```java
@Repository
public class UserDaoImpl implements UserDao {
@Autowired
private JdbcTemplate jdbcTemplate;
}
@Repository
public class UserDaoImpl implements UserDao {
@Autowired
private JdbcTemplate jdbcTemplate;
//lucy转账100给mary
//多钱
@Override
public void addMoney() {
String sql = "update t_account set money=money-? where username=?";
jdbcTemplate.update(sql,100,"lucy");
}
//少钱
@Override
public void reduceMoney() {
String sql = "update t_account set money=money+? where username=?";
jdbcTemplate.update(sql,100,"mary");
}
}
@Service
public class UserService {
//注入Dao
@Autowired
private UserDao userDao;
//转账的方法
public void accountMoney(){
//lucy少100
userDao.reduceMoney();
//mary多100
userDao.addMoney();
}
}
//lucy少100
userDao.reduceMoney();
//模拟一场
int i =10/0;
//mary多100
userDao.addMoney();
<!--创建事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<?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.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--开启事务注解-->
<tx:annotation-driven transaction-manager="transactionManager"></tx:annotation-driven>
@Service
@Transactional
public class UserService {
当一个事务方法被另外一个事务方法调用时候,这个事务方法如何进行
事务的传播行为可以由传播属性指定。Spring 定义了 7 种类传播行为。
@Service
@Transactional (propagation = Propagation.REOUIRED)
public class UserService{
@Service
@Transactional (propagation = Propagation.REOUIRED isolation = Isolation.REPEATABLE_READ)
public class UserService{
复制代码
<!--1 创建事务管理器-->
<bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
<!--注入数据源-->
<property name="dataSource" ref="dataSource"/>
</bean>
<!--2 配置通知-->
<tx:advice id="txadvice">
<!--配置事务参数-->
<tx:attributes>
<!--指定哪种规则的方法上面添加事务-->
<tx:method name="accountMoney" propagation="REQUIRED"/>
<!--<tx:method name="account*"/>-->
</tx:attributes>
</tx:advice>
<!--配置切入点和切面-->
<aop:config>
<!--配置切入点-->
<aop:pointcut id="pt" expression="execution(* com.gbx.spring5.service.UserService.*(..))"/>
<!--配置切面-->
<aop:advisor advice-ref="txadvice" pointcut-ref="pt"/>
</aop:config>
@Configuration
@ComponentScan(basePackages = "com.gbx")
@EnableTransactionManagement
public class TXConfig {
//创建数据库连接池
@Bean
public DruidDataSource getDruidDataSource(){
DruidDataSource dataSource = new DruidDataSource();
dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
dataSource.setUrl("jdbc:mysql:///db02?serverTimezone=UTC");
dataSource.setUsername("root");
dataSource.setPassword("123456");
return dataSource;
}
//创建JdbcTemplate对象
@Bean
public JdbcTemplate getJdbcTemplate(DataSource dataSource){
JdbcTemplate jdbcTemplate = new JdbcTemplate();
//注入dataSource
jdbcTemplate.setDataSource(dataSource);
return jdbcTemplate;
}
//创建事务管理器
@Bean
public DataSourceTransactionManager getDataSourceTransactionManager(DataSource dataSource){
DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
dataSourceTransactionManager.setDataSource(dataSource);
return dataSourceTransactionManager;
}
}
@Test
public void testAccount2(){
ApplicationContext context =
new AnnotationConfigApplicationContext(TXConfig.class);
UserService userService = context.getBean("userService", UserService.class);
userService.accountMoney();
}