1.需求分析和設計

產品原型

業務規則：

菜品名稱必須是唯一的

菜品必須屬于某個分類下，不能單獨存在

新增菜品時可以根據情況選擇菜品的口味

每個菜品必須對應一張圖片

接口設計：

根據類型查詢分類(已完成)

文件上傳

新增菜品

根據類型查詢分類

數據庫設計(dish菜品表和dish_flavor口味表)

2.代碼開發

OssConfiguration代碼：

package com.sky.config;import com.sky.properties.AliOssProperties;
import com.sky.utils.AliOssUtil;
import lombok.extern.slf4j.Slf4j;
import org.springframework.boot.autoconfigure.condition.ConditionalOnMissingBean;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;/*** 配置類，用于創建AliOssUtil對象*/
@Configuration//注解，表示這是員工配置類
@Slf4j
public class OssConfiguration {@Bean//交給spring容器管理@ConditionalOnMissingBean//保證Spring容器里只有員工Util對象public AliOssUtil aliOssUtil(AliOssProperties aliOssProperties){log.info("開始創建阿里云文件上傳工具類對象：{}",aliOssProperties);return new AliOssUtil(aliOssProperties.getEndpoint(),aliOssProperties.getAccessKeyId(),aliOssProperties.getAccessKeySecret(),aliOssProperties.getBucketName());//讀取配置文件內的數據，然后給配置類賦值}
}

CommonController代碼：

package com.sky.controller.admin;import com.sky.constant.MessageConstant;
import com.sky.result.Result;
import com.sky.utils.AliOssUtil;
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.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;import java.io.IOException;
import java.util.UUID;/*** 通用接口*/
@RestController
@RequestMapping("/admin/common")
@Api(tags = "通用接口")
@Slf4j
public class CommonController {@Autowiredprivate AliOssUtil aliOssUtil;/*** 文件上傳* @param file* @return*/@PostMapping("/upload")@ApiOperation("文件上傳")public Result<String> upload(MultipartFile file){//參數名要和前端的保持一致log.info("文件上傳:{}",file);try {//原始文件String originalFilename = file.getOriginalFilename();//截取原始文件名的后綴String extension = originalFilename.substring(originalFilename.lastIndexOf("."));//構造新文件名稱String objectName = UUID.randomUUID().toString() + extension;//文件的請求路徑String filePath = aliOssUtil.upload(file.getBytes(),objectName);return Result.success(filePath);} catch (IOException e) {log.info("文件上傳失敗：{}",e);}return Result.error(MessageConstant.UPLOAD_FAILED);}
}

DishController代碼：

package com.sky.controller.admin;import com.sky.dto.DishDTO;
import com.sky.result.Result;
import com.sky.service.DishService;
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;/*** 菜品管理*/
@RestController
@RequestMapping("/admin/dish")
@Api(tags = "菜品管理接口")
@Slf4j
public class DishController {@Autowiredprivate DishService dishService;/*** 新增菜品* @param dishDTO* @return*/@PostMapping@ApiOperation("新增菜品")public Result save(@RequestBody DishDTO dishDTO){log.info("新增菜品：{}",dishDTO);dishService.saveWithFlavor(dishDTO);return Result.success();}
}

DishService代碼：

package com.sky.service;import com.sky.dto.DishDTO;
import org.springframework.context.annotation.Bean;
import org.springframework.stereotype.Service;@Service
public interface DishService {/*** 新增菜品和對應的口味* @param dishDTO*/void saveWithFlavor(DishDTO dishDTO);
}

DishServiceImpl代碼：

package com.sky.service.impl;import com.sky.dto.DishDTO;
import com.sky.entity.Dish;
import com.sky.entity.DishFlavor;
import com.sky.mapper.DishFlavorMapper;
import com.sky.mapper.DishMapper;
import com.sky.service.DishService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;import java.util.List;@Service
@Slf4j
public class DishServiceImpl implements DishService {@Autowiredprivate DishMapper dishMapper;@Autowiredprivate DishFlavorMapper dishFlavorMapper;/*** 新增菜品和對應的口味* @param dishDTO*/@Transactionalpublic void saveWithFlavor(DishDTO dishDTO) {Dish dish = new Dish();BeanUtils.copyProperties(dishDTO,dish);//向菜品表插入1條數據dishMapper.insert(dish);//獲取inset語句生成的主鍵值Long dishId = dish.getId();//向口味表插入n條數據List<DishFlavor> flavors = dishDTO.getFlavors();if(flavors != null && flavors.size() > 0){//是否有口味數據flavors.forEach(dishFlavor -> {dishFlavor.setDishId(dishId);});dishFlavorMapper.insertBatch(flavors);}}
}

DishMapper代碼：

package com.sky.mapper;import com.sky.annotation.AutoFill;
import com.sky.entity.Dish;
import com.sky.enumeration.OperationType;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;@Mapper
public interface DishMapper {/*** 根據分類id查詢菜品數量* @param categoryId* @return*/@Select("select count(id) from dish where category_id = #{categoryId}")Integer countByCategoryId(Long categoryId);/*** 新增菜品數據* @param dish*/@AutoFill(value = OperationType.INSERT)void insert(Dish dish);
}

DishFlavorMapper代碼：

package com.sky.mapper;import com.sky.entity.DishFlavor;
import org.apache.ibatis.annotations.Mapper;import java.util.List;@Mapper
public interface DishFlavorMapper {/*** 批量插入口味數據* @param flavors*/void insertBatch(List<DishFlavor> flavors);
}

DishMapper.xml代碼

<?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.DishMapper"><insert id="insert" useGeneratedKeys="true" keyProperty="id">/*useGeneratedKeys="true"表示剛剛插入所生成的主鍵值,keyProperty="id"將id返回值給id*/INSERT INTO dish (name,category_id,price,image,description,create_time,update_time,create_user,update_user,status)VALUES(#{name},#{categoryId},#{price},#{image},#{description},#{createTime},#{updateTime},#{createUser},#{updateUser},#{status})</insert>
</mapper>

DishFlavorMapper.xml代碼：

<?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.DishFlavorMapper"><insert id="insertBatch">INSERT INTO dish_flavor(dish_id,name,value) VALUES<foreach collection="flavors" item="df" separator=",">(#{df.dishId},#{df.name},#{df.value})</foreach></insert>
</mapper>

yml文件代碼：

  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}alioss:endpoint: oss-cn-beijing.aliyuncs.comaccess-key-id: LTAI5tPeFLzsPPT8gG3LPW64access-key-secret: U6k1brOZ8gaOIXv3nXbulGTUzy6Pd7bucket-name: sky-itcast