getOnenetData:function() {     var that = this      let deviceid = "deviceid "     let apikey = "apikey "     wx.request({       url: "https://api.heclouds.com/devices/" + deviceid + "/datastreams",               method: 'GET',                  data: {           picindex:''         },         header: {           "content-type": 'application/x-www-form-urlencoded',           // "content-type": 'application/octet-stream',           "api-key": apikey         },         success(res) {                      if (res.statusCode === 200) {            /* console.log(res)*/             console.log(res)             that.setData({               picindex: res.data.data[0].current_value.index,                 })             app.globalData.picindex = res.data.data[0].current_value.index             console.log(that.data.picindex)             console.log(app.globalData.picindex)           }         },          })      },   getOnenetpic: function () {     var that = this;     let apikey = 'maskapikey='//maskapi          wx.request({       url: "https://api.heclouds.com/bindata/" + app.globalData.picindex,       method:"GET",       responseType: 'arraybuffer',       data: {         img: '',       },       header:{         'api-key': apikey       },              success(res) {         if (res.statusCode === 200) {                     console.log(res)           // console.log(that.data.picindex)           const base64=wx.arrayBufferToBase64(res.data)            console.log(base64)            that.setData({             img:"data:image/jpg;base64,"+base64           })           console.log(that.data.img)                }       }     })   },