• SpringBoot 项目实战 ~ 8.移动端（用户端）管理


    北方有佳人，绝世而独立。 一顾倾人城，再顾倾人国。


    ![在这里插入图片描述](https://img-blog.csdnimg.cn/0b8436f24cd8424c90b47e3b53a62453.png#pic_center)

    一、地址管理

    1. 需求分析

    移动端用户的地址信息；一个用户可以有多个地址信息，但是只能有一个默认地址。

    在这里插入图片描述


    2. 编码实现

    ⑴. 实体类

    新建 src/main/java/com/reggie/entity/AddressBook 类：

    package com.reggie.entity;

import com.baomidou.mybatisplus.annotation.FieldFill;
import com.baomidou.mybatisplus.annotation.TableField;
import lombok.Data;
import java.io.Serializable;
import java.time.LocalDateTime;

/**
 * 地址簿
 */
@Data
public class AddressBook implements Serializable {

    private static final long serialVersionUID = 1L;

    private Long id;


    //用户id
    private Long userId;


    //收货人
    private String consignee;


    //手机号
    private String phone;


    //性别 0 女 1 男
    private String sex;


    //省级区划编号
    private String provinceCode;


    //省级名称
    private String provinceName;


    //市级区划编号
    private String cityCode;


    //市级名称
    private String cityName;


    //区级区划编号
    private String districtCode;


    //区级名称
    private String districtName;


    //详细地址
    private String detail;


    //标签
    private String label;

    //是否默认 0 否 1是
    private Integer isDefault;

    //创建时间
    @TableField(fill = FieldFill.INSERT)
    private LocalDateTime createTime;


    //更新时间
    @TableField(fill = FieldFill.INSERT_UPDATE)
    private LocalDateTime updateTime;


    //创建人
    @TableField(fill = FieldFill.INSERT)
    private Long createUser;


    //修改人
    @TableField(fill = FieldFill.INSERT_UPDATE)
    private Long updateUser;


    //是否删除
    private Integer isDeleted;
}

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    ⑵. Mapper

    新建 src/main/java/com/reggie/mapper/AddressBookMapper 接口：

    package com.reggie.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.reggie.entity.AddressBook;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface AddressBookMapper extends BaseMapper<AddressBook> {
}

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    ⑶. Service 接口

    新建 src/main/java/com/reggie/service/AddressBookService 类：

    package com.reggie.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.reggie.entity.AddressBook;

public interface AddressBookService extends IService<AddressBook> {
}

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    ⑷. Service 实现类

    新建 src/main/java/com/reggie/service/impl/AddressBookServiceImpl 类：

    package com.reggie.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.reggie.entity.AddressBook;
import com.reggie.mapper.AddressBookMapper;
import com.reggie.service.AddressBookService;
import org.springframework.stereotype.Service;

@Service
public class AddressBookServiceImpl extends ServiceImpl<AddressBookMapper, AddressBook> implements AddressBookService {
}

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    ⑸. 控制层

    新建 src/main/java/com/reggie/controller/AddressBookController.java 文件：

    package com.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.conditions.update.LambdaUpdateWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.reggie.common.BaseContext;
import com.reggie.common.R;
import com.reggie.entity.AddressBook;
import com.reggie.service.AddressBookService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.*;

import java.util.List;

/**
 * 地址管理
 */
@Slf4j
@RestController
@RequestMapping("/addressBook")
public class AddressBookController {

    @Autowired
    private AddressBookService addressBookService;

    /**
     * 新增
     */
    @PostMapping
    public R<AddressBook> save(@RequestBody AddressBook addressBook) {
        addressBook.setUserId(BaseContext.getCurrentId());
        log.info("addressBook:{}", addressBook);
        addressBookService.save(addressBook);
        return R.success(addressBook);
    }

