7. 项目开发

7.4 移动端后端开发

7.4.1 项目初始配置

7.4.1.1 SpringBoot配置

1. 创建application.yml文件

在web-app模块的src/main/resources目录下创建application.yml配置文件，内容如下：

server:port: 8081

2. 创建SpringBoot启动类

在web-app模块下创建com.atguigu.lease.AppWebApplication类，内容如下：

@SpringBootApplication
public class AppWebApplication {public static void main(String[] args) {SpringApplication.run(AppWebApplication.class);}
}

7.4.1.2 Mybatis-Plus配置

在web-admin模块的application.yml文件增加如下内容：

spring:datasource:type: com.zaxxer.hikari.HikariDataSourceurl: jdbc:mysql://<hostname>:<port>/<database>?useUnicode=true&characterEncoding=utf-8&useSSL=false&allowPublicKeyRetrieval=true&serverTimezone=GMT%2b8username: <username>password: <password>hikari:connection-test-query: SELECT 1 # 自动检测连接connection-timeout: 60000 #数据库连接超时时间,默认30秒idle-timeout: 500000 #空闲连接存活最大时间，默认600000（10分钟）max-lifetime: 540000 #此属性控制池中连接的最长生命周期，值0表示无限生命周期，默认1800000即30分钟maximum-pool-size: 12 #连接池最大连接数，默认是10minimum-idle: 10 #最小空闲连接数量pool-name: SPHHikariPool # 连接池名称jackson:time-zone: GMT+8#用于打印框架生成的sql语句，便于调试
mybatis-plus:configuration:log-impl: org.apache.ibatis.logging.stdout.StdOutImpl

注意：需根据实际情况修改hostname、port、database、username、password。

7.4.1.3 Knife4j配置

1. 配置类

在web-app模块下创建com.atguigu.lease.web.app.custom.config.Knife4jConfiguration类，内容如下：

@Configuration
public class Knife4jConfiguration {@Beanpublic OpenAPI customOpenAPI() {return new OpenAPI().info(new Info().title("APP接口").version("1.0").description("用户端APP接口").termsOfService("http://doc.xiaominfo.com").license(new License().name("Apache 2.0").url("http://doc.xiaominfo.com")));}@Beanpublic GroupedOpenApi loginAPI() {return GroupedOpenApi.builder().group("登录信息").pathsToMatch("/app/login/**", "/app/info").build();}@Beanpublic GroupedOpenApi personAPI() {return GroupedOpenApi.builder().group("个人信息").pathsToMatch("/app/history/**","/app/appointment/**","/app/agreement/**").build();}@Beanpublic GroupedOpenApi lookForRoomAPI() {return GroupedOpenApi.builder().group("找房信息").pathsToMatch("/app/apartment/**","/app/room/**","/app/payment/**","/app/region/**","/app/term/**").build();}
}

2. application.yml配置文件

在application.yml文件中增加如下配置：

springdoc:default-flat-param-object: true

7.2.1.4 导入基础代码

导入的代码和目标位置如下：

导入代码	模块	包名/路径	说明
mapper接口	web-app	com.atguigu.lease.web.app.mapper	略
mapper xml	web-app	src/main/resources/mapper	略
service	web-app	com.atguigu.lease.web.app.service	略
serviceImpl	web-app	com.atguigu.lease.web.app.service.impl	略

7.2.1.5 导入接口定义代码

需要导入的代码和目标位置如下：

导入代码	模块	包名/路径	说明
controller	web-app	com.atguigu.lease.web.app.controller	略
vo	web-app	com.atguigu.lease.web.app.vo	View Object，用于封装或定义接口接受及返回的数据结构

7.2.1.6 启动项目

由于common模块中配置了MinioClient这个Bean，并且web-app模块依赖于common模块，因此在启动AppWebApplication时，SpringBoot会创建一个MinioClient实例，但是由于web-app模块的application.yml文件中并未提供MinioClient所需的参数（web-app模块暂时不需要使用MinioClient），因此MinioClient实例的创建会失败。

为解决该问题，可以为MinioClient的配置类增加一个条件注解@ConditionalOnProperty，如下，该注解表达的含义是只有当minio.endpoint属性存在时，该配置类才会生效。

@Configuration
@EnableConfigurationProperties(MinioProperties.class)
@ConditionalOnProperty(name = "minio.endpoint")
public class MinioConfiguration {@Autowiredprivate MinioProperties properties;@Beanpublic MinioClient minioClient() {return MinioClient.builder().endpoint(properties.getEndpoint()).credentials(properties.getAccessKey(), properties.getSecretKey()).build();}
}

完成上述配置后，便可启动SpringBoot项目，并访问接口文档了，Knife4j文档的url为：http://localhost:8081/doc.html

7.4.2 登录管理

7.4.2.1 登陆流程

移动端的具体登录流程如下图所示

根据上述登录流程，可分析出，登录管理共需三个接口，分别是获取短信验证码、登录、查询登录用户的个人信息。除此之外，同样需要编写HandlerInterceptor来为所有受保护的接口增加验证JWT的逻辑。

7.4.2.2 接口开发

首先在LoginController中注入LoginService，如下

@RestController
@Tag(name = "登录管理")
@RequestMapping("/app/")
public class LoginController {@Autowiredprivate LoginService service;
}

1. 获取短信验证码

该接口需向登录手机号码发送短信验证码，各大云服务厂商都提供短信服务，本项目使用阿里云完成短信验证码功能，下面介绍具体配置。

• 配置短信服务

  • 开通短信服务

    • 在阿里云官网，注册阿里云账号，并按照指引，完成实名认证（不认证，无法购买服务）

    • 找到短信服务，选择免费开通

    • 进入短信服务控制台，选择快速学习和测试

    • 找到发送测试下的API发送测试，绑定测试用的手机号（只有绑定的手机号码才能收到测试短信），然后配置短信签名和短信模版，这里选择**[专用]测试签名/模版**。

      

  • 创建AccessKey

    云账号 AccessKey 是访问阿里云 API 的密钥，没有AccessKey无法调用短信服务。点击页面右上角的头像，选择AccessKey管理，然后创建AccessKey。

    

• 配置所需依赖

  如需调用阿里云的短信服务，需使用其提供的SDK，具体可参考官方文档。

  在common模块的pom.xml文件中增加如下内容

  <dependency><groupId>com.aliyun</groupId><artifactId>dysmsapi20170525</artifactId>
  </dependency>
  

• 配置发送短信客户端

  • 在application.yml中增加如下内容

    aliyun:sms:access-key-id: <access-key-id>access-key-secret: <access-key-secret>endpoint: dysmsapi.aliyuncs.com
    

    注意：

    上述access-key-id、access-key-secret需根据实际情况进行修改。

  • 在common模块中创建com.atguigu.lease.common.sms.AliyunSMSProperties类，内容如下

    @Data
    @ConfigurationProperties(prefix = "aliyun.sms")
    public class AliyunSMSProperties {private String accessKeyId;private String accessKeySecret;private String endpoint;
    }
    

  • 在common模块中创建com.atguigu.lease.common.sms.AliyunSmsConfiguration类，内容如下

    @Configuration
    @EnableConfigurationProperties(AliyunSMSProperties.class)
    @ConditionalOnProperty(name = "aliyun.sms.endpoint")
    public class AliyunSMSConfiguration {@Autowiredprivate AliyunSMSProperties properties;@Beanpublic Client smsClient() {Config config = new Config();config.setAccessKeyId(properties.getAccessKeyId());config.setAccessKeySecret(properties.getAccessKeySecret());config.setEndpoint(properties.getEndpoint());try {return new Client(config);} catch (Exception e) {throw new RuntimeException(e);}}
    }
    

