spring事务处理的几种方式

一、声明式事务

1、使用配置文件

建立一个事务性的服务接口

package x.y.service;public interface FooService {  Foo getFoo(String fooName);  Foo getFoo(String fooName, String barName);  void insertFoo(Foo foo);  void updateFoo(Foo foo);}

实现上诉接口

package x.y.service;public class DefaultFooService implements FooService {  public Foo getFoo(String fooName) {    throw new UnsupportedOperationException();  }  public Foo getFoo(String fooName, String barName) {    throw new UnsupportedOperationException();  }  public void insertFoo(Foo foo) {    //嵌入数据库语句    throw new UnsupportedOperationException();  }  public void updateFoo(Foo foo) {    //嵌入数据库语句    throw new UnsupportedOperationException();  }}

添加配置文件代码

<!-- from the file 'context.xml' --><?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: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/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd     http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd">    <!-- this is the service object that we want to make transactional -->  <bean id="fooService" class="x.y.service.DefaultFooService"/>  <!-- the transactional advice (what 'happens'; see the <aop:advisor/> bean below) -->  <tx:advice id="txAdvice" transaction-manager="txManager">  <!-- the transactional semantics... -->  <tx:attributes>    <!-- all methods starting with 'get' are read-only -->    <tx:method name="get*" read-only="true"/>    <!-- other methods use the default transaction settings (see below) -->    <tx:method name="*"/>  </tx:attributes>  </tx:advice>    <!-- ensure that the above transactional advice runs for any execution    of an operation defined by the FooService interface -->  <aop:config>  <aop:pointcut id="fooServiceOperation" expression="execution(* x.y.service.FooService.*(..))"/>  <aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceOperation"/>  </aop:config>    <!-- don't forget the DataSource -->  <bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">  <property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"/>  <property name="url" value="jdbc:oracle:thin:@rj-t42:1521:elvis"/>  <property name="username" value="scott"/>  <property name="password" value="tiger"/>  </bean>  <!-- similarly, don't forget the PlatformTransactionManager -->  <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">  <property name="dataSource" ref="dataSource"/>  </bean>    <!-- other <bean/> definitions here --></beans>

上述文件具体解析，详见 Spring2.5-reference.chm手册

注意：在这里要阐明我说的问题，通常我们的service配置文件和dao的配置文件不在同一个目录中，如果，把下面的配置

<tx:advice id="txAdvice" transaction-manager="txManager">  <!-- the transactional semantics... -->  <tx:attributes>    <!-- all methods starting with 'get' are read-only -->    <tx:method name="get*" read-only="true"/>    <!-- other methods use the default transaction settings (see below) -->    <tx:method name="*"/>  </tx:attributes>  </tx:advice>    <!-- ensure that the above transactional advice runs for any execution    of an operation defined by the FooService interface -->  <aop:config>  <aop:pointcut id="fooServiceOperation" expression="execution(* x.y.service.FooService.*(..))"/>  <aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceOperation"/>  </aop:config>

放到dao的配置文件中，那么这个事务处理是不起作用的，需要将这个配置放到service的配置文件中去。

2、基于注解的事务管理

在需要事务的类或者方法上加入如下注解

@Transactional(propagation=Propagation.REQUIRED, rollbackFor=DAOException.class) 

同时在配置文件中声明

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

同样上面配置也要加在service所在的配置文件中。