二.项目源码

1.登录页面的实现（login.jsp）




    登录页面
    



    登录页面
    
        
            
        
        
            
        
        
        未注册？点击注册
    



    //1.为表单登录绑定提交事件
    document.getElementById("regist").onsubmit = function() {
        //2.获取填写的用户名和密码
        let username = document.getElementById("username").value;
        let password = document.getElementById("password").value;

        //3.判断用户名是否符合规则
        let reg1 = /^[a-zA-Z]{4,16}$/;
        if(!reg1.test(username)) {
            alert("用户名不符合规则，请输入4 ~ 16位纯字母！");
            return false;
        }

        //4.判断密码是否符合规则
        let reg2 = /^[d]{6}$/;
        if(!reg2.test(password)) {
            alert("密码不符合规则，请输入6位纯数字密码！");
            return false;
        }
        //5.如果所有条件都不满足，则提交表单
        return true;
    }

表单信息提交到UserServlet类

package com.hbsi.controller;
import com.hbsi.bean.User;
import com.hbsi.service.UserService;
import com.hbsi.service.impl.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;
@WebServlet("/UserServlet")
public class UserServlet extends HttpServlet {
    UserService service=new UserServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("UTF-8");
        resp.setCharacterEncoding("UTF-8");
        resp.setContentType("text/html;charset=UTF-8");
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        User user=new User(username,password);
        User user1= service.selectUsermassage(user);
        //判断用户名
        if(username==null || "".equals(username)) {
            //2.1用户名为空，重定向到登录页面
            resp.sendRedirect("/cookie/login.jsp");
            return;
        }
        //2.2 用户名不为空，将用户名存入到绘话域
        if(user1 !=  null) {
                req.getSession().setAttribute("user1", user1);
                resp.sendRedirect("/cookie/usermassage.jsp");
        }else {
            req.setAttribute("msg","该用户名未注册或密码错误！！！");//封装请求属性
            req.getRequestDispatcher("login.jsp").forward(req,resp);
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

2.注册页面（register.jsp）





    注册页面
    



    注册新用户
    
        
             ${formBean.errors.username}
        
        


        
             ${formBean.errors.password}
        
        

        
            ${formBean.errors.name}
        
        

        
            ${formBean.errors.email}
        
        

        
            ${formBean.errors.phone}
        
        

        
            ${formBean.errors.address}

注册信息提交到RegisterServlet类

package com.hbsi.controller;
import com.hbsi.bean.RegisterFormBean;
import com.hbsi.bean.User;
import com.hbsi.service.UserService;
import com.hbsi.service.impl.UserServiceImpl;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
@WebServlet("/registservlet")
public class RegistServlet extends HttpServlet {
    UserService service=new UserServiceImpl();

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String username = req.getParameter("username");
        String password = req.getParameter("password");
        String name = req.getParameter("name");
        String email = req.getParameter("email");
        String phone = req.getParameter("phone");
        String address = req.getParameter("address");
        RegisterFormBean formBean = new RegisterFormBean();
        formBean.setUsername(username);
        formBean.setPassword(password);
        formBean.setName(name);
        formBean.setEmail(email);
        formBean.setPhone(phone);
        formBean.setAddress(address);
        if(!formBean.validate()){
            req.setAttribute("formBean",formBean);
            //请求转发到register.jsp
            req.getRequestDispatcher("/regist.jsp").forward(req,resp);
            return;
        }
        User user=new User(username,password,name,email,phone,address);
        Integer insert = service.insert(user);
        if(insert == 1){
            resp.getWriter().println("注册成功");
            resp.getWriter().write("3秒后自动跳转到登录页面...");
            resp.setHeader("Refresh","3;URL=/cookie/login.jsp");
        }else {
            resp.getWriter().println("注册失败");
            resp.getWriter().write("3秒后自动回到注册页面...");
            resp.setHeader("Refresh","3;URL=/cookie/regist.jsp");
        }
    }
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

商品首页(shouye.jsp)





    首页
  
  



  
  
    首 页
    商品分类
    热 销
    个人中心
    注 册
    登 录

3.商品列表（shoplist.jsp）









    商品首页
    



         goodsList = goodsService.selectGoods();
            request.setAttribute("goodsList",goodsList);
        %>
    
            

            【】
         ￥
 
       
    
    
      function showinfo(id) {
          window.location.href = "AddshowinfoServlet?id=" + id;
      }

