36、声明式事务-环境搭建

1、导入相关依赖

数据源、数据库驱动、Spring jdbc模块

  • 注意：mysql的驱动要和mysql版本对应哦。
 <dependency>
    <groupId>org.springframework</groupId>
        <artifactId>spring-jdbc</artifactId>
    <version>${spring.version}</version>
</dependency>
<!-- https://mvnrepository.com/artifact/com.mchange/c3p0 -->
<dependency>
    <groupId>com.mchange</groupId>
    <artifactId>c3p0</artifactId>
    <version>0.9.5.2</version>
</dependency>
<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.34</version>
</dependency>

2、TXConfig

@Configuration
@ComponentScan("com.hw.springannotation.tx")
public class TxConfig {

    @Bean
    public DataSource dataSource() throws PropertyVetoException {
        ComboPooledDataSource dataSource = new ComboPooledDataSource();
        dataSource.setUser("root");
        dataSource.setPassword("root");
        dataSource.setDriverClass("com.mysql.jdbc.Driver");
        dataSource.setJdbcUrl("jdbc:mysql://localhost:3306/test");
        return dataSource;
    }

    @Bean
    public JdbcTemplate jdbcTemplate(DataSource dataSource) {
        return new JdbcTemplate(dataSource);
    }

}

3、UserService

@Service
public class UserService {
    @Autowired
    private UserDao userDao;

    public void insertUser() {
        userDao.insert();
        System.out.println("插入完成...");
        int a = 100 / 0;
    }
}

4、UserDao

@Repository
public class UserDao {

    @Autowired
    private JdbcTemplate jdbcTemplate;

    public void insert() {
        String sql = "insert into tbl_user(username,age) values(?,?)";
        jdbcTemplate.update(sql, UUID.randomUUID().toString().substring(5, 10), 14);
    }
}

5、测试用例

public class Test_TX {

    @Test
    public void test() {
        AnnotationConfigApplicationContext applicationContext = new AnnotationConfigApplicationContext(TxConfig.class);
        UserService userService = applicationContext.getBean(UserService.class);
        userService.insertUser();
    }

}
  • 不设置事物的情况下，能够成功插入数据，而且抛出异常