【瑞吉外卖】day09：用户地址簿功能、菜品展示、购物车、下单（一）-阿里云开发者社区

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。

1.3 导入功能代码

对于这一类的单表的增删改查，我们已经写过很多了，基本的开发思路都是一样的，那么本小节的用户地址簿管理的增删改查功能，我们就不再一一实现了，基本的代码我们都已经提供了，直接导入进来，做一个测试即可。

对于下面的地址管理的代码，我们可以直接从资料拷贝，也可以直接从下面的讲义中复制。

1). 实体类 AddressBook（直接从课程资料中导入即可）

所属包: com.itheima.reggie.entity

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">annotation</span>.<spanstyle="color:#000000">FieldFill</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">annotation</span>.<spanstyle="color:#000000">TableField</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">lombok</span>.<spanstyle="color:#000000">Data</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">java</span>.<spanstyle="color:#000000">io</span>.<spanstyle="color:#000000">Serializable</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">java</span>.<spanstyle="color:#000000">time</span>.<spanstyle="color:#000000">LocalDateTime</span>;
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 地址簿</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@Data</span><spanstyle="color:#770088">public</span><spanstyle="color:#770088">class</span><spanstyle="color:#0000ff">AddressBook</span><spanstyle="color:#770088">implements</span><spanstyle="color:#000000">Serializable</span> {
<spanstyle="color:#770088">private</span><spanstyle="color:#770088">static</span><spanstyle="color:#770088">final</span><spanstyle="color:#008855">long</span><spanstyle="color:#000000">serialVersionUID</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#116644">1L</span>;
<spanstyle="color:#770088">private</span><spanstyle="color:#008855">Long</span><spanstyle="color:#000000">id</span>;
<spanstyle="color:#aa5500">//用户id</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">Long</span><spanstyle="color:#000000">userId</span>;
<spanstyle="color:#aa5500">//收货人</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">consignee</span>;
<spanstyle="color:#aa5500">//手机号</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">phone</span>;
<spanstyle="color:#aa5500">//性别 0 女 1 男</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">sex</span>;
<spanstyle="color:#aa5500">//省级区划编号</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">provinceCode</span>;
<spanstyle="color:#aa5500">//省级名称</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">provinceName</span>;
<spanstyle="color:#aa5500">//市级区划编号</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">cityCode</span>;
<spanstyle="color:#aa5500">//市级名称</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">cityName</span>;
<spanstyle="color:#aa5500">//区级区划编号</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">districtCode</span>;
<spanstyle="color:#aa5500">//区级名称</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">districtName</span>;
<spanstyle="color:#aa5500">//详细地址</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">detail</span>;
<spanstyle="color:#aa5500">//标签</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">String</span><spanstyle="color:#000000">label</span>;
<spanstyle="color:#aa5500">//是否默认 0 否 1是</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">Integer</span><spanstyle="color:#000000">isDefault</span>;
<spanstyle="color:#aa5500">//创建时间</span><spanstyle="color:#555555">@TableField</span>(<spanstyle="color:#000000">fill</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">FieldFill</span>.<spanstyle="color:#000000">INSERT</span>)
<spanstyle="color:#770088">private</span><spanstyle="color:#000000">LocalDateTime</span><spanstyle="color:#000000">createTime</span>;
<spanstyle="color:#aa5500">//更新时间</span><spanstyle="color:#555555">@TableField</span>(<spanstyle="color:#000000">fill</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">FieldFill</span>.<spanstyle="color:#000000">INSERT_UPDATE</span>)
<spanstyle="color:#770088">private</span><spanstyle="color:#000000">LocalDateTime</span><spanstyle="color:#000000">updateTime</span>;
<spanstyle="color:#aa5500">//创建人</span><spanstyle="color:#555555">@TableField</span>(<spanstyle="color:#000000">fill</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">FieldFill</span>.<spanstyle="color:#000000">INSERT</span>)
<spanstyle="color:#770088">private</span><spanstyle="color:#008855">Long</span><spanstyle="color:#000000">createUser</span>;
<spanstyle="color:#aa5500">//修改人</span><spanstyle="color:#555555">@TableField</span>(<spanstyle="color:#000000">fill</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">FieldFill</span>.<spanstyle="color:#000000">INSERT_UPDATE</span>)
<spanstyle="color:#770088">private</span><spanstyle="color:#008855">Long</span><spanstyle="color:#000000">updateUser</span>;
<spanstyle="color:#aa5500">//是否删除</span><spanstyle="color:#770088">private</span><spanstyle="color:#008855">Integer</span><spanstyle="color:#000000">isDeleted</span>;
}</span></span>

