ZF2 ServiceManager

Question

我尝试在没有MVC模块的情况下使用来自ServiceManager的zf2。我有两个文件: classServiceManager.php和sm.php。

1) classServiceManager.php:

namespace ZF2;

use Zend\ServiceManager\ServiceManager; 
use Zend\ServiceManager\ServiceLocatorAwareInterface; 
use Zend\ServiceManager\ServiceLocatorInterface; 
use \InvalidArgumentException;  

class classServiceManager implements ServiceLocatorAwareInterface{
    protected $serviceLocator;

    function __construct(){
        //echo "SM: ". $this->getServiceLocator()->get('sm');
        echo "SM: ".$this->serviceLocator->get('sm');

    }

    function setServiceLocator(ServiceLocatorInterface $serviceLocator) {
        $this->serviceLocator = $serviceLocator;
      }

    function getServiceLocator() {
        return $this->serviceLocator;
    }       

}

2) sm.php

$config = array(...);

require_once 'Zend/Loader/AutoloaderFactory.php';
Zend\Loader\AutoloaderFactory::factory($config); 
......  
use ZF2\classServiceManager;

$serviceManager = new ServiceManager();
$serviceManager->setService('sm', 'aaa');   

$a = new classServiceManager();

但是当我运行sm.php时，我会得到一个错误：

Fatal error: Call to a member function get() on a non-object....

Answer 1

默认情况下，Zend注册一个初始化器，将Zend\ServiceManager\ServiceLocatorAwareInterface.实例(Zend\ServiceLocatorInterface的实现)注入到实现ServiceManager的任何类中

因此，ServiceLocatorAwareInterface只在MVC应用中使用。

如果您想使用没有MVC的ServiceManager，您需要自己创建一个ServiceManager。

这是我的

namespace Westdc\Service;

use Zend\ServiceManager\ServiceManager as Zend_ServiceManager;

class ServiceManager {

private $serviceManager;

function __construct()
{
    $this->serviceManager = new Zend_ServiceManager;
    $this->serviceManager->addAbstractFactory(new ServiceFactory);

    $configService = $this->serviceManager->get('ConfigService');
    $invoked_services = $configService->get('service.invoked.ini');

    foreach($invoked_services as $k=>$v) {
        $this->serviceManager->setInvokableClass($k, $v);
    }
}

public function addKey($key,$value = "")
{
    if(!empty($value))
        $this->serviceManager->$key($value);
    else
        $this->serviceManager->$key();
}

public function setServiceManager(Zend_ServiceManager $service)
{
    $this->serviceManager = $service;
}

public function getServiceManager()
{
    return $this->serviceManager;
}

} 

这是我使用它时的例子。

use Westdc\Service\ServiceManager;

$serviceManager = new ServiceManager();
$serviceManager = $serviceManager->getServiceManager();

$authService = $serviceManager->get('Auth');

Answer 2

现在我不太确定我的答案是否100%正确，但你正在做一些奇怪的事情;)

1. 不要命名类classServiceManager，这必然会在理解代码时造成冲突。
2. 你的classServiceManager并没有神奇地得到ZF2的ServiceManager注射。每当从ServiceManager调用类时，注入就会发生。

所以基本上你需要做的是：

$originalSM = new ServiceManager();
$originalSM->setService('csm', 'ZF2\classServiceManager');

$a = $orignalSM->get('csm');

这样，你的ServiceManager就会从ZF2的ServiceManager中被调用，然后你的ServiceManager就会知道ZF2的情况，因为它会被注入。

然而，：您的ServiceManager将不知道在__construct()上的情况。注入通过SetterInjection进行，因此必须先创建对象，然后才能调用setter。

我的解释可能有点奇怪，但我希望你能利用它。