文章目录

项目描述这是一个基于SpringBoot微信小程序框架开发的奶茶在线点单小程序系统。

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奶茶在线点单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

UserDTO();userDTO.setToken(orderDTO.getToken());ResponseDTOUserDTO

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

AddressExample();addressExample.createCriteria().andUserIdEqualTo(userDTO.getId());if(addressMapper.selectByExample(addressExample).size()

{return

ResponseDTO.errorByMsg(CodeMsg.ADDRESS_NOT_EXIST);}String[]

cartIdList

orderDTO.getCartIdList().split(,);CartExample

cartExample

CartExample();cartExample.createCriteria().andIdIn(Arrays.stream(cartIdList).collect(Collectors.toList()));ListCart

cartList

cartMapper.selectByExample(cartExample);ListString

productIdList

cartList.stream().map(Cart::getProductId).collect(Collectors.toList());ProductExample

productExample

ProductExample();productExample.createCriteria().andIdIn(productIdList);ListProduct

productList

productMapper.selectByExample(productExample);ListString

productNameList

productList.stream().map(Product::getName).collect(Collectors.toList());ListString

productPriceList

productList.stream().map(Product::getPrice).map(String::valueOf).collect(Collectors.toList());ListString

productPhotoList

productList.stream().map(Product::getPhoto).map(String::valueOf).collect(Collectors.toList());ListString

cartQuantityList

cartList.stream().map(Cart::getQuantity).map(String::valueOf).collect(Collectors.toList());String

orderId

CommonUtil.getFormatterDate(new

Date(),

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),

{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

/***

UserDTO();userDTO.setToken(cartDTO.getToken());ResponseDTOUserDTO

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

ResponseDTO.errorByMsg(CodeMsg.PRODUCT_NOT_EXIST);}Cart

cart

CartExample();cartExample.createCriteria().andProductIdEqualTo(cartDTO.getProductId()).andUserIdEqualTo(cartDTO.getUserId());ListCart

cartList

cartMapper.selectByExample(cartExample);if(cartList.size()

{//

购物车中已经有此商品if(CartOperateEnum.ADD.getCode().equals(cartDTO.getOperateType()))

{//

ResponseDTO.errorByMsg(CodeMsg.PRODUCT_STOCK_OVER);}cartList.get(0).setQuantity(cart.getQuantity()

cartList.get(0).getQuantity());}

else

(CartOperateEnum.SUB.getCode().equals(cartDTO.getOperateType()))

{//

减少操作if(cartList.get(0).getQuantity()

cart.getQuantity())

CartDTO.class);copy.setToken(cartDTO.getToken());removeCart(copy);return

购物车操作成功);}

{cartList.get(0).setQuantity(cartList.get(0).getQuantity()

更新数据if(cartMapper.updateByPrimaryKeySelective(cartList.get(0))

{return

ResponseDTO.errorByMsg(CodeMsg.CART_SAVE_ERROR);}}

else

ResponseDTO.errorByMsg(CodeMsg.PRODUCT_STOCK_OVER);}cart.setId(UuidUtil.getShortUuid());//

添加数据if(cartMapper.insertSelective(cart)

{return

ResponseDTO.errorByMsg(CodeMsg.CART_SAVE_ERROR);}}return

/***

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);}//

userExample

UserExample();userExample.createCriteria().andUsernameEqualTo(userDTO.getUsername()).andPasswordEqualTo(userDTO.getPassword());ListUser

userList

userMapper.selectByExample(userExample);if(userList

null

ResponseDTO.errorByMsg(CodeMsg.USERNAME_PASSWORD_ERROR);}//

selectedUser

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,

ResponseDTO.successByMsg(selectedUserDTO,

登录成功);}