    /**
     * 设置默认地址
     */
    @PutMapping("default")
    public R<AddressBook> setDefault(@RequestBody AddressBook addressBook) {
        log.info("addressBook:{}", addressBook);
        LambdaUpdateWrapper<AddressBook> wrapper = new LambdaUpdateWrapper<>();
        wrapper.eq(AddressBook::getUserId, BaseContext.getCurrentId());
        wrapper.set(AddressBook::getIsDefault, 0);
        //SQL:update address_book set is_default = 0 where user_id = ?
        addressBookService.update(wrapper);

        addressBook.setIsDefault(1);
        //SQL:update address_book set is_default = 1 where id = ?
        addressBookService.updateById(addressBook);
        return R.success(addressBook);
    }

    /**
     * 根据id查询地址
     */
    @GetMapping("/{id}")
    public R get(@PathVariable Long id) {
        AddressBook addressBook = addressBookService.getById(id);
        if (addressBook != null) {
            return R.success(addressBook);
        } else {
            return R.error("没有找到该对象");
        }
    }

    /**
     * 查询默认地址
     */
    @GetMapping("default")
    public R<AddressBook> getDefault() {
        LambdaQueryWrapper<AddressBook> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(AddressBook::getUserId, BaseContext.getCurrentId());
        queryWrapper.eq(AddressBook::getIsDefault, 1);

        //SQL:select * from address_book where user_id = ? and is_default = 1
        AddressBook addressBook = addressBookService.getOne(queryWrapper);

        if (null == addressBook) {
            return R.error("没有找到该对象");
        } else {
            return R.success(addressBook);
        }
    }

    /**
     * 查询指定用户的全部地址
     */
    @GetMapping("/list")
    public R<List<AddressBook>> list(AddressBook addressBook) {
        addressBook.setUserId(BaseContext.getCurrentId());
        log.info("addressBook:{}", addressBook);

        //条件构造器
        LambdaQueryWrapper<AddressBook> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(null != addressBook.getUserId(), AddressBook::getUserId, addressBook.getUserId());
        queryWrapper.orderByDesc(AddressBook::getUpdateTime);

        //SQL:select * from address_book where user_id = ? order by update_time desc
        return R.success(addressBookService.list(queryWrapper));
    }
}

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    二、主页（菜品）展示

    1. 需求分析

    首页需要根据分类来展示菜品和套餐。如果菜品设置了口味信息，需要展示 【选择规格】 按钮，否则显示 【+】 按钮

    在这里插入图片描述

    1. 页面( front/index.html)发送ajax请求，获取分类数据（菜品分类和套餐分类）
    2. 页面发送ajax请求，获取第一个分类下的菜品或者套餐


    2. 编码实现

    ⑴. 购物车

    首页加载完成后，还发送了一次ajax请求用于加载购物车数据，此处可以将这次请求的地址暂时修改一下，从静态json文件获取数据，等后续开发购物车功能时再修改回来

    编辑 src/main/resources/front/api/main.js API请求：

    ...

//获取购物车内商品的集合
function cartListApi(data) {
    return $axios({
        // 'url': '/shoppingCart/list',
        'url': '/front/cartData.json',
        'method': 'get',
        params:{...data}
    })
}

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    新建 src/main/resources/front/cartData.json 文件：

    {"code":1,"msg":null,"data":[],"map":{}}

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    ⑵. 菜品查询

    为了满足移动端对数据的要求(菜品基本信息和菜品对应的口味信息)，现在需要将方法的返回值类型改为：R

    编辑 src/main/java/com/reggie/controller/UserController.java 文件：

        ...

    /**
     * 根据条件查询对应的菜品数据
     * @param dish
     * @return
     */
    // @GetMapping("/list")
    /* public R> list(Dish dish) {
        // 构造查询条件
        LambdaQueryWrapper queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        // 添加条件，状态为 1 （起售） 的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        // 添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List list = dishService.list(queryWrapper);
        return R.success(list);
    } */

