SSM网上商城购物系统（前台+后台）

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*/
@Service
public 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

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