微信小程序人脸识别功能代码实例

 
  
  {{userInfo.tips}}
 
 
 {{motto}}
 

var app = getApp()
Page({
 data: {
  motto: '上传靓照',
  userInfo: {},
  tempFilePaths: ''
 },
 chooseimage: function () {
  var that = this;
  wx.chooseImage({   //选择图片
   count: 1,
   sizeType: ['original', 'compressed'], // 可以指定是原图还是压缩图，默认二者都有
   sourceType: ['album', 'camera'], 
   success: function (res) {
    var tempFilePaths = res.tempFilePaths
    that.setData({
     tempFilePaths: tempFilePaths[0]
    })
    wx.uploadFile({   //上传图片
     url: '', //这里是你php的路径！！
     filePath: tempFilePaths[0],
     name: 'file',
     header: {
      'content-type': 'multipart/form-data'
     },
     success: function (res) {
      console.log("add success", res.data);
      that.uploadImage(res.data);
      wx.showToast({
       title: "图片上传成功",
       icon: 'success',
       duration: 700
      })
     }
    })
   }
  })
 },
 //事件处理函数
 uploadImage: function(picName) {
  var that = this
  wx.showToast({
   title: '鉴定中，请稍候',
   icon: 'loading',
   duration: 2000
})
   wx.request({
    url: '',        //这里是阿里云人脸识别功能php的路径
    data: {
     type: 0,
     image_url: picName,
    },
    header: {
     'Content-Type': 'application/json'
    },
   // filePath: tempFilePaths[0],
   name: 'file',
   success: function(res){
    console.log(res.data) 
    wx.hideToast()
    var data = res.data;
    var sex = data.gender;
    const genders = {
     'Male': '基佬',
     'Female': '小仙女'
    }  
    if(data.face_num == 0){
     that.setData({
      userInfo:{
      tips:'未检测到人脸'
      }
     })
     return
    } else {
     if (sex == 0) {
      that.setData({
       userInfo: {
        tips: data.face_num + '位' + data.age + '岁的' + genders.Female
       }
      })
     } else {
      that.setData({
       userInfo: {
        tips: data.face_num + '位' + data.age + '岁的' + genders.Male
       }
      })
     }
     return
    }  
   }
  })
  },
 onLoad: function () {
  console.log('onLoad');
 
 },
 onShareAppMessage: function () {
  
 }
})

<?php
$akId = "";
$akSecret = "";
$image_url = "";
//更新api信息
$url = "https://dtplus-cn-shanghai.data.aliyuncs.com/face/attribute";
$content = array(      
	'type' => 0,
	'image_url' => $image_url
);
$options = array(
  'http' => array(
    'header' => array(
      'accept'=> "application/json",
      'content-type'=> "application/json",
      'date'=> gmdate("D, d M Y H:i:s \G\M\T"),
      'authorization' => ''
    ),
    'method' => "POST", //可以是 GET, POST, DELETE, PUT
    'content' => json_encode($content)//如有数据，请用json_encode()进行编码
  )
);
$http = $options['http'];
$header = $http['header'];
$urlObj = parse_url($url);
if(empty($urlObj["query"]))
  $path = $urlObj["path"];
else
  $path = $urlObj["path"]."?".$urlObj["query"];
$body = $http['content'];
if(empty($body))
  $bodymd5 = $body;
else
  $bodymd5 = base64_encode(md5($body,true));
$stringToSign = $http['method']."\n".$header['accept']."\n".$bodymd5."\n".$header['content-type']."\n".$header['date']."\n".$path;
$signature = base64_encode(
  hash_hmac(
    "sha1",
    $stringToSign,
    $akSecret, true));
$authHeader = "Dataplus "."$akId".":"."$signature";
$options['http']['header']['authorization'] = $authHeader;
$options['http']['header'] = implode(
  array_map(
    function($key, $val){
      return $key.":".$val."\r\n";
    },
    array_keys($options['http']['header']),
    $options['http']['header']));
$context = stream_context_create($options);
$file = file_get_contents($url, false, $context );
echo($file);
?>

<?php
date_default_timezone_set("Asia/Suzhou"); //设置时区 
$code = $_FILES['file'];//获取小程序传来的图片 
if(is_uploaded_file($_FILES['file']['tmp_name'])) {  
  //把文件转存到你希望的目录（不要使用copy函数）  
  $uploaded_file=$_FILES['file']['tmp_name'];  
  $username = "image"; 
  //我们给每个用户动态的创建一个文件夹  
  $user_path=$_SERVER['DOCUMENT_ROOT']."/WeChatphp/".$username;  //  DOCUMENT_ROOT是你域名配置的根目录，后面的目录可自己调整
 
  //判断该用户文件夹是否已经有这个文件夹  
  if(!file_exists($user_path)) {  
    mkdir($user_path);  
  }  
  $file_true_name=$_FILES['file']['name'];  
	$move_to_file_1 = time().rand(1,1000)."-".date("Y-m-d").substr($file_true_name,strrpos($file_true_name,"."));
  $move_to_file=$user_path."/".$move_to_file_1;//strrops($file_true,".")查找“.”在字符串中最后一次出现的位置  
  if(move_uploaded_file($uploaded_file,iconv("utf-8","gb2312",$move_to_file))) {   
		echo $move_to_file_1;	
  } else {  
    echo "上传失败".date("Y-m-d H:i:sa");  
 
  }  
} else {  
  echo "上传失败".date("Y-m-d H:i:sa");  
}  
?>