// 开发文档: https://uniapp.dcloud.net.cn/uniCloud/cloud-obj const uniCaptcha = require('uni-captcha') const db = uniCloud.database(); const verifyCodes = db.collection('opendb-verify-codes') module.exports = { async getImageCaptcha({scene}) { let {deviceId} = this.getClientInfo(); let res = await verifyCodes.where({scene,deviceId,state:0}).limit(1).get() console.log("res: " + JSON.stringify(res)); let action = res.data.length?'refresh':'create' console.log(action); return await uniCaptcha[action]({ scene, width:100, height:44 }) } }