WxApp/page/component/index.js

const app = getApp()
Page({
  data: {
    imgUrls: ["/image/b1.jpg", "/image/b2.jpg", "/image/b3.jpg"],
    indicatorDots: false,
    autoplay: false,
    interval: 3000,
    duration: 800,
    goods: {},
  },
  onLoad() {
    var self = this
    self.checkUserProfile()
    self.getUserProfile()//  //获取openId
    /**
     * 发起请求获取商品列表信息
     */
    wx.request({
      // get请求
      url: app.globalData.baseUrl + "/goods/loadData",
      success(res) {
        self.setData({
          goods: res.data.data,
        })
      },
    })
  },
  /**
  * 检查本地缓存中是否有用户信息
  */
  checkUserProfile() {
    const userInfo = wx.getStorageSync('userInfo');
    if (userInfo) {
      // 如果有用户信息，直接设置数据
      this.setData({
        thumb: userInfo.avatarUrl,
        nickname: userInfo.nickName,
      });
    } else {
      //如果本地没有存储用户信息，则通过openId查数据库中是否已经注册
      wx.request({
        url: app.globalData.baseUrl + "/user/getById",
        method: "GET",
        data: {
          openId: wx.getStorageSync('openid'),
        },
        success(res) {
          console.log("查到的用户信息" + res.data.data)
          if (res.data.data != null) {
            // 将用户信息存到 StorageSync
            const userInfo = {
              avatarUrl: res.data.data.avatarUrl,
              nickName: res.data.data.username
            };
            wx.setStorageSync('userInfo', userInfo);  // 存储到本地
          } else {
            wx.showModal({
              title: '温馨提示',
              content: '请先登录！',
              showCancel: false,
              success: (res) => {
                if (res.confirm) {
                  console.log(res)
                  wx.navigateTo({
                    url: '/page/component/login/login',
                  });
                }
              }
            })
          }
        }
      })
    }
  },
  //获取openId
  getUserProfile() {
    //通过wx.login()获取登录凭证code
    wx.login({
      success: (res) => {
        const wxConfig = {
          appid: "wx865aefa5a7115ae0",
          secret: "df0817d59696a6160de2770222d8ec53",
          code: res.code
        }
        console.log("code: " + res.code)
        wx.request({
          url: "https://api.weixin.qq.com/sns/jscode2session?appid=" + wxConfig.appid + "&secret=" + wxConfig.secret + "&code=" + wxConfig.code + "&js_code=" + wxConfig.code + '&grant_type=authorization_code',
          success: (res) => {
            console.log("openid:" + res.data.openId)
            wx.setStorageSync('openid', res.data.openid);
          },
          fail: (err) => {
            console.error('wx.login 失败', err);
          }
        })
      },
    })
  },
})