bookdb.java

用jsp编写的一个简单的网上书店系统,数据库用的mysql

package database;

import exception.*;
import java.util.List;
import cart.*;


public class BookDB {
    private String bookId = "0";
    private BookDBAO database = null;
    
    /*
     * 初始化BookDBAO类型的成员变量database 
     */    
    public BookDB() {
    	try{
        	this.database = new BookDBAO();
        }catch (Exception e) {
            System.err.println(e);
        }
    }

    public void setBookId(String bookId) {
        this.bookId = bookId;
    }

    public void setDatabase(BookDBAO database) {
        
        this.database = database;
       
    }

    public BookDetails getBookDetails() throws BookNotFoundException {
        return (BookDetails) database.getBookDetails(bookId);
    }

    public List getBooks() throws BooksNotFoundException {
        return database.getBooks();
    }

    public void buyBooks(ShoppingCart cart) throws OrderException {
        database.buyBooks(cart);
    }
}