• 配置Redis连接参数

  spring: data:redis:host: 192.168.10.101port: 6379database: 0
  

• 编写Controller层逻辑

  在LoginController中增加如下内容

  @GetMapping("login/getCode")
  @Operation(summary = "获取短信验证码")
  public Result getCode(@RequestParam String phone) {service.getSMSCode(phone);return Result.ok();
  }
  

• 编写Service层逻辑

  • 编写发送短信逻辑

    • 在SmsService中增加如下内容

      void sendCode(String phone, String verifyCode);
      

    • 在SmsServiceImpl中增加如下内容

      @Override
      public void sendCode(String phone, String code) {SendSmsRequest smsRequest = new SendSmsRequest();smsRequest.setPhoneNumbers(phone);smsRequest.setSignName("阿里云短信测试");smsRequest.setTemplateCode("SMS_154950909");smsRequest.setTemplateParam("{\"code\":\"" + code + "\"}");try {client.sendSms(smsRequest);} catch (Exception e) {throw new RuntimeException(e);}
      }
      

  • 编写生成随机验证码逻辑

    在common模块中创建com.atguigu.lease.common.utils.VerifyCodeUtil类，内容如下

    public class VerifyCodeUtil {public static String getVerifyCode(int length) {StringBuilder builder = new StringBuilder();Random random = new Random();for (int i = 0; i < length; i++) {builder.append(random.nextInt(10));}return builder.toString();}
    }
    

  • 编写获取短信验证码逻辑

    • 在LoginServcie中增加如下内容

      void getSMSCode(String phone);
      

    • 在LoginServiceImpl中增加如下内容

      @Override
      public void getSMSCode(String phone) {//1. 检查手机号码是否为空if (!StringUtils.hasText(phone)) {throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);}//2. 检查Redis中是否已经存在该手机号码的keyString key = RedisConstant.APP_LOGIN_PREFIX + phone;boolean hasKey = redisTemplate.hasKey(key);if (hasKey) {//若存在，则检查其存在的时间Long expire = redisTemplate.getExpire(key, TimeUnit.SECONDS);if (RedisConstant.APP_LOGIN_CODE_TTL_SEC - expire < RedisConstant.APP_LOGIN_CODE_RESEND_TIME_SEC) {//若存在时间不足一分钟，响应发送过于频繁throw new LeaseException(ResultCodeEnum.APP_SEND_SMS_TOO_OFTEN);}}//3.发送短信，并将验证码存入RedisString verifyCode = VerifyCodeUtil.getVerifyCode(6);smsService.sendCode(phone, verifyCode);redisTemplate.opsForValue().set(key, verifyCode, RedisConstant.APP_LOGIN_CODE_TTL_SEC, TimeUnit.SECONDS);
      }
      

      注意：

      需要注意防止频繁发送短信。

2. 登录和注册接口

• 登录注册校验逻辑

  • 前端发送手机号码phone和接收到的短信验证码code到后端。
  • 首先校验phone和code是否为空，若为空，直接响应手机号码为空或者验证码为空，若不为空则进入下步判断。
  • 根据phone从Redis中查询之前保存的验证码，若查询结果为空，则直接响应验证码已过期 ，若不为空则进入下一步判断。
  • 比较前端发送的验证码和从Redis中查询出的验证码，若不同，则直接响应验证码错误，若相同则进入下一步判断。
  • 使用phone从数据库中查询用户信息，若查询结果为空，则创建新用户，并将用户保存至数据库，然后进入下一步判断。
  • 判断用户是否被禁用，若被禁，则直接响应账号被禁用，否则进入下一步。
  • 创建JWT并响应给前端。

• 接口实现

  • 编写Controller层逻辑

    在LoginController中增加如下内容

    @PostMapping("login")
    @Operation(summary = "登录")
    public Result<String> login(LoginVo loginVo) {String token = service.login(loginVo);return Result.ok(token);
    }
    

  • 编写Service层逻辑

    • 在LoginService中增加如下内容

      String login(LoginVo loginVo);
      

    • 在LoginServiceImpl总增加如下内容

      @Override
      public String login(LoginVo loginVo) {//1.判断手机号码和验证码是否为空if (!StringUtils.hasText(loginVo.getPhone())) {throw new LeaseException(ResultCodeEnum.APP_LOGIN_PHONE_EMPTY);}if (!StringUtils.hasText(loginVo.getCode())) {throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EMPTY);}//2.校验验证码String key = RedisConstant.APP_LOGIN_PREFIX + loginVo.getPhone();String code = redisTemplate.opsForValue().get(key);if (code == null) {throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_EXPIRED);}if (!code.equals(loginVo.getCode())) {throw new LeaseException(ResultCodeEnum.APP_LOGIN_CODE_ERROR);}//3.判断用户是否存在,不存在则注册（创建用户）LambdaQueryWrapper<UserInfo> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(UserInfo::getPhone, loginVo.getPhone());UserInfo userInfo = userInfoService.getOne(queryWrapper);if (userInfo == null) {userInfo = new UserInfo();userInfo.setPhone(loginVo.getPhone());userInfo.setStatus(BaseStatus.ENABLE);userInfo.setNickname("用户-"+loginVo.getPhone().substring(6));userInfoService.save(userInfo);}//4.判断用户是否被禁if (userInfo.getStatus().equals(BaseStatus.DISABLE)) {throw new LeaseException(ResultCodeEnum.APP_ACCOUNT_DISABLED_ERROR);}//5.创建并返回TOKENreturn JwtUtil.createToken(userInfo.getId(), loginVo.getPhone());
      }
      

  • 编写HandlerInterceptor

    • 编写AuthenticationInterceptor

      在web-app模块创建com.atguigu.lease.web.app.custom.interceptor.AuthenticationInterceptor，内容如下

      @Component
      public class AuthenticationInterceptor implements HandlerInterceptor {@Overridepublic boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {String token = request.getHeader("access-token");Claims claims = JwtUtil.parseToken(token);Long userId = claims.get("userId", Long.class);String username = claims.get("username", String.class);LoginUserHolder.setLoginUser(new LoginUser(userId, username));return true;}@Overridepublic void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {LoginUserHolder.clear();}
      }
      

    • 注册AuthenticationInterceptor

      在web-app模块创建com.atguigu.lease.web.app.custom.config.WebMvcConfiguration，内容如下

      @Configuration
      public class WebMvcConfiguration implements WebMvcConfigurer {@Autowiredprivate AuthenticationInterceptor authenticationInterceptor;@Overridepublic void addInterceptors(InterceptorRegistry registry) {registry.addInterceptor(this.authenticationInterceptor).addPathPatterns("/app/**").excludePathPatterns("/app/login/**");}
      }
      

• Knife4j增加认证相关配置

  在增加上述拦截器后，为方便继续调试其他接口，可以获取一个长期有效的Token，将其配置到Knife4j的全局参数中。

3.查询登录用户的个人信息

• 查看响应数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.user.UserInfoVo，内容如下

  @Schema(description = "用户基本信息")
  @Data
  @AllArgsConstructor
  public class UserInfoVo {@Schema(description = "用户昵称")private String nickname;@Schema(description = "用户头像")private String avatarUrl;
  }
  

• 编写Controller层逻辑

  在LoginController中增加如下内容

  @GetMapping("info")
  @Operation(summary = "获取登录用户信息")
  public Result<UserInfoVo> info() {UserInfoVo info = service.getUserInfoById(LoginUserHolder.getLoginUser().getUserId());return Result.ok(info);
  }
  

• 编写Service层逻辑

  • 在LoginService中增加如下内容

    UserInfoVo getUserInfoId(Long id);
    

  • 在LoginServiceImpl中增加如下内容

    @Override
    public UserInfoVo getUserInfoId(Long id) {UserInfo userInfo = userInfoService.getById(id);return new UserInfoVo(userInfo.getNickname(), userInfo.getAvatarUrl());
    }
    

