Symfony 3.4 没有元数据类来处理错误

我已经安装了 symfony 3.4 和 学说包

"php": ">=5.5.9",
        "doctrine/doctrine-bundle": "^1.8",
        "doctrine/doctrine-migrations-bundle": "^1.3",
        "doctrine/orm": "^2.5",
        "incenteev/composer-parameter-handler": "^2.0",
        "sensio/distribution-bundle": "^5.0.19",
        "sensio/framework-extra-bundle": "^5.0.0",
        "symfony/monolog-bundle": "^3.1.0",
        "symfony/polyfill-apcu": "^1.0",
        "symfony/swiftmailer-bundle": "^2.6.4",
        "symfony/symfony": "3.4.*",
        "twig/twig": "^1.0||^2.0"

使用以下命令创建数据库

php bin/console doctrine:database:create

G:\XAMPP\htdocs\project>php bin/console doctrine:schema:validate
[Mapping]  OK - The mapping files are correct.
[Database] OK - The database schema is in sync with the mapping files.

G:\XAMPP\htdocs\project>php bin/console doctrine:schema:validate
[Mapping]  OK - The mapping files are correct.
[Database] OK - The database schema is in sync with the mapping files.

G:\XAMPP\htdocs\project>php bin/console doctrine:schema:update --force
No Metadata Classes to process.

G:\XAMPP\htdocs\project>

每当我运行 php bin/consoledoctrine:schema:update --force 命令时，它都会抛出类似的错误

没有要处理的元数据类。

我按照文档创建了实体类http://symfony.com/doc/3.4/doctrine.html http://symfony.com/doc/3.4/doctrine.html

产品实体类

<?php

namespace AppBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="product")
 */
class Product
{
    /**
     * @ORM\Column(type="integer")
     * @ORM\Id
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    private $id;

    /**
     * @ORM\Column(type="string", length=100)
     */
    private $name;

    /**
     * @ORM\Column(type="decimal", scale=2)
     */
    private $price;


    /**
     * Get id
     *
     * @return int
     */
    public function getId()
    {
        return $this->id;
    }

    /**
     * Set name
     *
     * @param string $name
     *
     * @return Product
     */
    public function setName($name)
    {
        $this->name = $name;

        return $this;
    }

    /**
     * Get name
     *
     * @return string
     */
    public function getName()
    {
        return $this->name;
    }

    /**
     * Set price
     *
     * @param integer $price
     *
     * @return Product
     */
    public function setPrice($price)
    {
        $this->price = $price;

        return $this;
    }

    /**
     * Get price
     *
     * @return int
     */
    public function getPrice()
    {
        return $this->price;
    }
}

是的，我终于发现问题出在John.orm.php我运行时会生成的文件php bin/console doctrine:generate:entity

我使用以下命令创建了实体类

php bin/console doctrine:generate:entity

然后会提示

Welcome to the Doctrine2 entity generator

This command helps you generate Doctrine2 entities.

First, you need to give the entity name you want to generate.
You must use the shortcut notation like AcmeBlogBundle:Post.

The Entity shortcut name: AppBundle:John

Determine the format to use for the mapping information.

Configuration format (yml, xml, php, or annotation) [annotation]: php

Instead of starting with a blank entity, you can add some fields now.
Note that the primary key will be added automatically (named id).

Available types: array, simple_array, json_array, object,
boolean, integer, smallint, bigint, string, text, datetime, datetimetz,
date, time, decimal, float, binary, blob, guid.

New field name (press <return> to stop adding fields): id
 Field "id" is already defined.
New field name (press <return> to stop adding fields): username
Field type [string]: string
Field length [255]:
Is nullable [false]: true
Unique [false]: false

New field name (press <return> to stop adding fields): password
Field type [string]:
Field length [255]:
Is nullable [false]: true
Unique [false]:

New field name (press <return> to stop adding fields): dob
Field type [string]: date
Is nullable [false]: true
Unique [false]:

New field name (press <return> to stop adding fields):


  Entity generation


  created .\src\AppBundle/Entity/John.php
  created .\src\AppBundle/Resources/config/doctrine/
  created .\src\AppBundle/Resources/config/doctrine/John.orm.php
> Generating entity class G:\XAMPP\htdocs\project\src\AppBundle\Entity\John.php:
 OK!
> Generating repository class G:\XAMPP\htdocs\project\src\AppBundle\Repository\J
ohnRepository.php: OK!
> Generating mapping file G:\XAMPP\htdocs\project\src\AppBundle\Resources\config
\doctrine\John.orm.php: OK!


  Everything is OK! Now get to work :).



G:\XAMPP\htdocs\project>

成功后它将创建实体类AppBundle\Entity;文件夹和存储库类AppBundle\Repository;它还会生成John.orm.php in AppBundle\Resources\config\doctrine\John.orm.php

如果我运行删除 John.orm.php 文件后php bin/console doctrine:schema:update --force然后它会生成表格。