做了两款小程序，都是基于【小程序云开发】 1: 吃什么 Today 提供饮食日记（可分享）、查看附近网友分享的日记。 从图片的上传、内容安全的检测，到附近网友分享的记录（重点云数据库），均使用微信提供的服务； 重点：GEO 特性（超级赞），把距离什么的全算好了，非常省事（该小程序于本月才发布上线，是 18 年年底开始开发的，那时还没有此类特性）； 代码（为避免无意义的吐槽，已删除注释） const _ = db.command; const $ = db.command.aggregate; var OPENID = wxcontext.OPENID; var aggregate; var recordId = event['id']; if ( recordId ) { event.tab = TAB_OVERALL; } switch (event.tab) { case TAB_NEARBY: aggregate = db.collection('records').aggregate(); aggregate.geoNear({ distanceField: 'distance', spherical: true, near: db.Geo.Point(event.lng, event.lat), maxDistance: 4 * 5 * 1000, query: { text: _.neq(null), status: STATUS.PASSED, visibility: VISIBILITY.PUBLIC } }); break; case TAB_OVERALL: aggregate = db.collection('records').aggregate(); var conditions = { text: _.neq(null), status: STATUS.PASSED, visibility: VISIBILITY.PUBLIC }; if ( recordId ) { conditions._id = recordId; } aggregate.match( conditions ); break; case TAB_FOLLOWING: var following = await db.collection('wx_users') .where({ followers: _.elemMatch(_.in([ OPENID ])) }) .field({ _openid: true }) .get(); var users; if (following.data.length) { users = []; following.data.forEach(function(x) { users.push(x._openid); }); } else { return { list: [] }; } aggregate = db.collection('records').aggregate(); aggregate.match({ _openid: _.in( users ), text: _.neq(null), status: STATUS.PASSED, visibility: VISIBILITY.PUBLIC }); break; } // -------------------------------------- aggregate .sort({ create_time: -1 }) .skip(20 * (0)) .limit(20); switch (event.tab) { case TAB_NEARBY: case TAB_OVERALL: aggregate.lookup({ from: "wx_users", localField: "_openid", foreignField: "_openid", as: "wx_user" }); break; case TAB_FOLLOWING: aggregate.lookup({ from: "wx_users", localField: "_openid", foreignField: "_openid", as: "wx_user" }); break; } aggregate.replaceRoot({ newRoot: $.mergeObjects([$.arrayElemAt(['$wx_user', 0]), '$$ROOT']) }) .addFields({ is_owner: $.eq(['$_openid', OPENID]), following: $.cond({ if: $.isArray('$followers'), then: $.in([OPENID, '$followers']), else: false, }), liked: $.cond({ if: $.isArray('$likes'), then: $.in([OPENID, '$likes']), else: false, }) }); var shouldRemoveFields = { _openid: false, nick_name: false, gender: false, // ------------------------------------ wx_user: false, followers: false, likes: false, views: false, wx_runtime: false, // ------------------------------------ geo_coord_type: false, address_rough: false, location: false, city: false, province: false, country: false, language: false }; switch (event.tab) { case TAB_FOLLOWING: case TAB_OVERALL: shouldRemoveFields.address_recommend = false; break; } aggregate.project( shouldRemoveFields ); var output = await aggregate.end(); 当然最重要的是是真相 [图片] [图片] 2: 汇品栈（废品回收） 同样是基于云开发，重点依然是 GEO 特性（派单时通过 GEO 预筛选出就近的师傅）。 [图片]

之前这个 cloud.DYNAMIC_CURRENT_ENV 应该是 String 类型，某次更新后为 Symbol 类型了。

可以实现，参考腾讯云图片处理相关的文档。 https://cloud.tencent.com/document/product/460/36540

对，我在 iOS 设备一次订阅可收到多次，但 Android 设备只能收到一次，二次发送消息，则提示 -> Error: errCode: 43101 | errMsg: openapi.subscribeMessage.send:fail user refuse to accept the msg hint