7.4.3 找房

7.4.3.1 地区信息

对于找房模块，地区信息共需三个接口，分别是查询省份列表、根据省份ID查询城市列表、根据城市ID查询区县列表，具体实现如下

在RegionController中增加如下内容

@Tag(name = "地区信息")
@RestController
@RequestMapping("/app/region")
public class RegionController {@Autowiredprivate ProvinceInfoService provinceInfoService;@Autowiredprivate CityInfoService cityInfoService;@Autowiredprivate DistrictInfoService districtInfoService;@Operation(summary="查询省份信息列表")@GetMapping("province/list")public Result<List<ProvinceInfo>> listProvince(){List<ProvinceInfo> list = provinceInfoService.list();return Result.ok(list);}@Operation(summary="根据省份id查询城市信息列表")@GetMapping("city/listByProvinceId")public Result<List<CityInfo>> listCityInfoByProvinceId(@RequestParam Long id){LambdaQueryWrapper<CityInfo> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(CityInfo::getProvinceId,id);List<CityInfo> list = cityInfoService.list(queryWrapper);return Result.ok(list);}@GetMapping("district/listByCityId")@Operation(summary="根据城市id查询区县信息")public Result<List<DistrictInfo>> listDistrictInfoByCityId(@RequestParam Long id){LambdaQueryWrapper<DistrictInfo> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(DistrictInfo::getCityId,id);List<DistrictInfo> list = districtInfoService.list(queryWrapper);return Result.ok(list);}
}

7.4.3.2 支付方式

对于找房模块，支付方式共需一个接口，即获取全部支付方式列表，具体实现如下

在PaymentTypeController中增加如下内容

@Tag(name = "支付方式接口")
@RestController
@RequestMapping("/app/payment")
public class PaymentTypeController {@Autowiredprivate PaymentTypeService service;@Operation(summary = "获取全部支付方式列表")@GetMapping("list")public Result<List<PaymentType>> list() {List<PaymentType> list = service.list();return Result.ok(list);}
}

7.4.3.4 房间信息

房间信息共需三个接口，分别是根据条件分页查询房间列表、根据ID查询房间详细信息、根据公寓ID分页查询房间列表，下面逐一实现

首先在RoomController中注入RoomInfoService，如下

@Tag(name = "房间信息")
@RestController
@RequestMapping("/app/room")
public class RoomController {@AutowiredRoomInfoService roomInfoService;
}

1. 根据条件分页查询房间列表

• 查看请求和响应的数据结构

  • 请求数据结构

    • current和size为分页相关参数，分别表示当前所处页面和每个页面的记录数。

    • RoomQueryVo为房间的查询条件，详细结构如下：

      @Data
      @Schema(description = "房间查询实体")
      public class RoomQueryVo {@Schema(description = "省份Id")private Long provinceId;@Schema(description = "城市Id")private Long cityId;@Schema(description = "区域Id")private Long districtId;@Schema(description = "最小租金")private BigDecimal minRent;@Schema(description = "最大租金")private BigDecimal maxRent;@Schema(description = "支付方式")private Long paymentTypeId;@Schema(description = "价格排序方式", allowableValues = {"desc", "asc"})private String orderType;}
      

  • 响应数据结构

    单个房间信息记录可查看com.atguigu.lease.web.app.vo.room.RoomItemVo，内容如下：

    @Schema(description = "APP房间列表实体")
    @Data
    public class RoomItemVo {@Schema(description = "房间id")private Long id;@Schema(description = "房间号")private String roomNumber;@Schema(description = "租金（元/月）")private BigDecimal rent;@Schema(description = "房间图片列表")private List<GraphVo> graphVoList;@Schema(description = "房间标签列表")private List<LabelInfo> labelInfoList;@Schema(description = "房间所属公寓信息")private ApartmentInfo apartmentInfo;
    }
    

• 编写Controller层逻辑

  在RoomController中增加如下内容

  @Operation(summary = "分页查询房间列表")
  @GetMapping("pageItem")
  public Result<IPage<RoomItemVo>> pageItem(@RequestParam long current, @RequestParam long size, RoomQueryVo queryVo) {Page<RoomItemVo> page = new Page<>(current, size);IPage<RoomItemVo> list = roomInfoService.pageRoomItemByQuery(page, queryVo);return Result.ok(list);
  }
  

• 编写Service层逻辑

  • 在RoomInfoService中增加如下内容

    IPage<RoomItemVo> pageRoomItemByQuery(Page<RoomItemVo> page, RoomQueryVo queryVo);
    

  • 在RoomInfoServiceImpl中增加如下内容

    @Override
    public IPage<RoomItemVo> pageRoomItemByQuery(Page<RoomItemVo> page, RoomQueryVo queryVo) {return roomInfoMapper.pageRoomItemByQuery(page, queryVo);
    }
    

• 编写Mapper层逻辑

  • 在RoomInfoMapper中增加如下内容

    IPage<RoomItemVo> pageRoomItemByQuery(Page<RoomItemVo> page, RoomQueryVo queryVo);
    

  • 在RoomInfoMapper中增加如下内容

    <!-- result map -->
    <resultMap id="RoomItemVoMap" type="com.atguigu.lease.web.app.vo.room.RoomItemVo" autoMapping="true"><id column="id" property="id"/><!--映射公寓信息--><association property="apartmentInfo" javaType="com.atguigu.lease.model.entity.ApartmentInfo"autoMapping="true"><id column="id" property="id"/></association><!--映射图片列表--><collection property="graphVoList" ofType="com.atguigu.lease.web.app.vo.graph.GraphVo"select="selectGraphVoListByRoomId" column="id"/><!--映射标签列表--><collection property="labelInfoList" ofType="com.atguigu.lease.model.entity.LabelInfo"select="selectLabelInfoListByRoomId" column="id"/>
    </resultMap><!-- 根据条件查询房间列表 -->
    <select id="pageItem" resultMap="RoomItemVoMap">selectri.id,ri.room_number,ri.rent,ai.id apartment_id,ai.name,ai.introduction,ai.district_id,ai.district_name,ai.city_id,ai.city_name,ai.province_id,ai.province_name,ai.address_detail,ai.latitude,ai.longitude,ai.phone,ai.is_releasefrom room_info rileft join apartment_info ai on ri.apartment_id = ai.id and ai.is_deleted = 0<where>ri.is_deleted = 0and ri.is_release = 1and ri.id not in(select room_idfrom lease_agreementwhere is_deleted = 0and status in(2,5))<if test="queryVo.provinceId != null">and ai.province_id = #{queryVo.provinceId}</if><if test="queryVo.cityId != null">and ai.city_id = #{queryVo.cityId}</if><if test="queryVo.districtId != null">and ai.district_id = #{queryVo.districtId}</if><if test="queryVo.minRent != null and queryVo.maxRent != null">and (ri.rent &gt;= #{queryVo.minRent} and ri.rent &lt;= #{queryVo.maxRent})</if><if test="queryVo.paymentTypeId != null">and ri.id in (selectroom_idfrom room_payment_typewhere is_deleted = 0and payment_type_id = #{queryVo.paymentTypeId})</if></where><if test="queryVo.orderType == 'desc' or queryVo.orderType == 'asc'">order by ri.rent ${queryVo.orderType}</if>
    </select><!-- 根据房间ID查询图片列表 -->
    <select id="selectGraphVoListByRoomId" resultType="com.atguigu.lease.web.app.vo.graph.GraphVo">select id,name,item_type,item_id,urlfrom graph_infowhere is_deleted = 0and item_type = 2and item_id = #{id}
    </select><!-- 根据公寓ID查询标签列表 -->
    <select id="selectLabelInfoListByRoomId" resultType="com.atguigu.lease.model.entity.LabelInfo">select id,type,namefrom label_infowhere is_deleted = 0and id in (select label_idfrom room_labelwhere is_deleted = 0and room_id = #{id})
    </select>
    

