Spring事务和JDBCTemplate(全注解)_java注解事务能操作普通jdbc吗

类一(user_dao):

public interface user_dao {
    public void addmoney();
    public void reducemoney();
    public void query();
}

类二(user_dao_impl):

@Repository
public class user_dao_impl implements user_dao {
    @Autowired
private JdbcTemplate jdbcTemplate;
    @Override
    public void addmoney() {
        int  a = jdbcTemplate.update("update users1 set money = money-100 where uname=?", "张三");
        System.out.println(a);
    }
 
    @Override
    public void reducemoney() {
        int i = jdbcTemplate.update("update users1 set money = money+100 where uname=?", "李四");
        System.out.println(i);
    }
 
    @Override
    public void query() {
        List<user> query = jdbcTemplate.query("select * from users1", new BeanPropertyRowMapper<>(user.class));
        System.out.println(query);
    }
}

类三(pojo.user)

public class user {
    private String uname;
    private Double money;
 
    public user(String uname, Double money) {
        this.uname = uname;
        this.money = money;
    }
 
    public user() {
    }
 
    public String getUname() {
        return uname;
    }
 
    public void setUname(String uname) {
        this.uname = uname;
    }
 
    public Double getMoney() {
        return money;
    }
 
    public void setMoney(Double money) {
        this.money = money;
    }
 
    @Override
    public String toString() {
        return "user{" +
                "uname='" + uname + '\'' +
                ", money=" + money +
                '}';
    }
}

类四(UserService)

@org.springframework.stereotype.Service
@Transactional(readOnly = false)
public class UserService {
    @Autowired
    private user_dao_impl user_dao_impl;
    public void testMoney(){
        user_dao_impl.addmoney();
        user_dao_impl.reducemoney();
        user_dao_impl.query();
    }
}

配置类(模拟XML文件):

@Configuration
@ComponentScan(basePackages = "com")
@EnableTransactionManagement
public class DoConfig {
@Bean
    public DruidDataSource getDataSource(){
    DruidDataSource druidDataSource = new DruidDataSource();
    druidDataSource.setUsername("root");
    druidDataSource.setUrl("jdbc:mysql:///users?useUnicode=true&characterEncoding=utf-8");
    druidDataSource.setDriverClassName("com.mysql.jdbc.Driver");
    druidDataSource.setPassword("123456");
    return druidDataSource;
}
@Bean
    public JdbcTemplate getJdbcTemplate(DruidDataSource druidDataSource){
       JdbcTemplate jdbcTemplate = new JdbcTemplate();
       jdbcTemplate.setDataSource(druidDataSource);
       return jdbcTemplate;
    }
    @Bean
    public DataSourceTransactionManager getTransactional(DruidDataSource druidDataSource){
        DataSourceTransactionManager dataSourceTransactionManager = new DataSourceTransactionManager();
        dataSourceTransactionManager.setDataSource(druidDataSource);
        return dataSourceTransactionManager;
    }
}

测试类:

public class Test01 {
    @Test
    public void test01(){
        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(DoConfig.class);
        UserService userService = applicationContext.getBean("userService", UserService.class);
        userService.testMoney();
    }
}

总结Spring中常见的注释:

@Component
@Service     一般用在Service层
@Controller   一般用在Web层
@Repository    一般用在Dao层
@Transactional  开启事务一般用在Service层
@Configuration  通常用于全注解开发时写xml文件的类

@ComponentScan 组件扫描

事务的4大特性：

(1).原子性:两个的操作要么都成功,要么都失败.
(2).一致性:在操作中总数保持不变
(3).隔离性:多个人去操作数据,不会受其影响
(4).持久性:操作后数据会同步更新到数据库中