Spring+jpa连接多个数据库
1.persistence.xml

<?xml version="1.0" encoding="UTF-8"?><persistence xmlns="http://java.sun.com/xml/ns/persistence"    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">    <persistence-unit name="DBNAME1"    transaction-type="RESOURCE_LOCAL">    <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>    <class>cn.wiztek.hprms.domain.Building</class><class>cn.db.domain.tablename1</class>    <properties>        <property name="openjpa.Log" value="log4j"/>    </properties>  </persistence-unit>   <persistence-unit name="DBNAME2"    transaction-type="RESOURCE_LOCAL">    <provider>org.apache.openjpa.persistence.PersistenceProviderImpl</provider>    <class>cn.db2.domain.tablename1</class>    <properties>        <property name="openjpa.Log" value="log4j"/>    </properties>  </persistence-unit></persistence>

2.ApplicationContext.xml(写了两个。。还有个ApplicationContext1.xml内容差不多)

<bean id="dataSource"/><property name="url"value="jdbc:db2://127.0.0.1:50000/testdb" /><property name="username" value="username" /><property name="password" value="pwd" /></bean><bean id="entityManagerFactory"value="DBNAME1" /><property name="dataSource"><ref bean="dataSource" /></property><property name="jpaVendorAdapter"><beanname="code">public class BeansFactory {private static Resource res = null;//new ClassPathResource("/cn/wiztek/remis/config/service.xml");//new ClassPathResource("/cn/wiztek/remis/config/service.xml");private static BeanFactory factory = null;//new XmlBeanFactory(res);//new XmlBeanFactory(res);static {try {System.out.println("!!!");res = new ClassPathResource("ApplicationContext.xml");factory = new XmlBeanFactory(res);} catch (Throwable ex) {System.err.println(ex);ex.printStackTrace();throw new ExceptionInInitializerError(ex);}}public static Object getBean(String beanName){return factory.getBean(beanName);}}

<context-param><param-name>contextConfigLocation</param-name><param-value>classpath:applicationContext.xml</param-value></context-param>
这里怎么配置