JPA

 

Hiberante核心包(8个文件)

hibernate-distribution-3.3.1.GA

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hibernate3.jar

lib/bytecode/cglib/hibernate-cglib-repack-2.1_3.jar

lib/required/*.jar

Hiberante注解包(3个文件)：hibernate-annotations-3.4.0.GA

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hibernate-annotations.jar

lib/ejb3-persistence.jar、hibernate-commons-annotations.jar

Hibernate针对JPA的实现包(3个文件)：hibernate-entitymanager-3.4.0.GA

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hibernate-entitymanager.jar

lib/test/log4j.jar、slf4j-log4j12.jar

 

 

 

 

JPA规范要求在类路径的META-INF目录下放置persistence.xml，文件的名称是固定的，配置模版如下：

<?xml version="1.0"?>

<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="itcast" transaction-type="RESOURCE_LOCAL">

      <properties>

         <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect"/>

         <property name="hibernate.connection.driver_class" value="org.gjt.mm.mysql.Driver"/>

         <property name="hibernate.connection.username" value="root"/>

         <property name="hibernate.connection.password" value="123456"/>

         <property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/itcast?useUnicode=true&amp;characterEncoding=UTF-8"/>

         <property name="hibernate.hbm2ddl.auto" value="update"/>

      </properties>

  </persistence-unit>

</persistence>