微信小程序—人脸识别

article/2025/11/4 19:02:28

1.首先你要有一个可以就行人脸识别的服务器，然后就是上传到百度云，百度云人脸识别的API接口全面升级到V3版本，并进行开放测试

2.wxml代码

<camera device-position="{{sxt}}" flash="off" binderror="error" style="width: 100%; height: 300px;"></camera>
<view class="weui-cells weui-cells_after-title">
<view class="weui-cell weui-cell_switch">
<view class="weui-cell__bd"></view>
<input name='sex' value='{{sxt}}'>{{sxt}}</input>
<switch checked bindchange='switch1Change'/>
</view>
</view>
<button type="primary" bindtap="takePhoto">拍照</button>

3.js代码

data: {
sxt: '前置'
},
switch1Change: function (e) {
console.log(e)
var front = '前置'
var back = '后置'
if (this.data.sxt == '前置') {
this.setData({ sxt: back })
} else if (this.data.sxt == '后置') {
this.setData({ sxt: front })
}
},
takePhoto() {
const ctx = wx.createCameraContext()
ctx.takePhoto({
quality: 'high',
success: (res) => {
// console.log(res);
this.setData({
src: res.tempImagePath
})
wx.showLoading({
title:'正在核验身份...',
})
this.setData({logindisabled:true});
wx.uploadFile({
url: 'http://www.swinder.top/server/index.php/home/index/login',
filePath:res.tempImagePath,
name:'file',
success:(res)=>{
wx.hideLoading();
this.setData({logindisabled:false});
var data = res.data
console.log(data);
wx.showModal({
title:'提示',
content:data,
showCancel:false
})
}
})
}
})
}

4.后台php代码

private function init_face(){
$APP_ID=''; //在百度云上查看自己的信息
$API_KEY='';
$SECRET_KEY='';
$dir = APP_PATH . '/face-sdk/';
require_once $dir . 'AipFace.php';
return new \AipFace($APP_ID,$API_KEY,$SECRET_KEY);
}
public function login(){
//上传文件路径
$dir="./Uploads/temp/";
if(!file_exists($dir)){
mkdir($dir,0777,true);
}
$upload = new \Think\Upload();//实例化上传类
$upload->maxSize = 2048000;//设置附件上传大小2m
$upload->exts=array('jpg','gif','png','jpeg');//设置上传类型
$upload->rootPath=$dir;//设置附件上传根目录
$upload->savePath='';//设置附件上传(子)目录
$upload->autoSub=false;
//上传文件
$info = $upload->uploadOne($_FILES['file']);
if(!$info){
//上传错误提示信息
echo json_encode(array('error'=>true,'msg'=>$upload->getError()),JSON_UNESCAPED_UNICODE);
}else{
//上传成功
$file = $dir . $info['savepath'] . $info['savename'];
$image = base64_encode(file_get_contents($file));
$client = $this->init_face();
$options['liveness_control']='NORMAL';
$options['max_user_num']='1';
$ret = $client->search($image,'BASE64',$this->face_group(),$options);
if($ret['error_code']==0){
$user = $ret['result']['user_list'][0];
$no = $user['user_id'];
$score = $user['score'];
if(!empty($no)){
$data = M('student')->field('no,name,sex')->where("no='{$no}'")->find();
if($data){
//查到此学号
$data['score'] = $score;
echo json_encode($data,JSON_UNESCAPED_UNICODE);
}else{
//本地库不存在此学号
echo "本地数据库没有该学生,百度云库信息:个人信息：{$no},分值：{$score}";
}
}
}else{
echo "活体检测失败，".json_encode($ret,JSON_UNESCAPED_UNICODE);
}
}
}