許你決定用于請(qǐng)求當(dāng)前資源的 HTTP 請(qǐng)求方法。另外，當(dāng)詢問是否一個(gè)請(qǐng)求的特定類型是否已經(jīng)存在，有許多方法允許你獲得布爾響應(yīng)：

isGet()
isPost()
isPut()
isDelete()
isHead()
isOptions()

這些基本用例是來創(chuàng)建 RESTful MVC 架構(gòu)的。

AJAX 請(qǐng)求

Zend_Controller_Request_Http 有一個(gè)初步的方法用來檢測(cè)AJAX請(qǐng)求：isXmlHttpRequest()。這個(gè)方法尋找一個(gè)帶有'XMLHttpRequest' 值的HTTP請(qǐng)求頭X-Requested-With；如果發(fā)現(xiàn)，就返回true。

當(dāng)前，這個(gè)頭用下列JS庫(kù)缺省地傳遞：
Prototype/Scriptaculous (and libraries derived from Prototype)
Yahoo! UI Library
jQuery
MochiKit

大多數(shù) AJAX 庫(kù)允許發(fā)送定制的HTTP請(qǐng)求頭；如果你的庫(kù)沒有發(fā)送這個(gè)頭，簡(jiǎn)單地把它作為一個(gè)請(qǐng)求頭添加上確保isXmlHttpRequest() 方法工作。
子類化請(qǐng)求對(duì)象。

請(qǐng)求對(duì)象是請(qǐng)求環(huán)境的容器。控制器鏈實(shí)際上只需要知道如何設(shè)置和獲取控制器、動(dòng)作，可選的參數(shù)以及分發(fā)的狀態(tài)。默認(rèn)的，請(qǐng)求將使用controller和action鍵查詢自己的參數(shù)來確定控制器和動(dòng)作。

需要一個(gè)請(qǐng)求類來與特定的環(huán)境交互以獲得需要的數(shù)據(jù)時(shí)，可以擴(kuò)展該基類或它的衍生類。例如HTTP環(huán)境，CLI環(huán)境，或者PHP-GTK環(huán)境。

更多關(guān)于zend相關(guān)內(nèi)容感興趣的讀者可查看本站專題：《Zend FrameWork框架入門教程》、《php優(yōu)秀開發(fā)框架總結(jié)》、《Yii框架入門及常用技巧總結(jié)》、《ThinkPHP入門教程》、《php面向?qū)ο蟪绦蛟O(shè)計(jì)入門教程》、《php+mysql數(shù)據(jù)庫(kù)操作入門教程》及《php常見數(shù)據(jù)庫(kù)操作技巧匯總》

希望本文所述對(duì)大家PHP程序設(shè)計(jì)有所幫助。

您可能感興趣的文章: