Session案例：购物车操作指南

 package net.pp.session;

    
  
    
 import javax.servlet.ServletException;
    
 import javax.servlet.annotation.WebServlet;
    
 import javax.servlet.http.*;
    
 import java.awt.*;
    
 import java.io.IOException;
    
 import java.util.ArrayList;
    
 import java.util.List;
    
  
    
 @WebServlet(name = "AddCartServlet", urlPatterns = "/addCart")
    
 public class AddCartServlet extends HttpServlet {
    
     protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    
  
    
     }