小程序上传图片到七牛

'use strict'
import Base from './base.js';
import qiniu from 'qiniu';

export default class extends Base{
   async uploadAction(){
       var accessKey = '注册七牛云之后，七牛提供的accessKey';
       var secretKey = '注册七牛云之后，七牛提供的secretKey';
       var bucket = '你自己创建的存储对象'
       var mac = new qiniu.auth.digest.Mac(accessKey,secretKey);
       var options = {
           scope:bucket,
       };
       var  putPolicy = new qiniu.rs.PutPolicy(options);
       var uploadToken = putPolicy.uploadToken(mac);
       think.log(uploadToken)
       //    给前端返回一个uploadToken
       return this.success(uploadToken);
   }
}

upload: function () {
    var that = this;
    wx.request({
      url: app.globalData.get_url + "/upload/upload",
      success: function (res) {
        var uploadToken = res.data.data;
        that.setData({
          uploadToken: uploadToken
        })
      }
    })
  },

chooseImage02: function (e) {
    var that = this;
    wx.chooseImage({
      count: 1,
      sizeType: ['original', 'compressed'],// 可以指定是原图还是压缩图，默认二者都有
      sourceType: ['album', 'camera'], // 可以指定来源是相册还是相机，默认二者都有
      success: function (res) {
        var wechatma = [];
        var tempFilePaths = res.tempFilePaths;
        var filePath = tempFilePaths[0];

        //七牛提供的上传方法

        qiniuUploader.upload(filePath, (res) => {
          wechatma.push(res.imageURL)
          that.setData({
            imageURL02: res.imageURL,
            wechatma: wechatma
          });
        }, (error) => {
          console.log('error: ' + error);
        }, {
            region: 'ECN',
            domain: app.globalData.upload_url + '/',
            uptoken: that.data.uploadToken, // 由其他程序生成七牛 uptoken
          });
      }
    })
  },
  previewImage02: function (e) {
    wx.previewImage({
      current: e.currentTarget.id, // 当前显示图片的http链接
      urls: this.data.wechatma // 需要预览的图片http链接列表
    })
  },