Spring+jpa连接多个数据库

1.persistence.xml

    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">

        	transaction-type="RESOURCE_LOCAL">
    org.apache.openjpa.persistence.PersistenceProviderImpl
	    cn.wiztek.hprms.domain.Building
		cn.db.domain.tablename1
    
        
    
  
       	transaction-type="RESOURCE_LOCAL">
    org.apache.openjpa.persistence.PersistenceProviderImpl
	    cn.db2.domain.tablename1
    
        
    
  

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

		class="org.apache.commons.dbcp.BasicDataSource"
		destroy-method="close">
					value="com.ibm.db2.jcc.DB2Driver" />
					value="jdbc:db2://127.0.0.1:50000/testdb" />
		
		
	

			class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		
		
			
		
		
							class="org.springframework.orm.jpa.vendor.OpenJpaVendorAdapter">
			
		
	

两个文件里面唯一不同的就是dataSource分别连接两个数据库，persistenceUnitName分别为DBNAME1和DBNAME2。
3.BeansFactory.java (还是两个，ClassPathResource分别写的ApplicationContext.xml和ApplicationContext1.xml)

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);
	}
}