public function upload(){
    // 获取表单上传文件 例如上传了001.jpg
    $file = request()->file('image');
    $picture=model("Picture");
    $turepath = $file->getRealPath();
    $md5path=md5_file($turepath);
    $shalpath=sha1_file($turepath);
    $map["md5"]=$md5path;
    $map["sha1"]=$shalpath;
    /*判断是否有相同图片上传过了*/
    $image=$picture->find($map);
    if($image){
        $this->output_data(200,'success',array('img'=>'http://'.$_SERVER['HTTP_HOST'].$image["path"],"id"=>$image["id"]));
    }
     //判断文件类型
    if(!count($file)){
        $this->output_data(-1,'图片不能为空!');
    }
    $type=$file->checkImg();
    if(!$type){
        $this->output_data(-1,'图片类型不正确!');
    }

    // 移动到框架应用根目录/public/uploads/ 目录下
    $info = $file->move(ROOT_PATH . 'public' . DS . 'uploads');
    if($info){
        $path = $info->getSaveName();
        $data=array();
        $img_path='http://'.$_SERVER['HTTP_HOST'].'/uploads/'.$path;
        $type=$info->getExtension();
        $type="image/".$type;
        $data["path"]='/uploads/'.$path;
        $data["type"]=$type;
        $data["status"]=1;
        $data["md5"]=$md5path;
        $data["sha1"]=$shalpath;

        $result=$picture->insert($data);
        $this->output_data(200,'success',array('img'=>$img_path,"id"=>$result));
        /*echo $path;
        echo "<br>";
        // 输出 42a79759f284b767dfcb2a0197904287.jpg
        echo $info->getFilename();
        echo "<br>";
        输出 42a79759f284b767dfcb2a0197904287.jpg*/
        echo $info->getPathName();
    }else{
        // 上传失败获取错误信息
        $this->output_data(-1,'提交失败!');
    }
}