Spring事务管理的全解析

<?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: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/tx http://www.springframework.org/schema/tx/spring-tx.xsd" >
<!--    组件扫描-->
    <context:component-scan base-package="com.ali" />
<!--    配置数据源-->
    <bean id="dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        <property name="url" value="jdbc:mysql://localhost:3306/bank"/>
        <property name="username" value="root"/>
        <property name="password" value="123456"/>
        <property name="driverClassName" value="com.mysql.jdbc.Driver"/>
    </bean>
<!--    配置jdbcTemplate-->
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        <property name="dataSource" ref="dataSource"/>
    </bean>
<!--    配置事务管理器-->
    <bean id="transactionManager" class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
        <property name="dataSource" ref="dataSource"/>
    </bean>
<!--    开启事务注解驱动器，开启事务注解，需要加上tx的命名空间-->
    <tx:annotation-driven transaction-manager="transactionManager"/>
</beans>

@Transactional(propagation = Propagation.MANDATORY)

@Transactional(isolation = Isolation.DEFAULT)

@Transactional(timeout = 10)

@Transactional(readOnly = true)

@Transactional(rollbackFor = RuntimeException.class)

@Transactional(noRollbackFor = NullPointerException.class)

@Configuration // 代替xml配置文件
@ComponentScan("com.ali") // 扫描com.ali包下的所有类
@EnableTransactionManagement // 开启事务管理
public class Spring6Config {
    // @Bean注解用于将方法的返回值注册为Spring容器中的一个Bean
    @Bean(name = "druidDataSource")
    public DruidDataSource druidDataSource() {
        DruidDataSource druidDataSource = new DruidDataSource();
        druidDataSource.setUrl("jdbc:mysql://localhost:3306/spring6?useSSL=false&serverTimezone=UTC");
        druidDataSource.setUsername("root");
        druidDataSource.setDriverClassName("com.mysql.jdbc.Driver");
        druidDataSource.setPassword("123456");
        return druidDataSource;
    }
    @Bean(name = "transactionManager")
    public DataSourceTransactionManager transactionManager(DataSource dataSource) {
        DataSourceTransactionManager transactionManager = new DataSourceTransactionManager();
        transactionManager.setDataSource(dataSource);
        return transactionManager;
    }
    @Bean(name = "jdbcTemplate")
    // 该方法的参数DataSource dataSource会自动从Spring容器中找到类型为DataSource的Bean并注入
    public JdbcTemplate jdbcTemplate(DataSource dataSource) {
        JdbcTemplate jdbcTemplate = new JdbcTemplate();
        jdbcTemplate.setDataSource(dataSource);
        return jdbcTemplate;
    }
}