在简单的bundle类中使用容器在Symfony 2中不起作用

Question

我的错误：

参数1传递给Agc\ManagerBundle\Lib\grafica::（）必须实现接口Symfony\Component\DependencyInject\ContainerInterface，无给定，在第20行的C：\wamp\www\galileo\src\Agc\BackendBundle\Controller\DefaultController.php中调用并定义在C：\wamp\www\galileo\src\Agc\ManagerBundle\Lib\grafica.php行10

我的班级格拉菲卡：

<?php
namespace Agc\ManagerBundle\Lib;

use Symfony\Component\DependencyInjection\ContainerInterface;
/**
 * @Route(service="srv_grafica")
 */
class grafica
{
    private $container, $conn, $bdnmgi;

    public function __construct(ContainerInterface $container)
    {
        $this->container = $container;
        $this->conn = $this->getConn();
        $this->bdnmgi = $this->getBd();
    }

    public function getConn(){
        return $this->container->get('database_connection');
    }
    public function getBd(){
        return $this->container->get('security.context')->getToken()->getUser()->getAdministracion()->getNombreEsquemamgi();
    }

\ManagerBundle\Resources\config\services。yml

services:
    srv_grafica:
        class: Agc\ManagerBundle\Lib\grafica
        arguments:
            - '@service_container'

我的默认控制器：

class DefaultController extends Controller
{
    public function dashboardAction(Request $peticion)
    {
        $em = $this->getDoctrine()->getManager('customer_1');
        $user= $this->get('security.context')->getToken()->getUser();
        $esquema = $user->getAdministracion()->getNombreEsquemamgi();
        var_dump($esquema);
        $grafica = new grafica();

Answer 1

这是错误的：

$grafica = new grafica();

应该是：

$grafica = $this->get('srv_grafica');

Answer 2

您需要将容器传递给您的服务，下面是如何在services.yml中执行的示例

services:

    srv_grafica:
        class: Agc\ManagerBundle\Lib\grafica
        arguments:
            - '@service_container'