微信小程序request请求方法封装

封装方法  api.js

utils文件下创建api.js

const apiRequest = (url, method, data) => {
  const app = getApp()
  //接收所需要的参数，如果不够还可以自己自定义参数
  let promise = new Promise(function (resolve, reject) {
    var api ='http://localhost:3000'
    wx.request({
      url: api+url,
      data: data ? data : null,
      method: method,
      header: { 'authorization': wx.getStorageSync('eletoken') },
      success: function (res) {
        if (res.data.status == "401") {
          wx.removeStorageSync('eletoken');
          wx.request({
            url: api+'/users/refreshToken',
            //服务器的地址，现在微信小程序只支持https请求，所以调试的时候请勾选不校监安全域名
            header: {
              'content-type': 'application/json'
            },
            method: "GET",
            success: function (res) {
              wx.setStorageSync('eletoken', res.data.token);
              apiRequest(url, method, data)
            }
          })

        } else {
          resolve(res);
        }
        //接口调用成功
        //根据业务需要resolve接口返回的json的数据
      },
      fail: function (res) {
        // fail调用接口失败
        reject({ errormsg: '网络错误,请稍后重试', code: -1 });
      }
    })
  });
  return promise;  //注意，这里返回的是promise对象
}
module.exports = apiRequest

页面count.js中引入api.js，并使用

var apiRequest = require('../../utils/http.js')

getAllByYesterday: function() {
    var that = this;
    apiRequest('/getAllByYesterday', 'GET', {
      printDate: that.data.date,
      workName: this.data.currentCenter
    }).then(res => {
      if (res.data.status == "404") {
        wx.showToast({
          title: res.data.msg,
          icon: "none",
          duration: 2000,
        })
        var data = res.data.result
        that.setData({
          countP: [],
          countN: [],
          displayP: 'block',
          displayN: 'block'
        })
        return;
      }
      var data = res.data.result
      var countP = []
      var countN = []
      data.forEach(item => {
        if (item.categroy == '打印机') {
          countP.push(item)
        } else {
          countN.push(item)
        }
        that.setData({
          countP: countP,
          countN: countN,
          displayP: 'block',
          displayN: 'block'
        })
      })
    })
  }