系统技术栈
服务端：Spring + SpringMVC + Mybatis + JSP
数据库：Mysql
前台技术：js + jQuery + bootstrap
系统模块介绍
前台：
用户的登录和注册，注册包括用户名、密码、姓名、手机号、收货地址个人中心（我的订单、积分查看、收货地址、修改密码等）购物车列表（查看当前登录用户的购物车）商品评论商品信息列表（今日推荐、热销排行、新品上市）支付功能
后台：
类目管理商品管理订单管理用户管理评论管理管理员操作退出
前台截图效果
首页
购物车
我的订单
商品详细页（含评论信息）
后台效果截图
登录页
首页
类目管理
商品管理
订单管理
评价管理
数据库表
论文截图
核心代码
UserController类
import java.io.UnsupportedEncodingException;import java.math.BigDecimal;import java.util.Objects;import javax.annotation.Resource;import javax.servlet.ServletRequest;import javax.servlet.http.HttpServletRequest;import javax.servlet.http.HttpSession;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.GetMapping;import org.springframework.web.bind.annotation.PostMapping;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestParam;import org.springframework.web.bind.annotation.ResponseBody;import com.config.ExceptionConfig.MyException;import com.entity.Orders;import com.entity.Users;import com.service.CartService;import com.service.GoodService;import com.service.OrderService;import com.service.UserService;import com.util.PageUtil;import com.util.SafeUtil;/*** 用户相关接口*/@Controller@RequestMapping("/index")public class UserController {@Resourceprivate UserService userService;@Resourceprivate GoodService goodService;@Resourceprivate OrderService orderService;@Resourceprivate CartService cartService;/*** 用户注册** @return*/@GetMapping("/register")public String reg() {return "/index/register.jsp";}/*** 用户注册** @return*/@PostMapping("/register")public String register(Users user, HttpServletRequest request) {if (user.getUsername().isEmpty()) {request.setAttribute("msg", "用户名不能为空!");} else if (Objects.nonNull(userService.getByUsername(user.getUsername()))) {request.setAttribute("msg", "用户名已存在!");} else {userService.add(user);request.setAttribute("msg", "注册成功 可以去登录了!");return "/index/login.jsp";}return "/index/register.jsp";}/*** 用户登录** @return*/@GetMapping("/login")public String log() {return "/index/login.jsp";}/*** 用户登录** @return*/@PostMapping("/login")public String login(Users user, HttpServletRequest request, HttpSession session) {Users loginUser = userService.getByUsernameAndPassword(user.getUsername(), user.getPassword());if (Objects.isNull(loginUser)) {request.setAttribute("msg", "用户名或密码错误");return "/index/login.jsp";}session.setAttribute("user", loginUser);// 还原购物车session.setAttribute("cartCount", cartService.getCount(loginUser.getId()));String referer = request.getHeader("referer"); // 来源页面System.out.println(referer); //TODOreturn "redirect:index";}/*** 注销登录** @return*/@GetMapping("/logout")public String logout(HttpSession session) {session.removeAttribute("user");session.removeAttribute("cartCount");return "/index/login.jsp";}/*** 查看积分*/@GetMapping("/mypoint")public String mypoint() {return "/index/mypoint.jsp";}//积分充值@RequestMapping("/addPoint")public String addPoint(double point, HttpSession session, HttpServletRequest request) {Users users = (Users) session.getAttribute("user");BigDecimal bigDecimal = new BigDecimal(Double.toString(point)).add(new BigDecimal(Double.toString(users.getPoint())));users.setPoint(bigDecimal.doubleValue());int count = userService.updatePoint(users);if (count > 0) {session.setAttribute("user", users);request.setAttribute("msg", "充值成功！");} else {request.setAttribute("msg", "充值失败！");}return "/index/mypoint.jsp";}/*** 查看购物车** @return*/@GetMapping("/cart")public String cart(HttpServletRequest request, HttpSession session) {Users user = (Users) session.getAttribute("user");request.setAttribute("cartList", cartService.getList(user.getId()));request.setAttribute("cartCount", cartService.getCount(user.getId()));request.setAttribute("cartTotal", cartService.getTotal(user.getId()));return "/index/cart.jsp";}/*** 购物车总金额** @return*/@GetMapping("/cartTotal")public @ResponseBodyint cartTotal(HttpSession session) {Users user = (Users) session.getAttribute("user");return cartService.getTotal(user.getId());}/*** 加入购物车** @return*/@PostMapping("/cartBuy")public @ResponseBodyboolean cartBuy(int goodId, HttpSession session) {Users user = (Users) session.getAttribute("user");return