2). Mapper接口 AddressBookMapper（直接从课程资料中导入即可）

所属包: com.itheima.reggie.mapper

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">core</span>.<spanstyle="color:#000000">mapper</span>.<spanstyle="color:#000000">BaseMapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">entity</span>.<spanstyle="color:#000000">AddressBook</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">apache</span>.<spanstyle="color:#000000">ibatis</span>.<spanstyle="color:#000000">annotations</span>.<spanstyle="color:#000000">Mapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">apache</span>.<spanstyle="color:#000000">ibatis</span>.<spanstyle="color:#000000">annotations</span>.<spanstyle="color:#000000">Select</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">java</span>.<spanstyle="color:#000000">util</span>.<spanstyle="color:#000000">List</span>;
<spanstyle="color:#555555">@Mapper</span><spanstyle="color:#770088">public</span><spanstyle="color:#770088">interface</span><spanstyle="color:#0000ff">AddressBookMapper</span><spanstyle="color:#770088">extends</span><spanstyle="color:#000000">BaseMapper</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span> {
}</span></span>

2). Mapper接口 AddressBookMapper（直接从课程资料中导入即可）

所属包: com.itheima.reggie.mapper

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">core</span>.<spanstyle="color:#000000">mapper</span>.<spanstyle="color:#000000">BaseMapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">entity</span>.<spanstyle="color:#000000">AddressBook</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">apache</span>.<spanstyle="color:#000000">ibatis</span>.<spanstyle="color:#000000">annotations</span>.<spanstyle="color:#000000">Mapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">apache</span>.<spanstyle="color:#000000">ibatis</span>.<spanstyle="color:#000000">annotations</span>.<spanstyle="color:#000000">Select</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">java</span>.<spanstyle="color:#000000">util</span>.<spanstyle="color:#000000">List</span>;
<spanstyle="color:#555555">@Mapper</span><spanstyle="color:#770088">public</span><spanstyle="color:#770088">interface</span><spanstyle="color:#0000ff">AddressBookMapper</span><spanstyle="color:#770088">extends</span><spanstyle="color:#000000">BaseMapper</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span> {
}</span></span>

3). 业务层接口 AddressBookService（直接从课程资料中导入即可）

所属包: com.itheima.reggie.service

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">extension</span>.<spanstyle="color:#000000">service</span>.<spanstyle="color:#000000">IService</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">entity</span>.<spanstyle="color:#000000">AddressBook</span>;
<spanstyle="color:#770088">public</span><spanstyle="color:#770088">interface</span><spanstyle="color:#0000ff">AddressBookService</span><spanstyle="color:#770088">extends</span><spanstyle="color:#000000">IService</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span> {
}</span></span>

4). 业务层实现类 AddressBookServiceImpl（直接从课程资料中导入即可）

所属包: com.itheima.reggie.service.impl

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">extension</span>.<spanstyle="color:#000000">service</span>.<spanstyle="color:#000000">impl</span>.<spanstyle="color:#000000">ServiceImpl</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">entity</span>.<spanstyle="color:#000000">AddressBook</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">mapper</span>.<spanstyle="color:#000000">AddressBookMapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">service</span>.<spanstyle="color:#000000">AddressBookService</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">springframework</span>.<spanstyle="color:#000000">stereotype</span>.<spanstyle="color:#000000">Service</span>;
<spanstyle="color:#555555">@Service</span><spanstyle="color:#770088">public</span><spanstyle="color:#770088">class</span><spanstyle="color:#0000ff">AddressBookServiceImpl</span><spanstyle="color:#770088">extends</span><spanstyle="color:#000000">ServiceImpl</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBookMapper</span>, <spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#770088">implements</span><spanstyle="color:#000000">AddressBookService</span> {
}</span></span>

