ssh框架学习

ssh未整合各部分回顾

持久层（数据库）

Hibernate(以图书的信息为例)

public class BookDao{     //DAO(Data Access Object) 数据访问对象是一个面向对象的数据库接口

    public void save(Book book)(

    Configuration cfg = new Configuration().configure();

    //创建SessionFactory

    SessionFactory sf = cfg.buildSessionFactory(); //新版本的创建方式有改动！

    //创建session

    Session session = sf.openSession();

    //创建事件

    Transacion tx = session.beginTransaction();

    session.save(book);

    tx.commit();//事件提交

    session.close();

)

}

业务层

Spring

public class BookService{

    private BookDao bookDao;

    public void setBookDao(BookDao bookDao){

        this.bookDao = bookDao;

    }

    public void save(Book book){

        bookDao.save(book)

    }

}

需要xml配置将BookDao注入BookService

<bean id = "bookDao" class=".....BookDao">

</bean>

<bean id="bookService" class="....BookService">

    <property name="bookDao" ref="bookDao"/>

</bean>

WEB层(没太看懂)

Struts2

public class BookAction extends ActionSupport implements ModDriven<Book>{

    private Book book = new Book();

    public Book getModel(){

        return book;

    }

    public String save(){

        WebApplicationContext wap =  WebApplicationContextUtils.getWebApplicationContext(...);

        BookService bs = wap.getBean("bookService");

        bs.save(book);

    }

}

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