jpa的hibernate实现与eclipselnk实现的配置

classpath（如：src）下面META-INF/persistence.xml

以下示例：

eclipselink的

<?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="xxxpu" transaction-type="RESOURCE_LOCAL">
  <provider>org.eclipse.persistence.jpa.PersistenceProvider</provider>
      <class>cn.com.xx.jpa.po.xxx</class>  
      <class>cn.com.xx.jpa.po.yyy</class>  
　　<properties>
      <property name="javax.persistence.jdbc.driver"   value="oracle.jdbc.driver.OracleDriver" /> 
      <property name="javax.persistence.jdbc.url"      value="jdbc:oracle:thin:@192.168.1.3:1521:ORCL" />
      <property name="javax.persistence.jdbc.user"     value="xx" />
      <property name="javax.persistence.jdbc.password" value="yy" />
    </properties>
 </persistence-unit>

</persistence>

hibernate + proxxol的

<?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="xxxpu" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>cn.com.xx.jpa.po.xxx</class>  
      
　　　　　　<class>cn.com.xx.jpa.po.yyy</class>  
        <properties>
            <property name="hibernate.connection.provider_class"
                value="org.hibernate.connection.ProxoolConnectionProvider" />
            <property name="hibernate.proxool.pool_alias"
                value="xxx_xx" />
            <property name="hibernate.proxool.xml" value="proxool.xml" />
            <property name="hibernate.dialect"
                value="org.hibernate.dialect.OracleDialect" />
            <property name="hibernate.hbm2ddl.auto" value="none" />
            <property name="hibernate.show_sql" value="true" />
            
        </properties>
    </persistence-unit>

</persistence>

<?xml version="1.0" encoding="UTF-8"?>

<something-else-entirely>
    <proxool>
    <alias>xxx_xx</alias>
    <driver-url><![CDATA[jdbc:oracle:thin:@192.168.1.3:1521:ORCL]]></driver-url>
    <driver-class>oracle.jdbc.driver.OracleDriver</driver-class>
    <driver-properties>
      <property name="user" value="xx"/>
      <property name="password" value="yy"/>
    </driver-properties>
    <minimum-connection-count>1</minimum-connection-count> 
    <maximum-connection-count>10</maximum-connection-count>
    <test-before-use>true</test-before-use>
    <house-keeping-test-sql>select 1 from dual</house-keeping-test-sql>
    <house-keeping-sleep-time>900000</house-keeping-sleep-time>
    <maximum-active-time>3600000</maximum-active-time>
  </proxool>
</something-else-entirely>

在spring配置文件中配置jpa

<?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:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context" xmlns:tx="http://www.springframework.org/schema/tx"
    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/context 
    http://www.springframework.org/schema/context/spring-context-2.5.xsd">

<!--就是这个了        -->
    <bean id="entityManagerFactory"
        class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="xxxpu" />
    </bean>

<!--注解扫描-->
    <context:component-scan base-package="cn.com.xxx" >    </context:component-scan>
       
<!--事物（可以使用其他方式）        -->        
    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />        
    </bean>
<!--加@Transactional注解使用事物        -->   
<tx:annotation-driven transaction-manager="transactionManager" />   
    
    </beans>