给buttont添加点击事件，匿名函数中将商品id作为参数传递给AddshowinfoServlet

AddshowinfoServlet

package com.hbsi.controller;

import com.hbsi.bean.Goods;
import com.hbsi.service.GoodsService;
import com.hbsi.service.impl.GoodsServiceImpl;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;
import java.util.List;

@WebServlet("/AddshowinfoServlet")
public class AddshowinfoServlet extends HttpServlet {
    GoodsService goodsService=new GoodsServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String id = req.getParameter("id");
        List goodsinfo = goodsService.selectgoodsById(Integer.valueOf(id));
        for (Goods goods : goodsinfo) {
            req.setAttribute("goods",goods);
        }
        req.getRequestDispatcher("/shopinfo.jsp").forward(req,resp);
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

通过传递过来的id查询商品表的数据，将查询出的商品封装到session中，请求转发到shopinfo.jsp页面

shopinfo.jsp








    Title
    
    $("html,body", window.parent.document).animate({ scrollTop: 0 }, 1000);




    商品详情
    
        
    
    
        蛋糕编号：${goods.id}
        蛋糕名称：${goods.name}
        蛋糕类型：${goods.getType().getName()}
        蛋糕介绍：${goods.intro}
        蛋糕价格：￥${goods.price}
        库存：   ${goods.stock}
        
        
    



    function addCart(id){
        window.location.href = "AddCartServlet?id=" + id;
    }

同样的方式通过传递商品id值去增加购物车功能

AddCartServlet

package com.hbsi.controller;

import com.hbsi.bean.Goods;
import com.hbsi.bean.Order;
import com.hbsi.bean.OrderItem;
import com.hbsi.service.GoodsService;
import com.hbsi.service.impl.GoodsServiceImpl;
import com.hbsi.util.PricesUtils;

import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@WebServlet("/AddCartServlet")
public class AddCartServlet extends HttpServlet {
    GoodsService goodsService=new GoodsServiceImpl();
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String id = req.getParameter("id");
        List goodsList = goodsService.selectgoodsById(Integer.valueOf(id));
        HttpSession session = req.getSession();
        //判断session是否存在购物车
        Map cart = (Map) session.getAttribute("cart");
        if(cart == null){
            cart = new HashMap();
        }
        //考虑购物车是否存在该商品，
        for (Goods goods : goodsList) {
            OrderItem orderItem = cart.get(goods.getId());
            if(orderItem == null){
                orderItem = new OrderItem();
                //若不存在，将该商品添加进购物车
                orderItem.setGoods(goods);
                //设初始数量为1

                orderItem.setAmount(1);
                orderItem.setPrice(goods.getPrice());
            }else{
                //若存在，则数量+1
                orderItem.setAmount(orderItem.getAmount()+1);
                orderItem.setPrice(orderItem.getPrice()+goods.getPrice());
            }
            cart.put(goods.getId(),orderItem);
            session.setAttribute("cart",cart);
        }

        req.getRequestDispatcher("/cart.jsp").forward(req,resp);

    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req, resp);
    }
}

cart.jsp











    Title
    


--%>
${ item.key}--%>
${ item.value}--%>
--%>

我的购物车
 map = (Map) request.getSession().getAttribute("cart");
    if(map == null){
        return;
    }
    double total=0;
    for(Map.Entry entry : map.entrySet()) {
    total=total+entry.getValue().getPrice();

%>
    
        
        蛋糕名称 ：


        蛋糕价格 ：￥
        
            
            
            

        
        小计 ：
        删除订单

javaweb（蛋糕商城）基于 jsp+mybatis+mysql目录二.项目源码登录页面2.注册页面（register.jsp）注册新用户注册成功注册失败商品首页(shouye.jsp) 3.商品列表（shoplist.jsp）商品详情

目录

二.项目源码

1.登录页面的实现（login.jsp）

表单信息提交到UserServlet类

2.注册页面（register.jsp）

注册新用户

注册信息提交到RegisterServlet类

注册成功

注册失败

商品首页(shouye.jsp)

3.商品列表（shoplist.jsp）

给buttont添加点击事件，匿名函数中将商品id作为参数传递给AddshowinfoServlet

AddshowinfoServlet

通过传递过来的id查询商品表的数据，将查询出的商品封装到session中，请求转发到shopinfo.jsp页面

shopinfo.jsp

商品详情

同样的方式通过传递商品id值去增加购物车功能

AddCartServlet

cart.jsp

我的购物车

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