clearshopcartservlet.java

来自「基于jsp的网上书店」· Java 代码 · 共 37 行

package  shop;

import java.io.IOException;
import java.util.Vector;

import javax.servlet.ServletConfig;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;


public final class ClearShopCartServlet extends  HttpServlet{  

	public ClearShopCartServlet(){
		super();
	}
	
	public void init(ServletConfig config)throws ServletException{
		super.init(config);
	}
	
	public void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {      
		
			
        HttpSession session = req.getSession();
						
   		Vector shopCartList=(Vector)session.getAttribute(Constants.SHOPCART_KEY);
       	if(shopCartList!=null){
			shopCartList.clear();
			session.setAttribute(Constants.SHOPCART_KEY,shopCartList);
       	}
	   	resp.sendRedirect("basket_OK.jsp");					
 	}
 	
}