    知识点：

    • xml文件<和>的转义

      由于xml文件中的<和>是特殊符号，需要转义处理。

      原符号	转义符号
      <	&lt;
      >	&gt;

    • Mybatis-Plus分页插件注意事项

      使用Mybatis-Plus的分页插件进行分页查询时，如果结果需要使用<collection>进行映射，只能使用**嵌套查询（Nested Select for Collection），而不能使用嵌套结果映射（Nested Results for Collection）**。

      嵌套查询和嵌套结果映射是Collection映射的两种方式，下面通过一个案例进行介绍

      例如有room_info和graph_info两张表，其关系为一对多，如下

      

      现需要查询房间列表及其图片信息，期望返回的结果如下

      [{"id": 1,"number": 201,"rent": 2000,"graphList": [{"id": 1,"url": "http://","roomId": 1},{"id": 2,"url": "http://","roomId": 1}]},{"id": 2,"number": 202,"rent": 3000,"graphList": [{"id": 3,"url": "http://","roomId": 2},{"id": 4,"url": "http://","roomId": 2}]}
      ]
      

      为得到上述结果，可使用以下两种方式

      • 嵌套结果映射

        <select id="selectRoomPage" resultMap="RoomPageMap">select ri.id room_id,ri.number,ri.rent,gi.id graph_id,gi.url,gi.room_idfrom room_info rileft join graph_info gi on ri.id=gi.room_id
        </select><resultMap id="RoomPageMap" type="RoomInfoVo" autoMapping="true"><id column="room_id" property="id"/><collection property="graphInfoList" ofType="GraphInfo" autoMapping="true"><id column="graph_id" property="id"/></collection>
        </resultMap>
        

        这种方式的执行原理如下图所示

      

      • 嵌套查询

        <select id="selectRoomPage" resultMap="RoomPageMap">select id,number,rentfrom room_info
        </select><resultMap id="RoomPageMap" type="RoomInfoVo" autoMapping="true"><id column="id" property="id"/><collection property="graphInfoList" ofType="GraphInfo" select="selectGraphByRoomId" 				 	column="id"/>
        </resultMap><select id="selectGraphByRoomId" resultType="GraphInfo">select id,url,room_idfrom graph_infowhere room_id = #{id}
        </select>
        

        这种方法使用两个独立的查询语句来获取一对多关系的数据。首先，Mybatis会执行主查询来获取room_info列表，然后对于每个room_info，Mybatis都会执行一次子查询来获取其对应的graph_info。

      

      若现在使用MybatisPlus的分页插件进行分页查询，假如查询的内容是第1页，每页2条记录，则上述两种方式的查询结果分别是

      • 嵌套结果映射

        

      • 嵌套查询

        

      显然嵌套结果映射的分页逻辑是存在问题的。

2. 根据ID查询房间详细信息

• 查看响应数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.room.RoomDetailVo，内容如下

  @Data
  @Schema(description = "APP房间详情")
  public class RoomDetailVo extends RoomInfo {@Schema(description = "所属公寓信息")private ApartmentItemVo apartmentItemVo;@Schema(description = "图片列表")private List<GraphVo> graphVoList;@Schema(description = "属性信息列表")private List<AttrValueVo> attrValueVoList;@Schema(description = "配套信息列表")private List<FacilityInfo> facilityInfoList;@Schema(description = "标签信息列表")private List<LabelInfo> labelInfoList;@Schema(description = "支付方式列表")private List<PaymentType> paymentTypeList;@Schema(description = "杂费列表")private List<FeeValueVo> feeValueVoList;@Schema(description = "租期列表")private List<LeaseTerm> leaseTermList;}
  

• 编写Controller层逻辑

  在RoomController中增加如下内容

  @Operation(summary = "根据id获取房间的详细信息")
  @GetMapping("getDetailById")
  public Result<RoomDetailVo> getDetailById(@RequestParam Long id) {RoomDetailVo roomInfo = service.getDetailById(id);return Result.ok(roomInfo);
  }
  

• 编写查询房间信息逻辑

  • 编写Service层逻辑

    • 在RoomInfoService中增加如下内容

      RoomDetailVo getDetailById(Long id);
      

    • 在RoomInfoServiceImpl中增加如下内容

      @Override
      public RoomDetailVo getDetailById(Long id) {//1.查询房间信息RoomInfo roomInfo = roomInfoMapper.selectById(id);if (roomInfo == null) {return null;}//2.查询图片List<GraphVo> graphVoList = graphInfoMapper.selectListByItemTypeAndId(ItemType.ROOM, id);//3.查询租期List<LeaseTerm> leaseTermList = leaseTermMapper.selectListByRoomId(id);//4.查询配套List<FacilityInfo> facilityInfoList = facilityInfoMapper.selectListByRoomId(id);//5.查询标签List<LabelInfo> labelInfoList = labelInfoMapper.selectListByRoomId(id);//6.查询支付方式List<PaymentType> paymentTypeList = paymentTypeMapper.selectListByRoomId(id);//7.查询基本属性List<AttrValueVo> attrValueVoList = attrValueMapper.selectListByRoomId(id);//8.查询杂费信息List<FeeValueVo> feeValueVoList = feeValueMapper.selectListByApartmentId(roomInfo.getApartmentId());//9.查询公寓信息ApartmentItemVo apartmentItemVo = apartmentInfoService.selectApartmentItemVoById(roomInfo.getApartmentId());RoomDetailVo roomDetailVo = new RoomDetailVo();BeanUtils.copyProperties(roomInfo, roomDetailVo);roomDetailVo.setApartmentItemVo(apartmentItemVo);roomDetailVo.setGraphVoList(graphVoList);roomDetailVo.setAttrValueVoList(attrValueVoList);roomDetailVo.setFacilityInfoList(facilityInfoList);roomDetailVo.setLabelInfoList(labelInfoList);roomDetailVo.setPaymentTypeList(paymentTypeList);roomDetailVo.setFeeValueVoList(feeValueVoList);roomDetailVo.setLeaseTermList(leaseTermList);return roomDetailVo;
      }
      

  • 编写Mapper层逻辑

    • 编写查询房间图片逻辑

      • 在GraphInfoMapper中增加如下内容

        List<GraphVo> selectListByItemTypeAndId(ItemType itemType, Long id);
        

      • 在GraphInfoMapper.xml增加如下内容

        <select id="selectListByItemTypeAndId" resultType="com.atguigu.lease.web.app.vo.graph.GraphVo">select name,urlfrom graph_infowhere is_deleted = 0and item_type = #{itemType}and item_id = #{id}
        </select>
        

    • 编写查询房间可选租期逻辑

      • 在LeaseTermMapper中增加如下内容

        List<LeaseTerm> selectListByRoomId(Long id);
        

      • 在LeaseTermMapper.xml中增加如下内容

        <select id="selectListByRoomId" resultType="com.atguigu.lease.model.entity.LeaseTerm">select id,month_count,unitfrom lease_termwhere is_deleted = 0and id in (select lease_term_idfrom room_lease_termwhere is_deleted = 0and room_id = #{id})
        </select>
        

    • 编写查询房间配套逻辑

      • 在FacilityInfoMapper中增加如下内容

        List<FacilityInfo> selectListByRoomId(Long id);
        

      • 在FacilityInfoMapper.xml中增加如下内容

        <select id="selectListByRoomId" resultType="com.atguigu.lease.model.entity.FacilityInfo">select id,type,name,iconfrom facility_infowhere is_deleted = 0and id in (select facility_idfrom room_facilitywhere is_deleted = 0and room_id = #{id})
        </select>
        

    • 编写查询房间标签逻辑

      • 在LabelInfoMapper中增加如下内容

        List<LabelInfo> selectListByRoomId(Long id);
        

