使用Symfony Validator作为独立时无法读取注释

Question

我收到此错误:

消息:"[语义错误]属性User :: $ name中的注释"@Symfony\Component\Validator\Constraints\Length"不存在,或者无法自动加载."

这是Github上的代码https://github.com/symfony/Validator

use Symfony\Component\Validator\Validation; 
use Symfony\Component\Validator\Constraints as Assert;

class User {
    /**
     * @Assert\Length(min = 3)
     * @Assert\NotBlank
     */
    private $name;

    /**
     * @Assert\Email
     * @Assert\NotBlank
     */
    private $email;

    public function __construct($name, $email)
    {
        $this->name = $name;
        $this->email = $email;
    }

    /**
     * @Assert\True(message = "The user should have a Google Mail account")
     */
    public function isGmailUser()
    {
        return false !== strpos($this->email, '@gmail.com');
    } 
}

$validator = Validation::createValidatorBuilder()
    ->enableAnnotationMapping()
    ->getValidator();

$user = new User('John Doe', 'john@example.com');

$violations = $validator->validate($user);

我该如何解决这个问题？

Answer 1

Doctrine不使用自动加载PHP,您必须使用autoloadRegistry注册:

AnnotationRegistry::registerAutoloadNamespace("Symfony\Component\Validator\Constraint", "path/to/symfony/library/validator");

Answer 2

使用 Symfony\Component\Validator\Constraints 作为断言；

    /**
     * @var float $weight
     *
     * @ORM\Column(name="weight", type="decimal",precision=3,scale=2, nullable=true)
     * 
     * @Assert\Range(
     *      min = "90",
     *      max = "350",
     *      minMessage = "You must weight at least 90",
     *      maxMessage = "You cannot weight more than 300"


     * )

     * @Assert\NotBlank(groups={"group one","goup 2"}) 
     * @Assert\Regex(pattern= "/[0-9]/",message="Require number only") 
     */
    private $weight=0;