uni 小程序登录，授权登录模板，授权登录失败

记录下，之前一直拿到code后就不管了，后来加上iv、encryptedData 给后台，但是有时候解密会报错，就会显示授权登录失败，最后找到原因是先获取用户信息导致的

1.点击之后先登录获取code
2.获取code后再获取用户信息
3.传递数据
备注：先调用了getUserInfo获取了解密数据，然后又调用的login，就会刷新登录态，导致登录失败

<template><view class="page"><view class="tk-column  "><view class="title"><image src="../../static/logo.jpg" class="logo" mode="aspectFill"></image></view><view class="login-btn-box tk-column"><button class="btn-tk" @getuserinfo="do_login" open-type="getUserInfo">登录</button></view></view></view>
</template><script>export default {data() {return {wx_code: '',}},methods: {do_login(e) {let infoRes = e.detail;var that = this;//获取用户授权uni.getProvider({service: 'oauth',success: function(res) {// console.log(res);//微信端if (~res.provider.indexOf('weixin')) {console.log("weixin login");//微信登录uni.login({provider: 'weixin',success: function(loginRes) {console.log('loginRes.code---------' + loginRes.code);that.wx_code = loginRes.code;uni.getUserInfo({provider: 'weixin',withCredentials: true,success: function(userRes) {console.log(userRes);that.post_login(userRes);//这里拿最新一次获取的},fail: function(userRes) {}})},fail: function(loginRes) {console.log(loginRes);}});}}});},post_login(e) {// console.log(e);var that = this;let data = {method: 'user.nflogin',code: this.wx_code,edata: e.encryptedData,iv: e.iv};that.$api.post('', data).then(res => {let data = res.data;// console.log(res);uni.showToast({title: data.msg,icon: "none"});if (data.status) {// console.log(data.code);// console.log(data.data.token)// that.wx_getuser_show=false //保存登录状态 // this.$store.state.hasLogin = true;uni.setStorageSync('token', data.data.token);uni.setStorageSync('hasLogin', true);that.get_userinfo();}})},//获取用户信息get_userinfo() {// console.log('get user info');var that = this;let data = {method:login,token: token,};that.$api.post('', data).then(res => {let data = res.data.data;uni.setStorageSync('userInfo', data);// console.log(data);uni.navigateBack({})})}}}
</script><style scoped lang="scss">.page {padding: 15upx;height: 100%;}.title {font-weight: bold;font-size: 46upx;text-align: center;line-height: 4rem;}.tk-column {}.login-btn-box {width: 100%;height: 300upx;align-self: center;justify-content: center;.btn-tk {align-items: center;}}.logo {width: 100%;}
</style>

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