授权登录

<button open-type="getUserInfo" lang="zh_CN" bindgetuserinfo="onGotUserInfo"  class="fix">登录</button>

//index.js//获取应用实例var APPID ='xxx'var SECRET = 'xxx'const app = getApp()Page({  data: {    list:[],    userInfo:null  },  //事件处理函数  onGotUserInfo:function (e) {    if (e.detail.userInfo != undefined && app.globalData.isok == false) {      console.log(e.detail.userInfo)          wx.login({            success: function (data) {              console.log('获取登录 Code：' + data.code)              var postData = {                code: data.code              };              wx.request({                // url: 'https://api.weixin.qq.com/sns/jscode2session?appid=' + APPID + '&secret=' + SECRET + '&js_code=' + postData.code + '&grant_type=authorization_code',                url: 'https://m.renyiwenzhen.com/rymember.php?mod=xcxlogin&code=' + postData.code + '&nickname=' + e.detail.userInfo.nickName,                data: {},                header: {                  'content-type': 'application/json'                },                success: function (res) {                  // openid = res.data.openid //返回openid                  console.log(res.data);                  wx.setStorage({                    key: "unionid",                    data: res.data.unionid                  })                  wx.navigateTo({                    url: '../archives/archives'                  })                },                fail: function () {                  console.log('1');                }              })            },            fail: function () {              console.log('登录获取Code失败！');            }          })    }    else if (app.globalData.isok==true) {            wx.navigateTo({              url: '../archives/archives'            })    }  },  onLoad: function () {    var that =this    wx.request({      url: 'https://m.xxx.com/xcx_ajax.php?action=yimiaolist', //仅为示例，并非真实的接口地址      method: 'post',      header: {        'content-type': 'application/json' // 默认值      },      success(res) {        console.log(res.data)        that.setData({          list: res.data        })      }    })      if (app.globalData.userInfo) { //获取用户信息是一个异步操作，在onLoad函数加载的时候app.js中的onLaunch可能还没有加载，所以需要判断是否获取成功        this.setData({          userInfo: app.globalData.userInfo,          hasUserInfo: true        })      } else if (this.data.canIUser) { //判断canIUser的值是否为true，实则在判断微信小程序版本是否支持相关属性        app.userInfoReadyCallback = (res) => { // userInfoReadyCallback：userInfo的回调函数，声明一个回调函数，将回调函数传给app.js，userInfo加载完成后会执行这个回调函数，这个回调函数会将获取的getUserInfo的结果直接传回来          // 在app.js中获取用户信息之后调用这个函数，结果放在函数的参数中          this.setData({            userInfo: res.userInfo,            hasUserInfo: true          })        }      } else {        wx.getUserInfo({ //在老的版本中是可以直接调用授权接口并获取用户信息          success: (res) => {            this.setData({              userInfo: res.userInfo,              hasUserInfo: true            })          }        })      }  }})

每次检查是否授权

//app.jsApp({   globalData: {     userInfo: null,     isok:false,     unionid:null   },  onLaunch: function () {  /* 已授权之后，自动获取用户信息 */  // 判断是否授权  wx.getSetting({    success: (res) => { //箭头函数为了处理this的指向问题      if (res.authSetting["scope.userInfo"]) {        console.log("已授权");        // 获取用户信息        wx.getUserInfo({          success: (res) => { //箭头函数为了处理this的指向问题            this.globalData.isok=true            var that =this            console.log(res.userInfo); //用户信息结果            wx.getStorage({              key: 'unionid',              success(res) {               that.globalData.unionid=res.data              }            })            this.globalData.userInfo = res.userInfo;            if (this.userInfoReadyCallback) { //当index.js获取到了globalData就不需要回调函数了，所以回调函数需要做做一个判断，如果app.js中有和这个回调函数，那么就对这个函数进行调用，并将请求到的结果传到index.js中              this.userInfoReadyCallback(res.userInfo);            }          }        })      }      else{        console.log("未授权");        wx.removeStorage({          key: 'unionid'        })      }    }  })  }})

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