SpringBoot+微信小程序在线订餐小程序系统附带详细运行指导视频

ゞ浴缸里的玫瑰 2023-10-13 09:25 22阅读 0赞

#### 文章目录 ####

*  一、项目演示
 *  二、项目介绍
 *  三、运行截图
 *  四、主要代码

## 一、项目演示 ##

**项目演示地址：** [视频地址][Link 1]

## 二、项目介绍 ##

项目描述：这是一个**基于SpringBoot+微信小程序框架**开发的在线订餐小程序系统。首先，这是一个**前后端分离**的项目，代码简洁规范，注释说明详细，易于理解和学习。其次，这项目功能丰富，具有一个在线订餐小程序系统该有的所有功能。

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、结算订单、查看个人信息、查看个人订单详情、管理个人地址信息、发布评价信息等等功能。**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、管理所有评价信息等等功能。

应用技术：SpringBoot + 微信小程序 + MySQL + MyBatis + Redis + ElementUI + Lua + Vue + Vant Weapp

运行环境：IntelliJ IDEA2019.3.5 + 微信开发者工具（项目压缩包中自带）+ MySQL5.7（项目压缩包中自带) + Redis5.0.5（项目压缩包中自带） + JDK1.8 + Maven3.6.3（项目压缩包中自带）+ Node14.16.1（项目压缩包中自带）

## 三、运行截图 ##

![在这里插入图片描述][d6d8ccacdf434975b39ce7fec756212d.png]  
![在这里插入图片描述][5a8f5967b372468d87f802b6599bb588.png]  
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![在这里插入图片描述][21cd7898b132443c859e3c3aa5d188d8.png]  
![在这里插入图片描述][1b61114fa0344d85923fe449bd42d157.png]  
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![在这里插入图片描述][b266a55fc3a44e3591d26e6915b3969e.png]  
![在这里插入图片描述][49179567a1134617b81f2f480ac70352.png]  
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![在这里插入图片描述][b2ba7b6ecac84fcfabd8dc80c75e51c9.png]![在这里插入图片描述][83a91668084e4e33b8dbb9fc6efe334a.png]  
![在这里插入图片描述][9f044118505c4556a391c4faae45db79.png]  
![在这里插入图片描述][d36926a129e84820b746be5464dfc48f.png]  
![在这里插入图片描述][693edc10ee77426c9520b7ccb18121a4.png]

## 四、主要代码 ##

**1.提交订单代码**

/**
         * 提交订单操作处理
         * @param orderDTO
         * @return
         */
        @Override
        public ResponseDTO<OrderDTO> submitOrder(OrderDTO orderDTO) {
        
            UserDTO userDTO = new UserDTO();
            userDTO.setToken(orderDTO.getToken());
            ResponseDTO<UserDTO> loginUserResponse = userService.getLoginUser(userDTO);
            if(!CodeMsg.SUCCESS.getCode().equals(loginUserResponse.getCode())) {
        
                return ResponseDTO.errorByMsg(CodeMsg.USER_SESSION_EXPIRED);
            }
            // 获取登录用户信息
            userDTO = loginUserResponse.getData();
            AddressExample addressExample = new AddressExample();
            addressExample.createCriteria().andUserIdEqualTo(userDTO.getId());
            if(addressMapper.selectByExample(addressExample).size() == 0) {
        
                return ResponseDTO.errorByMsg(CodeMsg.ADDRESS_NOT_EXIST);
            }
    
            String[] cartIdList = orderDTO.getCartIdList().split(",");
            CartExample cartExample = new CartExample();
            cartExample.createCriteria().andIdIn(Arrays.stream(cartIdList).collect(Collectors.toList()));
            List<Cart> cartList = cartMapper.selectByExample(cartExample);
            List<String> productIdList = cartList.stream().map(Cart::getProductId).collect(Collectors.toList());
            ProductExample productExample = new ProductExample();
            productExample.createCriteria().andIdIn(productIdList);
            List<Product> productList = productMapper.selectByExample(productExample);
            List<String> productNameList = productList.stream().map(Product::getName).collect(Collectors.toList());
            List<String> productPriceList = productList.stream().map(Product::getPrice).map(String::valueOf).collect(Collectors.toList());
            List<String> productPhotoList = productList.stream().map(Product::getPhoto).map(String::valueOf).collect(Collectors.toList());
            List<String> cartQuantityList = cartList.stream().map(Cart::getQuantity).map(String::valueOf).collect(Collectors.toList());
            String orderId = UuidUtil.getShortUuid();
            String orderDate = CommonUtil.getFormatterDate(new Date(), "yyyy-MM-dd HH:mm:ss");
            // 执行lua脚本
            String result = stringRedisTemplate.execute(
                    SECKILL_SCRIPT,
                    Collections.singletonList(RedisConstant.STOCK_REDIS_KEY_TEMPLATE),
                    StringUtils.join(productIdList, ","),
                    StringUtils.join(productNameList, ","),
                    StringUtils.join(cartQuantityList, ","),
                    orderId,
                    userDTO.getId(),
                    orderDate,
                    StringUtils.join(productPriceList, ","),
                    StringUtils.join(productPhotoList, ","),
                    StringUtils.join(Arrays.asList(cartIdList), ",")
            );
            if(!"成功".equals(result)) {
        
