怎么用snsapi_base获取到用户的openid

//index.js 验证文档上默认的参数返回签名一致，点击调用的时候一直出现 签名错误问题 //获取应用实例 const app = getApp() Page({   data: {     motto: 'Hello World',     userInfo: {},     hasUserInfo: false,     canIUse: wx.canIUse('button.open-type.getUserInfo'),     data:{}   },   onLoad:function(){     var t = this     wx.login({       complete: (res) => {         if(res.code){             wx.request({               data:{code:res.code},               url: 'https://www.lefakeji.com/api/user/getwxuserinfo',               success:(re)=>{                 var data = re.data                 wx.checkSession({                   complete: (res) => {                     console.log(res)                   },                 })                 console.log(re)                   t.setData({                     data:data                   })               }             })         }       },     })        },   joinVoIPChat:function(){          var t = this     wx.getSetting({          success:function(r){            if(r.authSetting['scope.record']){             var data = t.data.data             console.log(data.sign)             console.log(data.nonceStr)             console.log(data.timeStamp)             console.log(data.groupId)             wx.joinVoIPChat({               signature:data.sign,               nonceStr:data.nonceStr,               timeStamp:parseInt(data.timeStamp),               groupId:data.groupId,               complete:(re)=>{                 console.log(re)                 wx.showModal({                   title: '提示',                   content: re.errMsg,                   success (res) {                     if (res.confirm) {                       console.log('用户点击确定')                     } else if (res.cancel) {                       console.log('用户点击取消')                     }                   }                 })               }             })            }else{              wx.startRecord({                complete: (res) => {                  wx.stopRecord({                    complete: (res) => {},                  })                },              })            }         }     })     return     wx.startRecord({       success: (res) => {                  },       fail:(re)=>{         console.log(re)       }     })        } })