cartService.save(goodId, user.getId());}/*** 添加数量*/@PostMapping("/cartAdd")public @ResponseBodyboolean cartAdd(int id) {return cartService.add(id);}/*** 减少数量*/@PostMapping("/cartLess")public @ResponseBodyboolean cartLess(int id) {return cartService.less(id);}/*** 删除*/@PostMapping("/cartDelete")public @ResponseBodyboolean cartDelete(int id) {return cartService.delete(id);}/*** 查看订单** @return* @throws UnsupportedEncodingException*/@GetMapping("/order")public String order(HttpServletRequest request, HttpSession session,@RequestParam(required = false, defaultValue = "1") int page,@RequestParam(required = false, defaultValue = "6") int size) throws UnsupportedEncodingException {Users user = (Users) session.getAttribute("user");request.setAttribute("orderList", orderService.getListByUserid(user.getId(), page, size));request.setAttribute("pageHtml", PageUtil.getPageHtml(request, orderService.getCountByUserid(user.getId()), page, size));return "/index/order.jsp";}/*** 直接购买** @return* @throws MyException*/@PostMapping("/orderAdd")public String orderAdd(int goodId, HttpSession session) throws MyException {Users user = (Users) session.getAttribute("user");int orderId = orderService.add(goodId, user.getId());return "redirect:orderPay?id=" + orderId; // 跳转支付}/*** 购物车结算** @return* @throws MyException*/@GetMapping("/orderSave")public String orderSave(ServletRequest request, HttpSession session) throws MyException {Users user = (Users) session.getAttribute("user");int orderId = orderService.save(user.getId());session.removeAttribute("cartCount"); // 清理购物车sessionreturn "redirect:orderPay?id=" + orderId; // 跳转支付}/*** 支付页面** @return*/@GetMapping("/orderPay")public String orderPay(int id, ServletRequest request) {request.setAttribute("order", orderService.get(id));return "/index/pay.jsp";}/*** 支付(模拟)** @return*/@PostMapping("/orderPay")@ResponseBodypublic int orderPay(Orders order, HttpSession session) {Users users = (Users) session.getAttribute("user");BigDecimal bigDecimal = new BigDecimal(0);if (order.getPaytype() == Orders.PAYTYPE_OFFLINE) {//为积分支付时double d1 = order.getTotal();//商品总价if (users.getPoint().compareTo(d1) < 0) {return -1;} else {//总积分 = 用户积分 - 抵扣积分bigDecimal = new BigDecimal(Double.toString(users.getPoint())).subtract(new BigDecimal(Double.toString(d1)));}} else {double d2 = order.getTotal() / 100;//购买商品获取的积分//总积分 = 用户积分 + 获取的bigDecimal = new BigDecimal(Double.toString(users.getPoint())).add(new BigDecimal(Double.toString(d2)));}users.setPoint(bigDecimal.doubleValue());//保存积分int count = userService.updatePoint(users);if (count > 0) {session.setAttribute("user", users);//更新用户积分}orderService.pay(order);return 1;}/*** 收货地址** @return*/@GetMapping("/address")public String address() { // 使用session中的数据return "/index/address.jsp";}/*** 修改信息** @return*/@PostMapping("/addressUpdate")public String addressUpdate(String name, String phone, String address, HttpServletRequest request, HttpSession session) {Users user = (Users) session.getAttribute("user");userService.update(user.getId(), name, phone, address); // 更新数据库session.setAttribute("user", userService.get(user.getId())); // 更新sessionrequest.setAttribute("msg", "信息修改成功!");return "/index/address.jsp";}/*** 收货地址** @return*/@GetMapping("/password")public String password() { // 使用session中的数据return "/index/password.jsp";}/*** 修改密码** @return*/@PostMapping("/passwordUpdate")public String passwordUpdate(String password, String passwordNew, HttpServletRequest request, HttpSession session) {Users user = (Users) session.getAttribute("user");user = userService.get(user.getId());if (!user.getPassword().equals(SafeUtil.encode(password))) {request.setAttribute("msg", "原密码错误!");} else {userService.updatePassword(user.getId(), passwordNew);request.setAttribute("msg", "密码修改成功!");}return "/index/password.jsp";}@RequestMapping("/userfinish")public String userFinish(int id, byte status,@RequestParam(required = false, defaultValue = "1") int page) {orderService.finish(id);return "redirect:order?page=" + page;}}
UserService实现类（前台用户登录、注册、退出等功能）
