addorderlineservlet.java

来自「网上书城源代码~~在学习JAVA的时候做的」· Java 代码 · 共 48 行

package com.briup.servlet;

import java.io.IOException;
import java.util.Map;

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

import com.briup.bean.Book;
import com.briup.bean.Orderline;
import com.briup.bean.ShoppingCart;


@SuppressWarnings("serial")
public class AddOrderlineServlet extends HttpServlet {
	public void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doPost(request,response);
	}

	@SuppressWarnings("unchecked")
	public void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		//Long bookid=new Long(request.getParameter("bookid"));
		String num1=request.getParameter("num");
		Long num=Long.valueOf(num1);
		String bookid=request.getParameter("bookid");
		Long id=Long.valueOf(bookid);
		HttpSession session=request.getSession();
		ServletContext stx = session.getServletContext();
		Map<Long,Book> books=(Map<Long, Book>) stx.getAttribute("books");
		//Map<Long,Book> books=(Map<Long, Book>)super.getServletContext().getAttribute("books");
		Book book=books.get(id);
		Orderline line=new Orderline();
		line.setNum(num);
		line.setBook(book);
		ShoppingCart cart = (ShoppingCart) session.getAttribute("cart");
		//加入购物车
		cart.addLine(line);
		response.sendRedirect(request.getContextPath()+"/listBookStore.jsp");
	}

}