    @GetMapping("/list")
    public R<List<DishDto>> list(Dish dish) {
        // 构造查询条件
        LambdaQueryWrapper<Dish> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(dish.getCategoryId() != null, Dish::getCategoryId, dish.getCategoryId());
        // 添加条件，状态为 1 （起售） 的菜品
        queryWrapper.eq(Dish::getStatus, 1);
        // 添加排序条件
        queryWrapper.orderByAsc(Dish::getSort).orderByDesc(Dish::getUpdateTime);
        List<Dish> list = dishService.list(queryWrapper);
        List<DishDto> dishDtoList = list.stream().map((item) -> {
            DishDto dishDto = new DishDto();
            BeanUtils.copyProperties(item, dishDto);
            Long categoryId = item.getCategoryId();
            Category category = categoryService.getById(categoryId);
            if(category != null) {
                String categoryName = category.getName();
                dishDto.setCategoryName(categoryName);
            }
            
            // 当前菜品的口味
            Long dishId = item.getId(); // 菜品 ID
            LambdaQueryWrapper<DishFlavor> lambdaQueryWrapper = new LambdaQueryWrapper<>();
            lambdaQueryWrapper.eq(DishFlavor::getDishId, dishId);
            // SQL: select * from dish_flavor where dish_id ?
            List<DishFlavor> dishFlavorList = dishFlavorService.list(lambdaQueryWrapper);
            dishDto.setFlavors(dishFlavorList);

            return dishDto;
        }).collect(Collectors.toList());

        return R.success(dishDtoList);
    }
}

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    ⑶. 套餐查询

    编辑 src/main/java/com/reggie/controller/SetmealController.java 文件：

        ...

    /**
     * 根据条件查询套餐数据
     * @param setmeal
     * @return
     */
    @GetMapping("/list")
    public R<List<Setmeal>> list(Setmeal setmeal) {
        LambdaQueryWrapper<Setmeal> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(setmeal.getCategoryId() != null, Setmeal::getCategoryId, setmeal.getCategoryId());
        queryWrapper.eq(setmeal.getStatus() != null, Setmeal::getStatus, setmeal.getStatus());
        queryWrapper.orderByDesc(Setmeal::getUpdateTime);

        List<Setmeal> list = setmealService.list(queryWrapper);

        return R.success(list);
    }
}

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    三、购物车

    1. 需求分析

    在这里插入图片描述

    1. 点击 【加入购物车】 或者 【+】 按钮，页面发送ajax请求，请求服务端，将菜品或者套餐添加到购物车
    2. 点击购物车图标，页面发送ajax请求，请求服务端查询购物车中的菜品和套餐
    3. 点击清空购物车按钮，页面发送ajax请求，请求服务端来执行清空购物车操作


    2. 结构搭建

    ⑴. 实体类

    新建 src/main/java/com/reggie/entity/ShoppingCart 类：

    package com.reggie.entity;

import lombok.Data;
import java.io.Serializable;
import java.math.BigDecimal;
import java.time.LocalDateTime;

/**
 * 购物车
 */
@Data
public class ShoppingCart implements Serializable {

    private static final long serialVersionUID = 1L;

    private Long id;

    //名称
    private String name;

    //用户id
    private Long userId;

    //菜品id
    private Long dishId;

    //套餐id
    private Long setmealId;

    //口味
    private String dishFlavor;

    //数量
    private Integer number;

    //金额
    private BigDecimal amount;

    //图片
    private String image;

    private LocalDateTime createTime;
}

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    ⑵. Mapper

    新建 src/main/java/com/reggie/mapper/ShoppingCartMapper 接口：

    package com.reggie.mapper;

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

@Mapper
public interface ShoppingCartMapper extends BaseMapper<ShoppingCart> {
}

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    ⑶. Service 接口

    新建 src/main/java/com/reggie/service/ShoppingCartService 类：

    package com.reggie.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.reggie.entity.ShoppingCart;

public interface ShoppingCartService extends IService<ShoppingCart> {
}

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    ⑷. Service 实现类

    新建 src/main/java/com/reggie/service/impl/ShoppingCartServiceImpl 类：

    package com.reggie.service.impl;

import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.reggie.entity.ShoppingCart;
import com.reggie.mapper.ShoppingCartMapper;
import com.reggie.service.ShoppingCartService;
import org.springframework.stereotype.Service;