package com.service;import java.util.List;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.stereotype.Service;import com.dao.UsersDao;import com.entity.Users;import com.util.SafeUtil;/*** 用户服务*/@Servicepublic class UserService {@Autowiredprivate UsersDao userDao;/*** 总数** @return*/public long getCount() {return userDao.selectCount();}public long queryCount(String username) {return userDao.queryCount(username);}/*** 列表** @param page* @param rows* @return*/public List<Users> getList(int page, int rows) {return userDao.selectList(rows * (page - 1), rows);}public List<Users> queryList(int page, int rows, String username) {return userDao.queryList(rows * (page - 1), rows,username);}/*** 通过id获取** @param id* @return*/public Users get(int id) {return userDao.select(id);}/*** 通过用户名获取** @param username* @return*/public Users getByUsername(String username) {return userDao.selectByUsername(username);}/*** 通过用户名和密码获取** @param username* @param password* @return*/public Users getByUsernameAndPassword(String username, String password) {return userDao.selectByUsernameAndPassword(username, SafeUtil.encode(password));}/*** 添加** @param user* @return*/public boolean add(Users user) {user.setPassword(SafeUtil.encode(user.getPassword()));return userDao.insert(user);}/*** 更新** @param user*/public boolean update(int id, String name, String phone, String address) {Users user = new Users();user.setId(id);user.setName(name);user.setPhone(phone);user.setAddress(address);return userDao.update(user);}/*** 更新** @param user*/public boolean updatePassword(int id, String password) {return userDao.updatePassword(id, SafeUtil.encode(password));}/*** 删除** @param id*/public boolean delete(int id) {return userDao.delete(id);}public int updatePoint(Users users) {return userDao.updatePoint(users);}}
本系统在处理注册请求时，为了保证数据的安全性，采用Md5加密技术对密码进行加密，工具类代码如下：
package com.util;import java.security.MessageDigest;import java.security.NoSuchAlgorithmException;import org.springframework.util.Base64Utils;/*** 安全工具类*/public class SafeUtil {/*** md5加密字符串*/public final static String md5(String str) {MessageDigest messageDigest = null;try {messageDigest = MessageDigest.getInstance("MD5");} catch (NoSuchAlgorithmException e) {e.printStackTrace();}messageDigest.update(str.getBytes());return Base64Utils.encodeToString(messageDigest.digest());}/*** sha1加密字符串*/public final static String sha1(String str) {MessageDigest messageDigest = null;try {messageDigest = MessageDigest.getInstance("SHA-1");} catch (NoSuchAlgorithmException e) {e.printStackTrace();}messageDigest.update(str.getBytes());return Base64Utils.encodeToString(messageDigest.digest());}/*** 使用特定加密范式加密*/public final static String encode(String str) {return md5(sha1(md5(str)));}}
UserDao接口（执行sql语句来落实业务）
public interface UsersDao {@Select("select count(*) from users")public long selectCount();@Select("select * from users order by id desc limit #{begin}, #{size}")public List<Users> selectList(@Param("begin") int begin, @Param("size") int size);@Select("select * from users where id=#{id}")public Users select(int id);@Select("select * from users where username=#{username}")public Users selectByUsername(String username);@Select("select * from users where username=#{username} and password=#{password}")public Users selectByUsernameAndPassword(@Param("username") String username, @Param("password") String password);@Insert("insert into users (username,password,name,phone,address) "+ "values (#{username},#{password},#{name},#{phone},#{address})")@SelectKey(keyProperty = "id", statement = "SELECT LAST_INSERT_ID()", before = false, resultType = Integer.class)public boolean insert(Users user);@Update("update users set name=#{name},phone=#{phone},address=#{address} where id=#{id}")public boolean update(Users user);@Update("update users set password=#{password} where id=#{id}")public boolean updatePassword(@Param("id") int id, @Param("password") String password);@Update("delete from users where id=#{id}")public boolean delete(int id);@Update("update users set point=#{point} where id=#{id}")int updatePoint(Users users);}
写在最后
该系统功能完整，代码简洁易懂，值得我们去学习
