1. 在app/etc/local.xml 中，添加新的数据库选项
<?xml version="1.0"?>
<!--
/**
* Magento
*
* NOTICE OF LICENSE
*
* This source file is subject to the Academic Free License (AFL 3.0)
* that is bundled with this package in the file LICENSE_AFL.txt.
* It is also available through the world-wide-web at this URL:
* http://opensource.org/licenses/afl-3.0.php
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@magentocommerce.com so we can send you a copy immediately.
*
* DISCLAIMER
*
* Do not edit or add to this file if you wish to upgrade Magento to newer
* versions in the future. If you wish to customize Magento for your
* needs please refer to http://www.magentocommerce.com for more information.
*
* @category Mage
* @package Mage_Core
* @copyright Copyright (c) 2008 Irubin Consulting Inc. DBA Varien (http://www.varien.com)
* @license http://opensource.org/licenses/afl-3.0.php Academic Free License (AFL 3.0)
*/
-->
<config>
<global>
<install>
<date><![CDATA[Tue, 05 Jul 2011 03:23:52 +0000]]></date>
</install>
<crypt>
<key><![CDATA[80eb4be66ce28df745f27c75f2604d33]]></key>
</crypt>
<disable_local_modules>false</disable_local_modules>
<resources>
<db>
<table_prefix><![CDATA[]]></table_prefix>
</db>
<default_setup>
<connection>
<host><![CDATA[localhost]]></host>
<username><![CDATA[root]]></username>
<password><![CDATA[]]></password>
<dbname><![CDATA[hello]]></dbname>
<active>1</active>
</connection>
</default_setup>
<vip_space_read>
<connection>
<host><![CDATA[localhost]]></host>
<username><![CDATA[root]]></username>
<password><![CDATA[]]></password>
<dbname><![CDATA[hello_dev_test]]></dbname>
<model>mysql4</model>
<initStatements>SET NAMES utf8</initStatements>
<type>pdo_mysql</type>
<active>1</active>
</connection>
</vip_space_read>
</resources>
<session_save><![CDATA[files]]></session_save>
</global>
<admin>
<routers>
<adminhtml>
<args>
<frontName><![CDATA[hello_admin]]></frontName>
</args>
</adminhtml>
</routers>
</admin>
</config>
2. 在需要使用的不同数据库的model resource中，重写 _setResource 方法，例如
class Hello_Vip_Model_Entity_Vip_Adapter extends Mage_Core_Model_Mysql4_Abstract
{
protected $_logFile = 'vip.adapter.log';
protected function _construct()
{
$this->_setResource(array('read' =>'vip_space_read', 'write' =>'vip_space_read'));
}
经过以上两步，就能在某个model中使用不同的数据库
[文章标题] magento项目中使用多个数据库的方法
[文章作者]曾健生
[作者邮箱]zengjiansheng1@126.com
[作者QQ]190678908
[博客] http://blog.csdn.net/newjueqi
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