hibernate3.0+ejb3 annotaion配置实战+spring1.21 annotation事务控制

hibernate3.0+ejb3 annotaion配置实战+spring1.21 annotation事务控制
原文地址：http://www.cnblogs.com/steeven/archive/2005/06/14/174410.html

我是比较讨厌xml的人，没有强类型，很多配置出错，包括xdoclet都无法检查。刚好现在的主流框架总算开始支持annotation了，所以玩了一下配置，供参考：
hibernate3.05
hibernate-annotations-3.0beta2
spring1.21

几个配置文件如下：
spring-database.xml(这个文件基本不变，有新的dao在底下加入一行即可。
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

    <!-- ========================= RESOURCE DEFINITIONS ========================= -->

    <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
        <property name="driverClassName"><value>${jdbc.driverClassName}</value></property>
        <property name="url"><value>${jdbc.url}</value></property>
        <property name="username"><value>${jdbc.username}</value></property>
        <property name="password"><value>${jdbc.password}</value></property>
    </bean>

    <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
        <property name="configurationClass"><value>org.hibernate.cfg.AnnotationConfiguration</value></property>
           <property name="dataSource"><ref bean="dataSource"/></property>
           <property name="configLocation"><value>/hibernate.cfg.xml</value></property>
   </bean>

    <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
           <property name="sessionFactory"><ref bean="sessionFactory"/></property>
           <property name="dataSource"><ref bean="dataSource"/></property>
    </bean>

    <bean class="org.springframework.aop.framework.autoproxy.DefaultAdvisorAutoProxyCreator"/>

    <bean class="org.springframework.transaction.interceptor.TransactionAttributeSourceAdvisor">
        <property name="transactionInterceptor"><ref bean="transactionInterceptor"/></property>
    </bean>

    <bean id="transactionInterceptor" class="org.springframework.transaction.interceptor.TransactionInterceptor">
        <property name="transactionManager"><ref bean="transactionManager"/></property>
        <property name="transactionAttributeSource">
            <bean class="org.springframework.transaction.annotation.AnnotationTransactionAttributeSource"/>
        </property>
    </bean>

    <!-- ========================= DAO DEFINITIONS ========================= -->

    <bean id="testDao" class="org.steeven.TestDaoImpl">
         <property name="sessionFactory">
            <ref bean="sessionFactory"/>
        </property>
    </bean>

    <!-- ========================= DAO DEFINITIONS ========================= -->
     <bean id="mitService" class="org.steeven.TestServiceImpl"></bean>
</beans>

hibernate.cfg.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
        "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
        "http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
    <session-factory>
        <property name="hibernate.hbm2ddl.auto">create-drop</property>
        <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
        <property name="hibernate.cglib.use_reflection_optimizer">true</property>
        <property name="default-lazy">false</property>
       
        <!-- 用于hibernate持久化的对象" -->
        <mapping class="org.steeven.Test"/>
       
          <listener type="pre-update" class="org.hibernate.validator.event.ValidatePreUpdateEventListener"/>
          <listener type="pre-insert" class="org.hibernate.validator.event.ValidatePreInsertEventListener"/>
    </session-factory>
</hibernate-configuration>

上面两个就是配置文件的全部了。下面看看代码：
TestDao.java(注意，就是个普通的dao，事务控制由调用者标注）
public class TestDaoImpl extends HibernateDaoSupport implements TestDao {
    public void save(Test data) {
        getHibernateTemplate().saveOrUpdateAll(Arrays.asList(data));
    }
}
Test.java
@Entity
@Proxy(lazy = false)
public class Test {
    int id;
    String name;
    Map<String, String> properties;
    @Column(length = 100)
    public String getName() {
        return name;
    }
    public void setName(String name) {
        this.name = name;
    }

    @Id(generate = GeneratorType.AUTO)
    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    @Transient
    public String getNotStoredProp() {
        return null;
    }


    @Type(type = "org.steeven.database.MapUserType")
    @Column(name = "properties", length = 1000)
        //Map暂时不被支持，自己持久化到一个大字段
    public Map<String, String> getProperties() {
        return properties;
    }

    public void setProperties(Map<String, String> properties) {
        this.properties = properties;
    }
}

TestServiceImpl.java（这个类也是从spring中取得，关键就在@Transactional标记）
@Transactional
public class TestServiceImpl implements TestService {
    public void save(Test data) {
        TestDao dao = (TestDao)ServiceLocator.getInstance().getBean("testDao");
        dao.save(data[0]);
        if (true) throw new RuntimeException(); //看看数据库是不是什么都没有？！
        dao.save(data[1]);
    }
}

现在很清爽了，所有的事务控制只需要加几个@Transaction标记。感谢hibernate+spring
另外，hibernate还提供了基于标记的参数校验，请参考下面文档：

参考资源：
spring1.21自带smaples/jpetstore
http://www.hibernate.org/hib_docs/annotations/reference/en/html_single/