uni-app获取用户OpenId及用户详情

页面增加一个按钮

<button type="default" open-type="getUserInfo" @click="getUserInfo">UserInfo</button>

前端解密

安装 crypto-js

npm install crypto-js

下载 WXBizDataCrypt.js 文件
WXBizDataCrypt.js微信官方下载地址

打开Node文件夹，把 WXBizDataCrypt.js 文件放入你的项目中。（比如我是放在我的common文件夹下）
在需要解密的页面引用该文件

import WXBizDataCrypt from "@/common/WXBizDataCrypt.js";        //请以你的实际地址为准

具体代码如下，关键位置请看注释

data() {
            return {
                Code: '',
                openid: '',
                session_key: ''
            }
        },

getUserInfo() {
                //登录
                uni.login({
                    provider: 'weixin',
                    success: res => {                        
                        // console.log('登录成功：', res);
                        //获取临时登录凭证code
                        this.Code = res.code;                        
                        //获取openid，session_key
                        let appid = "wxce185cd1da123456"  //需替换
                        let secret = "25d0fe7478355910fc143ce6b1234567"  //需替换
                        let url = 'https://api.weixin.qq.com/sns/jscode2session?appid=' + appid + '&secret=' + secret +
                            '&js_code=' +                            this.Code + '&grant_type=authorization_code';
                        uni.request({
                            url: url, // 请求路径
                            success: res => {                                // console.log('openid session_key:', res.data);
                                this.openid = res.data.openid                                this.session_key = res.data.session_key                                //获取用户信息                                uni.getUserInfo({
                                    provider: 'weixin',
                                    success: res => {
                                        console.log('获取用户信息', res);                                        //解密encryptedData，可获取用户openId
                                        let pc = new WXBizDataCrypt(appid, this.session_key);
                                        let data = pc.decryptData(res.encryptedData, res.iv);
                                        console.log('解密后：',data)
                                    },
                                    fail: err => {
                                        console.log('获取用户信息错误：', err)
                                    }
                                })

                            },
                            fail: err => {
                                console.log('请求失败：',err)
                            }
                        });
                    },
                    fail: err => {
                        console.log('登录失败：', err)
                    }
                })
            },