      • 在LabelInfoMapper.xml中增加如下内容

        <select id="selectListByRoomId" resultType="com.atguigu.lease.model.entity.LabelInfo">select id,type,namefrom label_infowhere is_deleted = 0and id in (select label_idfrom room_labelwhere is_deleted = 0and room_id = #{id})
        </select>
        

    • 编写查询房间可选支付方式逻辑

      • 在PaymentTypeMapper中增加如下内容

        List<PaymentType> selectListByRoomId(Long id);
        

      • 在PaymentTypeMapper.xml中增加如下内容

        <select id="selectListByRoomId" resultType="com.atguigu.lease.model.entity.PaymentType">select id,name,pay_month_count,additional_infofrom payment_typewhere is_deleted = 0and id in (select payment_type_idfrom room_payment_typewhere is_deleted = 0and room_id = #{id})
        </select>
        

    • 编写查询房间属性逻辑

      • 在AttrValueMapper中增加如下内容

        List<AttrValueVo> selectListByRoomId(Long id);
        

      • 在AttrValueMapper.xml中增加如下内容

        <select id="selectListByRoomId" resultType="com.atguigu.lease.web.app.vo.attr.AttrValueVo">select av.id,av.name,av.attr_key_id,ak.name attr_key_namefrom attr_value avleft join attr_key ak on av.attr_key_id = ak.id and ak.is_deleted = 0where av.is_deleted = 0and av.id in (select attr_value_idfrom room_attr_valuewhere is_deleted = 0and room_id = #{id})
        </select>
        

    • 编写查询房间杂费逻辑

      • 在FeeValueMapper中增加如下内容

        List<FeeValueVo> selectListByApartmentId(Long id);
        

      • 在FeeValueMapper.xml中增加如下内容

        <select id="selectListByApartmentId" resultType="com.atguigu.lease.web.app.vo.fee.FeeValueVo">select fv.id,fv.name,fv.unit,fv.fee_key_id,fk.name fee_key_namefrom fee_value fvleft join fee_key fk on fv.fee_key_id = fk.id and fk.is_deleted = 0where fv.is_deleted = 0and fv.id in (select fee_value_idfrom apartment_fee_valuewhere is_deleted = 0and apartment_id = #{id})
        </select>
        

• 编写查询所属公寓信息逻辑

  • 编写Service层逻辑

    在ApartmentInfoService中增加如下内容

    ApartmentItemVo selectApartmentItemVoById(Long id);
    

    在ApartmentInfoServiceImpl中增加如下内容

    @Override
    public ApartmentItemVo selectApartmentItemVoById(Long id) {ApartmentInfo apartmentInfo = apartmentInfoMapper.selectById(id);List<LabelInfo> labelInfoList = labelInfoMapper.selectListByApartmentId(id);List<GraphVo> graphVoList = graphInfoMapper.selectListByItemTypeAndId(ItemType.APARTMENT, id);BigDecimal minRent = roomInfoMapper.selectMinRentByApartmentId(id);ApartmentItemVo apartmentItemVo = new ApartmentItemVo();BeanUtils.copyProperties(apartmentInfo, apartmentItemVo);apartmentItemVo.setGraphVoList(graphVoList);apartmentItemVo.setLabelInfoList(labelInfoList);apartmentItemVo.setMinRent(minRent);return apartmentItemVo;
    }
    

• 编写Mapper层逻辑

  • 编写查询标签信息逻辑

    • 在LabelInfoMapper中增加如下内容

        List<LabelInfo> selectListByApartmentId(Long id);
      

    • 在LabelInfoMapper.xml中增加如下内容

        <select id="selectListByApartmentId" resultType="com.atguigu.lease.model.entity.LabelInfo">select id,type,namefrom label_infowhere is_deleted = 0and id in (select label_idfrom apartment_labelwhere is_deleted = 0and apartment_id = #{id})</select>
      

    • 编写查询公寓最小租金逻辑

      • 在RoomInfoMapper中增加如下内容

        BigDecimal selectMinRentByApartmentId(Long id);
        

      • 在RoomInfoMapper.xml中增加如下内容

        <select id="selectMinRentByApartmentId" resultType="java.math.BigDecimal">select min(rent)from room_infowhere is_deleted = 0and is_release = 1and apartment_id = #{id}
        </select>
        

3.根据公寓ID分页查询房间列表

• 查看请求和响应的数据结构

  • 请求的数据结构

    • current和size为分页相关参数，分别表示当前所处页面和每个页面的记录数。
    • id为公寓ID。

  • 响应的数据结构

    • 查看web-admin模块下的com.atguigu.lease.web.app.vo.room.RoomItemVo，如下

      @Schema(description = "APP房间列表实体")
      @Data
      public class RoomItemVo {@Schema(description = "房间id")private Long id;@Schema(description = "房间号")private String roomNumber;@Schema(description = "租金（元/月）")private BigDecimal rent;@Schema(description = "房间图片列表")private List<GraphVo> graphVoList;@Schema(description = "房间标签列表")private List<LabelInfo> labelInfoList;@Schema(description = "房间所属公寓信息")private ApartmentInfo apartmentInfo;}
      

• 编写Controller层逻辑

  在RoomController中增加如下内容

  @Operation(summary = "根据公寓id分页查询房间列表")
  @GetMapping("pageItemByApartmentId")
  public Result<IPage<RoomItemVo>> pageItemByApartmentId(@RequestParam long current, @RequestParam long size, @RequestParam Long id) {IPage<RoomItemVo> page = new Page<>(current, size);IPage<RoomItemVo> result = service.pageItemByApartmentId(page, id);return Result.ok(result);
  }
  

• 编写Service层逻辑

  在RoomInfoService中增加如下内容

  IPage<RoomItemVo> pageItemByApartmentId(IPage<RoomItemVo> page, Long id);
  

  在RoomInfoServiceImpl中增加如下内容

  @Override
  public IPage<RoomItemVo> pageItemByApartmentId(IPage<RoomItemVo> page, Long id) {return roomInfoMapper.pageItemByApartmentId(page, id);
  }
  

• 编写Mapper层逻辑

  在RoomInfoMapper中增加如下内容

  IPage<RoomItemVo> pageItemByApartmentId(IPage<RoomItemVo> page, Long id);
  

  在RoomInfoMapper.xml中增加如下内容

  <select id="pageItemByApartmentId" resultMap="RoomItemVoMap">select ri.id,ri.room_number,ri.rent,ai.id apartment_id,ai.name,ai.introduction,ai.district_id,ai.district_name,ai.city_id,ai.city_name,ai.province_id,ai.province_name,ai.address_detail,ai.latitude,ai.longitude,ai.phone,ai.is_releasefrom room_info rileft join apartment_info ai on ri.apartment_id = ai.id and ai.is_deleted = 0where ri.is_deleted = 0and ri.is_release = 1and ai.id = #{id}and ri.id not in (select room_idfrom lease_agreementwhere is_deleted = 0and status in (2, 5))</select>
  

7.4.3.5 公寓信息

公寓信息只需一个接口，即根据ID查询公寓详细信息，具体实现如下

首先在ApartmentController中注入ApartmentInfoService，如下

@RestController
@Tag(name = "公寓信息")
@RequestMapping("/app/apartment")
public class ApartmentController {@Autowiredprivate ApartmentInfoService service;
}

• 查看响应的数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.apartment.ApartmentDetailVo，内容如下

  @Data
  @Schema(description = "APP端公寓信息详情")
  public class ApartmentDetailVo extends ApartmentInfo {@Schema(description = "图片列表")private List<GraphVo> graphVoList;@Schema(description = "标签列表")private List<LabelInfo> labelInfoList;@Schema(description = "配套列表")private List<FacilityInfo> facilityInfoList;@Schema(description = "租金最小值")private BigDecimal minRent;
  }
  

