一、项目演示

项目演示地址： 视频地址

二、项目介绍

项目描述：这是一个基于SpringBoot框架开发的百货超市系统。首先，这是一个很适合SpringBoot初学者学习的项目，代码简洁规范，注释说明详细，易于理解和学习。其次，这项目功能完备，具有一个百货超市商城系统的所有基础功能。

项目功能：此项目分为两个角色：普通用户和管理员。普通用户有登录注册、浏览商品信息、添加购物车、提交订单、管理个人信息、管理个人订单等等功能。管理员有管理所有商品信息、管理所有订单信息、管理所有用户信息、查看收益数据图表等等功能。

应用技术：SpringBoot + MyBatis + Thymeleaf + Bootstrap + MySQL

运行环境：Eclipse/IntelliJ IDEA（项目压缩包中自带) + MySQL5.7（项目压缩包中自带) + Maven3.6.3（项目压缩包中自带) + JDK1.8（项目压缩包中自带)

三、运行截图

四、主要代码

1.提交订单代码：

	/*** 结算订单操作* @param orderDTO* @param request* @return*/@Overridepublic ResponseDTO<Boolean> submitOrder(OrderDTO orderDTO, HttpServletRequest request) {// 进行统一表单验证CodeMsg validate = ValidateEntityUtil.validate(orderDTO);if (!validate.getCode().equals(CodeMsg.SUCCESS.getCode())) {return ResponseDTO.errorByMsg(validate);}User user = (User) request.getSession().getAttribute(SessionConstant.HOME_SESSION_LOGIN_KEY);CartExample cartExample = new CartExample();cartExample.createCriteria().andUserIdEqualTo(user.getId());List<Cart> cartList = cartMapper.selectByExample(cartExample);BigDecimal totalPrice = new BigDecimal(0);Order order = CopyUtil.copy(orderDTO, Order.class);order.setId(UuidUtil.getShortUuid());order.setUserId(user.getId());order.setDeleted(OrderDeleteEnum.NO.getCode());order.setCreateTime(new Date());List<OrderItem> orderItemList = new ArrayList<>();// 验证库存和计算总价for(Cart cart : cartList) {Product product = productMapper.selectByPrimaryKey(cart.getProductId());if(cart.getQuantity() > product.getStock()) {CodeMsg codeMsg = CodeMsg.PRODUCT_STOCK_OVER;codeMsg.setMsg("商品【" + product.getName() + "】库存不足！");return ResponseDTO.errorByMsg(codeMsg);}totalPrice = totalPrice.add(product.getPrice().multiply(new BigDecimal(cart.getQuantity())));OrderItem orderItem = new OrderItem();orderItem.setId(UuidUtil.getShortUuid());orderItem.setProductId(cart.getProductId());orderItem.setOrderId(order.getId());orderItem.setProductName(product.getName());orderItem.setProductPhoto(product.getPhoto());orderItem.setProductPrice(product.getPrice());orderItem.setQuantity(cart.getQuantity());orderItem.setSumPrice(new BigDecimal(cart.getQuantity()).multiply(product.getPrice()));orderItemList.add(orderItem);}// 订单详情落库for(OrderItem orderItem : orderItemList) {if(orderItemMapper.insertSelective(orderItem) == 0) {throw new RuntimeException(CodeMsg.ORDER_ADD_ERROR.getMsg());}}// 订单数据落地order.setState(OrderStateEnum.PAYED.getCode());order.setTotalPrice(totalPrice);if(orderMapper.insertSelective(order) == 0) {throw new RuntimeException(CodeMsg.ORDER_ADD_ERROR.getMsg());}// 清空购物车数据cartMapper.deleteByExample(cartExample);return ResponseDTO.successByMsg(true,"下单成功");}

2.前台用户登录代码：

 	/*** 前台用户登录操作* @param userDTO* @param request* @return*/@Overridepublic ResponseDTO<Boolean> homeLogin(UserDTO userDTO, HttpServletRequest request) {if(userDTO == null) {return ResponseDTO.errorByMsg(CodeMsg.DATA_ERROR);}if(CommonUtil.isEmpty(userDTO.getUsername())) {return ResponseDTO.errorByMsg(CodeMsg.USERNAME_EMPTY);}if(CommonUtil.isEmpty(userDTO.getPassword())) {return ResponseDTO.errorByMsg(CodeMsg.PASSWORD_EMPTY);}UserExample userExample = new UserExample();userExample.createCriteria().andUsernameEqualTo(userDTO.getUsername()).andPasswordEqualTo(userDTO.getPassword());List<User> userList = userMapper.selectByExample(userExample);if(userList.size() == 0) {return ResponseDTO.errorByMsg(CodeMsg.USERNAME_PASSWORD_ERROR);}request.getSession().setAttribute(SessionConstant.HOME_SESSION_LOGIN_KEY, userList.get(0));return ResponseDTO.successByMsg(true, "登录成功！");}

3.保存商品信息代码：

	/*** 保存商品信息* @param productDTO* @return*/@Overridepublic ResponseDTO<Boolean> save(ProductDTO productDTO) {if(productDTO == null) {return ResponseDTO.errorByMsg(CodeMsg.DATA_ERROR);}// 进行统一表单验证CodeMsg validate = ValidateEntityUtil.validate(productDTO);if (!validate.getCode().equals(CodeMsg.SUCCESS.getCode())) {return ResponseDTO.errorByMsg(validate);}Product product = CopyUtil.copy(productDTO, Product.class);if(CommonUtil.isEmpty(product.getId())){// 添加操作product.setId(UuidUtil.getShortUuid());product.setCreateTime(new Date());if(productMapper.insertSelective(product) == 0){return ResponseDTO.errorByMsg(CodeMsg.PRODUCT_ADD_ERROR);}}else {// 修改操作if(productMapper.updateByPrimaryKeySelective(product) == 0){return ResponseDTO.errorByMsg(CodeMsg.PRODUCT_EDIT_ERROR);}}return ResponseDTO.success(true);}