Spring集成JDBC

配置阿里巴巴提供的数据库连接类，让Spring帮忙管理

"classpath:config.properties">
    "dataSource" class="com.alibaba.druid.pool.DruidDataSource">
        "driverClassName" value="${driverClassName}">
        "url" value="${url}">
        "username" value="${uname}">
        "password" value="${upassword}">
        "initialSize" value="${initialSize}">
        "maxActive" value="${maxActive}">
        "maxWait" value="${maxWait}">
    
    "jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
        "dataSource" ref="dataSource">
    

JdbcTemplate是Spring对jdbc的封装，提供了对数据库操作的方法，里面还可以直接包含数据源对象。

@Data
@Repository
public class UserDao {
    @Autowired
    JdbcTemplate jdbcTemplate;
    Integer id;
    String name;
 
    public void select(){
        jdbcTemplate.update("insert into user(name)value (?)","aaa");
    }
}

@Data
@Service("userService")
public class UserService {
    @Resource
    UserDao userDao;
    public void select(){
        userDao.select();
    }
}

public class test {
    public static void main(String[] args) {
        ApplicationContext applicationContext=new ClassPathXmlApplicationContext("spring.xml");//读取配置文件
        UserService userService=applicationContext.getBean("userService",UserService.class);
        userService.select();
    }
}