public function login(){    // 上傳文件路徑    $dir = "./Uploads/temp/";    if(!file_exists($dir)){     mkdir($dir,0777,true);    }    $upload = new /Think/Upload();    $upload->maxSize = 2048000 ;// 設置附件上傳大小    $upload->exts = array('jpg', 'gif', 'png', 'jpeg');// 設置附件上傳類型    $upload->savepath = '';    $upload->autoSub = false;    $upload->rootPath = $dir; // 設置附件上傳根目錄    // 上傳單個文件    $info = $upload->uploadOne($_FILES['file']);    if(!$info) {// 上傳錯誤提示錯誤信息      echo json_encode(array('error'=>true,'msg'=>$upload->getError()),JSON_UNESCAPED_UNICODE);    }else{// 上傳成功 獲取上傳文件信息     $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','student',$options);     // echo json_encode($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 '識別成功' . json_encode($data,JSON_UNESCAPED_UNICODE);      }else{       echo '識別失敗' . $data['score'];      }     }    }   } 

<camera device-position="{{device?'back':'front'}}" flash="off" binderror="error" style="width: 100%; height: 300px;"></camera>     <view class="weui-cells__title" >開關</view>     <view class="weui-cells weui-cells_after-title">       <view class="weui-cell weui-cell_switch">         <view class="weui-cell__bd">切換攝像頭</view>         <view class="weui-cell__ft" >           <switch bindtap="devicePosition" />         </view>       </view>     </view> <button type="primary" bindtap="takePhoto">刷臉登錄</button> 

devicePosition() { this.setData({  device: !this.data.device, }) console.log("當前相機攝像頭為:", this.data.device ? "后置" : "前置"); camera() {  let { ctx, type, startRecord } = this.data; }, data: {  src: null, }, 

takePhoto() {    const ctx = wx.createCameraContext()    ctx.takePhoto({     quality: 'high',     success: (res) => {      this.setData({       src: res.tempImagePath      })      console.log(res)      wx.uploadFile({       url: '', //僅為示例，非真實的接口地址       filePath: this.data.src,       name: 'file',       formData: {       },       success: function (res) {        // var data = res.data        // var json = JSON.parse(data)        console.log(res)        wx.showModal({         title: "提示",         content: res.data,         showCancel: false,         confirmText: "確定"        })       }      })     }    })   },