小程序前端上传图片直传七牛云不存储服务器

 fastadmin文件API接口文件下的common修改默认的upload方法，直接替换即可

  /**
     * 上传文件
     * @ApiMethod (POST)
     * @param File $file 文件流
     */
    public function upload()
    {
        $file = $this->request->file('file');
        if (empty($file)) {
            $this->error(__('No  file  upload  or  server  upload  limit  exceeded'));
        }

        //判断是否已经存在附件
        $sha1 = $file->hash();

        $upload = Config::get('upload');

        preg_match('/(\d+)(\w+)/', $upload['maxsize'], $matches);
        $type = strtolower($matches[2]);
        $typeDict = ['b' => 0, 'k' => 1, 'kb' => 1, 'm' => 2, 'mb' => 2, 'gb' => 3, 'g' => 3];
        $size = (int)$upload['maxsize'] * pow(1024, isset($typeDict[$type]) ? $typeDict[$type] : 0);
        $fileInfo = $file->getInfo();
        $suffix = strtolower(pathinfo($fileInfo['name'], PATHINFO_EXTENSION));
        $suffix = $suffix && preg_match("/^[a-zA-Z0-9]+$/", $suffix) ? $suffix : 'file';

        $mimetypeArr = explode(',', strtolower($upload['mimetype']));
        $typeArr = explode('/', $fileInfo['type']);

        //禁止上传PHP和HTML文件
        if (in_array($fileInfo['type'], ['text/x-php', 'text/html']) || in_array($suffix, ['php', 'html', 'htm'])) {
            $this->error(__('Uploaded  file  format  is  limited'));
        }
        //验证文件后缀
        if ($upload['mimetype'] !== '*' &&
            (
                !in_array($suffix, $mimetypeArr)
                || (stripos($typeArr[0] . '/', $upload['mimetype']) !== false && (!in_array($fileInfo['type'], $mimetypeArr) && !in_array($typeArr[0] . '/*', $mimetypeArr)))
            )
        ) {
            $this->error(__('Uploaded  file  format  is  limited'));
        }
        //验证是否为图片文件
        $imagewidth = $imageheight = 0;
        if (in_array($fileInfo['type'], ['image/gif', 'image/jpg', 'image/jpeg', 'image/bmp', 'image/png', 'image/webp']) || in_array($suffix, ['gif', 'jpg', 'jpeg', 'bmp', 'png', 'webp'])) {
            $imgInfo = getimagesize($fileInfo['tmp_name']);
            if (!$imgInfo || !isset($imgInfo[0]) || !isset($imgInfo[1])) {
                $this->error(__('Uploaded  file  is  not  a  valid  image'));
            }
            $imagewidth = isset($imgInfo[0]) ? $imgInfo[0] : $imagewidth;
            $imageheight = isset($imgInfo[1]) ? $imgInfo[1] : $imageheight;
        }
        $replaceArr = [
            '{year}' => date("Y"),
            '{mon}' => date("m"),
            '{day}' => date("d"),
            '{hour}' => date("H"),
            '{min}' => date("i"),
            '{sec}' => date("s"),
            '{random}' => Random::alnum(16),
            '{random32}' => Random::alnum(32),
            '{filename}' => $suffix ? substr($fileInfo['name'], 0, strripos($fileInfo['name'], '.')) : $fileInfo['name'],
            '{suffix}' => $suffix,
            '{.suffix}' => $suffix ? '.' . $suffix : '',
            '{filemd5}' => md5_file($fileInfo['tmp_name']),
        ];
        $savekey = $upload['savekey'];
        $savekey = str_replace(array_keys($replaceArr), array_values($replaceArr), $savekey);