• 编写Controller层逻辑

  在ApartmentController中增加如下内容

  @Operation(summary = "根据id获取公寓信息")
  @GetMapping("getDetailById")
  public Result<ApartmentDetailVo> getDetailById(@RequestParam Long id) {ApartmentDetailVo apartmentDetailVo = service.getApartmentDetailById(id);return Result.ok(apartmentDetailVo);
  }
  

• 编写Service层逻辑

  • 在ApartmentInfoService中增加如下内容

    ApartmentDetailVo getDetailById(Long id);
    

  • 在ApartmentInfoServiceImpl中增加如下内容

    @Override
    public ApartmentDetailVo getDetailById(Long id) {//1.查询公寓信息ApartmentInfo apartmentInfo = apartmentInfoMapper.selectById(id);//2.查询图片信息List<GraphVo> graphVoList = graphInfoMapper.selectListByItemTypeAndId(ItemType.APARTMENT, id);//3.查询标签信息List<LabelInfo> labelInfoList = labelInfoMapper.selectListByApartmentId(id);//4.查询配套信息List<FacilityInfo> facilityInfoList = facilityInfoMapper.selectListByApartmentId(id);//5.查询最小租金BigDecimal minRent = roomInfoMapper.selectMinRentByApartmentId(id);ApartmentDetailVo apartmentDetailVo = new ApartmentDetailVo();BeanUtils.copyProperties(apartmentInfo, apartmentDetailVo);apartmentDetailVo.setGraphVoList(graphVoList);apartmentDetailVo.setLabelInfoList(labelInfoList);apartmentDetailVo.setFacilityInfoList(facilityInfoList);apartmentDetailVo.setMinRent(minRent);return apartmentDetailVo;
    }
    

• 编写Mapper层逻辑

  • 编写查询公寓配套逻辑

    • 在FacilityInfoMapper中增加如下内容

      List<FacilityInfo> selectListByApartmentId(Long id);
      

    • 在FacilityInfoMapper.xml中增加如下内容

      <select id="selectListByApartmentId" resultType="com.atguigu.lease.model.entity.FacilityInfo">select id,type,name,iconfrom facility_infowhere is_deleted = 0and id in (select facility_idfrom apartment_facilitywhere is_deleted = 0and apartment_id = #{id})
      </select>

7.4.4 个人中心

7.4.4.1 浏览历史

浏览历史指的是浏览房间详情的历史，关于浏览历史，有两项工作需要完成，一是提供一个查询浏览历史列表的接口，二是在浏览完房间详情后，增加保存浏览历史的逻辑，下面分别实现。

1.分页查询浏览历史列表

首先在BrowsingHistoryController中注入BrowsingHistoryService，如下

@RestController
@Tag(name = "浏览历史管理")
@RequestMapping("/app/history")
public class BrowsingHistoryController {@Autowiredprivate BrowsingHistoryService service;
}

• 查看请求和响应的数据结构

  • 请求的数据结构

    current和size为分页相关参数，分别表示当前所处页面和每个页面的记录数。

  • 响应的数据结构

    查看web-admin模块下的com.atguigu.lease.web.app.vo.history.HistoryItemVo，如下

    @Data
    @Schema(description = "浏览历史基本信息")
    public class HistoryItemVo extends BrowsingHistory {@Schema(description = "房间号")private String roomNumber;@Schema(description = "租金")private BigDecimal rent;@Schema(description = "房间图片列表")private List<GraphVo> roomGraphVoList;@Schema(description = "公寓名称")private String apartmentName;@Schema(description = "省份名称")private String provinceName;@Schema(description = "城市名称")private String cityName;@Schema(description = "区县名称")private String districtName;
    }
    

• 编写Controller层逻辑

  在BrowsingHistoryController中增加如下内容

  @Operation(summary = "获取浏览历史")
  @GetMapping("pageItem")
  private Result<IPage<HistoryItemVo>> page(@RequestParam long current, @RequestParam long size) {Page<HistoryItemVo> page = new Page<>(current, size);IPage<HistoryItemVo> result = service.pageHistoryItemByUserId(page, LoginUserHolder.getLoginUser().getUserId());return Result.ok(result);
  }
  

• 编写Service层逻辑

  • 在BrowsingHistoryService中增加如下逻辑

    IPage<HistoryItemVo> pageHistoryItemByUserId(Page<HistoryItemVo> page, Long userId);
    

  • 在BrowsingHistoryServiceImpl中增加如下逻辑

    @Override
    public IPage<HistoryItemVo> pageHistoryItemByUserId(Page<HistoryItemVo> page, Long userId) {return browsingHistoryMapper.pageHistoryItemByUserId(page, userId);
    }
    

• 编写Mapper层逻辑

  • 在BrowsingHistoryMapper中增加如下逻辑

    IPage<HistoryItemVo> pageHistoryItemByUserId(Page<HistoryItemVo> page, Long userId);
    

  • 在BrowsingHistoryMapper.xml中增加如下逻辑

    <resultMap id="HistoryItemVoMap" type="com.atguigu.lease.web.app.vo.history.HistoryItemVo" autoMapping="true"><id property="id" column="id"/><result property="roomId" column="room_id"/><collection property="roomGraphVoList" ofType="com.atguigu.lease.web.app.vo.graph.GraphVo"select="selectGraphVoByRoomId" column="room_id"/>
    </resultMap><select id="pageHistoryItemByUserId" resultMap="HistoryItemVoMap">select bh.id,bh.user_id,bh.room_id,bh.browse_time,ri.room_number,ri.rent,ai.name apartment_name,ai.district_name,ai.city_name,ai.province_namefrom browsing_history bhleft join room_info ri on bh.room_id = ri.id and ri.is_deleted=0left join apartment_info ai on ri.apartment_id = ai.id and ai.is_deleted=0where bh.is_deleted = 0and bh.user_id = #{userId}order by browse_time desc
    </select><select id="selectGraphVoByRoomId" resultType="com.atguigu.lease.web.app.vo.graph.GraphVo">select url,namefrom graph_infowhere is_deleted = 0and item_type = 2and item_id = #{room_id}
    </select>
    

2.保存浏览历史

• 触发保存浏览历史

  保存浏览历史的动作应该在浏览房间详情时触发，所以在RoomInfoServiceImpl中的getDetailById方法的最后增加如下内容

  browsingHistoryService.saveHistory(LoginUserContext.getLoginUser().getUserId(), id);
  

• 编写Service层逻辑

  • 在BrowsingHistoryService中增加如下内容

    void saveHistory(Long userId, Long roomId);
    

  • 在BrowsingHistoryServiceImpl中增加如下内容

    @Override
    public void saveHistory(Long userId, Long roomId) {LambdaQueryWrapper<BrowsingHistory> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(BrowsingHistory::getUserId, userId);queryWrapper.eq(BrowsingHistory::getRoomId, roomId);BrowsingHistory browsingHistory = browsingHistoryMapper.selectOne(queryWrapper);if (browsingHistory != null) {browsingHistory.setBrowseTime(new Date());browsingHistoryMapper.updateById(browsingHistory);} else {BrowsingHistory newBrowsingHistory = new BrowsingHistory();newBrowsingHistory.setUserId(userId);newBrowsingHistory.setRoomId(roomId);newBrowsingHistory.setBrowseTime(new Date());browsingHistoryMapper.insert(newBrowsingHistory);}
    }
    

    知识点：

    保存浏览历史的动作不应影响前端获取房间详情信息，故此处采取异步操作。Spring Boot提供了@Async注解来完成异步操作，具体使用方式为：

    • 启用Spring Boot异步操作支持

      在 Spring Boot 主应用程序类上添加 @EnableAsync 注解，如下

      @SpringBootApplication
      @EnableAsync
      public class AppWebApplication {public static void main(String[] args) {SpringApplication.run(AppWebApplication.class);}
      }
      

