如何在ZF2的ServiceManager中注册Zend \ log实例

Question

我想知道通过ZF2中的ServiceManager启动和重新使用Logger实例的最佳方法是什么。 当然，我可以在任何类中使用一个简单的方法，如：

public function getLogger () {
        $this->logger = new Logger();
        $this->logger->addWriter(new Writer\Stream('/log/cms_errors.log'));
        return $logger;
    }

.

但我想知道在global.php中注册类似结构的最佳方法是什么。 到目前为止，我可以

将以下内容添加到global.php

'Zend\Log'=>array(
        'timestampFormat' => 'Y-m-d',
        array(
            'writerName'   => 'Stream',
            'writerParams' => array(
                'stream'   => '/log/zend.log',
            ),
            'formatterName' => 'Simple',            
        ),
    ),

.

如果我尝试通过调用它：

$this->getServiceLocator()->get('Zend\Log')

.

我得到了一个：

Zend\ServiceManager\ServiceManager::get was unable to fetch or create an instance for Zend\Log

.

Answer 1

将以下数据添加到“global.php”

'service_manager' => array(
    'factories' => array(
        'Zend\Log' => function ($sm) {
            $log = new Zend\Log\Logger();
            $writer = new Zend\Log\Writer\Stream('./data/logs/logfile');
            $log->addWriter($writer);

            return $log;
        },
    ),
),

.

然后你将能够调用

$this->getServiceLocator()->get('Zend\Log')->info('Something...');

.

Answer 2

或者更优雅地，您可以设置日志侦听器，并将记录器保留从您的应用程序中解耦。EventManager是一个非常强大的组件，zf2基本上是现在的事件驱动框架。

在您的module.php中，您可以添加一些如下：

// Setup the Zend Logger, pseudocode
$logger = new Logger;
$writer = new Writer;
$logger->addWriter($writer);

// Attach a logging listener for the log event on application level, working code
$events = StaticEventManager::getInstance();
$events->attach('*', 'log', function($event) use ($logger) {
    $target = get_class($event->getTarget());
    $message = $event->getParam('message', 'No message provided');
    $priority = (int) $event->getParam('priority', Logger::INFO);
    $message = sprintf('%s: %s', $target, $message);
    $logger->log($priority, $message);
});

.

然后来自任何地方，例如从控制器中，您可以执行：

$this->getEventManager()->trigger('log', $this, array(
                                                       'priority' => 7, 
                                                       'message' => 'some log message'
                                                      ));

.

Answer 3

也许使用抽象的记录工厂进行配置而不是正常的工厂

http：//framework.zend.com/manual/2.2/en/modules/zend.mvc.services.html#zend-log-loggerabstractserviceFactory

return array(
    'log' => array(
        'Log\App' => array(
            'writers' => array(
                array(
                    'name' => 'stream',
                    'priority' => 1000,
                    'options' => array(
                        'stream' => 'data/logs/app.log',
                    ),
                ),
            ),
        ),
    ),
);

.

Answer 4

请使用绝对路径\

再试一次

$writer = new \Zend\Log\Writer\Stream('log.log');
$logger = new \Zend\Log\Logger($writer);

.

Answer 5

我在Bootstrap中创建了一个默认数据库编写器对象并在ServiceManager中注册它。

public function onBootstrap(MvcEvent $e)
{
    ...

    $serviceManager     = $e->getApplication()->getServiceManager();
    $dbAdapter          = $serviceManager->get('Zend\Db\Adapter\Adapter');

    $writer = new \Zend\Log\Writer\Db($dbAdapter, 'log_database_table');
    $logger = new \Zend\Log\Logger();
    $logger->addWriter($writer);

    // this is optional but nice to have
    \Zend\Log\Logger::registerErrorHandler($logger);

    $serviceManager->setService('Zend\Log', $logger);
}

.

appthtroundcontroller是“servicelocatorawareinterface”的实例。所以我可以打电话给我的控制器

public function indexAction()
{
    ...

    $this->getServiceLocator()->get('Zend\Log')->info('this is a test log message');

    ...
}

.