@Service
public class ShoppingCartServiceImpl extends ServiceImpl<ShoppingCartMapper, ShoppingCart> implements ShoppingCartService {
}

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    3. 控制器

    新建 src/main/java/com/reggie/controller/ShoppingCartController.java 文件：

    package com.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.reggie.common.BaseContext;
import com.reggie.common.R;
import com.reggie.entity.ShoppingCart;
import com.reggie.service.ShoppingCartService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.*;

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

/**
 * 购物车
 */
@RestController
@Slf4j
@RequestMapping("/shoppingCart")
public class ShoppingCartController {

    @Autowired
    private ShoppingCartService shoppingCartService;

    /**
     * 添加购物车
     * @param shoppingCart
     * @return
     */
    @PostMapping("/add")
    public R<ShoppingCart> add(@RequestBody ShoppingCart shoppingCart) {
        log.info("购物车数据：{}", shoppingCart);

        // 设定用户ID，设定当前是哪个用户的购物车数据
        Long currentId = BaseContext.getCurrentId();
        shoppingCart.setUserId(currentId);

        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId, currentId);

        // 判断添加到购物车的是菜品还是套餐
        Long dishId = shoppingCart.getDishId();
        if(dishId != null) {
            // 菜品：添加的菜品是否在购物车中
            queryWrapper.eq(ShoppingCart::getDishId, dishId);
        } else {
            // 套餐：添加的套餐是否在购物车中
            queryWrapper.eq(ShoppingCart::getSetmealId, shoppingCart.getSetmealId());
        }

        // 判断菜品/套餐是否在购物车中
        // SQL: select * from shopping_cart where user_id = ? and dish_id/setmeal_id = ?
        ShoppingCart cartServiceOne = shoppingCartService.getOne(queryWrapper);
        if(cartServiceOne != null) {
            // 如果存在，则直接在购物车中数量 +1
            Integer number = cartServiceOne.getNumber();
            cartServiceOne.setNumber(number + 1);
            shoppingCartService.updateById(cartServiceOne);
        } else {
            // 如果不存在，则添加至购物车，默认数量为 1
            shoppingCart.setNumber(1);
            shoppingCart.setCreateTime(LocalDateTime.now());
            shoppingCartService.save(shoppingCart);
            cartServiceOne = shoppingCart;
        }
        return R.success(cartServiceOne);
    }

    /**
     * 查看购物车
     * @return
     */
    @GetMapping("/list")
    public R<List<ShoppingCart>> list() {
        log.info("查看购物车：");

        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId, BaseContext.getCurrentId());
        queryWrapper.orderByDesc(ShoppingCart::getCreateTime);
        List<ShoppingCart> list = shoppingCartService.list(queryWrapper);

        return R.success(list);
    }

    /**
     * 清空购物车
     * @return
     */
    @DeleteMapping("/clean")
    public R<String> clean() {
        // SQL: delete from shopping_card where user_id = ?
        LambdaQueryWrapper<ShoppingCart> queryWrapper = new LambdaQueryWrapper<>();
        queryWrapper.eq(ShoppingCart::getUserId, BaseContext.getCurrentId());
        shoppingCartService.remove(queryWrapper);

        return R.success("清空购物车成功");
    }
}

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    四、下单

    1. 需求分析

    在这里插入图片描述

    1. 在购物车中点击 【去结算】 按钮，页面跳转到订单确认页面
    2. 在订单确认页面，发送ajax请求，请求服务端获取当前登录用户的默认地址
    3. 在订单确认页面，发送ajax请求，请求服务端获取当前登录用户的购物车数据
    4. 在订单确认页面点击 【去支付】 按钮，发送ajax请求，请求服务端完成下单操作


    2. 结构搭建

    ⑴. 实体类

    新建 src/main/java/com/reggie/entity/Orders 类（订单基础信息）：

    package com.reggie.entity;

import lombok.Data;
import java.io.Serializable;
import java.math.BigDecimal;
import java.time.LocalDateTime;

