注解配置事务就很简单了 我们只需要激活@Transactional注解就可以了 然后在需要的事务前面加上@Transactional注解就可以了 我们需要在配置文件中引入tx命名空间
xmlns:tx="http://www.springframework.org/schema/tx" 和 http://www.springframework.org/schema/tx https://www.springframework.org/schema/tx/spring-tx.xsd"
<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 https://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/aop https://www.springframework.org/schema/aop/spring-aop.xsd http://www.springframework.org/schema/context https://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx https://www.springframework.org/schema/tx/spring-tx.xsd"> <context:component-scan base-package="jee.pk3"></context:component-scan> <!-- 引入jdbc.properties --> <context:property-placeholder location="jdbc.properties"/> <!-- 配置dbcp数据库 --> <bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource" destroy-method="close"> <property name="driverClassName" value="${driverClassName}" /> <property name="url" value="${url}" /> <property name="username" value="${uName}" /> <property name="password" value="${password}" /> <property name="initialSize" value="3" /> </bean> <!-- 事务管理器 --> <bean id="txManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager"> <property name="dataSource" ref="dataSource"></property> </bean> <!-- 激活@Transactional注解，始终使用cglib动态代理 --> <tx:annotation-driven proxy-target-class="true"/> </beans>需要事务的类
package jee.pk3; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Component; import org.springframework.transaction.PlatformTransactionManager; import org.springframework.transaction.TransactionStatus; import org.springframework.transaction.annotation.Transactional; import org.springframework.transaction.support.TransactionCallbackWithoutResult; import org.springframework.transaction.support.TransactionTemplate; @Component("userService") public class UserServiceImpl implements UserService { private UserDao userDao; @Autowired public void setUserDao(UserDao userDao) { this.userDao = userDao; } @Override //参数为配置文件中事务管理器的名字，默认使用id=transactionManager 的事务管理器 @Transactional(transactionManager = "txManager")//此方法在事务中执行 public void remove() { userDao.delete(3); if(1==1) { throw new RuntimeException("某个错误"); } userDao.delete(2); } }