deleteorder.java

用java+Ajax做的图书商城

package shoppcart;

import java.io.IOException;
import java.io.PrintWriter;

import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;

import javax.servlet.*;
import javax.servlet.http.*;

public class DeleteOrder extends HttpServlet {
    private static final String CONTENT_TYPE = "text/html; charset=UTF-8";

    public void init(ServletConfig config) throws ServletException {
        super.init(config);
    }

    public void doGet(HttpServletRequest request, 
                      HttpServletResponse response) throws ServletException, IOException {
        response.setContentType(CONTENT_TYPE);
        PrintWriter out = response.getWriter();
        
        String id=request.getParameter("id");
        HttpSession session=request.getSession(true);
        ArrayList<Product> list=(ArrayList<Product>)session.getAttribute("list");
        Product product=null;
        for(int i=0;i<list.size();i++){
           product=list.get(i);
            if(id.equals(product.getID())){
                list.remove(i);
            }
        }
        session.setAttribute("list",list);
        out.print(product.getID());
        out.close();
    }
}