基于注解声明事务

package com.atguigu.spring6.tx.config;


import com.alibaba.druid.pool.DruidDataSource;
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//配置类
@ComponentScan("com.atguigu.spring6.tx")
@EnableTransactionManagement//开启事务
public class SpringConfig {
    @Bean
    public DataSource getDateSource(){
        //数据源
        DruidDataSource dataSource=new DruidDataSource();
        dataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");
        dataSource.setUsername("root");
        dataSource.setPassword("zhbx2020");
        dataSource.setUrl("jdbc:mysql://localhost:3306/spring?characterEncoding=utf8&useSSL=false");
        return dataSource;
    }

    @Bean(name = "jdbcTemplate")
    //JdbcTemplate对象
    public  JdbcTemplate getJdbcTemplate(DataSource dataSource){
        JdbcTemplate jdbcTemplate=new JdbcTemplate();
        jdbcTemplate.setDataSource(dataSource);
        return jdbcTemplate;
    }

    @Bean
    public DataSourceTransactionManager getDataSourceTransactionManager(DataSource dataSource){
        //事务管理器
        DataSourceTransactionManager dataSourceTransactionManager=new DataSourceTransactionManager();
        dataSourceTransactionManager.setDataSource(dataSource);
        return dataSourceTransactionManager;
    }

}