JAVA同城组局找搭子小程序开发源码uniapp代码片段

以下是基于uniapp开发同城组局小程序的Java后端与前端代码片段参考，分为核心功能模块和关键技术实现：

后端Java代码（Spring Boot框架）

用户模块

@RestController @RequestMapping("/api/user") public class UserController { @Autowired private UserService userService; @PostMapping("/login") public Result<User> login(@RequestBody LoginDTO dto) { return userService.login(dto); } @PostMapping("/location") public Result updateLocation(@RequestHeader("token") String token, @RequestBody LocationDTO dto) { return userService.updateLocation(token, dto); } }

组局活动模块

@PostMapping("/activity/create") public Result createActivity(@RequestBody ActivityDTO dto) { // 验证参数逻辑 if(StringUtils.isEmpty(dto.getTitle())) { return Result.error("标题不能为空"); } return activityService.create(dto); } @GetMapping("/activity/nearby") public Result<List<ActivityVO>> getNearbyActivities( @RequestParam double longitude, @RequestParam double latitude, @RequestParam int radius) { return activityService.findNearby(longitude, latitude, radius); }

前端Uniapp代码片段

定位获取实现

// pages/index/index.vue methods: { getLocation() { uni.getLocation({ type: 'gcj02', success: (res) => { this.longitude = res.longitude this.latitude = res.latitude this.loadNearbyActivities() } }) } }

活动卡片组件

<template> <view class="activity-card" @click="navigateToDetail"> <image :src="item.coverImage" mode="aspectFill"/> <text class="title">{{item.title}}</text> <view class="footer"> <text>{{item.distance}}km</text> <text>{{item.joinCount}}人已加入</text> </view> </view> </template>

数据库设计关键表

活动表结构

CREATE TABLE `activity` ( `id` bigint NOT NULL AUTO_INCREMENT, `title` varchar(100) NOT NULL, `content` text, `location` point NOT NULL SRID 4326, `address` varchar(255) DEFAULT NULL, `start_time` datetime NOT NULL, `creator_id` bigint NOT NULL, `max_people` int DEFAULT 10, PRIMARY KEY (`id`), SPATIAL KEY `idx_location` (`location`) ) ENGINE=InnoDB;

关键技术点

1. 地理空间查询：使用MySQL的ST_Distance_Sphere函数计算距离

   @Query(value = "SELECT a.*, ST_Distance_Sphere(a.location, POINT(:lng,:lat)) as distance " + "FROM activity a WHERE a.start_time > NOW() " + "HAVING distance < :radius ORDER BY distance LIMIT 20", nativeQuery = true)

2. WebSocket实时通知：活动状态变更时推送消息

   @Autowired private SimpMessagingTemplate messagingTemplate; public void notifyMembers(Long activityId, String message) { messagingTemplate.convertAndSend( "/topic/activity/" + activityId, new NotificationDTO(message)); }

3. uniapp跨平台适配：通过条件编译处理平台差异

   // #ifdef MP-WEIXIN wx.requestSubscribeMessage({tmplIds:['模板ID']}) // #endif

实际开发需补充支付接入、审核机制、敏感词过滤等模块。建议使用Redis缓存热门活动数据，采用分库分表策略应对用户增长。前端需注意权限控制，获取用户定位时需要显式授权提示。