使用ZF2强制下载

Question

我正在尝试使用ZF2强制下载.这是我的代码的片段

 use Zend\Http\Request;
 .....
   public function downloadAction() {
     $response = new Request();
    $response->setHeaders(Request::fromString("Content-Type: application/octet-stream\r\nContent-Length: 9\r\nContent-Disposition: attachment; filename=\"ultimate_remedy_readme.txt\""));


}

现在我收到了这个错误

/var/www/whowantsmymoney/vendor/zendframework/zendframework/library/Zend/Http/Request.php:88

信息:

A valid request line was not found in the provided string

堆栈跟踪:

#0 /var/www/whowantsmymoney/module/Admin/src/Admin/Controller/LanguageController.php(93): Zend\Http\Request::fromString('Content-Type: a...')

Answer 1

此代码可以帮助您进行简单的文件下载.

public function downloadAction() {
    $fileName = 'somefile';

    if(!is_file($fileName)) {
        //do something
    }

    $fileContents = file_get_contents($fileName);

    $response = $this->getResponse();
    $response->setContent($fileContents);

    $headers = $response->getHeaders();
    $headers->clearHeaders()
        ->addHeaderLine('Content-Type', 'whatever your content type is')
        ->addHeaderLine('Content-Disposition', 'attachment; filename="' . $fileName . '"')
        ->addHeaderLine('Content-Length', strlen($fileContents));


    return $this->response;
}

我想这段代码有很多不足之处,但应该在简单的情况下工作,就像我的一样.我不知道你怎么处理块中的文件.也许其他人可以解决一些问题？

编辑 - 发送流

我在这里添加了这个用于提供信息的目的.它可能是强制下载的更好方法,因为它将使用更少的内存.

public function downloadAction() {
    $fileName = 'somefile';

    $response = new \Zend\Http\Response\Stream();
    $response->setStream(fopen($fileName, 'r'));
    $response->setStatusCode(200);

    $headers = new \Zend\Http\Headers();
    $headers->addHeaderLine('Content-Type', 'whatever your content type is')
            ->addHeaderLine('Content-Disposition', 'attachment; filename="' . $fileName . '"')
            ->addHeaderLine('Content-Length', filesize($fileName));

    $response->setHeaders($headers);
    return $response;

Answer 2

感谢@Aydin Hassan的回复,但他的回答中缺少几个重要的标题.小心一点.

完整标头堆栈:

public function downloadAction() {
    $file = 'path/to/file';
    $response = new \Zend\Http\Response\Stream();
    $response->setStream(fopen($file, 'r'));
    $response->setStatusCode(200);
    $response->setStreamName(basename($file));
    $headers = new \Zend\Http\Headers();
    $headers->addHeaders(array(
        'Content-Disposition' => 'attachment; filename="' . basename($file) .'"',
        'Content-Type' => 'application/octet-stream',
        'Content-Length' => filesize($file),
        'Expires' => '@0', // @0, because zf2 parses date as string to \DateTime() object
        'Cache-Control' => 'must-revalidate',
        'Pragma' => 'public'
    ));
    $response->setHeaders($headers);
    return $response;
}