Symfony数据库教程代码错误

Question

我已经成功安装和设置了Symfony 2并且一直在关注文档.

我目前正在访问http://symfony.com/doc/2.0/book/doctrine.html

一切都很好,直到我到达这一行:

php app/console doctrine:generate:entities Acme/StoreBundle/Entity/Product

此时我收到以下错误:

[RuntimeException]

The autoloader expected class "Acme\StoreBundle\Entity\Product" to be defined
in file "C:\Program Files (x86)\Apache Software Foundation\Apache2.2\htdocs\Symf
ony\app/../src\Acme\StoreBundle\Entity\Product.php". The file was found but the
class was not in it, the class name or namespace probably has a typo.

在Linux和Windows机器上都发生过这种情况.

Product.php的内容与教程一致:

// src/Acme/StoreBundle/Entity/Product.php
namespace Acme\StoreBundle\Entity;

use Doctrine\ORM\Mapping as ORM;

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

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

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

    /**
     * @ORM\Column(type="text")
     */
    protected $description;
}

Answer 1

该消息来自DebugUniversalClassLoader.php:

public function loadClass($class)
{
    if ($file = $this->findFile($class)) {
        require $file;

        if (!class_exists($class, false) && !interface_exists($class, false)) {
            throw new \RuntimeException(sprintf('The autoloader expected class "%s" to be defined in file "%s". The file was found but the class was not in it, the class name or namespace probably has a typo.', $class, $file));
        }
    }
}

因此,该文件必须在那里,和可读性,否则,findFile和require不会奏效.所有这些检查都在做require()文件,然后使用标准的PHP class_exists()来查看该类是否在那里.

我能想到的唯一一件事可能会导致这些消息给出这些文件内容:你错过<?php了文件的开头.现在,我知道这有点不合时宜,但老实说,我不能想到任何其他不会引起其他错误的事情.