小程序 使用Promise封装request 接口请求

//httpService.js
const host = 'https://baidu.com/ceshi' // 接口请求的域名
// get请求使用 json对象转字符串 （formatParams ）
const formatParams = (data) => {
  let arr = []
  for (let name in data) {
    arr.push(encodeURIComponent(name) + '=' + encodeURIComponent(data[name]))
  }
  return arr.join('&')
}
// 创建统一调用函数
const httpService = (url, params, method, loading = true) => {
  wx.showLoading({
    title: '数据加载中...',
  })
  let header = {
    "content-type": "application/json;charset=UTF-8"
  }
  return new Promise((resolve, reject) => {
    if (method === 'post') {
      wx.request({
        url: host + url,
        data: params,
        method: method,
        header: header,
        timeout: 15000,
        complete: (res) => {
          resolve(res)
          wx.hideLoading()
        }
      })
    } else if (method === 'get'){
      wx.request({
        url: host + url + '?' + formatParams(params),
        method: method,
        header: header,
        timeout: 15000,
        complete: (res) => {
          resolve(res)
          wx.hideLoading()
        }
      })
    }
   
  })
}

module.exports = {

httpService

}

//api.js 定义使用的接口api 实现统一管理
const { httpService } = require('httpService.js')
/**
 * @name 医生/患者-我的提问详情页
 * @param {*} params
 */
const questionSessionId = (sessionId, params) => {
  return httpService(`question/${sessionId}`, params, 'get')
}
module.exports = {
  questionSessionId
}

页面使用

const { questionSessionId } = require('../../utils/api.js') // 引用
// 使用 方法一
 questionSessionId(id, data).then(res=>{
      console.log(res)
    }).catch(res=>{
      console.log(res)
    }
 )
// 使用方法二
async questionSession() {
      const getData= await questionSessionId(id, data)
      console.log(getData)
}