没有事务，虽然 @Transactional 注释是

当我运行以下代码时，我得到输出false：

@Component
public class SomeNumbersMySQLDao {
    //
    public static void main(String[] args) {
        ApplicationContext context = new ClassPathXmlApplicationContext("context.xml");
        SomeNumbersMySQLDao dao = context.getBean("someNumbersMySQLDao", SomeNumbersMySQLDao.class);
        dao.insertAnyNumber();
    }

    @Transactional(propagation = Propagation.REQUIRED) // on default
    public void insertAnyNumber() {
        System.out.println(TransactionSynchronizationManager.isActualTransactionActive());
        //
    }
    //
}

当然，交易是行不通的。required当我从带有事务的方法调用带有事务的方法never并且没有收到错误时，我理解了这一点。

内容物context.xml（SomeNumbersMySQLDao包含在包装中BP）：

<?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:util="http://www.springframework.org/schema/util"
       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">

    <context:component-scan base-package="BP"/>

    <bean id="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
        <property name="driverClassName" value="com.mysql.cj.jdbc.Driver"/>
        <property name="url" value="jdbc:mysql://localhost:3306/springjdbc?serverTimezone=UTC"/>
        <property name="username" value="root"/>
        <property name="password" value="1234"/>
    </bean>
</beans>