自己弄清楚了这一点之后，我想对如何实现这一点有所启发。

Symfony 2和Doctrine 2.1
注：我使用YML进行配置，这就是我要显示的内容。

使用说明

1. 打开捆绑包的 Resources / config / services.yml

2. 定义表前缀参数：
   确保更改 mybundle 和 _myprefix__

   parameters:
   mybundle.db.table_prefix: myprefix_
   

3. 添加新服务：

services:
mybundle.tblprefix_subscriber:
    class: MyBundle\Subscriber\TablePrefixSubscriber
    arguments: [%mybundle.db.table_prefix%]
    tags:
        - { name: doctrine.event_subscriber }

1. 创建 MyBundle \ Subscriber \ TablePrefixSubscriber.php

<?php
namespace MyBundle\Subscriber;

use Doctrine\ORM\Event\LoadClassMetadataEventArgs;

class TablePrefixSubscriber implements \Doctrine\Common\EventSubscriber
{
protected $prefix = '';

public function __construct($prefix)
{
    $this->prefix = (string) $prefix;
}

public function getSubscribedEvents()
{
    return array('loadClassMetadata');
}

public function loadClassMetadata(LoadClassMetadataEventArgs $args)
{
    $classMetadata = $args->getClassMetadata();
    if ($classMetadata->isInheritanceTypeSingleTable() && !$classMetadata->isRootEntity()) {
        // if we are in an inheritance hierarchy, only apply this once
        return;
    }

    $classMetadata->setTableName($this->prefix . $classMetadata->getTableName());

    foreach ($classMetadata->getAssociationMappings() as $fieldName => $mapping) {
        if ($mapping['type'] == \Doctrine\ORM\Mapping\ClassMetadataInfo::MANY_TO_MANY 
                && array_key_exists('name', $classMetadata->associationMappings[$fieldName]['joinTable']) ) {     // Check if "joinTable" exists, it can be null if this field is the reverse side of a ManyToMany relationship
            $mappedTableName = $classMetadata->associationMappings[$fieldName]['joinTable']['name'];
            $classMetadata->associationMappings[$fieldName]['joinTable']['name'] = $this->prefix . $mappedTableName;
        }
    }
}       
}