基于Springboot外卖系统19：用户地址+默认收货地址

1. 用户地址簿功能

1.1 需求分析

地址簿，指的是移动端消费者用户的地址信息，用户登录成功后可以维护自己的地址信息。

同一个用户可以有多个地址信息，但是只能有一个默认地址。

对于地址簿管理，我们需要实现以下几个功能：、

新增地址

地址列表查询

设置默认地址

编辑地址

删除地址

1.2 数据模型

用户的地址信息会存储在address_book表，即地址簿表中。具体表结构如下：

这里面有一个字段is_default，实际上我们在设置默认地址时，只需要更新这个字段就可以了。

2 功能代码

1). 实体类 AddressBook

package com.itheima.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idprivate 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;
}

2). Mapper接口 AddressBookMapper

package com.itheima.reggie.mapper;import com.baomidou.mybatisplus.core.mapper.BaseMapper;
import com.itheima.reggie.entity.AddressBook;
import org.apache.ibatis.annotations.Mapper;
import org.apache.ibatis.annotations.Select;import java.util.List;@Mapper
public interface AddressBookMapper extends BaseMapper<AddressBook> {}

3). 业务层接口 AddressBookService

package com.itheima.reggie.service;import com.baomidou.mybatisplus.extension.service.IService;
import com.itheima.reggie.entity.AddressBook;public interface AddressBookService extends IService<AddressBook> {}

4). 业务层实现类 AddressBookServiceImpl

package com.itheima.reggie.service.impl;import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.entity.AddressBook;
import com.itheima.reggie.mapper.AddressBookMapper;
import com.itheima.reggie.service.AddressBookService;
import org.springframework.stereotype.Service;@Service
public class AddressBookServiceImpl extends ServiceImpl<AddressBookMapper, AddressBook> implements AddressBookService {}

5). 控制层 AddressBookController

1.逻辑：

A. 新增地址逻辑说明：

需要记录当前是哪个用户的地址(关联当前登录用户)

B. 设置默认地址

每个用户可以有很多地址，但是默认地址只能有一个；

先将该用户所有地址的is_default更新为0 , 然后将当前的设置的默认地址的is_default设置为1

C. 根据ID查询地址

D. 查询默认地址

根据当前登录用户ID 以及 is_default进行查询，查询当前登录用户is_default为1的地址信息

E. 查询指定用户的全部地址

根据当前登录用户ID，查询所有的地址列表

2 代码：

package com.itheima.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.itheima.reggie.common.BaseContext;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.AddressBook;
import com.itheima.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;/*** 地址簿管理*/
@Slf4j
@RestController
@RequestMapping("/addressBook")
public class AddressBookController {@Autowiredprivate AddressBookService addressBookService;/*** 新增*/@PostMappingpublic 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 = 1AddressBook 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 descreturn R.success(addressBookService.list(queryWrapper));}
}