在SpringSide 3 中使用多个数据库的方法, Spring可以参考
http://www.blogjava.net/youxia/archive/2009/07/15/286916.html
applicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:jee="http://www.springframework.org/schema/jee" xmlns:tx="http://www.springframework.org/schema/tx"
    xmlns:context="http://www.springframework.org/schema/context"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd"
    default-lazy-init="true">

    <description>Spring公共配置文件 </description>

    <!-- 定义受环境影响易变的变量 -->
    <bean class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        <property name="systemPropertiesModeName" value="SYSTEM_PROPERTIES_MODE_OVERRIDE" />
        <property name="ignoreResourceNotFound" value="true" />
        <property name="locations">
            <list>
                <!-- 标准配置 -->
                <value>classpath*:/application.properties</value>
            </list>
        </property>
    </bean>

    <!-- 使用annotation 自动注册bean,并保证@Required,@Autowired的属性被注入 -->
    <context:component-scan base-package="cn.puretext" />

    <!-- 数据源配置,使用应用服务器的数据库连接池 -->
    <jee:jndi-lookup id="dataSourceContent" jndi-name="jdbc/dataSourceContent" />
    <jee:jndi-lookup id="dataSourceIndex" jndi-name="jdbc/dataSourceIndex" />

    <!-- Hibernate配置 -->
    <bean id="sessionFactoryContent" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSourceContent" />
        <property name="namingStrategy">
            <bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
                <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider
                </prop>
                <prop key="hibernate.cache.provider_configuration_file_resource_path">${hibernate.ehcache_config_file}</prop>
            </props>
        </property>
        <property name="packagesToScan" value="cn.puretext.entity.*" />
    </bean>
    <bean id="sessionFactoryIndex" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
        <property name="dataSource" ref="dataSourceIndex" />
        <property name="namingStrategy">
            <bean class="org.hibernate.cfg.ImprovedNamingStrategy" />
        </property>
        <property name="hibernateProperties">
            <props>
                <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
                <prop key="hibernate.show_sql">${hibernate.show_sql}</prop>
                <prop key="hibernate.format_sql">${hibernate.format_sql}</prop>
                <prop key="hibernate.cache.provider_class">org.hibernate.cache.EhCacheProvider
                </prop>
                <prop key="hibernate.cache.provider