苍穹外卖学习笔记（十六）

时间：2024-10-08 17:23:40

文章目录

  • 二. 购物车功能
    • 添加购物车
      • ShoppingCartController
      • ShoppingCartService
      • ShoppingCartServiceImpl
      • ShoppingCartMapper
      • ShoppingCartMapper
      • application
    • 查看购物车
      • ShoppingCartController
      • ShoppingCartService
      • ShoppingCartServiceImpl
    • 清空购物车
      • ShoppingCartController
      • ShoppingCartService
      • ShoppingCartServiceImpl
    • 删除购物车中一个商品
      • ShoppingCartController
      • ShoppingCartService
      • ShoppingCartServiceImpl

二. 购物车功能

添加购物车

ShoppingCartController

package com.sky.controller.user;

import com.sky.dto.ShoppingCartDTO;
import com.sky.result.Result;
import com.sky.service.ShoppingCartService;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * @author Jie.
 * @description: TODO
 * @date 2024/10/7
 * @version: 1.0
 */
@RestController
@RequestMapping("/user/shoppingCart")
@Api(tags = "购物车")
@Slf4j
public class ShoppingCartController {

    @Autowired
    private ShoppingCartService shoppingCartService;

    /**
     * 添加购物车
     */
    @PostMapping("add")
    @ApiOperation(value = "添加购物车")
    public Result add(@RequestBody ShoppingCartDTO shoppingCartDTO) {
        log.info("添加购物车:{}", shoppingCartDTO);
        shoppingCartService.addShoppingCart(shoppingCartDTO);
        return Result.success();
    }
}

ShoppingCartService

package com.sky.service;

import com.sky.dto.ShoppingCartDTO;

/**
 * @author Jie.
 * @description: TODO
 * @date 2024/10/7
 * @version: 1.0
 */
public interface ShoppingCartService {

    /**
     * 添加购物车
     */
    void addShoppingCart(ShoppingCartDTO shoppingCartDTO);
}

ShoppingCartServiceImpl

package com.sky.service.impl;

import com.sky.context.BaseContext;
import com.sky.dto.ShoppingCartDTO;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.ShoppingCart;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.mapper.ShoppingCartMapper;
import com.sky.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

/**
 * @author Jie.
 * @description: TODO
 * @date 2024/10/7
 * @version: 1.0
 */
@Service
@Slf4j
public class ShoppingCartServiceImpl implements ShoppingCartService {

    @Autowired
    private ShoppingCartMapper shoppingCartMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;

    /**
     * 添加购物车
     */
    @Override
    public void addShoppingCart(ShoppingCartDTO shoppingCartDTO) {
        //判断加入购物车的商品是否已经存在
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        Long currentId = BaseContext.getCurrentId();
        shoppingCart.setUserId(currentId);
        //查询购物车列表
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        //如果存在，修改商品数量
        if (list != null && !list.isEmpty()) {
            ShoppingCart cart = list.get(0);
            cart.setNumber(cart.getNumber() + 1);//数量加1
            shoppingCartMapper.updateById(cart);
        }
        //如果不存在，添加商品
        else {
            //判断是菜品还是套餐
            Long dishId = shoppingCartDTO.getDishId();
            if (dishId != null) {
                //菜品
                Dish dish = dishMapper.selectById(dishId);
                shoppingCart.setName(dish.getName());
                shoppingCart.setImage(dish.getImage());
                shoppingCart.setAmount(dish.getPrice());
            } else {
                //套餐
                Long setmealId = shoppingCartDTO.getSetmealId();
                Setmeal setmeal = setmealMapper.selectById(setmealId);
                shoppingCart.setName(setmeal.getName());
                shoppingCart.setImage(setmeal.getImage());
                shoppingCart.setAmount(setmeal.getPrice());
            }
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartMapper.insert(shoppingCart);
        }
    }
}

ShoppingCartMapper

package com.sky.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.sky.entity.ShoppingCart;
import org.apache.ibatis.annotations.Mapper;

import java.util.List;

/**
 * @author Jie.
 * @description: TODO
 * @date 2024/10/7
 * @version: 1.0
 */
@Mapper
public interface ShoppingCartMapper extends BaseMapper<ShoppingCart> {

    /**
     * 查询购物车列表
     */
    List<ShoppingCart> list(ShoppingCart shoppingCart);
}

ShoppingCartMapper

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.sky.mapper.ShoppingCartMapper">