    • 在要进行异步处理的方法上添加 @Async 注解，如下

      @Override
      @Async
      public void saveHistory(Long userId, Long roomId) {LambdaQueryWrapper<BrowsingHistory> queryWrapper = new LambdaQueryWrapper<>();queryWrapper.eq(BrowsingHistory::getUserId, userId);queryWrapper.eq(BrowsingHistory::getRoomId, roomId);BrowsingHistory browsingHistory = browsingHistoryMapper.selectOne(queryWrapper);if (browsingHistory != null) {browsingHistory.setBrowseTime(new Date());browsingHistoryMapper.updateById(browsingHistory);} else {BrowsingHistory newBrowsingHistory = new BrowsingHistory();newBrowsingHistory.setUserId(userId);newBrowsingHistory.setRoomId(roomId);newBrowsingHistory.setBrowseTime(new Date());browsingHistoryMapper.insert(newBrowsingHistory);}
      }
      

7.4.4.2 预约看房

预约看房管理共需三个接口，分别是保存或更新看房预约、查询个人预约列表和根据ID查询预约详情信息，下面逐一实现

首先在ViewAppointmentController中注入ViewAppointmentService，如下

@Tag(name = "看房预约信息")
@RestController
@RequestMapping("/app/appointment")
public class ViewAppointmentController {@Autowiredprivate ViewAppointmentService service;
}

1. 保存或更新看房预约

在ViewAppointmentController中增加如下内容

@Operation(summary = "保存或更新看房预约")
@PostMapping("/saveOrUpdate")
public Result saveOrUpdate(@RequestBody ViewAppointment viewAppointment) {viewAppointment.setUserId(LoginUserHolder.getLoginUser().getUserId());service.saveOrUpdate(viewAppointment);return Result.ok();
}

2. 查询个人预约看房列表

• 查看响应的数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.appointment.AppointmentItemVo，如下

  @Data
  @Schema(description = "APP端预约看房基本信息")
  public class AppointmentItemVo {@Schema(description = "预约Id")private Long id;@Schema(description = "预约公寓名称")private String apartmentName;@Schema(description = "公寓图片列表")private List<GraphVo> graphVoList;@Schema(description = "预约时间")@JsonFormat(pattern = "yyyy-MM-dd HH:mm:ss")private Date appointmentTime;@Schema(description = "当前预约状态")private AppointmentStatus appointmentStatus;
  }
  

• 编写Controller层逻辑

  在ViewAppointmentController中增加如下内容

  @Operation(summary = "查询个人预约看房列表")
  @GetMapping("listItem")
  public Result<List<AppointmentItemVo>> listItem() {List<AppointmentItemVo> list = service.listItemByUserId(LoginUserHolder.getLoginUser().getUserId());return Result.ok(list);
  }
  

• 编写Service层逻辑

  • 在ViewAppointmentService中增加如下内容

    List<AppointmentItemVo> listItemByUserId(Long userId);
    

  • 在ViewAppointmentServiceImpl中增加如下内容

    @Override
    public List<AppointmentItemVo> listItemByUserId(Long userId) {return viewAppointmentMapper.listItemByUserId(userId);
    }
    

• 编写Mapper层逻辑

  • 在ViewAppointmentMapper中增加如下内容

    List<AppointmentItemVo> listItemByUserId(Long userId);
    

  • 在ViewAppointmentMapper.xml中增加如下内容

    <resultMap id="AppointmentItemVoMap" type="com.atguigu.lease.web.app.vo.appointment.AppointmentItemVo"autoMapping="true"><id column="id" property="id"/><collection property="graphVoList" ofType="com.atguigu.lease.web.app.vo.graph.GraphVo" autoMapping="true"/>
    </resultMap><select id="listItemByUserId" resultMap="AppointmentItemVoMap">select va.id,va.appointment_time,va.appointment_status,ai.name apartment_name,gi.name,gi.urlfrom view_appointment valeft join apartment_info ai on va.apartment_id = ai.id and ai.is_deleted = 0left join graph_info gi on gi.item_type = 1 and gi.item_id = ai.id and gi.is_deleted = 0where va.is_deleted = 0and va.user_id = #{userId}order by va.create_time desc
    </select>
    

3. 根据ID查询预约详情信息

• 查看相应的数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.appointment.AppointmentDetailVo，内容如下

  @Data
  @Schema(description = "APP端预约看房详情")
  public class AppointmentDetailVo extends ViewAppointment {@Schema(description = "公寓基本信息")private ApartmentItemVo apartmentItemVo;
  }
  

• 编写Controller层逻辑

  在ViewAppointmentController中增加如下内容

  @GetMapping("getDetailById")
  @Operation(summary = "根据ID查询预约详情信息")
  public Result<AppointmentDetailVo> getDetailById(Long id) {AppointmentDetailVo appointmentDetailVo = service.getDetailById(id);return Result.ok(appointmentDetailVo);
  }
  

• 编写Service层逻辑

  • 在ViewAppointmentService中增加如下内容

    AppointmentDetailVo getDetailById(Long id);
    

  • 在ViewAppointmentServiceImpl中增加如下内容

    @Override
    public AppointmentDetailVo getDetailById(Long id) {ViewAppointment viewAppointment = viewAppointmentMapper.selectById(id);ApartmentItemVo apartmentItemVo = apartmentInfoService.selectApartmentItemVoById(viewAppointment.getApartmentId());AppointmentDetailVo agreementDetailVo = new AppointmentDetailVo();BeanUtils.copyProperties(viewAppointment, agreementDetailVo);agreementDetailVo.setApartmentItemVo(apartmentItemVo);return agreementDetailVo;
    }
    

7.4.4.3 租约管理

租约管理共有六个接口，分别是获取个人租约基本信息列表、根据ID获取租约详细信息、根据ID更新租约状态、保存或更新租约、根据房间ID获取可选支付方式和根据房间ID获取可选租期，下面逐一实现

首先在LeaseAgreementController中注入LeaseAgreementService，如下

@RestController
@RequestMapping("/app/agreement")
@Tag(name = "租约信息")
public class LeaseAgreementController {@Autowiredprivate LeaseAgreementService service;
}

1. 获取个人租约基本信息列表

• 查看响应的数据结构

  查看web-appp模块下的com.atguigu.lease.web.app.vo.agreement.AgreementItemVo，内容如下

  @Data
  @Schema(description = "租约基本信息")
  public class AgreementItemVo {@Schema(description = "租约id")private Long id;@Schema(description = "房间图片列表")private List<GraphVo> roomGraphVoList;@Schema(description = "公寓名称")private String apartmentName;@Schema(description = "房间号")private String roomNumber;@Schema(description = "租约状态")private LeaseStatus leaseStatus;@Schema(description = "租约开始日期")@JsonFormat(pattern = "yyyy-MM-dd")private Date leaseStartDate;@Schema(description = "租约结束日期")@JsonFormat(pattern = "yyyy-MM-dd")private Date leaseEndDate;@Schema(description = "租约来源")private LeaseSourceType sourceType;@Schema(description = "租金")private BigDecimal rent;
  }
  

• 编写Controller层逻辑

  在LeaseAgreementController中增加如下内容

  @Operation(summary = "获取个人租约基本信息列表")
  @GetMapping("listItem")
  public Result<List<AgreementItemVo>> listItem() {List<AgreementItemVo> result = service.listItemByPhone(LoginUserHolder.getLoginUser().getUsername());return Result.ok(result);
  }
  

• 编写Service层逻辑

  • 在LeaseAgreementService中增加如下内容

    List<AgreementItemVo> listItemByPhone(String phone);
    

  • 在LeaseAgreementServiceImpl中增加如下内容

    @Override
    public List<AgreementItemVo> listItemByPhone(String phone) {return leaseAgreementMapper.listItemByPhone(phone);
    }
    

