spring声明式事务：配置类代码示例（@EnableTransactionManagement + @Configuration）

﹏ヽ暗。殇╰゛Y 2024-02-18 13:14 10阅读 0赞

##### spring配置类 #####

package com.zxl.tx.demo4;
    
    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.PlatformTransactionManager;
    import org.springframework.transaction.annotation.EnableTransactionManagement;
    import org.springframework.transaction.support.TransactionTemplate;
    
    import javax.sql.DataSource;
    
    @EnableTransactionManagement //@1
    @Configuration
    @ComponentScan
    public class MainConfig4 {
        
        //定义一个数据源
        @Bean
        public DataSource dataSource() {
        
            org.apache.tomcat.jdbc.pool.DataSource dataSource = new org.apache.tomcat.jdbc.pool.DataSource();
            dataSource.setDriverClassName("com.mysql.jdbc.Driver");
            dataSource.setUrl("jdbc:mysql://localhost:3306/javacode2018?characterEncoding=UTF-8");
            dataSource.setUsername("root");
            dataSource.setPassword("root123");
            dataSource.setInitialSize(5);
            return dataSource;
        }
    
        //定义一个JdbcTemplate,用来执行db操作
        @Bean
        public JdbcTemplate jdbcTemplate(DataSource dataSource) {
        
            return new JdbcTemplate(dataSource);
        }
    
        //定义我一个事物管理器
        @Bean //@2
        public PlatformTransactionManager transactionManager(DataSource dataSource) {
         
            return new DataSourceTransactionManager(dataSource);
        }
    }

**@1**：使用@EnableTransactionManagement注解开启spring事务管理

**@2**：定义事务管理器