spring的bean管理（注解和配置文件混合使用）

Posted 2020-10-29 xiaoxiaoの

1.建三个类，在一个类中引用其他两个类

import javax.annotation.Resource;
import org.springframework.beans.factory.annotation.Autowired;

public class BookService {
    @Resource(name="bookDao")
    private BookDao bookDao;
    @Autowired
    private OrdersDao ordersDao;
    
  public void add(){
      System.out.println("BookService-------");
      bookDao.add1();
      ordersDao.add2();
  }
}

public class BookDao {
   public void add1(){
       System.out.println("BookDao--------");
   }
}

public class OrdersDao {
  public void add2(){
      System.out.println("OrdersDao-------");
  }
}

2.xml文件配置

<context:component-scan base-package="com.example"></context:component-scan>

<bean id="bookDao" class="com.example.spring.BookDao"></bean>
<bean id="ordersDao" class="com.example.spring.OrdersDao"></bean>
<bean id="bookService" class="com.example.spring.BookService"></bean>