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微信小程序刷脸认证(人脸识别,上拉加载,下拉刷新)

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之前已经写好了人脸图片入百度云人脸库,接下来是要将即时拍照的人脸与人脸库的人脸进行对比,比对两张图片中人脸的相似度,返回相似度的值。 获取某个学生的信息// 获取某个学生的信息    public function select($id=”){      $where[‘id’] = $id;      $ret = M(‘student’)-where($where)-find();      return $this-ajaxReturn(array(‘msg’=$ret));    }获取全部学生的信息 // 获取全部学生信息    public function select_index(){      $pagesize=10;      $condition = $_GET[‘condition’];      $where=array();      if(!empty($condition)){        $where[‘a.no|a.name’]=$condition;      }      $data = M(‘student’)-              alias(‘a’)-              where($where)-              // join(‘__IMAGE__ b ON b.no=a.no’)-              page($_GET[‘page’],$pagesize)-              select();      foreach ($data as &$row) {        $path = $row[‘path’];        if(!empty($path)){          if(!file_exists($path)){            $dir = dirname($path);            mkdir($dir,0777,true);            file_put_contents($path, base64_decode($row[‘base64’]));          }          $row[‘path’] = self::HOST . ltrim($path,’.’);        }        unset($row[‘base64’]);      }      $this-ajaxReturn(array(‘data’=$data));    }刷脸登录// 刷脸登录    public function login(){      // 上传文件路径      $dir = “./Uploads/temp/”;      if(!file_exists($dir)){        mkdir($dir,0777,true);      }      $upload = new ThinkUpload();      $upload-maxSize = 2048000 ;// 设置附件上传大小      $upload-exts = array(‘jpg’, ‘gif’, ‘png’, ‘jpeg’);// 设置附件上传类型      $upload-savepath = ”;      $upload-autoSub = false;      $upload-rootPath = $dir; // 设置附件上传根目录      // 上传单个文件      $info = $upload-uploadOne($_FILES[‘file’]);      if(!$info) {// 上传错误提示错误信息          echo json_encode(array(‘error’=true,’msg’=$upload-getError()),JSON_UNESCAPED_UNICODE);      }else{// 上传成功 获取上传文件信息        $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′,’1001′,$options);        // echo json_encode($ret,JSON_UNESCAPED_UNICODE);        // exit;        if($ret[‘error_code’]==0){          $user = $ret[‘result’][‘user_list’][0];          $no = $user[‘user_id’];          $score = $user[‘score’];          if($score=95){            $data = M(‘student’)-where(“no = ‘{$no}'”)-find();            $data[‘score’] = $score;            // $data[‘name’] = json_decode($data[‘name’],true);            // $data[‘sex’] = json_decode($data[‘sex’],true);            echo ‘识别成功’ . json_encode($data,JSON_UNESCAPED_UNICODE);          }        }      }    }拍照页面view class=’camera’切换摄像头  view class=’weui-cell_ft’          switch checked bindchange=’switch1Change’/switch  /view/view view class=’photo’    camera device-position=”{{camera}}” flash=”off” binderror=”error” style=”width: 100%; height: 300px;”/camera    button type=”primary” bindtap=”takePhoto”拍照/button/viewjs// pages/camera/camera.jsPage({  data: {    src: null  },  switch1Change: function (e) {    if (e.detail.value) {      this.setData({ camera: ‘front’ })    } else {      this.setData({ camera: ‘back’ })    }  },  takePhoto() {    const ctx = wx.createCameraContext()    ctx.takePhoto({      quality: ‘high’,      success: (res) = {        this.setData({          src: res.tempImagePath        })        wx.uploadFile({          url: ‘http://****.top/program-php/server/index.php/home/index/login’, //仅为示例,非真实的接口地址          filePath: this.data.src,          name: ‘file’,          formData: {          },          success: function (res) {            // var data = res.data            console.log(res)            wx.showModal({              title: ‘提示’,              content: res.data,              showCancel:false,              confirmText:’确定’            })          }        })      }    })  },  error(e) {    console.log(e.detail)  },在学生列表页面需要实现页面的下拉刷新和上拉加载功能onPullDownRefresh,页面相关事件处理函数–监听用户下拉动作onReachBottom,页面上拉触底事件的处理函数//获取应用实例const app = getApp()var page = 1;var isfinish = false;//加载完毕function loadmore(that){  if(isfinish) return;  wx.showLoading({    title: ‘正在加载中’,  })  wx.request({    url: ‘http://*****.top/program-php/server/index.php/home/index/select_index’,    data: {      page:page,      condition:that.data.condition    },    success: (res) = {      console.log(res.data.data);      var data =res.data.data;      wx.hideLoading();      if(data.length0){        var student=that.data.student;        for(var i = 0;idata.length;i++){          student.push(data[i]);        }        that.setData({student:student});        page++;      }else{        isfinish = true;      }      wx.stopPullDownRefresh();    }  })}Page({  data: {    student: [],    inputShowed: false,    inputVal: “”,    condition:”  },  //搜索框  showInput: function () {    this.setData({      inputShowed: true    });  },  hideInput: function () {    this.setData({      inputVal: “”,      inputShowed: false,      condition:”,      student:[]    });    page=1    loadmore(this)  },  clearInput: function () {    this.setData({      inputVal: “”    });  },  inputTyping: function (e) {    this.setData({      inputVal: e.detail.value    });  },  onPullDownRefresh: function () {   page = 1;   isfinish = false;   this.setData({ student: [] });   loadmore(this);  },  onReachBottom: function () {    var that = this;    loadmore(that);    console.log(page)  },  formSubmit:function(e){    console.log(e.detail.value.condition);    this.setData({condition:e.detail.value.condition});    var that = this    page = 1    this.setData({student:[]})    loadmore(that)  },  onShow: function(){   loadmore(this)  }})

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