• 编写Mapper层逻辑

  • 在LeaseAgreementMapper中增加如下内容

    List<AgreementItemVo> listItemByPhone(String phone);
    

  • 在LeaseAgreementMapper.xml中增加如下内容

    <resultMap id="AgreementItemVoMap" type="com.atguigu.lease.web.app.vo.agreement.AgreementItemVo" autoMapping="true"><id property="id" column="id"/><collection property="roomGraphVoList" ofType="com.atguigu.lease.web.app.vo.graph.GraphVo" autoMapping="true"/>
    </resultMap><select id="listItemByPhone" resultMap="AgreementItemVoMap">select la.id,la.lease_start_date,la.lease_end_date,la.rent,la.payment_type_id,la.status lease_status,la.source_type,ai.name apartment_name,ri.room_number,gi.name,gi.urlfrom lease_agreement laleft join apartment_info ai on la.apartment_id = ai.id and ai.is_deleted = 0left join room_info ri on la.room_id = ri.id and ri.is_deleted = 0left join graph_info gi on gi.item_type = 2 and gi.item_id = ri.id and gi.is_deleted = 0where la.is_deleted = 0and la.phone = #{phone}</select>
    

2. 根据ID获取租约详细信息

• 查看响应的数据结构

  查看web-app模块下的com.atguigu.lease.web.app.vo.agreement.AgreementDetailVo，内容如下

  @Data
  @Schema(description = "租约详细信息")
  public class AgreementDetailVo extends LeaseAgreement {@Schema(description = "租约id")private Long id;@Schema(description = "公寓名称")private String apartmentName;@Schema(description = "公寓图片列表")private List<GraphVo> apartmentGraphVoList;@Schema(description = "房间号")private String roomNumber;@Schema(description = "房间图片列表")private List<GraphVo> roomGraphVoList;@Schema(description = "支付方式")private String paymentTypeName;@Schema(description = "租期月数")private Integer leaseTermMonthCount;@Schema(description = "租期单位")private String leaseTermUnit;}
  

• 编写Controller层逻辑

  在LeaseAgreementController中增加如下内容

  @Operation(summary = "根据id获取租约详细信息")
  @GetMapping("getDetailById")
  public Result<AgreementDetailVo> getDetailById(@RequestParam Long id) {AgreementDetailVo agreementDetailVo = service.getDetailById(id);return Result.ok(agreementDetailVo);
  }
  

• 编写Service层逻辑

  • 在LeaseAgreementService中增加如下内容

    AgreementDetailVo getDetailById(Long id);
    

  • 在LeaseAgreementServiceImpl中增加如下内容

    @Override
    public AgreementDetailVo getDetailById(Long id) {//1.查询租约信息LeaseAgreement leaseAgreement = leaseAgreementMapper.selectById(id);if (leaseAgreement == null) {return null;}//2.查询公寓信息ApartmentInfo apartmentInfo = apartmentInfoMapper.selectById(leaseAgreement.getApartmentId());//3.查询房间信息RoomInfo roomInfo = roomInfoMapper.selectById(leaseAgreement.getRoomId());//4.查询图片信息List<GraphVo> roomGraphVoList = graphInfoMapper.selectListByItemTypeAndId(ItemType.ROOM, leaseAgreement.getRoomId());List<GraphVo> apartmentGraphVoList = graphInfoMapper.selectListByItemTypeAndId(ItemType.APARTMENT, leaseAgreement.getApartmentId());//5.查询支付方式PaymentType paymentType = paymentTypeMapper.selectById(leaseAgreement.getPaymentTypeId());//6.查询租期LeaseTerm leaseTerm = leaseTermMapper.selectById(leaseAgreement.getLeaseTermId());AgreementDetailVo agreementDetailVo = new AgreementDetailVo();BeanUtils.copyProperties(leaseAgreement, agreementDetailVo);agreementDetailVo.setApartmentName(apartmentInfo.getName());agreementDetailVo.setRoomNumber(roomInfo.getRoomNumber());agreementDetailVo.setApartmentGraphVoList(apartmentGraphVoList);agreementDetailVo.setRoomGraphVoList(roomGraphVoList);agreementDetailVo.setPaymentTypeName(paymentType.getName());agreementDetailVo.setLeaseTermMonthCount(leaseTerm.getMonthCount());agreementDetailVo.setLeaseTermUnit(leaseTerm.getUnit());return agreementDetailVo;
    }
    

3. 根据ID更新租约状态

• 编写Controller层逻辑

  在LeaseAgreementController中增加如下内容

  @Operation(summary = "根据id更新租约状态", description = "用于确认租约和提前退租")
  @PostMapping("updateStatusById")
  public Result updateStatusById(@RequestParam Long id, @RequestParam LeaseStatus leaseStatus) {LambdaUpdateWrapper<LeaseAgreement> updateWrapper = new LambdaUpdateWrapper<>();updateWrapper.eq(LeaseAgreement::getId, id);updateWrapper.set(LeaseAgreement::getStatus, leaseStatus);service.update(updateWrapper);return Result.ok();
  }
  

4. 保存或更新租约

• 编写Controller层逻辑

  在LeaseAgreementController中增加如下内容

  @Operation(summary = "保存或更新租约", description = "用于续约")
  @PostMapping("saveOrUpdate")
  public Result saveOrUpdate(@RequestBody LeaseAgreement leaseAgreement) {service.saveOrUpdate(leaseAgreement);return Result.ok();
  }
  

5. 根据房间ID获取可选支付方式

• 编写Controller层逻辑

  在PaymentTypeController中增加如下内容

  @Operation(summary = "根据房间id获取可选支付方式列表")
  @GetMapping("listByRoomId")
  public Result<List<PaymentType>> list(@RequestParam Long id) {List<PaymentType> list = service.listByRoomId(id);return Result.ok(list);
  }
  

• 编写Service层逻辑

  在PaymentTypeService中增加如下内容

  List<PaymentType> listByRoomId(Long id);
  

  在PaymentTypeServiceImpl中增加如下内容

  @Override
  public List<PaymentType> listByRoomId(Long id) {return paymentTypeMapper.selectListByRoomId(id);
  }
  

6.根据房间ID获取可选租期

• 编写Controller层逻辑

  在LeaseTermController中增加如下内容

  @GetMapping("listByRoomId")
  @Operation(summary = "根据房间id获取可选获取租期列表")
  public Result<List<LeaseTerm>> list(@RequestParam Long id) {List<LeaseTerm> list = service.listByRoomId(id);return Result.ok(list);
  }
  

• 编写Service层逻辑

  在LeaseTermServcie中曾加如下内容

  List<LeaseTerm> listByRoomId(Long id);
  

  在LeaseTermServiceImpl中增加如下内容

  @Override
  public List<LeaseTerm> listByRoomId(Long id) {return leaseTermMapper.selectListByRoomId(id);
  }
  

7.5 移动端前后端联调

7.5.1 启动后端项目

启动后端项目，供前端调用接口。

7.5.2 启动前端项目

1. 导入前端项目

   将移动端的前端项目（rentHouseH5）导入vscode或者WebStorm，打开终端，在项目根目录执行以下命令，安装所需依赖

   npm install
   

2. 配置后端接口地址

   修改项目根目录下的.env.development文件中的VITE_APP_BASE_URL变量的值为后端接口的地址，此处改为http://localhost:8081即可,如下

   VITE_APP_BASE_URL='http://localhost:8081'
   

   注意：

   上述主机名和端口号需要根据实际情况进行修改。

3. 启动前端项目

   上述配置完成之后，便可执行以下命令启动前端项目了

   npm run dev
   

4. 访问前端项目

   在浏览器中访问前端项目，并逐个测试每个页面的相关功能。