Spring管理事务方式

Spring管理事务方式
1.JDBC编程事务管理：可以清楚的控制事务的边界，事务控制粒度细化（编程的方式）
2.JDBC声明事务管理：事务相关API不用介入程序之中，将事务管理与实际业务代码解耦（配置XML的方式）

JDBC编程事务管理
    1.实现PlatformTransactionManager接口
Spring配置文件

<!-- Spring编程事务管理配置 -->    <bean id="transactionmanager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource"></property>    </bean> 

Java代码

public static void main(String[] args) {        // TODO Auto-generated method stub        ClassPathXmlApplicationContext cpx = new ClassPathXmlApplicationContext("applicationContext1.xml");        //初始化事务        PlatformTransactionManager ptm = (PlatformTransactionManager) cpx.getBean("transactionmanager");        DefaultTransactionDefinition dtd = new DefaultTransactionDefinition();        dtd.setPropagationBehavior(TransactionDefinition.PROPAGATION_REQUIRED);        TransactionStatus ts = ptm.getTransaction(dtd);        //进行事务        try{            DataSource ds=(DataSource) cpx.getBean("dataSource");            JdbcTemplate jt = new JdbcTemplate(ds);            jt.execute("insert into JDBC_TEST values(4,'张三丰')");            jt.execute("insert into JDBC_TEST values(3,'周芷若')");            ptm.commit(ts);        }catch(Exception e){            ptm.rollback(ts);            e.printStackTrace();        }    } 

  2.使用事务模板Transactiontemplate

public static void main(String[] args) {        // TODO Auto-generated method stub        ClassPathXmlApplicationContext cpx = new ClassPathXmlApplicationContext("applicationContext1.xml");        //第二种使用事务模板Transactiontemplate         PlatformTransactionManager ptm = (PlatformTransactionManager) cpx.getBean("transactionmanager");        TransactionTemplate tt = new TransactionTemplate(ptm);        DataSource ds = (DataSource) cpx.getBean("dataSource");        final JdbcTemplate jt = new JdbcTemplate(ds);                tt.execute(new TransactionCallbackWithoutResult() {                        @Override            protected void doInTransactionWithoutResult(TransactionStatus arg0) {                jt.execute("insert into JDBC_TEST values(4,'张三丰')");                jt.execute("insert into JDBC_TEST values(4,'周芷若')");            }        });    }

JDBC编程事务管理  缺点
浸入代码，改变之后需改动代码，灵活度不够


Spring 声明事务管理
1.设置person.java实体类

public class Person {    private Long id;    private String name;    private int age;        public Long getId() {        return id;    }    public void setId(Long id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    public int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }}

2.设置数据库操作接口
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public interface PersonDao {        public void insert(long id, String name, int age);        public void batchInsert(List persons);}

3.设置接口实现类（模拟循环插入多条数据）

public class PersonDaoImpl implements PersonDao{    private JdbcTemplate jt;        public void setDataSource(DataSource dataSource){        this.jt = new JdbcTemplate(dataSource);    }        @Override    public void insert(long id, String name, int age) {        jt.update("insert into person values('" + id +"'," + name +  "," + age + ")");    }    @Override    public void batchInsert(List persons) {        for(Iterator it = persons.iterator();it.hasNext();){            Person p = (Person) it.next();            insert(p.getId(),p.getName(),p.getAge());        }    }}

4.修改Spring的配置文件

<?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"              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">    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">        <property name="driverClassName">            <value>oracle.jdbc.driver.OracleDriver</value>        </property>        <property name="url">            <value>jdbc:oracle:thin:@localhost:1521:ORCL</value>        </property>        <property name="username">            <value>TEST_USER</value>        </property>        <property name="password">            <value>lixin</value>        </property>    </bean>        <bean id="personDao" class="com.pb.person.Spring.transaction.PersonDaoImpl">        <property name="dataSource" ref="dataSource"></property>    </bean>    <!-- Spring编程事务管理配置 -->    <bean id="transactionmanager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">        <property name="dataSource" ref="dataSource"></property>    </bean><！-- 传统方式-->    <bean id="personDaoProxyBean"        class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">        <property name="proxyInterfaces">            <list>                <!-- 指定代理接口 -->                <value>com.pb.person.Spring.transaction.PersonDao</value>            </list>        </property>        <!-- 指定被代理的bean -->        <property name="target" ref="personDao" />        <!-- 注入事务管理 -->        <property name="transactionManager"  ref="transactionManager"/>        <!-- 事务管理被代理Bean的具体方法以及方式 -->        <property name="transactionAttributes">                                    <props>                <prop key="batch*">PROPAGATION_REQUIRED</prop>            </props>        </property>    </bean></beans> 

5.编写测试类 

public static void main(String[] args) {        ClassPathXmlApplicationContext cpx = new ClassPathXmlApplicationContext("applicationContext.xml");        //必须调用代理Bean        PersonDao personDao = (PersonDao) cpx.getBean("personDaoProxyBean");                Person p1 = new Person();        Person p2 = new Person();        p1.setId(23);        p1.setName("朱雀");        p1.setAge(199);        p2.setId(11);        p2.setName("玄武");        p2.setAge(150);        List persons = new ArrayList();        persons.add(p1);        persons.add(p2);        personDao.batchInsert(persons);    }  

使用XML Schema声明事务管理
1.加入相关的XML命名空间

xmlns="http://www.springframework.org/schema/beans"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns:p="http://www.springframework.org/schema/p"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-2.0.xsdhttp://www.springframework.org/schema/aophttp://www.springframework.org/schema/aop/spring-aop-2.0.xsdhttp://www.springframework.org/schema/txhttp://www.springframework.org/schema/tx/spring-tx-2.0.xsd"

2.将上述配置文件中“传统方式”部分换成

<tx:advice id="txAdvice" transaction-manager="transactionManager"><tx:attributes><tx:method name="batch*" propagation="REQUIRED"/></tx:attributes></tx:advice><aop:config><aop:pointcut id="personDaoPC"expression = "execution(* demo.spring.dao.PersonDAO.*(..))"/>

<aop:advisor advice-ref="txAdvice" pointcut-ref="personDaoPC" /></aop:config>

3.测试类调用Bean时调用
 //必须调用代理Bean
 

       PersonDao personDao = (PersonDao) cpx.getBean("personDao");

就可以了
使用注解声明事务管理
主要使用@Transactionl来标示
1.修改接口的实现类如下（加注解）

@Transactionalpublic class PersonDaoImpl implements PersonDAO {private JdbcTemplate jt;public void setDataSource(DataSource dataSource){jt = new JdbcTemplate(dataSource);}public void insert(long id, String name, int age) {jt.update("insert into person values('" + name +"'," + age +  "," + id + ")");}@Transactional(propagation = Propagation.REQUIRED)public void batchInsert(List persons) {for(Iterator it = persons.iterator();it.hasNext();){Person p = (Person) it.next();insert(p.getId(),p.getName(),p.getAge());}}}

2.修改配置文件

将“传统方式”换成

<tx:annotation-driven transaction-manager="transactionManager"/>