spring注解版声明式事务

相对于xml版来说，声明式事务的注解版更得我心。

  1. 用jdbc操作数据库举例，在导入了aop和spring依赖以外，导入sping-jdbc依赖，先创建配置类TxConfig,在类中注册了三个bean
    dataSource
    jdbcTemplate
    platformTransactionManager
    还有@EnableTransactionManagement//开启基于注解的事务管理功能  千万不能忘记！

     1 package crm.mytest.tc;
 2 
 3 import com.mchange.v2.c3p0.ComboPooledDataSource;
 4 import org.springframework.context.annotation.Bean;
 5 import org.springframework.context.annotation.ComponentScan;
 6 import org.springframework.context.annotation.Configuration;
 7 import org.springframework.jdbc.core.JdbcTemplate;
 8 import org.springframework.jdbc.datasource.DataSourceTransactionManager;
 9 import org.springframework.transaction.PlatformTransactionManager;
10 import org.springframework.transaction.annotation.EnableTransactionManagement;
11 
12 import javax.sql.DataSource;
13 import java.beans.PropertyVetoException;
14 @EnableTransactionManagement//开启基于注解的事务管理功能，重要！！！
15 @Configuration
16 @ComponentScan("crm.mytest.tc")
17 public class TxConfig {
18     /**
19      * DataSource
20      * @return
21      * @throws PropertyVetoException
22      */
23     @Bean
24     public DataSource dataSource() throws PropertyVetoException {
25         ComboPooledDataSource dataSource = new ComboPooledDataSource();
26         dataSource.setUser("root");
27         dataSource.setPassword("123");
28         dataSource.setDriverClass("com.mysql.jdbc.Driver");
29         dataSource.setJdbcUrl("jdbc:mysql:///crm");
30         return dataSource;
31     }
32     @Bean
33     public JdbcTemplate jdbcTemplate(DataSource dataSource){
34         JdbcTemplate jdbcTemplate = new JdbcTemplate(dataSource);
35         return jdbcTemplate;
36     }
37     //注册事务管理器在容器中，重要！！！
38     @Bean
39     public PlatformTransactionManager platformTransactionManager() throws PropertyVetoException {
40 return new DataSourceTransactionManager(dataSource());//放入数据源
41     }
42 }
  2. 简略的创建一个UserDao和UserService，模拟一下开发的mvc模式，这里就先不用接口了
     1 package crm.mytest.tc;
 2 
 3 import org.springframework.beans.factory.annotation.Autowired;
 4 import org.springframework.jdbc.core.JdbcTemplate;
 5 import org.springframework.stereotype.Repository;
 6 
 7 @Repository
 8 public class UserDao {
 9     
10     @Autowired
11     private JdbcTemplate jdbcTemplate;
12 
13     public void insert(){
14         String sql="insert into test values(?,?,?)";
15          jdbcTemplate.update(sql, null, "liweijun",1);
16     }
17 }
     1 package crm.mytest.tc;
 2 
 3 import org.springframework.beans.factory.annotation.Autowired;
 4 import org.springframework.stereotype.Service;
 5 import org.springframework.transaction.annotation.Transactional;
 6 
 7 @Service
 8 public class UserService {
 9     @Autowired
10     private UserDao userDao;
11 
12     @Transactional
13     public void insert(){
14         userDao.insert();
15         System.out.println("插入完成");
16       //  int i=1/0;
17     }
18 }
  3. 最后是测试类 
     1 package crm.mytest.tc;
 2 
 3 import org.junit.Test;
 4 import org.junit.runner.RunWith;
 5 import org.springframework.beans.factory.annotation.Autowired;
 6 import org.springframework.test.context.ContextConfiguration;
 7 import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
 8 
 9 @RunWith(SpringJUnit4ClassRunner.class)
10 @ContextConfiguration(classes = crm.mytest.tc.TxConfig.class)
11 public class Demo {
12     @Autowired
13     private UserService userService;
14     @Test
15     public void demo1(){
16         userService.insert();
17     }
18 }

    总结：这简单吧？可以自行造出异常测试一下

posted @ 2018-06-23 19:48  AnyProgrammer  阅读(1264)  评论(1)  编辑  收藏  举报