clearbasketcontroller.java

来自「java实现的小型购物平台,虽然简单」· Java 代码 · 共 49 行

package  LL;
import  LL.LibraryBasket;

import javax.servlet.RequestDispatcher;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

public class ClearBasketController extends HttpServlet{


public void doPost(HttpServletRequest request,HttpServletResponse response){
	
	try {HttpSession mySession=request.getSession();
	
	/**Load the myBasket bean from the HtttpSession.
	 *This returns a copy of the object in the session
	 */
	LibraryBasket myBasket=(LibraryBasket) mySession.getAttribute("myBasket");
	
	
	/**
	 * process the requst from the jsp to clear the basket
	 */
         
	  myBasket=new LibraryBasket();
	
	/**
	 *  Set the bean back into the session for later use. This
	 * method will associate the myBasket bean with the name "myBasket"
	 */
	mySession.setAttribute("myBasket",myBasket);
	
	/**
	 * back to the main page
	 */
	
	RequestDispatcher rd;
	rd=getServletContext().getRequestDispatcher("/viewbasket.jsp");
	rd.forward(request, response);
	
	}catch(Exception e){
	  System.out.println(e.toString());
	}
}
}