1 public interface UserMapper {
 2 
 3     List<User> selectUser();
 4 
 5     //添加用户
 6     int addUser(User user);
 7 
 8     //删除用户
 9     int deleteUser(int id);
10 }

1 <insert id="addUser" parameterType="user">
2     insert into mybatis.user (id, name, pwd) value (#{id},#{name},#{pwd});
3 </insert>
4 
5 <delete id="deleteUser" parameterType="_int">
6     deletes from mybatis.user where id = #{id};
7 </delete>

 1 public class UserMapperImpl extends SqlSessionDaoSupport implements UserMapper {
 2 
 3 
 4     public List<User> selectUser() {
 5         User user = new User(7,"小明","123456");
 6         UserMapper mapper = getSqlSession().getMapper(UserMapper.class);
 7         mapper.addUser(user);
 8         mapper.deleteUser(7);
 9         return mapper.selectUser();
10     }
11 
12     @Override
13     public int addUser(User user) {
14         return getSqlSession().getMapper(UserMapper.class).addUser(user);
15     }
16 
17     @Override
18     public int deleteUser(int id) {
19         return getSqlSession().getMapper(UserMapper.class).deleteUser(id);
20     }
21 }

 1 <beans xmlns="http://www.springframework.org/schema/beans"
 2        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 3        xmlns:tx="http://www.springframework.org/schema/tx"
 4        xmlns:aop="http://www.springframework.org/schema/aop"
 5        xsi:schemaLocation="http://www.springframework.org/schema/beans
 6         http://www.springframework.org/schema/beans/spring-beans.xsd
 7         http://www.springframework.org/schema/aop
 8         http://www.springframework.org/schema/aop/spring-aop.xsd
 9         http://www.springframework.org/schema/tx
10         http://www.springframework.org/schema/tx/spring-tx.xsd">

 1 <!--4.配置声明式事务
 2         ref：引用我们的数据源
 3     -->
 4     <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
 5         <property name="dataSource" ref="dataSource" />
 6     </bean>
 7 
 8     <!--5.结合AOP切入，保证事务的一致性-->
 9     <!--配置事务通知-->
10     <tx:advice id="txAdvice" transaction-manager="transactionManager">
11         <tx:attributes>
12             <!--配置哪些方法使用什么样的事务,配置事务的传播特性
13                 1.事务的传播特性：多个事务方法相互调用时，事务如何在这些方法间传播
14                 2.read-only="true":只读不可操作数据
15                 3.propagation：用于配置事务的传播特性
16                 4.propagation="REQUIRED"：如果当前没有事务，就新建一个事务，如果已存在一个事务中，加入到这个事务中，这是最常见的选择（默认）。
17             -->
18             <tx:method name="add" propagation="REQUIRED"/>
19             <tx:method name="delete" propagation="REQUIRED"/>
20             <tx:method name="update" propagation="REQUIRED"/>
21             <tx:method name="query" read-only="true"/>
22             <tx:method name="*" propagation="REQUIRED"/>
23         </tx:attributes>
24     </tx:advice>
25 
26     <!--6.配置AOP事务切入
27         配置切点为mapper包下的所有类和方法，用于保证事务的ACID
28     -->
29     <aop:config>
30         <aop:pointcut id="txPointcut" expression="execution(* ustc.wzh.mapper.*.*(..))"/>
31         <aop:advisor advice-ref="txAdvice" pointcut-ref="txPointcut"/>
32     </aop:config>