/**
 * 订单
 */
@Data
public class Orders implements Serializable {

    private static final long serialVersionUID = 1L;

    private Long id;

    //订单号
    private String number;

    //订单状态 1待付款，2待派送，3已派送，4已完成，5已取消
    private Integer status;


    //下单用户id
    private Long userId;

    //地址id
    private Long addressBookId;


    //下单时间
    private LocalDateTime orderTime;


    //结账时间
    private LocalDateTime checkoutTime;


    //支付方式 1微信，2支付宝
    private Integer payMethod;


    //实收金额
    private BigDecimal amount;

    //备注
    private String remark;

    //用户名
    private String userName;

    //手机号
    private String phone;

    //地址
    private String address;

    //收货人
    private String consignee;
}

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    新建 src/main/java/com/reggie/entity/OrderDetail 类（订单详情 - 关联菜品）：

    package com.reggie.entity;

import com.baomidou.mybatisplus.annotation.IdType;
import com.baomidou.mybatisplus.annotation.TableId;
import lombok.Data;
import java.io.Serializable;
import java.math.BigDecimal;

/**
 * 订单明细
 */
@Data
public class OrderDetail implements Serializable {

    private static final long serialVersionUID = 1L;

    private Long id;

    //名称
    private String name;

    //订单id
    private Long orderId;


    //菜品id
    private Long dishId;


    //套餐id
    private Long setmealId;


    //口味
    private String dishFlavor;


    //数量
    private Integer number;

    //金额
    private BigDecimal amount;

    //图片
    private String image;
}

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    ⑵. Mapper

    新建 src/main/java/com/reggie/mapper/OrderMapper 接口：

    package com.reggie.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.reggie.entity.Orders;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface OrderMapper extends BaseMapper<Orders> {
}

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    新建 src/main/java/com/reggie/mapper/OrderDetailMapper 接口：

    package com.reggie.mapper;

import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.reggie.entity.OrderDetail;
import org.apache.ibatis.annotations.Mapper;

@Mapper
public interface OrderDetailMapper extends BaseMapper<OrderDetail> {
}

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    ⑶. Service 接口

    新建 src/main/java/com/reggie/service/OrderService 类：

    package com.reggie.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.reggie.entity.Orders;

public interface OrderService extends IService<Orders> {

    /**
     * 用户下单
     * @param orders
     */
    public void submit(Orders orders);
}

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    新建 src/main/java/com/reggie/service/OrderDetailService 类：

    package com.reggie.service;

import com.baomidou.mybatisplus.extension.service.IService;
import com.reggie.entity.OrderDetail;

public interface OrderDetailService extends IService<OrderDetail> {
}

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    ⑷. Service 实现类

    新建 src/main/java/com/reggie/service/impl/OrderServiceImpl 类：

    package com.reggie.service.impl;

import ...

@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {
}

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    新建 src/main/java/com/reggie/service/impl/ShoppingCartServiceImpl 类：

    package com.reggie.service.impl;

import com.baomidou.mybatisplus.extension.service.IService;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.reggie.entity.OrderDetail;
import com.reggie.mapper.OrderDetailMapper;
import com.reggie.service.OrderDetailService;
import org.springframework.stereotype.Service;

@Service
public class OrderServiceDetailImpl extends ServiceImpl<OrderDetailMapper, OrderDetail> implements OrderDetailService {
}

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    3. 编码实现

    ⑴. 控制器（Orders）

    新建 src/main/java/com/reggie/controller/OrderController.java 文件：

    package com.reggie.controller;

import com.reggie.common.R;
import com.reggie.entity.Orders;
import com.reggie.service.OrderService;
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;


/**
 * 订单
 */
@Slf4j
@RestController
@RequestMapping("/order")
public class OrderController {

    @Autowired
    private OrderService orderService;

    /**
     * 用户下单
     * @param orders
     * @return
     */
    @PostMapping("/submit")
    public R<String> submit(@RequestBody Orders orders){
        log.info("订单数据：{}",orders);
        orderService.submit(orders);
        return R.success("下单成功");
    }
}

