首先是小程式使用者端的頁面

<camera device-position="{{position}}" flash="off" binderror="error" style="width: 100%; height: 300px;"></camera>
<view class="weui-cell__ft" >
  <switch checked bindchange='switch1Change' style='margin:20rpx;'/>
</view>
<button type="primary" bindtap="takePhoto">刷臉登入</button>
 

接下來就是當點選刷臉登入時，可以看到綁定了一個事件  takePhone  此時在此事件中呼叫已經寫好的介面在  .js中實現登入

js程式碼

takePhoto() {
    const ctx = wx.createCameraContext()
    ctx.takePhoto({
      quality: 'high',
      success: (res) => {
        var tempImagePath = res.tempImagePath;
        // console.log(tempImagePath);

        wx.showLoading({
          title: '正在核驗身份....',
        })
        this.setData({logindisabled:true})
        wx.uploadFile({
          url: app.globalData.url.login, //僅為示例，非真實的介面地址
          filePath: tempImagePath,
          header:{
            Cookie: wx.getStorageSync('session_id')
          },
          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
            })
            //do something
          }
        })
      }
    })
  },
 

呼叫的介面

//刷臉登入
    public function login(){
        $dir = "./Uploads/temp/";
        if(!file_exists($dir)){
            mkdir($dir, 0777, true);
        }
        $upload = new \Think\Upload();// 例項化上傳類
        $upload->maxSize = 3145728 ;// 設定附件上傳大小
        $upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 設定附件上傳型別
        $upload->rootPath = $dir; // 設定附件上傳根目錄
        $upload->savePath = ''; // 設定附件上傳（子）目錄
        $upload->autoSub = false;
        // 上傳檔案
        $info = $upload->uploadOne($_FILES['file']);
        if(!$info) {// 上傳錯誤提示錯誤資訊
            // return $this->ajaxReturn(array('error'=>true,'msg'=>$upload->getError()));
            return json_encode(array('error'=>true,'msg'=>$upload->getError()),JSON_UNESCAPED_UNICODE);
        }else{// 上傳成功 獲取上傳檔案資訊
            // return $this->ajaxReturn(array('error'=>false,'msg'=>'ok'));
            $file = $dir . $info['savepath'] . $info['savename'];
            $image = base64_encode(file_get_contents($file));
            // 呼叫人臉檢測
            $client = $this->init_face();
            $options['liveness_control']='NORMAL';
            $options["max_face_num"] = 1;
            
            $ret = $client->search($image,'BASE64','pingjiao',$options);
            // echo json_encode($ret,JSON_UNESCAPED_UNICODE);
            // exit;

             if($ret['error_code']==0){
                $user=$ret['result']['user_list'][0];
                $no=$user['user_id'];
                $score=$user['score'];

                if(!empty('no')){
                    $data=M('student')->field('no,name,sex')->where("no='{$no}'")->find();

                    if($data){
                        $data['score']=$score;
                        if($score>95){
                            echo '姓名：'.$data['name'];
                        }else{
                            echo json_encode($data,JSON_UNESCAPED_UNICODE);
                        }
                    }else{
                        echo "本地資料庫沒有該學生，百度雲資訊：個人資訊：{$no}, 分值：{$score}";
                    }
                }


            }else{
                echo '活體檢驗失敗，'.json_encode($ret,JSON_UNESCAPED_UNICODE);
            }

        }
    }