一、创建事务、数据源相关的配置类：

package cn.edu.tju.study.service.transaction;import com.zaxxer.hikari.HikariDataSource;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.jdbc.datasource.DataSourceTransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;import javax.sql.DataSource;@Configuration
public class TransactionConfig {@Beanpublic DataSource getDataSource() {HikariDataSource dataSource = new HikariDataSource();dataSource.setJdbcUrl("jdbc:mysql://xxx.xxx.xxx.xxx/test");dataSource.setUsername("root");dataSource.setPassword("MyPa");dataSource.setDriverClassName("com.mysql.jdbc.Driver");return dataSource;}@Beanpublic DataSourceTransactionManager getDataSourceTransactionManager(DataSource dataSource) {DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();dataSourceTransactionManager.setDataSource(dataSource);return dataSourceTransactionManager;}@Bean(name = "jdbcTemplate")public JdbcTemplate getJdbcTemplate(DataSource dataSource) {JdbcTemplate jdbcTemplate = new JdbcTemplate();jdbcTemplate.setDataSource(dataSource);return jdbcTemplate;}}

二、创建主配置类

package cn.edu.tju.study.service.transaction;import org.springframework.context.annotation.ComponentScan;
import org.springframework.context.annotation.Configuration;
import org.springframework.transaction.annotation.EnableTransactionManagement;@Configuration
@EnableTransactionManagement
@ComponentScan("cn.edu.tju.study.service.transaction")
public class SpringConfig {
}

三、定义service

package cn.edu.tju.study.service.transaction;import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;@Service
public class TransactionService {@Autowiredprivate JdbcTemplate jdbcTemplate;@Transactionalpublic void insertData(){jdbcTemplate.execute("insert into xx values(4,5)");int t = 1/0;jdbcTemplate.execute("insert into xx values(24,35)");}
}

四、定义主类，并调用service

package cn.edu.tju.study.service.transaction;import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;public class TransactionTest {public static void main(String[] args) {ApplicationContext applicationContext = new AnnotationConfigApplicationContext(SpringConfig.class);TransactionService transactionService = applicationContext.getBean("transactionService", TransactionService.class);transactionService.insertData();}
}

五、可以分别去掉和加上service类中的@Transactional注解，看运行效果。
分别是insert into xx values(4,5)的操作被保留或被回滚（也就是事务生效）