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    ⑵. 业务层接口

    新建 src/main/java/com/reggie/service/impl/OrderServiceImpl 类：

    package com.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.core.toolkit.IdWorker;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.reggie.common.BaseContext;
import com.reggie.common.CustomException;
import com.reggie.entity.*;
import com.reggie.mapper.OrderMapper;
import com.reggie.service.*;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.List;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.stream.Collectors;

@Service
public class OrderServiceImpl extends ServiceImpl<OrderMapper, Orders> implements OrderService {

    @Autowired
    private ShoppingCartService shoppingCartService;

    @Autowired
    private UserService userService;

    @Autowired
    private AddressBookService addressBookService;

    @Autowired
    private OrderDetailService orderDetailService;

    /**
     * 用户下单
     * @param orders
     */
    @Transactional
    public void submit(Orders orders) {
        //获得当前用户id
        Long userId = BaseContext.getCurrentId();

        //查询当前用户的购物车数据
        LambdaQueryWrapper<ShoppingCart> wrapper = new LambdaQueryWrapper<>();
        wrapper.eq(ShoppingCart::getUserId,userId);
        List<ShoppingCart> shoppingCarts = shoppingCartService.list(wrapper);

        if(shoppingCarts == null || shoppingCarts.size() == 0){
            throw new CustomException("购物车为空，不能下单");
        }

        //查询用户数据
        User user = userService.getById(userId);

        //查询地址数据
        Long addressBookId = orders.getAddressBookId();
        AddressBook addressBook = addressBookService.getById(addressBookId);
        if(addressBook == null){
            throw new CustomException("用户地址信息有误，不能下单");
        }

        long orderId = IdWorker.getId();//订单号

        AtomicInteger amount = new AtomicInteger(0);

        List<OrderDetail> orderDetails = shoppingCarts.stream().map((item) -> {
            OrderDetail orderDetail = new OrderDetail();
            orderDetail.setOrderId(orderId);
            orderDetail.setNumber(item.getNumber());
            orderDetail.setDishFlavor(item.getDishFlavor());
            orderDetail.setDishId(item.getDishId());
            orderDetail.setSetmealId(item.getSetmealId());
            orderDetail.setName(item.getName());
            orderDetail.setImage(item.getImage());
            orderDetail.setAmount(item.getAmount());
            amount.addAndGet(item.getAmount().multiply(new BigDecimal(item.getNumber())).intValue());
            return orderDetail;
        }).collect(Collectors.toList());


        orders.setId(orderId);
        orders.setOrderTime(LocalDateTime.now());
        orders.setCheckoutTime(LocalDateTime.now());
        orders.setStatus(2);
        orders.setAmount(new BigDecimal(amount.get()));//总金额
        orders.setUserId(userId);
        orders.setNumber(String.valueOf(orderId));
        orders.setUserName(user.getName());
        orders.setConsignee(addressBook.getConsignee());
        orders.setPhone(addressBook.getPhone());
        orders.setAddress((addressBook.getProvinceName() == null ? "" : addressBook.getProvinceName())
                + (addressBook.getCityName() == null ? "" : addressBook.getCityName())
                + (addressBook.getDistrictName() == null ? "" : addressBook.getDistrictName())
                + (addressBook.getDetail() == null ? "" : addressBook.getDetail()));
        //向订单表插入数据，一条数据
        this.save(orders);

        //向订单明细表插入数据，多条数据
        orderDetailService.saveBatch(orderDetails);

        //清空购物车数据
        shoppingCartService.remove(wrapper);
    }
}

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    ⑶. 控制器（OrderDetail）

    新建 src/main/java/com/reggie/controller/OrderDetailController.java 文件：

    package com.reggie.controller;

import com.reggie.service.OrderDetailService;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

/**
 * 订单明细
 */
@Slf4j
@RestController
@RequestMapping("/orderDetail")
public class OrderDetailController {

    @Autowired
    private OrderDetailService orderDetailService;
}

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  • 原文地址：https://blog.csdn.net/weixin_45137565/article/details/126489051