spring JPA struts 整合开发(1) - spring集成JPA

一. spring JPA struts 整合开发(1) - spring集成JPA
二. spring JPA struts 整合开发(2) - spring集成struts


这里的JPA实现是hibernate。

1. 在IDE中新建一个web工程，Resource设置成utf-8

2. 导入以下的jar包到/WEB-INF/lib目录下：

Hibernate 3安装包下的:
hibernate3.jar
lib\required\*.jar
lib\test\slf4j-log4j12.jar

spring 2.5 安装包下的：
dist\spring.jar
dist\modules\spring-webmvc-struts.jar
lib\jakarta-commons\common-logging.jar commons-dbcp.jar commons-pool.jar
lib\aspectj\aspectjweaver.jar aspectjrt.jar
lib\cglib\cglib-nodep-2.1_3.jar
lib\j2ee\common-annotations.jar
lib\log4j\log4j-1.2.15.jar

下载struts-1.3.8-lib.zip，解压目录下的所有jar

3. spring配置文件：

拷贝一个beans.xml的模板到src目录下，

beans.xml内容：

<?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: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/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd"
         >
	<context:annotation-config/>

	<!-- JPA entity manager factory bean, like the session factory of hibernate -->
	<bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
		<!-- Retrieved the persistence information from persistence.xml -->
		<property name="persistenceUnitName" value="sparkle" />
	</bean>

	<!-- Transaction manager -->
	<bean id="txManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory" />
	</bean>
	
	<tx:annotation-driven transaction-manager="txManager"/>
</beans>

4. JPA配置文件

在src目录下创建META-INF子目录并新建persistence.xml文件：

<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_2_0.xsd"
	version="2.0">
	<persistence-unit name="sparkle" transaction-type="RESOURCE_LOCAL">
		<properties>
			<property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
 			<property name="hibernate.connection.url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=UTF-8"/>
			<property name="hibernate.connection.username" value="root"/>
			<property name="hibernate.connection.password" value="123456"/>
			<property name="hibernate.max_fetch_depth" value="3"/>
			<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect"/>
			<property name="hibernate.hbm2ddl.auto" value="update"/>
			<property name="hibernate.show_sql" value="true"/>
		</properties>
	</persistence-unit>	
</persistence>

5. 实体bean

创建com.john.bean.Person类

// It is recommended to let the bean implement Serializable interface and override equals and hashCode methods
@Entity
public class Person implements {
	private Integer id;
	private String name;
	public Person() { }
	public Person(String name) {
		this.name = name;
	}
	@Id @GeneratedValue
	public Integer getId() {
		return id;
	}
	public void setId(Integer id) {
		this.id = id;
	}
	@Column(length=30, nullable=false)
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
}

6. 业务bean

创建com.john.service.PersonServiceBean类

@Transactional
public class PersonSeriveBean {
	@PersistenceContext EntityManager em;
	
	public void save(Person person) {
		em.persist(person);
	}
	
	public void update(Person person) {
		em.merge(person);
	}
	
	public void delete(Integer id) {
		em.remove(em.getReference(Person.class, id));
	}
	
	@Transactional(propagation=Propagation.NOT_SUPPORTED, readOnly=true)
	public Person getPerson(Integer id) {
		return em.find(Person.class, id);
	}
	
	@Override
	@Transactional(propagation=Propagation.NOT_SUPPORTED, readOnly=true)
	public List<Person> getPersons() {
		return em.createQuery("select p FROM Person p").getResultList();
	}

抽取PersonService接口。

7. junit test

新建junit.test.PersonServiceTest测试类：

public class PersonServiceTest {
	private static PersonService personService;

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
		try {
			AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
			personService = (PersonService)ctx.getBean("personService");
		} catch (Exception e) {
			e.printStackTrace();
		}
	}

	@Test
	public void testSave() {
		personService.save(new Person("John"));
	}

	// Other test methods are omitted
}

整理自：传智播客spring教程