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Spring视频学习(十一)整合Hibernate3.2

1.整合的jar包

Spring2.5+Hibernate3.3+Struts1.3整合开发

hibernate核心安装包下的:
hibernate3.jar
lib\required\*.jar
lib\optional\ehcache-1.2.3.jar
hibernate 注解安装包下的
lib\test\slf4j-log4j12.jar
Spring安装包下的
dist\spring.jar
dist\modules\spring-webmvc-struts.jar
lib\jakarta-commons\commons-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
Struts
下载struts-1.3.8-lib.zip,需要使用到解压目录下的所有jar,建议把jstl-1.0.2.jar和standard-1.0.2.jar更换为1.1版本。Spring中已经存在一个antlr-2.7.6.jar,所以把struts中的antlr-2.7.2.jar删除,避免jar冲突。
数据库驱动jar

先整合Spring和Hibernate,测试好了再整合Struts。

2.新建项目

配置spring的xml文件,将sessionFactory由spring管理,配置spring管理hiberante的事务:

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


	<!-- 配置数据源 -->   
  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">   
    <property name="driverClassName" value="com.mysql.jdbc.Driver"/>   
    <property name="url" value="jdbc:mysql://localhost:3306/test?useUnicode=true&amp;characterEncoding=utf-8"/>   
    <property name="username" value="root"/>   
    <property name="password" value=""/>   
     <!-- 连接池启动时的初始值 -->   
     <property name="initialSize" value="1"/>   
     <!-- 连接池的最大值 -->   
     <property name="maxActive" value="500"/>   
     <!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->   
     <property name="maxIdle" value="2"/>   
     <!--  最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->   
     <property name="minIdle" value="1"/>   
  </bean>  
  
  <!-- 配置hibernate的sessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
	<property name="dataSource"><ref bean="dataSource" /></property>
	 <property name="mappingResources">
		    <list>
		      <value>com/persia/model/Person.hbm.xml</value>
		    </list>
		 </property>
	 <property name="hibernateProperties">
		    <value>
		        hibernate.dialect=org.hibernate.dialect.MySQL5Dialect
		        hibernate.hbm2ddl.auto=update
		        hibernate.show_sql=false
		        hibernate.format_sql=false
		        hibernate.cache.use_second_level_cache=true
       	        hibernate.cache.use_query_cache=false
        	    hibernate.cache.provider_class=org.hibernate.cache.EhCacheProvider
		      </value>
	     </property>
</bean>

<!-- 配置spring针对hibernate的事务管理器 -->
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
	  	<property name="sessionFactory" ref="sessionFactory"/>
</bean>

<!-- 配置使用注解的方式来使用事务 -->	
<tx:annotation-driven transaction-manager="txManager"/>

<!-- 使用手工配置的注解方式来注入bean -->
<context:annotation-config></context:annotation-config>

<!--定义要注入的业务bean -->
<bean id="personService" class="com.persia.service.impl.PersonServiceImpl"></bean>

</beans>

其中,person的hibernate配置文件如下:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
        "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.persia.model">
    <class name="Person" table="person">
    	<!--  cache usage="read-write" region="com.persia.model.Person"/>-->
        <id name="id">
            <generator class="native"/>
        </id>
        <property name="name" length="30" not-null="true"/>
    </class>
</hibernate-mapping>

3.编写业务bean:

import java.util.List;
import javax.annotation.Resource;
import org.hibernate.SessionFactory;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.persia.model.Person;
import com.persia.service.IPersonService;

@Transactional
public class PersonServiceImpl implements IPersonService {

	@Resource
	private SessionFactory sessionFactory;
	public void save(Person person){
		//得到spring容器管理的session.在方法执行前打开事务,结束时关闭事务。
		sessionFactory.getCurrentSession().persist(person);
	}

	public void update(Person person){
		//用于把游离的更新同步到数据库
		sessionFactory.getCurrentSession().merge(person);
	}
	
	public void delete(Integer id){
		sessionFactory.getCurrentSession().delete(
				//无需装载数据,效率高
		         sessionFactory.getCurrentSession().load(Person.class, id)		
		);
	}
	
	@Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)
	public Person getPerson(Integer id){
		return (Person) sessionFactory.getCurrentSession().get(Person.class, id);
	}
	
	@SuppressWarnings("unchecked")
	@Transactional(propagation=Propagation.NOT_SUPPORTED,readOnly=true)
	public List<Person> getPersons(){
		
		return sessionFactory.getCurrentSession().createQuery("from Person").list();
	}
	
}

其中使用注解配置事务,然后使用注解配置spring的依赖注入。

对于读取操作配置无不需要事务,并且配置级别为只读。

4.对业务bean进行junit测试:

package junit.test;

import static org.junit.Assert.*;

import java.util.List;

import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.persia.model.Person;
import com.persia.service.IPersonService;

public class IPersonServiceTest {

	private static IPersonService ps;
	
	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	  try {
		ApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml");
		  ps=(IPersonService) ctx.getBean("personService");
	    } catch (Exception e) {
		// TODO Auto-generated catch block
		e.printStackTrace();
	    }
	}

	//@Test
	public void testSave() {
		ps.save(new Person("hello"));
	}

	//@Test
	public void testUpdate() {
		Person p=ps.getPerson(5);
		p.setName("linda");
		ps.update(p);
	}

	//@Test
	public void testGetPerson() {
		System.out.println(ps.getPerson(5).getName());
	}

	@Test
	public void testDelete() {
		ps.delete(5);
	}

	//@Test
	public void testGetPersons() {
		List<Person> ls=ps.getPersons();
		for(Person p:ls){
			System.out.println(p.getName());
		}
	}

}
 
至此,spring和hiberante的集成已经完成。
 

posted on 2009-07-22 10:33  cxccbv  阅读(583)  评论(0编辑  收藏  举报

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