Symfony 3.4 记录器服务

Question

当我调用 logger服务在日志文件中获取此信息消息它工作但将此消息写入日志文件中:

php.INFO: User Deprecated: The "logger" service is private, getting it from the container is deprecated since Symfony 3.2 and will fail in 4.0. You should either make the service public, or stop using the container directly and use dependency injection instead. {"exception":"[object] (ErrorException(code: 0): User Deprecated: The \"logger\" service is private, getting it from the container is deprecated since Symfony 3.2 and will fail in 4.0. You should either make the service public, or stop using the container directly and use dependency injection instead. at /home/****/###/PROJECT/vendor/symfony/symfony/src/Symfony/Component/DependencyInjection/Container.php:275)"} []

我的 symfony 版本:3.4.1

Answer 1

正如 Symfony 3.4 中所述，logger MonologBundle 提供的服务和所有其他服务，默认设置为私有(private)。 [sic]
要解决此问题，推荐的方法是使用依赖注入(inject)。
http://symfony.com/doc/3.4/logging.html

namespace AppBundle\Controller;

use Psr\Log\LoggerInterface;
use Symfony\Bundle\FrameworkBundle\Controller\Controller;

class DefaultController extends Controller
{
     public function indexAction(LoggerInterface $logger)
     {
        $logger->info('Your Message');
     }
}

源代码引用: https://github.com/symfony/monolog-bundle/blob/v3.1.0/Resources/config/monolog.xml#L17
对于服务定义，依赖注入(inject)在 autowire 时可用已启用。 [sic]

#app/config/services.yml

services:
    # default configuration for services in *this* file
    _defaults:
        # automatically injects dependencies in your services
        autowire: true
        # automatically registers your services as commands, event subscribers, etc.
        autoconfigure: true
        # this means you cannot fetch services directly from the container via $container->get()
        # if you need to do this, you can override this setting on individual services
        public: false

    # makes classes in src/AppBundle available to be used as services
    # this creates a service per class whose id is the fully-qualified class name
    AppBundle\:
        resource: '../../src/AppBundle/*'
        # you can exclude directories or files
        # but if a service is unused, it's removed anyway
        exclude: '../../src/AppBundle/{Entity,Repository,Tests}'

    #enables dependency injection in controller actions
    AppBundle\Controller\:
        resource: '../../src/AppBundle/Controller'
        public: true
        tags: ['controller.service_arguments']

   #all of your custom services should be below this line
   #which will override the above configurations

    #optionally declare an individual service as public
    #AppBundle\Service\MyService: 
    #    public: true

    #alternatively declare the namespace explicitly as public
    #AppBundle\Service\:
    #    resource: '../../src/AppBundle/Service/*'
    #    public: true

然后要将依赖项注入(inject)服务，您将参数的类型提示添加到构造函数。

namespace AppBundle\Service;

use Psr\Log\LoggerInterface;

class MyService
{

    private $logger;
    
    public function __construct(LoggerInterface $logger)
    {
         $this->logger = $logger;
    }
   
}

如果 autowire已禁用，您可以手动定义服务以注入(inject)记录器别名。

#app/config/services.yml

services:

    AppBundle\Service\MyService:
        arguments: ['@logger']
        public: true

或者，要强制记录器别名可从容器公开访问，您可以在应用程序服务配置中重新声明服务别名。

#app/config/services.yml

services:

    #...
    
    logger:
        alias: 'monolog.logger'
        public: true

除了覆盖配置中的值，您还可以将 logger 设置为编译器传递中的公共(public)服务。 https://symfony.com/doc/4.4/service_container/compiler_passes.html
Symfony Flex

// src/Kernel.php
namespace App;

use Symfony\Bundle\FrameworkBundle\Kernel\MicroKernelTrait;
use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use Symfony\Component\HttpKernel\Kernel as BaseKernel;

class Kernel extends BaseKernel implements CompilerPassInterface
{
    use MicroKernelTrait;

     public function process(ContainerBuilder $container)
     {
        // in this method you can manipulate the service container:
        // for example, changing some container service:
        $container->getDefinition('logger')->setPublic(true);
    }

}

Symfony 捆绑包

// src/AppBundle/AppBundle.php
namespace AppBundle;

use Symfony\Component\HttpKernel\Bundle\Bundle;
use Symfony\Component\DependencyInjection\ContainerBuilder;
use AppBundle\DependencyInjection\Compiler\CustomPass;

class AppBundle extends Bundle
{
    public function build(ContainerBuilder $container)
    {
        parent::build($container);

        $container->addCompilerPass(new CustomPass());
    }
}

// src/AppBundle/DependencyInjection/Compiler/CustomPass.php
namespace AppBundle\DependencyInjection\Compiler;

use Symfony\Component\DependencyInjection\Compiler\CompilerPassInterface;
use Symfony\Component\DependencyInjection\ContainerBuilder;

class CustomPass implements CompilerPassInterface
{
    public function process(ContainerBuilder $container)
    {
        $container->getDefinition('logger')->setPublic(true);
    }
}