5). 控制层 AddressBookController（直接从课程资料中导入即可）

所属包: com.itheima.reggie.controller

controller主要开发的功能:

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

代码实现如下：

<spanstyle="background-color:#f8f8f8"><spanstyle="color:#333333"><spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">core</span>.<spanstyle="color:#000000">conditions</span>.<spanstyle="color:#000000">query</span>.<spanstyle="color:#000000">LambdaQueryWrapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">baomidou</span>.<spanstyle="color:#000000">mybatisplus</span>.<spanstyle="color:#000000">core</span>.<spanstyle="color:#000000">conditions</span>.<spanstyle="color:#000000">update</span>.<spanstyle="color:#000000">LambdaUpdateWrapper</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">common</span>.<spanstyle="color:#000000">BaseContext</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">common</span>.<spanstyle="color:#000000">R</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">entity</span>.<spanstyle="color:#000000">AddressBook</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">com</span>.<spanstyle="color:#000000">itheima</span>.<spanstyle="color:#000000">reggie</span>.<spanstyle="color:#000000">service</span>.<spanstyle="color:#000000">AddressBookService</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">lombok</span>.<spanstyle="color:#000000">extern</span>.<spanstyle="color:#000000">slf4j</span>.<spanstyle="color:#000000">Slf4j</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">springframework</span>.<spanstyle="color:#000000">beans</span>.<spanstyle="color:#000000">factory</span>.<spanstyle="color:#000000">annotation</span>.<spanstyle="color:#000000">Autowired</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">org</span>.<spanstyle="color:#000000">springframework</span>.<spanstyle="color:#000000">web</span>.<spanstyle="color:#000000">bind</span>.<spanstyle="color:#000000">annotation</span>.<spanstyle="color:#981a1a">*</span>;
<spanstyle="color:#770088">import</span><spanstyle="color:#000000">java</span>.<spanstyle="color:#000000">util</span>.<spanstyle="color:#000000">List</span>;
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 地址簿管理</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@Slf4j</span><spanstyle="color:#555555">@RestController</span><spanstyle="color:#555555">@RequestMapping</span>(<spanstyle="color:#aa1111">"/addressBook"</span>)
<spanstyle="color:#770088">public</span><spanstyle="color:#770088">class</span><spanstyle="color:#0000ff">AddressBookController</span> {
<spanstyle="color:#555555">@Autowired</span><spanstyle="color:#770088">private</span><spanstyle="color:#000000">AddressBookService</span><spanstyle="color:#000000">addressBookService</span>;
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 新增</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@PostMapping</span><spanstyle="color:#770088">public</span><spanstyle="color:#000000">R</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">save</span>(<spanstyle="color:#555555">@RequestBody</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#000000">addressBook</span>) {
<spanstyle="color:#000000">addressBook</span>.<spanstyle="color:#000000">setUserId</span>(<spanstyle="color:#000000">BaseContext</span>.<spanstyle="color:#000000">getCurrentId</span>());
<spanstyle="color:#000000">log</span>.<spanstyle="color:#000000">info</span>(<spanstyle="color:#aa1111">"addressBook:{}"</span>, <spanstyle="color:#000000">addressBook</span>);
<spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">save</span>(<spanstyle="color:#000000">addressBook</span>);
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">success</span>(<spanstyle="color:#000000">addressBook</span>);
    }
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 设置默认地址</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@PutMapping</span>(<spanstyle="color:#aa1111">"default"</span>)
