上传到云存储的方法

function uploadFile(cloudParentPath, filePath){
    var temps = filePath.split('.')
    var cloudPath = cloudParentPath + app.globalData.openid + '_' + new Date().getTime() + '.' + temps[temps.length -1]
    console.log(cloudPath)
    return new Promise((resolve, reject) => {
      wx.cloud.uploadFile({
        cloudPath: cloudPath, // 上传至云端的路径
        filePath: filePath, // 小程序临时文件路径
        success: res => {
          // 返回文件 ID
          console.log(res)
          resolve(res.fileID)
        },
        fail: error => {
          console.error(error)
          reject(error)
        }
      })
    })
}

wxml

<mp-uploader bindfail="uploadError" bindsuccess="uploadSuccess" select="{{selectFile}}" upload="{{uplaodFile}}" files="{{files}}" max-count="3" title="图片上传" tips="图片上传提示"></mp-uploader>

我遇到的报upload file fail, urls not found错误原因 是直接resolve(res)

查看开发文档https://developers.weixin.qq.com/miniprogram/dev/extended/weui/uploader.html

所以需要把返回的路径地址放到数组中

js里 uploadFile

uplaodFile(files) {
      console.log('upload files', files)
      // 文件上传的函数，返回一个promise
      let that = this
      return new Promise((resolve, reject) => {
        util.cloudFunction.uploadFile('space/pr/', files.tempFilePaths[0]).then(res => {
          console.log(res)
          var urls = [res]
          resolve({urls})
        }).catch(error => {
          reject('some error')
        })
      })
},

注意cloudPath不能以/开头，而且上传的路径文件夹必须已经存在。