我正在使用symfony 4.2构建一个Api,并希望使用jms-serializer以Json格式序列化我的数据,安装后使用
composer需要jms / serializer-bundle
当我尝试这样使用它时:
``` demands = $demandRepo->findAll();
return $this->container->get('serializer')->serialize($demands,'json');```
它给了我这个错误:
Service "serializer" not found, the container inside "App\Controller\DemandController" is a smaller service locator that only knows about the "doctrine", "http_kernel", "parameter_bag", "request_stack", "router" and "session" services. Try using dependency injection instead.
正如我在评论中所说,您可以使用Symfony的默认序列化程序并使用它由构造函数注入它。
//...
use Symfony\Component\Serializer\SerializerInterface;
//...
class whatever
{
private $serializer;
public function __constructor(SerializerInterface $serialzer)
{
$this->serializer = $serializer;
}
public function exampleFunction()
{
//...
$data = $this->serializer->serialize($demands, "json");
//...
}
}
假设您有一个名为Foo.php
的实体,它有id
,name
和description
并且你想只返回id
和name
消费特定的API,如foo/summary/
在另一种情况下需要返回description
以及foo/details
这里的序列化器非常有用。
use JMS\Serializer\Annotation as Serializer;
/*
* @Serializer\ExclusionPolicy("all")
*/
class Foo {
/**
* @Serializer\Groups({"summary", "details"})
* @Serializer\Expose()
*/
private $id;
/**
* @Serializer\Groups({"summary"})
* @Serializer\Expose()
*/
private $title;
/**
* @Serializer\Groups({"details"})
* @Serializer\Expose()
*/
private $description;
}
让我们使用序列化器来获取数据取决于组
class FooController {
public function summary(Foo $foo, SerializerInterface $serialzer)
{
$context = SerializationContext::create()->setGroups('summary');
$data = $serialzer->serialize($foo, json, $context);
return new JsonResponse($data);
}
public function details(Foo $foo, SerializerInterface $serialzer)
{
$context = SerializationContext::create()->setGroups('details');
$data = $serialzer->serialize($foo, json, $context);
return new JsonResponse($data);
}
}
最后我发现使用Symfony序列化器的答案非常简单:
作曲家需要symfony / serializer
.....//
use Symfony\Component\Serializer\SerializerInterface;
use Symfony\Component\HttpFoundation\JsonResponse;
// .....
.... //
/**
* @Route("/demand", name="demand")
*/
public function index(SerializerInterface $serializer)
{
$demands = $this->getDoctrine()
->getRepository(Demand::class)
->findAll();
if($demands){
return new JsonResponse(
$serializer->serialize($demands, 'json'),
200,
[],
true
);
}else{
return '["message":"ooooops"]';
}
}
//......
并与它,我没有发现依赖关系或DateTime或其他问题的任何问题;)