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PHP

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<?php
// +----------------------------------------------------------------------
// | OneThink [ WE CAN DO IT JUST THINK IT ]
// +----------------------------------------------------------------------
// | Copyright (c) 2013 http://www.onethink.cn All rights reserved.
// +----------------------------------------------------------------------
// | Author: huajie <banhuajie@163.com>
// +----------------------------------------------------------------------
namespace Home\Model;
use Think\Model;
use Think\Upload;
use Base\Service\OssService;
/**
* 图片模型
* 负责图片的上传
*/
class PictureModel extends Model{
/**
* 自动完成
* @var array
*/
protected $_auto = array(
array('status', 1, self::MODEL_INSERT),
array('create_time', NOW_TIME, self::MODEL_INSERT),
);
/**
* 文件上传
* @param array $files 要上传的文件列表(通常是$_FILES数组
* @param array $setting 文件上传配置
* @param string $driver 上传驱动名称
* @param array $config 上传驱动配置
* @return array 文件上传成功后的信息
*/
public function upload($files, $setting, $driver = 'Local', $config = null)
{
/* 上传文件 */
$setting['callback'] = array($this, 'isFile');
$setting['removeTrash'] = array($this, 'removeTrash');
$Upload = new Upload($setting, $driver, $config);
$info = $Upload->upload($files);
if ($info) {
//文件上传成功,记录文件信息
foreach ($info as $key => &$value) {
/* 记录文件信息 */
/* 已经存在文件记录 */
if (!isset($value['id'])) {
$value['path'] = substr($setting['rootPath'], 1) . $value['savepath'] . $value['savename']; //在模板里的url路径
if ($this->create($value) && ($id = $this->add())) {
$value['id'] = $id;
} else {
//TODO: 文件上传成功,但是记录文件信息失败,需记录日志
unset($info[$key]);
}
}
if (C('OSS_STATUS')) {
$path = explode('/', $value['path']);
$saveFileName = 'icon/' . $path[4];
$localFilePath = '.' . $value['path'];
$ossService = new OssService();
$ossService->upload($localFilePath, $saveFileName);
$dataUrl['oss_url'] = $ossService->getUrl($saveFileName);
$coo = $this->where(['id' => $value['id']])->save($dataUrl);
}
}
return $info; //文件上传成功
} else {
$this->error = $Upload->getError();
return false;
}
}
/**
* 下载指定文件
* @param number $root 文件存储根目录
* @param integer $id 文件ID
* @param string $args 回调函数参数
* @return boolean false-下载失败,否则输出下载文件
*/
public function download($root, $id, $callback = null, $args = null){
/* 获取下载文件信息 */
$file = $this->find($id);
if(!$file){
$this->error = '不存在该文件!';
return false;
}
/* 下载文件 */
switch ($file['location']) {
case 0: //下载本地文件
$file['rootpath'] = $root;
return $this->downLocalFile($file, $callback, $args);
case 1: //TODO: 下载远程FTP文件
break;
default:
$this->error = '不支持的文件存储类型!';
return false;
}
}
/**
* 检测当前上传的文件是否已经存在
* @param array $file 文件上传数组
* @return boolean 文件信息, false - 不存在该文件
*/
public function isFile($file){
if(empty($file['md5'])){
throw new \Exception('缺少参数:md5');
}
/* 查找文件 */
$map = array('md5' => $file['md5'],'sha1'=>$file['sha1'],);
return $this->field(true)->where($map)->find();
}
/**
* 下载本地文件
* @param array $file 文件信息数组
* @param callable $callback 下载回调函数,一般用于增加下载次数
* @param string $args 回调函数参数
* @return boolean 下载失败返回false
*/
private function downLocalFile($file, $callback = null, $args = null){
if(is_file($file['rootpath'].$file['savepath'].$file['savename'])){
/* 调用回调函数新增下载数 */
is_callable($callback) && call_user_func($callback, $args);
/* 执行下载 */ //TODO: 大文件断点续传
header("Content-Description: File Transfer");
header('Content-type: ' . $file['type']);
header('Content-Length:' . $file['size']);
if (preg_match('/MSIE/', $_SERVER['HTTP_USER_AGENT'])) { //for IE
header('Content-Disposition: attachment; filename="' . rawurlencode($file['name']) . '"');
} else {
header('Content-Disposition: attachment; filename="' . $file['name'] . '"');
}
readfile($file['rootpath'].$file['savepath'].$file['savename']);
exit;
} else {
$this->error = '文件已被删除!';
return false;
}
}
/**
* 清除数据库存在但本地不存在的数据
* @param $data
*/
public function removeTrash($data){
$this->where(array('id'=>$data['id'],))->delete();
}
}