app.js

//app.js

App({
  onLaunch: function () {
    //调用API从本地缓存中获取数据
    var logs = wx.getStorageSync('logs') || []
    logs.unshift(Date.now())
    wx.setStorageSync('logs', logs)

  },
  getUserInfo: function (cb) {
    var that = this
    if (this.globalData.userInfo) {
      typeof cb == "function" && cb(this.globalData.userInfo)
    } else {
      //调用登录接口
      wx.login({
        success: function () {
          wx.getUserInfo({
            success: function (res) {
              that.globalData.userInfo = res.userInfo
              typeof cb == "function" && cb(that.globalData.userInfo)
            }
          })
        }
      })
    }
  },
  globalData: {
    userInfo: null
  },
  uploadimg: function (data) {
    var that = this,
      i = data.i ? data.i : 0,
      success = data.success ? data.success : 0,
      fail = data.fail ? data.fail : 0;
    wx.uploadFile({
      url: data.url,
      filePath: data.path[i],
      name: 'fileData',
      formData: null,
      success: (resp) => {
        success++;
        console.log(resp)
        console.log(i);
        //这里可能有BUG，失败也会执行这里
      },
      fail: (res) => {
        fail++;
        console.log('fail:' + i + "fail:" + fail);
      },
      complete: () => {
        console.log(i);
        i++;
        if (i == data.path.length) {  //当图片传完时，停止调用     
          console.log('执行完毕');
          console.log('成功：' + success + " 失败：" + fail);
        } else {//若图片还没有传完，则继续调用函数
          console.log(i);
          data.i = i;
          data.success = success;
          data.fail = fail;
          that.uploadimg(data);
        }
      }
    });
  }
})