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

2024-05-04 23:43:39
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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。

<?phpabstract 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)。

<?phprequire_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(lái)獲取需要的數(shù)據(jù)。例如:

模塊名可通過(guò)getModuleName()和setModuleName()訪問(wèn)。
控制器名可通過(guò)getControllerName()和setControllerName()訪問(wèn)。
控制器調(diào)用的動(dòng)作名稱可通過(guò)getActionName()和setActionName()訪問(wèn)。
可訪問(wèn)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(guò)getParams()和 setParams()獲取及設(shè)置,單個(gè)參數(shù)可以通過(guò) 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(wèn)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(guò)程的開始、任何路由過(guò)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(lái)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(wèn)請(qǐng)求數(shù)據(jù)

Zend_Controller_Request_Http封裝了對(duì)相關(guān)值的訪問(wèn),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(wèn)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(guò)setParam/getParam方法設(shè)定/獲取用戶參數(shù)。

Note: 超全局?jǐn)?shù)據(jù)

通過(guò)Zend_Controller_Request_Http訪問(wèn)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(lái)訪問(wèn),如$_POST['user']可以調(diào)用請(qǐng)求對(duì)象的getPost('user')訪問(wèn),getQuery()可以獲取$_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(wèn)數(shù)據(jù)是沒有經(jīng)過(guò)任何過(guò)濾的,路由器和分發(fā)器根據(jù)任務(wù)來(lái)驗(yàn)證過(guò)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(guò) 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(lái)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(guò)setParam()設(shè)置的用戶參數(shù),GET 參數(shù),最后是POST參數(shù)。 通過(guò)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(guò) 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(wèn) '_GET',那么指定 setParamSources(array('_GET')) 。

Note: Apache相關(guān)

如果使用apache的404處理器來(lái)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(wú)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(lái)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(wèn)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(lái)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(lái)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(lái)確定控制器和動(dòng)作。

需要一個(gè)請(qǐng)求類來(lái)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。



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