duhui/application/api/controller/Upload.php

<?php

// +----------------------------------------------------------------------
// | ThinkAdmin
// +----------------------------------------------------------------------
// | 版权所有 2014~2019 广州楚才信息科技有限公司 [ http://www.cuci.cc ]
// +----------------------------------------------------------------------
// | 官方网站: http://demo.thinkadmin.top
// +----------------------------------------------------------------------
// | 开源协议 ( https://mit-license.org )
// +----------------------------------------------------------------------
// | gitee 代码仓库：https://gitee.com/zoujingli/ThinkAdmin
// | github 代码仓库：https://github.com/zoujingli/ThinkAdmin
// +----------------------------------------------------------------------

namespace app\api\controller;

use app\common\controller\Api;
use library\File;

/**
 * @title OSS对象存储
 * @controller Upload
 * @group common
 */
class Upload extends Base
{

    public function upload()
    {
        if (!($file = $this->getUploadFile()) || empty($file)) {
            $this->error('文件上传异常，文件可能过大或未上传！');
        }
        if (!$file->checkExt(strtolower(sysconf('storage_local_exts')))) {
            $this->error('文件上传类型受限，请在后台配置！');
        }
        if ($file->checkExt('php,sh')) {
            $this->error('可执行文件禁止上传到本地服务器！');
        }
        $this->safe = boolval(input('safe'));
        $this->uptype = $this->getUploadType();
        $this->extend = pathinfo($file->getInfo('name'), PATHINFO_EXTENSION);
        $name = File::name($file->getPathname(), $this->extend, '', 'md5_file');
        $info = File::instance($this->uptype)->save($name, file_get_contents($file->getRealPath()), $this->safe);
        if (is_array($info) && isset($info['url'])) {
            $url = $this->safe ? $name : $info['url'];
            $this->success('成功',$url);
        } else {
            $this->error('文件处理失败，请稍候再试！');
        }
    }
    /**
     * 获取本地文件对象
     * @return \think\File
     */
    private function getUploadFile()
    {
        try {
            return $this->request->file('file');
        } catch (\Exception $e) {
            $this->error(lang($e->getMessage()));
        }
    }

    /**
     * 获取文件上传方式
     * @return string
     * @throws \think\Exception
     * @throws \think\exception\PDOException
     */
    private function getUploadType()
    {
        $this->uptype = input('uptype');
        if (!in_array($this->uptype, ['local', 'oss', 'qiniu'])) {
            $this->uptype = sysconf('storage_type');
        }
        return $this->uptype;
    }
    /**
     * @title 获取配置
     * @desc 获取配置
     * @author QGF
     * @url /api/Upload/getSignedUrl
     * @method GET
     * @tag 配置信息
     */
    public function getSignedUrl(){

        $type=$this->request->get('type');
        $data=$this->getPolicy($type.'/');
        $this->success('操作成功',$data);
    }
    protected $id= 'LTAI5tDNASTjwM9mDSGckY3N';
    protected $key= 'nAKY40GjGz4hf5A9RpoffDmaYWNL3y';
    protected $host = 'https://zjth2021.oss-cn-beijing.aliyuncs.com';

    public function getPolicy($path,$maxSize=5000000){
        $now = time();
        $expire = 600; //设置该policy超时时间是10s. 即这个policy过了这个有效时间，将不能访问
        $end = $now + $expire;
        $expiration = $this->_gmt_iso8601($end);
        $policy = [
            'expiration'=>$expiration,
            'conditions'=>[
                ['content-length-range', 1, $maxSize],
                ['starts-with', '$key', $path],
            ]
        ];
        $policy = json_encode($policy);
        $policy = base64_encode($policy);
        $signature = base64_encode(hash_hmac('sha1', $policy, $this->key, true));

        $response = array();
        $response['OSSAccessKeyId'] = $this->id;
        $response['policy'] = $policy;
        $response['Signature'] = $signature;
        $response['host'] = $this->host;
        $response['expire'] = $end;
        $response['success_action_status'] = 200;
        //这个参数是设置用户上传指定的前缀
        $response['key'] = $path;
        return $response;
    }
    protected function _gmt_iso8601($time) {
        $dtStr = date("c", $time);
        $mydatetime = new \DateTime($dtStr);
        $expiration = $mydatetime->format(\DateTime::ISO8601);
        $pos = strpos($expiration, '+');
        $expiration = substr($expiration, 0, $pos);
        return $expiration."Z";
    }
}