    <select id="list" resultType="com.sky.entity.ShoppingCart">
        SELECT * FROM shopping_cart
        <where>
            <if test="userId != null">
                AND user_id = #{userId}
            </if>
            <if test="setmealId != null">
                AND setmeal_id = #{setmealId}
            </if>
            <if test="dishId != null">
                AND dish_id = #{dishId}
            </if>
            <if test="dishFlavor != null">
                AND dish_flavor = #{dishFlavor}
            </if>
        </where>
    </select>
</mapper>

application

server:
  port: 8080

spring:
  profiles:
    active: dev
  main:
    allow-circular-references: true
  datasource:
    druid:
      driver-class-name: ${sky.datasource.driver-class-name}
      url: jdbc:mysql://${sky.datasource.host}:${sky.datasource.port}/${sky.datasource.database}?serverTimezone=Asia/Shanghai&useUnicode=true&characterEncoding=utf-8&zeroDateTimeBehavior=convertToNull&useSSL=false&allowPublicKeyRetrieval=true
      username: ${sky.datasource.username}
      password: ${sky.datasource.password}
  redis:
    host: ${sky.redis.host}
    post: ${sky.redis.post}
    database: ${sky.redis.database}



# mybatis-plus配置
mybatis-plus:
  configuration:
    # 驼峰命名
    map-underscore-to-camel-case: true
    # 日志
    log-impl: org.apache.ibatis.logging.stdout.StdOutImpl
  global-config:
    db-config:
      id-type: auto
  mapper-locations: classpath:mapper/*.xml

# 日志配置
logging:
  level:
    com:
      sky:
        mapper: debug
        service: info
        controller: info

sky:
  jwt:
    # 设置jwt签名加密时使用的秘钥
    admin-secret-key: itcast
    # 设置jwt过期时间
    admin-ttl: 720000000
    # 设置前端传递过来的令牌名称
    admin-token-name: token
    # 设置jwt签名加密时使用的秘钥
    user-secret-key: itheima
    # 设置jwt过期时间
    user-ttl: 720000000
    # 设置前端传递过来的令牌名称
    user-token-name: authentication
  alioss:
    endpoint: ${sky.alioss.endpoint}
    access-key-id: ${sky.alioss.access-key-id}
    access-key-secret: ${sky.alioss.access-key-secret}
    bucket-name: ${sky.alioss.bucket-name}
  wechat:
    appid: ${sky.wechat.appid}
    secret: ${sky.wechat.secret}

查看购物车

ShoppingCartController

 /**
     * 查看购物车
     */
    @GetMapping("list")
    @ApiOperation(value = "查看购物车")
    public Result<List<ShoppingCart>> list() {
        List<ShoppingCart> list = shoppingCartService.showShoppingCart();
        return Result.success(list);
    }

ShoppingCartService

 /**
     * 查看购物车
     */
    List<ShoppingCart> showShoppingCart();

ShoppingCartServiceImpl

  /**
     * 查看购物车
     */
    @Override
    public List<ShoppingCart> showShoppingCart() {
        Long currentId = BaseContext.getCurrentId();
        ShoppingCart shoppingCart = ShoppingCart.builder()
                .userId(currentId)
                .build();
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        return list;
    }

清空购物车

ShoppingCartController

    /**
     * 清空购物车
     */
    @DeleteMapping("clean")
    @ApiOperation(value = "清空购物车")
    public Result clean() {
        shoppingCartService.cleanShoppingCart();
        return Result.success();
    }

ShoppingCartService

 /**
     * 清空购物车
     */
    void cleanShoppingCart();

ShoppingCartServiceImpl

   /**
     * 清空购物车
     */
    @Override
    public void cleanShoppingCart() {
        Long currentId = BaseContext.getCurrentId();
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId, currentId);
        shoppingCartMapper.delete(wrapper);
    }

删除购物车中一个商品

ShoppingCartController

    /**
     * 删除购物车中一个商品
     */
    @PostMapping("/sub")
    public Result sub(@RequestBody ShoppingCartDTO shoppingCartDTO) {
        log.info("删除购物车中一个商品:{}", shoppingCartDTO);
        shoppingCartService.subShoppingCart(shoppingCartDTO);
        return Result.success();
    }

ShoppingCartService

 /**
     * 删除购物车商品
     */
    void subShoppingCart(ShoppingCartDTO shoppingCartDTO);

ShoppingCartServiceImpl

   /**
     * 删除购物车商品
     */
    @Override
    public void subShoppingCart(ShoppingCartDTO shoppingCartDTO) {
        ShoppingCart shoppingCart = new ShoppingCart();
        BeanUtils.copyProperties(shoppingCartDTO, shoppingCart);
        Long currentId = BaseContext.getCurrentId();
        shoppingCart.setUserId(currentId);
        List<ShoppingCart> list = shoppingCartMapper.list(shoppingCart);
        if (list != null && !list.isEmpty()) {
            ShoppingCart cart = list.get(0);
            if (cart.getNumber() > 1) {
                cart.setNumber(cart.getNumber() - 1);
                shoppingCartMapper.updateById(cart);
            } else {
                shoppingCartMapper.deleteById(cart.getId());
            }
        }
    }

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