spring_note 注脚注入属性

spring_note 注解注入属性
一、spring注释注入属性
package:com.spring.service
public class AccountService {
    @Resource // 按类型匹配
    @Resource(name="accountDAOImpl") // 到配置文件中查找对应id的类
    @Autowired //自动装配
    @Qualifier("accountDAOImpl") //根据autowired来自动装配 查找在配置文件中对应的id的类
    private IAccountDAO dao;

    public IAccountDAO getDao() {
        return dao;
    }

    public void setDao(IAccountDAO dao) {
        this.dao = dao;
    }
}

package:com.spring.dao
public interface IAccountDAO {
      void select();
}
   
package:com.spring.dao.impl
public class AccountDAOImpl mplements IAccountDAO{
    public void select() {
        System.out.println("select account ........");
    }
}
  
applicationContext.xml
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"         xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd">
    <!-- 该命名空间对注释驱动、属性文件引入、加载期织入等功能提供了便捷的配置。但注意它仅提供元数据信息。要使元数据信息真正起作用，必须让负责处理这些元数 据的处理器工作起来。 -->
    <context:annotation-config />
        <bean id="accountService" class="com.spring.dao.impl.AccountDAOImpl"></bean>
    </beans>

package:com.spring.junit
public class AccountTest {
    private AccountService service;

    @Before
    public void before(){
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        service = (AccountService) ctx.getBean("accountService");
    }

    @Test
    public void testFooService(){
        service.getDao().select();
    }

    @After
    public void after(){
        service = null;
    }
}