WeChat：新建微信小程序

1、修改app.js

// app.js
App({
  onLaunch() {
    // 登录
    wx.login({
      success: res => {
        // 发送 res.code 到后台换取 openId, sessionKey, unionId
        if (res.code) {
          // console.log(res.code)
          var that = this
          wx.request({
            url: that.globalData.url + 'api/sys_Login/LoginIn_WeChat',
            data: { code: res.code },
            header: { "content-type": "application/json" },
            method: 'POST',
            success: res=> {
              // console.log(res);
              that.globalData.openid = res.data;
              wx.setStorage({
                key: 'openid',
                data: res.data,
              })
            }
          })
        } else {
          console.log('登录失败！')
        }
      }
    })
  },
  globalData: {
    url: 'http://127.0.0.1:8888/',
    token: null,
    openid: null,
    userInfo: null,
  }
})

2、修改index.

  <view class="usermotto">
    <button type="primary" bindtap="getMyWork">微信登陆工作台</button>
  </view>

  getMyWork(e){
    const openid = wx.getStorageSync('openid') || ""
    wx.request({
      url: app.globalData.url + 'api/sys_Login/LoginIn_token',
      data: { "openid": openid},
      method: 'GET',
      success:res=>{
        if (res.data =='noUserInfo'){
          //不存在用户
          wx.getUserProfile({
            desc: '展示用户信息', 
            success: res => {
              // console.log(res)
              wx.request({
                url: app.globalData.url + 'api/sys_Login/addUser_WeChat',
                data: {
                  "openid": app.globalData.openid,
                  "nickname": res.userInfo.nickName,
                  "avatarUrl": res.userInfo.avatarUrl,
                  "gender": res.userInfo.gender,
                },
                header: {
                  'content-type': 'application/json' //默认值
                },
                method: 'POST',
                success: res => {
                  // console.log(res)
                  if(res){
                    wx.navigateTo({
                      url: '../logs/logs'
                    })
                  }
                }
              })
              this.setData({
                userInfo: res.userInfo,
                hasUserInfo: true
              })
            }
          })
        }else{
          if(res.data=='hasUserInfo'){
            wx.navigateTo({
              url: '../logs/logs'
            })
          }else{
            // console.log(res.data)
            app.globalData.token = res.data
            wx.setStorage({key: 'token',data: res.data})
            wx.navigateTo({
              url: '../logs/logs'
            })
          }
        }
      }
    })
  }