Spring与Hibernate的整合 博客分类: 整合 hibernatespring
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2024-03-22 10:37:34
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下面为例子中将要操作的对象
package org.spring.bean; public class Person { private Integer id; private String name; public Person() { } public Person(String name) { this.name = name; } public Integer getId() { return id; } public void setId(Integer id) { this.id = id; } public String getName() { return name; } public void setName(String name) { this.name = name; } }
与Person对象对应的映射文件
<?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="org.spring.bean"> <class name="Person" table="person"> <cache usage="read-write" region="org.spring.bean.Person" /> <id name="id"> <generator class="native" /> </id> <property name="name" length="10" not-null="true" /> </class> </hibernate-mapping>
对Person对象操作的接口
package org.spring.service; import java.util.List; import org.spring.bean.Person; public interface PersonService { public void save(Person person); public void update(Person person); public Person getPerson(Integer personid); public void delete(Integer personid); public List<Person> getPersons(); }
业务bean的实现类
package org.spring.service.impl; import java.util.List; import javax.annotation.Resource; import org.hibernate.SessionFactory; import org.spring.bean.Person; import org.spring.service.PersonService; import org.springframework.transaction.annotation.Propagation; import org.springframework.transaction.annotation.Transactional; @Transactional public class PersonServiceBean implements PersonService { @Resource private SessionFactory sessionFactory; public void save(Person person) { sessionFactory.getCurrentSession().persist(person); } public void update(Person person) { sessionFactory.getCurrentSession().merge(person); } @Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true) public Person getPerson(Integer personid) { return (Person) sessionFactory.getCurrentSession().get(Person.class, personid); } public void delete(Integer personid) { sessionFactory.getCurrentSession() .delete(sessionFactory.getCurrentSession().load(Person.class, personid)); } @Transactional(propagation = Propagation.NOT_SUPPORTED, readOnly = true) @SuppressWarnings("unchecked") public List<Person> getPersons() { return sessionFactory.getCurrentSession().createQuery("from Person") .list(); } }
在获取数据的时候,一般不开启事务,因为事务对性能影响较大
spring.xml配置文件
<?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"> <context:annotation-config /> <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="org.gjt.mm.mysql.Driver" /> <property name="url" value="jdbc:mysql://localhost:3306/springAndHibernate?useUnicode=true&characterEncoding=UTF-8" /> <property name="username" value="root" /> <property name="password" value="mysql" /> <!-- 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> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="dataSource" ref="dataSource" /> <property name="mappingResources"> <list> <value>org/spring/bean/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> <bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory" /> </bean> <tx:annotation-driven transaction-manager="txManager" /> <bean id="personService" class="org.spring.service.impl.PersonServiceBean" /> </beans>
测试类
package org.spring.junit; import java.util.List; import org.junit.BeforeClass; import org.junit.Test; import org.spring.bean.Person; import org.spring.service.PersonService; import org.springframework.context.ApplicationContext; import org.springframework.context.support.ClassPathXmlApplicationContext; public class PersonServiceTest { private static PersonService personService; @BeforeClass public static void setUpBeforeClass() throws Exception { try { ApplicationContext applicationContext = new ClassPathXmlApplicationContext( "spring.xml"); personService = (PersonService) applicationContext .getBean("personService"); } catch (RuntimeException e) { e.printStackTrace(); } } @Test public void testSave() { personService.save(new Person("xxx")); } @Test public void testUpdate() { Person person = personService.getPerson(1); person.setName("zzz"); personService.update(person); } @Test public void testGetPerson() { Person person = personService.getPerson(1); System.out.println(person.getName()); } @Test public void testDelete() { personService.delete(1); } @Test public void testGetPersons() { List<Person> persons = personService.getPersons(); for (Person person : persons) { System.out.println(person.getName()); } } }
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