Question

我在SLIM 3中构建应用程序，我需要生成PDF证书。所以我在我的SLIM应用程序中添加了mPDF库扩展。我试图用以下方法生成测试pdf：

use Mpdf\Mpdf;
use Slim\Http\Request;
use Slim\Http\Response;
/**
 * Class GenerateCertificate
 * @package saikatbepari\pdf
 */
 class GeneratePDF
 {

   public function generateCertificate(Request $request, Response $response)
  {
    $response = $response->withHeader( 'Content-type', 'application/pdf' );
    $mpdf = new Mpdf(['tempDir' => '../tmp']);
    $mpdf->WriteHTML('<h1>Hello world!</h1>');
    $mpdf->Output();
  }


}

，我得到的输出是：

任何人都可以帮助我，问题是什么以及如何解决它。任何帮助都会得到满足。

Answer 1

您的Slim框架可能会重置内容类型。尝试从mPDF返回一个字符串并将其设置为您的PSR7响应的正文：

// ...
$body = $mpdf->Output('', 'S');
$stream = \GuzzleHttp\Psr7\stream_for($body);
$response = $response->withBody($stream);

return $response;

Answer 2

这是我的简单解决方案

$app->get('/testing_mpdf/', 'testingMpdf');
function testingMpdf($request, $returned, $args) {
  $mpdf     = new Mpdf();
  $mpdf->WriteHTML('<h1>Hello World!</h1>');
  $mpdf->Output();
  return $returned->withHeader('Content-Type', 'application/pdf');
}

Answer 3

请遵循此规范

$ mpdf =新\ Mpdf \ Mpdf（['tempDir'=> DIR 。'/ tmp']）;     $ url =“ http：//localhost/ephotobook/homelink/login/75100/Screen%20Shot%202019-03-02%20at%2012.32.14%20PM.png”;     $ h =“ 30％”;     $ w =“ 40％”;         $ db = new DbOperation（）;         $ res = $ db-> showimagesbyid（75100）;         $ b = $ res ['data'];
        $ tr =“”;
        foreach（$ b as $ r）{             $ url1 =“ http：// localhost / ephotobook / homelink / login / 75100 /” .rawurlencode（$ r ['Filename']）;             $ tr。=“”;         }     $ html =“                                            这是图像排序

    <div>
        <div>
            .$tr.    
    </div> 
    </body>
    </html>";

    $mpdf->WriteHTML($html);
    //$mpdf->WriteHTML(wireRenderFile('../invoice.php'));
    $mpdf->Output('../pdf/invoice5.pdf', 'F');

SLIM 3的mPDF问题

3 个答案: