mini-program/pages/me/me.js

// pages/me/me.js
import * as requestAPI from '../../models/dataModel'
Page({
  data: {
    isLogin: false,
    userName: ''
  },
  onLoad: function (options) {
  },

  onShow() {
    if(wx.getStorageSync('token') && !this.data.userName) {
      requestAPI.getUserInfo().then(res => {
        this.setData({
          userName: res.data.data.sysUser.username,
          isLogin: true
        })
      })
    }
  },

  login() {
    if(!this.data.isLogin) {
      wx.navigateTo({
        url: '/pages/login/login',
      })
    }
  }
})