addbasketcontroller.java

本系统为一个在线图书馆系统

import java.io.*; 
import javax.servlet.*;
import javax.servlet.http.*;
import library.LibraryBasket;

/**
 * a servlet that takes input from ShowBooks.jsp
 * and adds the selected book to a user's basket.
 * 
 * @author Class 3 ,Software
 * @version 1.0
 */
public class AddBasketController extends HttpServlet
{

	private static final long serialVersionUID = 1L;
	LibraryBasket basket = new LibraryBasket();
	public void doPost(HttpServletRequest request,
			           HttpServletResponse response)throws ServletException 
    {
		String[] IsbnAddBasket = request.getParameterValues("checkbox"); 
		for ( int i = 0; IsbnAddBasket != null && i < IsbnAddBasket.length;i++)
		{  
		   String IsbnTmp = IsbnAddBasket[i];		    
		   basket.addItem(IsbnTmp);
		}
	    try
		{
		    request.getSession(true).setAttribute("basket", basket);
			getServletContext().getRequestDispatcher("/viewbasket.jsp").forward(request, response);
		}
		catch (IOException e)
		{
		    e.printStackTrace();
		}

     }	
}