Spring3+Hibernate3(Jpa) 配置多个数据源的解决方案（基于注解）

昨天在技术问答区，发出了这个问题，首先感谢大家给出的回复，但是还没能解决问题。刚刚又仔细的思考下，并查了些资料，终于解决了。下面贴出自己的解决方法：主要是配置文件和如何写注解

----------------配置文件

<?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">

    <!--配置mysql数据源-->
    <persistence-unit name="mysql" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <non-jta-data-source>mysqlDataSource</non-jta-data-source>
       <!--这里的class是指要储存于本数据库的Entity-->
        <class>com.sunhope.model.core.ExternalEnvironment</class>   
       
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>
            <property name="hibernate.archive.autodetection" value="false"/>
            <property name="hibernate.transaction.auto_close_session" value="false"/>
            <property name="hibernate.hbm2ddl.auto" value="update" />
        </properties>
    </persistence-unit>
    <!--配置postgre数据源-->
    <persistence-unit name="postgre" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
       
        <non-jta-data-source>postgreDataSource</non-jta-data-source>

        <class>com.sunhope.model.baseinfo.BdStorageCompany</class>
        <class>com.sunhope.model.baseinfo.BdHouseType</class>
        <class>com.sunhope.model.baseinfo.BdStorage</class>
        <class>com.sunhope.model.core.StoreEnvironment</class>
       
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.PostgreSQLDialect"/>
            <property name="hibernate.archive.autodetection" value="false"/>
            <property name="hibernate.transaction.auto_close_session" value="false"/>
            <property name="hibernate.hbm2ddl.auto" value="update" />
        </properties>
    </persistence-unit>
   
</persistence>

 

<?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:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
            http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
            http://www.springframework.org/schema/tx
            http://www.springframework.org/schema/tx/spring-tx-3.0.xsd">
            
    <bean id="defaultPersistenceUnitManager"
		class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
		<property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"/>
		<!--  comment dataSourceLooup to use jndi -->
		<property name="dataSourceLookup">
			<bean
				class="org.springframework.jdbc.datasource.lookup.BeanFactoryDataSourceLookup" />
		</property>
	</bean>
	
	<!-- #########################PostgreSql####################### -->	
	<tx:annotation-driven transaction-manager="postgreEntityManagerFactory"/>
	
	<bean id="postgreJpaVendor"
		class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
		 <property name="showSql" value="true" />
         <property name="generateDdl" value="true" />
	</bean>		
	
    <bean id="postgreDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
       <property name="driverClassName" value="org.postgresql.Driver"/>
       <property name="url" value="..."/>
       <property name="username" value="..."/>
       <property name="password" value="..."/>
		<property name="initialSize" value="1"/>
		<property name="maxActive" value="100"/>
		<property name="maxIdle" value="8"/>
		<property name="minIdle" value="1"/>
    </bean>
    
    <bean id="postgreEntityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="persistenceUnitManager" ref="defaultPersistenceUnitManager" />
		<property name="persistenceUnitName" value="postgre" />
		<property name="jpaVendorAdapter" ref="postgreJpaVendor" />
		<property name="loadTimeWeaver">
			<bean
				class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
		</property>
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect">
			</bean>
		</property>
	</bean>      	
		
	<bean id="postgreTransactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="postgreEntityManagerFactory" />
		<qualifier value="postgreEM" />
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
		</property>
	</bean>
	
	<!--########################MySql################################# -->	
	<tx:annotation-driven transaction-manager="mysqlEntityManagerFactory"/>
	
	<bean id="mysqlJpaVendor"
		class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
		 <property name="showSql" value="true" />
         <property name="generateDdl" value="true" />
	</bean>
	
	<bean id="mysqlDataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
       <property name="driverClassName" value="org.gjt.mm.mysql.Driver"/>
       <property name="url" value="..."/>
       <property name="username" value="..."/>
       <property name="password" value="..."/>
		<property name="initialSize" value="1"/>
		<property name="maxActive" value="100"/>
		<property name="maxIdle" value="8"/>
		<property name="minIdle" value="1"/>
    </bean>
    
	<bean id="mysqlEntityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<property name="persistenceUnitManager" ref="defaultPersistenceUnitManager" />
		<property name="persistenceUnitName" value="mysql" />
		<property name="jpaVendorAdapter" ref="mysqlJpaVendor" />
		<property name="loadTimeWeaver">
			<bean
				class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
		</property>
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect">
			</bean>
		</property>
	</bean>
	
	<bean id="mysqlTransactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="mysqlEntityManagerFactory" />
		<qualifier value="mysqlEM" />
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect" />
		</property>
	</bean>
	
</beans>

 

 -----------注解 DAO

@Transactional(value="mysqlEM")
public class MySqlBaseDaoImpl<T> implements IMySqlBaseDao<T>{
    @PersistenceContext(unitName="mysql")
    protected EntityManager em;
    
    //......
}

 

@Transactional(value="postgreEM")
public class PostgreSqlBaseDaoImpl<T> implements IPostgreSqlBaseDao<T>{
    @PersistenceContext(unitName="postgre")
    protected EntityManager em;

    //.......
}

 

-------------------------------------Service

@Service
@Transactional(value="mysqlEM")
public class ExternalEnvironmentServiceImpl extends
MySqlBaseDaoImpl<ExternalEnvironment> implements IExternalEnvironmentService {

}

 

@Service
@Transactional(value="postgreEM")
public class BdStorageCompanyServiceImpl extends PostgreSqlBaseDaoImpl<BdStorageCompany>
		implements IBdStorageCompanyService {

}

 

-------------------------------------Model(Entity)-------------------------------------------------------------

@Entity(name = "TBL_BDSTORAGECOMPANY")
public class BdStorageCompany extends BaseModel {
   
   //.......

}

 

@Entity(name = "TBL_EXTERNALENVIRONMENT")
public class ExternalEnvironment extends BaseModel{

    //......

}