spring中的bean使用注解创建，applicationContext.xml中需要写的内容，以及dao,service实现类上面写的注解

2023-09-07

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.xsd
        http://www.springframework.org/schema/context
       http://www.springframework.org/schema/context/spring-context.xsd">

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

</beans>

BookDaoImpl简单测试示例

@Repository("bookDao")
public class BookDaoImpl implements BookDao {
    @Override
    public void save() {
        System.out.println("BookDaoImpl save");
    }
}

BookServiceImpl简单测试示例

@Service("bookService")
public class BookServiceImpl implements BookService {

    private BookDao bookDao;

    public void setBookDao(BookDao bookDao) {
        this.bookDao = bookDao;
    }

    @Override
    public void save() {
        System.out.println("BookServiceImpl save");
    }
}