Spring jpa配置

1． pom.xml

<dependency>    <groupId>org.hibernate</groupId>    <artifactId>hibernate-entitymanager</artifactId>    <version>4.2.3.Final</version></dependency><dependency>    <groupId>com.oracle</groupId>    <artifactId>ojdbc14</artifactId>    <version>9.0.2.0.0</version></dependency><dependency>    <groupId>javax.persistence</groupId>    <artifactId>persistence-api</artifactId>    <version>1.0</version></dependency><dependency>    <groupId>org.springframework.data</groupId>    <artifactId>spring-data-jpa</artifactId>    <version>1.3.2.RELEASE</version></dependency><dependency>    <groupId>javax.validation</groupId>    <artifactId>validation-api</artifactId>    <version>1.1.0.Final</version></dependency><dependency>    <groupId>javax.annotation</groupId>    <artifactId>javax.annotation-api</artifactId>    <version>1.2</version></dependency><dependency>    <groupId>org.hibernate</groupId>    <artifactId>hibernate-validator</artifactId>    <version>5.2.4.Final</version></dependency>

2．spring-orm.xml

<!-- 配置EntityManagerFactory --><bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">   <property name="persistenceUnitName" value="test" />   <property name="persistenceXmlLocation" value="classpath:META-INF/persistence.xml"></property></bean><!-- 配置jpa的事务管理器 --><bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">   <property name="entityManagerFactory" ref="entityManagerFactory"></property></bean><tx:annotation-driven transaction-manager="transactionManager" /><!-- Hibernate对Jpa的实现 --><bean id="hibernateJpaVendorAdapter" class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter"/>

３． 在工程的src目录下新建META-INF文件夹, 在此文件夹中新建persistence.xml

<?xml version="1.0" encoding="UTF-8"?><persistence version="2.0"    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_2_0.xsd">    <persistence-unit name="test" transaction-type="RESOURCE_LOCAL">        <provider>org.hibernate.ejb.HibernatePersistence</provider>        <properties>            <property name="hibernate.connection.driver_class" value="oracle.jdbc.driver.OracleDriver" />            <property name="hibernate.connection.url" value="jdbc:oracle:thin:@144.131.254.240:1521:nbcsora" />            <property name="hibernate.connection.username" value="papp" />            <property name="hibernate.connection.password" value="papp" />            <property name="hibernate.show_sql" value="true" />            <property name="hibernate.format_sql" value="false" />            <property name="hibernate.hbm2ddl.auto" value="update" />            <property name="javax.persistence.validation.mode" value="none" />        </properties>    </persistence-unit></persistence

４． UserDao

public interface UserDao {    public User save(User user);    public User get(Long id);    public List query();}

1. UserDaoImpl

import javax.persistence.EntityManager;import javax.persistence.PersistenceContext;import javax.persistence.Query;import org.springframework.stereotype.Repository;import org.springframework.transaction.annotation.Transactional;import com.ecs.model.User;@Repositorypublic class UserDaoImpl implements UserDao  {    @PersistenceContext(unitName="test")    private EntityManager entityManager;    @Transactional(rollbackFor=Exception.class)    public User save(User user){         entityManager.persist(user);         return null;    }    @Transactional(readOnly=true)    public User get(Long id){        User user = entityManager.find(User.class, id);        return user;    }    @Transactional(readOnly=true)    public List query(){        Query query = entityManager.createNativeQuery("select * from test_user");        List list = query.getResultList();        return list;    }}

5．springmvc配置中引入配置文件

<context:component-scan base-package="com.ecs.*" /><import resource="classpath:/jpa/spring-orm.xml"/>

6．测试

public class TestMain {    private ClassPathXmlApplicationContext context = null;    @Before    public void before() {        String configLocation[] = { "classpath*:servlet-context.xml" };        context = new ClassPathXmlApplicationContext(configLocation);        context.start();    }    // @Test    public void save() {        UserDao userService = (UserDao) context.getBean("userDaoImpl");        User user = new User();        user.setName("张三");        user.setAddress("李四");        userService.save(user);    }    // @Test    public void get() {        UserDao userService = (UserDao) context.getBean("userDaoImpl");        User user = userService.get(1190L);        System.out.println(user.getId());    }    @Test    public void query() {        UserDao userService = (UserDao) context.getBean("userDaoImpl");        List list = userService.query();        Map map = new HashMap();        map.put("total", list.size());        map.put("list", list);        System.out.println(JSONObject.toJSONString(map));    }}