全注解实现事务管理，就是取消 spring-config.xml 文件，而将配置信息在配置类中实现。

配置类：

package com.spring.book;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.TransactionManager;
import org.springframework.transaction.annotation.EnableTransactionManagement;@Configuration
@ComponentScan(value = "com.spring.book")
@EnableTransactionManagement
public class SpringConfig {@Beanpublic DruidDataSource getDruidDataSource() {DruidDataSource druidDataSource = new DruidDataSource();druidDataSource.setDriverClassName("com.mysql.cj.jdbc.Driver");druidDataSource.setUrl("jdbc:mysql://localhost:3306/test?characterEncoding=utf8&useSSL=false");druidDataSource.setUsername("root");druidDataSource.setPassword("374296");return druidDataSource;}@Beanpublic JdbcTemplate getJdbcTemplate() {return new JdbcTemplate(getDruidDataSource());}@Beanpublic TransactionManager getTransactionManager() {return new DataSourceTransactionManager(getDruidDataSource());}
}

测试类：

import com.spring.book.BookController;
import com.spring.book.SpringConfig;
import org.junit.jupiter.api.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;public class TxByAnnotationTest {@Testpublic void testBuyBook() throws InterruptedException {ApplicationContext context = new AnnotationConfigApplicationContext(SpringConfig.class);BookController bookController = context.getBean("bookController", BookController.class);bookController.buyBook(1,1);}
}