zend-framework2 - Zend 框架 2 - Cookie 概念

Question

我冲浪了很多。我想使用 COOKIE 分配和检索一个值。ZF2怎么办？我看到了很多在 cookie 中赋值的例子。请解释如何从 cookie 中检索值。

Answer 1

HTTP 中的 cookie（参见RFC 2109只是存储在请求中的内容，并在每次发出请求时发送。响应可以添加其他参数以额外存储到现有的 cookie 中。

因此 cookie检索是通过Request, 来更新您使用的 cookie 完成的Response。根据 RFC 2109，您分别使用Cookie标头和Set-Cookie标头。因此，您可以通过以下方式直接访问这些标头

$this->getRequest()->getHeaders()->get('Cookie')->foo = 'bar';

或通过以下方式设置 cookie：

$this->getResponse()->getHeaders()->get('Set-Cookie')->foo = 'bar';

事情变得容易了一些，因为在请求和响应中有一个代理可以直接访问 cookie：

public function fooAction()
{
  $param = $this->getRequest()->getCookie()->bar;

  $this->getResponse()->getCookie()->baz = 'bat';
}

请记住Cookie和Set-Cookie标头实现ArrayObject对象。要检查请求中是否存在 cookie，您可以使用offsetExists：

if ($cookie->offsetExists('foo')) {
    $param = $cookie->offsetGet('foo');
}

/更新：

如果您想修改 cookie 的属性，您也在此处修改Set-Cookie标头。查看Github 上的类，了解所有可用的方法。

一个小小的总结：

$cookie = $this->getResponse()->getCookie();
$cookie->foo = 'bar';
$cookie->baz = 'bat';

$this->setDomain('www.example.com');
$this->setExpires(time()+60*60*24*30);

Answer 2

通过 cookie 访问$this->getResponse()->getCookie()有效，但冗长且令人厌烦。所以我做了什么，我扩展了 Response 和 Request 类。这是它的样子：

'service_manager' => array (
    'factories' => array (
        'Request' => 'Application\Mvc\Request\Factory',
        'Response' => 'Application\Mvc\Response\Factory',
    )
);

模块/Application/src/Application/Mvc/Request/Factory.php

namespace Application\Mvc\Request;

use Zend\Console\Request as ConsoleRequest;
use Zend\Console\Console;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

class Factory implements FactoryInterface
{
    public function createService (ServiceLocatorInterface $serviceLocator)
    {
        if (Console::isConsole ())
        {
            return new ConsoleRequest ();
        }

        return new HttpRequest ();
    }
}

模块/Application/src/Application/Mvc/Request/HttpRequest.php

namespace Application\Mvc\Request;
use Zend\Http\PhpEnvironment\Request;

class HttpRequest extends Request
{
    public function hasCookie ($name)
    {
        assert ('is_string($name)');

        $cookie = $this->getCookie();
        if (empty ($cookie))
        {
            return false;
        }

        if (isset ($cookie [$name]))
        {
            return true;
        }

        return false;
    }


    public function cookie ($name, $default = null)
    {
        assert ('is_string($name)');

        if ($this->hasCookie($name))
        {
            $cookie = $this->getCookie();
            return $cookie [$name];
        }

        return $default;
    }
}

模块/Application/src/Application/Mvc/Response/Factory.php

namespace Application\Mvc\Response;

use Zend\Console\Response as ConsoleResponse;
use Zend\Console\Console;
use Zend\ServiceManager\FactoryInterface;
use Zend\ServiceManager\ServiceLocatorInterface;

class Factory implements FactoryInterface
{
    public function createService (ServiceLocatorInterface $serviceLocator)
    {
        if (Console::isConsole ())
        {
            return new ConsoleResponse ();
        }
        return new HttpResponse ();
    }
}

模块/Application/src/Application/Mvc/Response/HttpResponse.php

namespace Application\Mvc\Response;

use Zend\Http\PhpEnvironment\Response;
use Zend\Http\Header\SetCookie;

class HttpResponse extends Response
{
    public function addCookie ($name, $value, $expires = null, $path = null, $domain = null, $secure = false, $httponly = false, $maxAge = null, $version = null)
    {
        $cookie = new SetCookie ($name, $value, $expires, $path, $domain, $secure, $httponly, $maxAge, $version);
        $this->getHeaders ()
            ->addHeader ($cookie);
    }
}

现在，我可以更轻松地访问 cookie。

$this->getRequest ()->cookie ('ptime');
$this->getRequest ()->cookie ('alarm', 'last');

和

$this->getResponse ()->addCookie ('ptime', time ());