依赖注入 – 如何在TYPO3 Extbase扩展中包含或自动加载外部库？

我正在开发一个带有Extbase 1.4的TYPO3 4.6扩展,我试图包含一个外部库.该库,在我的情况下是 facebook PHP SDK,在$_EXTKEY / Resources / PHP / facebook-php-sdk / facebook.php下.我想图书馆自动加载并自动注入(Dependecy Injection)我需要的地方.

我在网上发现的一些评论建议应该包含带require_once()的库：

http://forge.typo3.org/issues/33142

1. if it’s just a tiny helper library,it’s intended to be stored in {PackageRoot}/Resources/PHP/{libraryName} and just included via require. is this suspected by the problem however?
2. if the FLOW3 package mainly represents the foreing library at all,like it’s the case in Imagine or Swift package,the library code is put below {PackageRoot}/Classes directly.”

http://lists.typo3.org/pipermail/typo3-project-typo3v4mvc/2011-July/009946.html

“I would include the class (using require_once) from within a specific action to handle this. That way you have access over those functions and the class becomes your library.”

我试过这个,它的工作原理如下：

<?php
require_once( t3lib_extMgm::extPath('extkey') . 'Resources/PHP/facebook-php-sdk/facebook.php');

class Tx_WsLogin_Domain_Repository_FacebookUserRepository extends Tx_WsLogin_Domain_Repository_UserRepository {

protected $facebook;

public function __construct() {
    $this->setFacebook(new Facebook(array(
        'appId' =>'','secret' => '')
    ));
    parent::__construct();
}

public function setFacebook(Facebook $facebook) {
    $this->facebook = $facebook;
}


public function sampleFunction() {
    $userId = $this->facebook->getUser();
}

}
?>

但是如何让它自动加载并使用injectFacebook函数自动注入库？

编辑：

像@alex_schnitzler和@sorenmalling提到的关于自动加载：

@PeterTheOne Put all the files inside ext_autoload.php and then use DI or the object manager.

@PeterTheOne put the class definition into ext_autoload.php in your extension?

我试过这样的(文件：ext_autoload.php)：

<?php

$extPath = t3lib_extMgm::extPath('extKey');

return array(
    'facebook' => $extPath . 'Resources/PHP/facebook-php-sdk/facebook.php',);

?>

它似乎找到并包含正确的文件.但是当我尝试使用依赖注入(如peter answered)时,我收到一个错误：

not a correct info array of constructor dependencies was passed!

InvalidArgumentException thrown in file /var/syscp/webs/web1/dev/typo3_src-4.5.15/typo3/sysext/extbase/Classes/Object/Container/Container.php in line 247.

我想这是因为Facebook类的构造函数有一个必需的$config参数.

EDIT2：

我做了peter在他的回答中所说的,并且在@alex_schnitzler和@sorenmalling的帮助下,我指向了ObjectManager,我的FacebookService现在看起来像这样：

class Tx_Extkey_Service_FacebookService implements t3lib_Singleton {

/**
* @var Tx_Extbase_Object_ObjectManagerInterface
*/
protected $objectManager;

/**
 * Facebook from @link https://github.com/facebook/facebook-php-sdk facebook-php-sdk
 *
 * @var Facebook
 */
protected $facebook;

/**
* @param Tx_Extbase_Object_ObjectManagerInterface $objectManager
*/
public function injectObjectManager(Tx_Extbase_Object_ObjectManagerInterface $objectManager) {
    $this->objectManager = $objectManager;
}

/**
 * 
 */
public function initializeObject() {
    $this->facebook = $this->objectManager->create(
        'Facebook',array(
            'appId' =>'input appId here','secret' => 'input app secret here'
        )
    );
}

/**
 * @return Facebook
 */
public function getFacebook() {
    return $this->facebook;
}

}

有关更多帮助,请阅读：http://forge.typo3.org/projects/typo3v4-mvc/wiki/Dependency_Injection_(DI)关于initializeObject()和通过对象管理器创建原型对象的部分

/**
 * @var Facebook
 */
protected $facebook;

/**
 * inject the facebook
 *
 * @param Facebook facebook
 * @return void
 */
public function injectFacebook(Facebook $facebook) {
    $this->facebook = $facebook;
}