<spanstyle="color:#770088">public</span><spanstyle="color:#000000">R</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">setDefault</span>(<spanstyle="color:#555555">@RequestBody</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#000000">addressBook</span>) {
<spanstyle="color:#000000">log</span>.<spanstyle="color:#000000">info</span>(<spanstyle="color:#aa1111">"addressBook:{}"</span>, <spanstyle="color:#000000">addressBook</span>);
<spanstyle="color:#000000">LambdaUpdateWrapper</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">wrapper</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#770088">new</span><spanstyle="color:#000000">LambdaUpdateWrapper</span><spanstyle="color:#981a1a"><></span>();
<spanstyle="color:#000000">wrapper</span>.<spanstyle="color:#000000">eq</span>(<spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getUserId</span>, <spanstyle="color:#000000">BaseContext</span>.<spanstyle="color:#000000">getCurrentId</span>());
<spanstyle="color:#000000">wrapper</span>.<spanstyle="color:#000000">set</span>(<spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getIsDefault</span>, <spanstyle="color:#116644">0</span>);
<spanstyle="color:#aa5500">//SQL:update address_book set is_default = 0 where user_id = ?</span><spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">update</span>(<spanstyle="color:#000000">wrapper</span>);
<spanstyle="color:#000000">addressBook</span>.<spanstyle="color:#000000">setIsDefault</span>(<spanstyle="color:#116644">1</span>);
<spanstyle="color:#aa5500">//SQL:update address_book set is_default = 1 where id = ?</span><spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">updateById</span>(<spanstyle="color:#000000">addressBook</span>);
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">success</span>(<spanstyle="color:#000000">addressBook</span>);
    }
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 根据id查询地址</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@GetMapping</span>(<spanstyle="color:#aa1111">"/{id}"</span>)
<spanstyle="color:#770088">public</span><spanstyle="color:#000000">R</span><spanstyle="color:#000000">get</span>(<spanstyle="color:#555555">@PathVariable</span><spanstyle="color:#008855">Long</span><spanstyle="color:#000000">id</span>) {
<spanstyle="color:#000000">AddressBook</span><spanstyle="color:#000000">addressBook</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">getById</span>(<spanstyle="color:#000000">id</span>);
<spanstyle="color:#770088">if</span> (<spanstyle="color:#000000">addressBook</span><spanstyle="color:#981a1a">!=</span><spanstyle="color:#221199">null</span>) {
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">success</span>(<spanstyle="color:#000000">addressBook</span>);
        } <spanstyle="color:#770088">else</span> {
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">error</span>(<spanstyle="color:#aa1111">"没有找到该对象"</span>);
        }
    }
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 查询默认地址</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@GetMapping</span>(<spanstyle="color:#aa1111">"default"</span>)
<spanstyle="color:#770088">public</span><spanstyle="color:#000000">R</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">getDefault</span>() {
<spanstyle="color:#000000">LambdaQueryWrapper</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">queryWrapper</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#770088">new</span><spanstyle="color:#000000">LambdaQueryWrapper</span><spanstyle="color:#981a1a"><></span>();
<spanstyle="color:#000000">queryWrapper</span>.<spanstyle="color:#000000">eq</span>(<spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getUserId</span>, <spanstyle="color:#000000">BaseContext</span>.<spanstyle="color:#000000">getCurrentId</span>());