                CodeMsg codeMsg = CodeMsg.PRODUCT_STOCK_OVER;
                codeMsg.setMsg(result);
                return ResponseDTO.errorByMsg(codeMsg);
            }
            orderDTO.setId(orderId);
            return ResponseDTO.success(orderDTO);
        }

**2.购物车保存操作(添加、减少)代码**

/**
         * 购物车保存操作(添加、减少)
         * @param cartDTO
         * @return
         */
        @Override
        public ResponseDTO<Boolean> saveCart(CartDTO cartDTO) {
        
            UserDTO userDTO = new UserDTO();
            userDTO.setToken(cartDTO.getToken());
            ResponseDTO<UserDTO> loginUserResponse = userService.getLoginUser(userDTO);
            if(!CodeMsg.SUCCESS.getCode().equals(loginUserResponse.getCode())) {
        
                return ResponseDTO.errorByMsg(CodeMsg.USER_SESSION_EXPIRED);
            }
            // 获取登录用户信息
            userDTO = loginUserResponse.getData();
            cartDTO.setUserId(userDTO.getId());
    
            Product product = productMapper.selectByPrimaryKey(cartDTO.getProductId());
            if (product == null) {
        
                return ResponseDTO.errorByMsg(CodeMsg.PRODUCT_NOT_EXIST);
            }
            Cart cart = CopyUtil.copy(cartDTO, Cart.class);
            // 判断购物车是否已经有此商品
            CartExample cartExample = new CartExample();
            cartExample.createCriteria().andProductIdEqualTo(cartDTO.getProductId()).andUserIdEqualTo(cartDTO.getUserId());
            List<Cart> cartList = cartMapper.selectByExample(cartExample);
            if(cartList.size() > 0) {
        
                // 购物车中已经有此商品
                if(CartOperateEnum.ADD.getCode().equals(cartDTO.getOperateType())) {
        
                    // 添加操作
                    if(cart.getQuantity() + cartList.get(0).getQuantity() > product.getStock()) {
        
                        return ResponseDTO.errorByMsg(CodeMsg.PRODUCT_STOCK_OVER);
                    }
                    cartList.get(0).setQuantity(cart.getQuantity() + cartList.get(0).getQuantity());
                } else if (CartOperateEnum.SUB.getCode().equals(cartDTO.getOperateType())) {
        
                    // 减少操作
                    if(cartList.get(0).getQuantity() <= cart.getQuantity()) {
        
                        // 删除
                        CartDTO copy = CopyUtil.copy(cartList.get(0), CartDTO.class);
                        copy.setToken(cartDTO.getToken());
                        removeCart(copy);
                        return ResponseDTO.successByMsg(true, "购物车操作成功！");
                    } else {
        
                        cartList.get(0).setQuantity(cartList.get(0).getQuantity() - cart.getQuantity());
                    }
                }
                // 更新数据
                if(cartMapper.updateByPrimaryKeySelective(cartList.get(0)) == 0) {
        
                    return ResponseDTO.errorByMsg(CodeMsg.CART_SAVE_ERROR);
                }
    
            } else {
        
                // 购物车中没有此商品
                if(product.getStock() == 0) {
        
                    return ResponseDTO.errorByMsg(CodeMsg.PRODUCT_STOCK_OVER);
                }
                cart.setId(UuidUtil.getShortUuid());
                // 添加数据
                if(cartMapper.insertSelective(cart) == 0) {
        
                    return ResponseDTO.errorByMsg(CodeMsg.CART_SAVE_ERROR);
                }
            }
            return ResponseDTO.successByMsg(true, "购物车操作成功！");
        }

**3.小程序登录操作代码**

/**
         * 小程序用户登录操作
         * @param userDTO
         * @return
         */
        @Override
        public ResponseDTO<UserDTO> appLogin(UserDTO userDTO) {
        
            // 进行是否为空判断
            if(CommonUtil.isEmpty(userDTO.getUsername())){
        
                return ResponseDTO.errorByMsg(CodeMsg.USERNAME_EMPTY);
            }
            if(CommonUtil.isEmpty(userDTO.getPassword())){
        
                return ResponseDTO.errorByMsg(CodeMsg.PASSWORD_EMPTY);
            }
            // 对比昵称和密码是否正确
            UserExample userExample = new UserExample();
            userExample.createCriteria().andUsernameEqualTo(userDTO.getUsername()).andPasswordEqualTo(userDTO.getPassword());
            List<User> userList = userMapper.selectByExample(userExample);
            if(userList == null || userList.size() != 1){
        
                return ResponseDTO.errorByMsg(CodeMsg.USERNAME_PASSWORD_ERROR);
            }
            // 生成登录token并存入Redis中
            User selectedUser = userList.get(0);
            UserDTO selectedUserDTO = CopyUtil.copy(selectedUser, UserDTO.class);
            String token = UuidUtil.getShortUuid();
            selectedUserDTO.setToken(token);
            //把token存入redis中 有效期1小时
            stringRedisTemplate.opsForValue().set("USER_" + token, JSON.toJSONString(selectedUser), 3600, TimeUnit.SECONDS);
            return ResponseDTO.successByMsg(selectedUserDTO, "登录成功！");
        }

[Link 1]: https://www.bilibili.com/video/BV1fN411U74T/
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