微信是无法获取用户的身份证信息，那么我们可以自己通过上传或者拍摄身份证，然后结合ocr进行识别，那么最后为了保证准确性，再通过人脸识别来比对，辨别是不是本人，关于人脸识别，在我这篇博客里介绍了 uniapp + vue3微信小程序开发（2）活体人脸识别

1、 关于上传照片

注: proxy.$api.user.xxx 是我封装的接口调用方式

uni.chooseImage({
			count: 1,
			success: result => {
				uni.showLoading({
					title: '正在上传...'
				})
                proxy.$api.user.uploadIdCardFront({
						file: result.tempFilePaths[0]
					}).then(res => {
						uni.hideLoading()
						if (res.code == 200) {
						}
					})
            }
})

chooseImage 默认是相册模式/拍摄模式一起的，count 是选择相片数量，具体uni.chooseImage可以在uniapp官网详细观看

2、部分截图

开始人别识别验证就是我上面给的链接：活体人脸识别那里

3、详细代码

<template>
	<view class="id-card">
		<view class="main">
			<view class="upload" @click="photoControl(0)">
				<view class="default" v-if="!idCard.idPhoto0">
					<image class="default-img" src="../../static/img/own/id-card0.png" mode="widthFix"></image>
					<view class="default-slot">
						<view class="icon-box">
							<van-icon size="30" name="photograph" />
						</view>
						<text>点击拍摄/上传人像面</text>
					</view>
				</view>
				<image class="special" v-if="idCard.idPhoto0" :src="idCard.idPhoto0"></image>
			</view>
			<view class="upload" @click="photoControl(1)">
				<view class="default" v-if="!idCard.idPhoto1">
					<image class="default-img" src="../../static/img/own/id-card1.png" mode="widthFix"></image>
					<view class="default-slot">
						<view class="icon-box">
							<van-icon size="30" name="photograph" />
						</view>
						<text>点击拍摄/上传国徽面</text>
					</view>
				</view>
				<image class="special" v-if="idCard.idPhoto1" :src="idCard.idPhoto1"></image>
			</view>
		</view>
		<view class="protocol">
			<van-checkbox shape="square" :value="checked" @change="onchange">
				本人已充分理解并同意《个人信息保护告知同意书》和《人脸识别服务协议》的全部内容。
			</van-checkbox>
		</view>
		<button type="primary" class="bottom" @click="faceCompare">
			开始人脸识别验证
		</button>
	</view>
</template>

<script setup>
	import {
		onLoad
	} from '@dcloudio/uni-app'
	import {
		reactive,
		ref,
		getCurrentInstance
	} from 'vue'
	const { proxy } = getCurrentInstance()
	const idCard = reactive({
		idPhoto0: '', // 人像面
		idPhoto1: '' // 国徽面面
	})
	const realUser = ref({}) // 用户身份证识别出的真实信息
	const checked = ref(true) // 同意协议
	/**
	 * 上传照片或者拍照
	 */
	const photoControl = (type) => {
		uni.chooseImage({
			count: 1,
			success: result => {
				uni.showLoading({
					title: '正在上传...'
				})
				if (type === 0) {
					proxy.$api.user.uploadIdCardFront({
						file: result.tempFilePaths[0]
					}).then(res => {
						uni.hideLoading()
						if (res.code == 200) {
							idCard.idPhoto0 = res.data.appUserPO.idPhotoUrl1.data
							realUser.value = res.data.idCardFontVO
						}
					}).catch(e => {
						uni.hideLoading()
						uni.showToast({
							title: e.msg,
							icon:'none'
						})
					})
				} else if (type === 1) {
					proxy.$api.user.uploadIdCardBack({
						file: result.tempFilePaths[0]
					}).then(res => {
						uni.hideLoading()
						if (res.code == 200) {
							idCard.idPhoto1 = res.data.appUserPO.idPhotoUrl2.data
						}
					}).catch(e => {
						uni.hideLoading()
						uni.showToast({
							title: e.msg,
							icon:'none'
						})
					})
				}
			}
		})
	}
	/**
	 * 协议选择
	 */
	const onchange = (e) => {
		checked.value = e.detail
	}
	/**
	 * 人脸识别
	 */
	const faceCompare = () => {
		if (!checked.value) {
			uni.showToast({
				title: '请勾选上述协议',
				icon: 'none'
			})
		} else {
			if (!realUser.value.name) {
				uni.showToast({
					title: '请先上传身份证',
					icon: 'none'
				})
				return
			}
			uni.navigateTo({
				url: `./faceDetection?name=${realUser.value.name}&idNumber=${realUser.value.idNumber}`
			})
		}
	}
	onLoad((options) => {})
</script>

<style lang="scss" scoped>
	.id-card {
		background-color: #F3F3F3;
		height: 100vh;
		box-sizing: border-box;
		padding: 30rpx;
		.main {
			display: flex;
			flex-flow: row nowrap;
			align-items: center;
			justify-content: space-between;
			.upload {
				flex: 0 1 330rpx;
				height: 201rpx;
				font-size: 30rpx;
				font-weight: 400;
				color: #333333;
				line-height: 42rpx;
				position: relative;
				.default {
					position: absolute;
					left: 0;
					top: 0;
					width: 100%;
					height: 100%;
					image {
						width: 100%;
						height: 100%;
					}
					.default-slot {
						position: absolute;
						left: 0;
						top: 0;
						width: 100%;
						height: 100%;
						text-align: center;
						padding-top: 35rpx;
						.icon-box {
							width: 100rpx;
							height: 100rpx;
							background-color: #B5B5B5;
							border-radius: 50%;
							margin: 0 auto 5rpx;
							::v-deep van-icon {
								position: absolute;
								top: 55rpx;
								left: 50%;
								transform: translateX(-50%);
							}
						}
					}
				}
				.special {
					position: absolute;
					left: 0;
					top: 0;
					width: 100%;
					height: 201rpx;
					border-bottom: 1px solid #ceccca36;
				}
			}
		}
		.protocol {
			margin-top: 55rpx;
			font-size: 26rpx;
			font-weight: 400;
			color: #606266;
			line-height: 42rpx;
			::v-deep .van-checkbox{
				align-items: flex-start;	
			}
		}
		.bottom{
			margin: 60rpx auto 0;
			width: 690rpx;
			height: 98rpx;
			background-color: #CA2915;
			border-radius: 16rpx;
			font-size: 34rpx;
			font-weight: 400;
			color: #FFFFFF;
			line-height: 98rpx;
			text-align: center;
		}
	}
</style>