<spanstyle="color:#000000">queryWrapper</span>.<spanstyle="color:#000000">eq</span>(<spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getIsDefault</span>, <spanstyle="color:#116644">1</span>);
<spanstyle="color:#aa5500">//SQL:select * from address_book where user_id = ? and is_default = 1</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#000000">addressBook</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">getOne</span>(<spanstyle="color:#000000">queryWrapper</span>);
<spanstyle="color:#770088">if</span> (<spanstyle="color:#221199">null</span><spanstyle="color:#981a1a">==</span><spanstyle="color:#000000">addressBook</span>) {
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">error</span>(<spanstyle="color:#aa1111">"没有找到该对象"</span>);
        } <spanstyle="color:#770088">else</span> {
<spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">success</span>(<spanstyle="color:#000000">addressBook</span>);
        }
    }
<spanstyle="color:#aa5500">/**</span><span style="color:#aa5500">* 查询指定用户的全部地址</span><span style="color:#aa5500">*/</span><spanstyle="color:#555555">@GetMapping</span>(<spanstyle="color:#aa1111">"/list"</span>)
<spanstyle="color:#770088">public</span><spanstyle="color:#000000">R</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">List</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">>></span><spanstyle="color:#000000">list</span>(<spanstyle="color:#000000">AddressBook</span><spanstyle="color:#000000">addressBook</span>) {
<spanstyle="color:#000000">addressBook</span>.<spanstyle="color:#000000">setUserId</span>(<spanstyle="color:#000000">BaseContext</span>.<spanstyle="color:#000000">getCurrentId</span>());
<spanstyle="color:#000000">log</span>.<spanstyle="color:#000000">info</span>(<spanstyle="color:#aa1111">"addressBook:{}"</span>, <spanstyle="color:#000000">addressBook</span>);
<spanstyle="color:#aa5500">//条件构造器</span><spanstyle="color:#000000">LambdaQueryWrapper</span><spanstyle="color:#981a1a"><</span><spanstyle="color:#000000">AddressBook</span><spanstyle="color:#981a1a">></span><spanstyle="color:#000000">queryWrapper</span><spanstyle="color:#981a1a">=</span><spanstyle="color:#770088">new</span><spanstyle="color:#000000">LambdaQueryWrapper</span><spanstyle="color:#981a1a"><></span>();
<spanstyle="color:#000000">queryWrapper</span>.<spanstyle="color:#000000">eq</span>(<spanstyle="color:#221199">null</span><spanstyle="color:#981a1a">!=</span><spanstyle="color:#000000">addressBook</span>.<spanstyle="color:#000000">getUserId</span>(), <spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getUserId</span>, <spanstyle="color:#000000">addressBook</span>.<spanstyle="color:#000000">getUserId</span>());
<spanstyle="color:#000000">queryWrapper</span>.<spanstyle="color:#000000">orderByDesc</span>(<spanstyle="color:#000000">AddressBook</span>::<spanstyle="color:#000000">getUpdateTime</span>);
<spanstyle="color:#aa5500">//SQL:select * from address_book where user_id = ? order by update_time desc</span><spanstyle="color:#770088">return</span><spanstyle="color:#000000">R</span>.<spanstyle="color:#000000">success</span>(<spanstyle="color:#000000">addressBookService</span>.<spanstyle="color:#000000">list</span>(<spanstyle="color:#000000">queryWrapper</span>));
    }
}</span></span>

1.4 功能测试

代码导入进来，并且去阅读了一下地址管理各个功能的逻辑实现，接下来，我们就可以启动项目，进行一个测试。测试过程中，通过debug断点调试观察服务端程序的执行过程，在浏览器中使用调试工具查看页面和服务端的交互过程和请求响应数据。

1). 新增

填写表单数据，点击保存地址，查看网络请求。

2). 列表查询

当新增地址完成后，页面会再次发送一个请求，来查询该用户的所有地址列表，在界面进行展示。

3). 设置默认

在地址列表页面中，勾选 "设为默认地址" ，此时会发送PUT请求，来设置默认地址。

2. 菜品展示

2.1 需求分析

用户登录成功后跳转到系统首页，在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

按钮，否则显示按钮。

2.2 前端页面分析

在开发代码之前，需要梳理一下前端页面和服务端的交互过程：

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）

该功能在之前的业务开发中，我们都已经实现了。通过请求响应的数据，我们也可以看到数据是可以正确获取到的。

注意：首页加载时，不仅发送请求获取分类列表，还发送了一次ajax请求用于加载购物车数据，而这两次请求必须全部成功，页面才可以正常渲染，而当前购物车列表查询功能还未实现(报404)，所以列表目前并未渲染。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，如下：