        $uploadDir = substr($savekey, 0, strripos($savekey, '/') + 1);
        $fileName = substr($savekey, strripos($savekey, '/') + 1);
        //
        $splInfo = $file->validate(['size' => $size])->move(ROOT_PATH . '/public' . $uploadDir, $fileName);
        if ($splInfo) {
            $params = array(
                'admin_id' => 0,
                'user_id' => (int)$this->auth->id,
                'filesize' => $fileInfo['size'],
                'imagewidth' => $imagewidth,
                'imageheight' => $imageheight,
                'imagetype' => $suffix,
                'imageframes' => 0,
                'mimetype' => $fileInfo['type'],
                'url' => $uploadDir . $splInfo->getSaveName(),
                'uploadtime' => time(),
                'storage' => 'local',
                'sha1' => $sha1,
            );
            $attachment = new  Attachment();
            $attachment->data(array_filter($params));
            $attachment->save();
            //  文件上传至七牛云
            $config = get_addon_config('qiniu');
            $filePath = $splInfo->getRealPath() ?: $splInfo->getPathname();
            $policy = array(
                'saveKey' => ltrim($savekey, '/'),
            );
            $auth = new  \Qiniu\Auth($config['accessKey'], $config['secretKey']);
            $token = $auth->uploadToken($config['bucket'], null, $config['expire'], $policy);
            $multipart = [
                ['name' => 'token', 'contents' => $token],
                [
                    'name' => 'file',
                    'contents' => fopen($filePath, 'r'),
                    'filename' => $fileName,
                ]
            ];
            try {
                $client = new  \GuzzleHttp\Client();
                $res = $client->request('POST', $config['uploadurl'], [
                    'multipart' => $multipart
                ]);
                $code = $res->getStatusCode();
                //成功不做任何操作
            } catch (\GuzzleHttp\Exception\ClientException  $e) {
                $attachment->delete();
                unlink($filePath);
                $this->error("上传失败");
            }
            //上传成功后将存储变更为qiniu
            $attachment->storage = 'qiniu';
            $attachment->save();
            \think\Hook::listen("upload_after", $attachment);
            $this->success(__('Upload  successful'), [
                'url' => $uploadDir . $splInfo->getSaveName(),
                'fullurl' => cdnurl($uploadDir . $splInfo->getSaveName(), true)
            ]);
        } else {
            //  上传失败获取错误信息
            $this->error($file->getError());
            Config::set('default_return_type', 'json');
            //必须设定cdnurl为空,否则cdnurl函数计算错误
            Config::set('upload.cdnurl', '');
            $chunkid = $this->request->post("chunkid");
            if ($chunkid) {
                if (!Config::get('upload.chunking')) {
                    $this->error(__('Chunk file disabled'));
                }
                $action = $this->request->post("action");
                $chunkindex = $this->request->post("chunkindex/d");
                $chunkcount = $this->request->post("chunkcount/d");
                $filename = $this->request->post("filename");
                $method = $this->request->method(true);
                if ($action == 'merge') {
                    $attachment = null;
                    //合并分片文件
                    try {
                        $upload = new Upload();
                        $attachment = $upload->merge($chunkid, $chunkcount, $filename);
                    } catch (UploadException $e) {
                        $this->error($e->getMessage());
                    }
                    $this->success(__('Uploaded successful'), ['url' => $attachment->url, 'fullurl' => cdnurl($attachment->url, true)]);
                } elseif ($method == 'clean') {
                    //删除冗余的分片文件
                    try {
                        $upload = new Upload();
                        $upload->clean($chunkid);
                    } catch (UploadException $e) {
                        $this->error($e->getMessage());
                    }
                    $this->success();
                } else {
                    //上传分片文件
                    //默认普通上传文件
                    $file = $this->request->file('file');
                    try {
                        $upload = new Upload($file);
                        $upload->chunk($chunkid, $chunkindex, $chunkcount);
                    } catch (UploadException $e) {
                        $this->error($e->getMessage());
                    }
                    $this->success();
                }
            } else {
                $attachment = null;
                //默认普通上传文件
                $file = $this->request->file('file');
                try {
                    $upload = new Upload($file);
                    $attachment = $upload->upload();
                } catch (UploadException $e) {
                    $this->error($e->getMessage());
                }

                $this->success(__('Uploaded successful'), ['url' => $attachment->url, 'fullurl' => cdnurl($attachment->url, true)]);
            }

        }
    }

注意：

        

后台七牛云插件中需要修改的地方