如果查看Zend \ Db \ Adapter \ AdapterServiceFactory，您会看到适配器配置仅指向一个键'db'。这意味着它构建的适配器将始终使用此（唯一）配置密钥。
我建议您创建自己的工厂，如下所示：
namespace Your\Namespace;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;
use Zend\Db\Adapter\Adapter;
class MyAdapterFactory implements FactoryInterface
{
protected $configKey;
public function __construct($key)
{
$this->configKey = $key;
}
public function createService(ServiceLocatorInterface $serviceLocator)
{
$config = $serviceLocator->get('Config');
return new Adapter($config[$this->configKey]);
}
}
在您的主模块（或任何其他模块）中，将以下内容添加到Module.PHP文件中，以将适配器工厂声明为Zend Service Manager：
use Your\Namespace\MyAdapterFactory;
use Zend\ModuleManager\Feature\ServiceProviderInterface;
class Module implements ServiceProviderInterface{
//PrevIoUs code
public function getServiceConfig()
{
return array(
'factories' => array(
'myadapter1' => new MyAdapterFactory('dbconfigkey1'),
'myadapter2' => new MyAdapterFactory('dbconfigkey2'),
),
);
}
//...
现在，全局配置应如下所示：
return array(
'dbconfigkey1' => array(
'driver' => 'Pdo',
'dsn' => 'MysqL:dbname=my_db;host=localhost',
'driver_options' => array(
PDO::MysqL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
'username' => 'user',
'password' => '******',
),
'dbconfigkey2' => array(
'driver' => 'Pdo',
'dsn' => 'MysqL:dbname=my_db2;host=localhost',
'driver_options' => array(
PDO::MysqL_ATTR_INIT_COMMAND => 'SET NAMES \'UTF8\''
),
'username' => 'user',
'password' => '******',
),
);
要使用适配器，您需要使用服务管理器来调用它们：
$adapter1=$serviceManager->get('myadapter1');
$adapter2=$serviceManager->get('myadapter2');
现在，抽象服务工厂已成为zf2 Zend \ Db模块的一部分。可以在“ adapters”子键下添加多个配置键：
'db'=> array(
'adapters'=>array(
'adapter' => array(
'driver' => 'Pdo',
'dsn' => 'MysqL:dbname=test;host=localhost',
'username' => 'readCredential',
'password' => '****'
),
'adapter2' => array(
'driver' => 'Pdo',
'dsn' => 'MysqL:dbname=test;host=localhost',
'username' => 'rwCredential',
'password' => '****'
),
)
),
但是，需要“手动”添加AbstractServiceFactory，因为默认情况下并非如此：
'service_manager' => array(
'abstract_factories' => array(
'Zend\Db\Adapter\AdapterAbstractServiceFactory',
)
),
可以像以前一样访问适配器：
$adapter1=$serviceManager->get('adapter');
$adapter2=$serviceManager->get('adapter2');
从性能角度来看，第二种方法更好：将实例化一个对象（抽象工厂）以（可能）创建不同的适配器。而在以前的方法中，每个配置创建一个对象。
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