Laravel 5.1 Snappy pdf 图像未在 pdf 文件中呈现
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Laravel 5.1 Snappy pdf image not rendering in pdf file
提问by karmendra
I am using barryvdh/laravel-snappyto generate pdf file. I have two image files 1. yourlogohere.png is in public/image/ folder and 2. logo2.png is in folder other than public i.e. storage/app/logo and to get this file I defined a route (www.example.org/logo/logo.png) and use following code to access it.
我正在使用barryvdh/laravel-snappy生成 pdf 文件。我有两个图像文件 1. yourlogohere.png 位于 public/image/ 文件夹中，2. logo2.png 位于 public 以外的文件夹中，即 storage/app/logo 并为了获取此文件，我定义了一个路径（www.example.org /logo/logo.png) 并使用以下代码访问它。
public function logo($filename)
{
$file = Storage::disk('local_logo')->get($filename);
$mime = 'image/png';
return (new Response($file, 200))->header('Content-Type', $mime);
}
Problem:
问题：
When I use following code to generate pdf from the html containing the first file, pdf contains the yourlogohere.png image
当我使用以下代码从包含第一个文件的 html 生成 pdf 时，pdf 包含 yourlogohere.png 图像
$snappy = App::make('snappy.pdf');
$html='<img src="http://www.example.org/images/yourlogohere.png" class="img-responsive" alt="Your Logo Here">';
$snappy->generateFromHtml($html, $path,[],$overwrite = true);
But when I do exact same thing for the second file, pdf does not render the image.(When I open the link http://www.example.org/logo/logo2.pngin browser I get the image). What am I missing?
但是当我对第二个文件做完全相同的事情时，pdf 不会呈现图像。（当我http://www.example.org/logo/logo2.png在浏览器中打开链接时，我得到了图像）。我错过了什么？
$snappy = App::make('snappy.pdf');
$html='<img src="http://www.example.org/logo/logo2.png" class="img-responsive" alt="Your Logo Here">';
$snappy->generateFromHtml($html, $path,[],$overwrite = true);
Thanks,
谢谢，
K
钾
回答by Marius Stanciu
You can also do:
你也可以这样做：
<img src="data:image/jpeg;base64,
{{ base64_encode(@file_get_contents(url('your.image.url'))) }}">
回答by karmendra
I think I got the what the problem is, the route to access the image is via auth, even when user is logged in while accessing the snappy, the wkhtmltopdf exe runs in a shell that is totally different session. Now the right fix would be to be embed the image in the html that is sent to snappy instead of the link, Which I am not sure how I will do? Any suggestions welcome there.
我想我明白了问题所在，访问图像的路由是通过身份验证的，即使用户在访问 snappy 时登录，wkhtmltopdf exe 也会在完全不同的会话的 shell 中运行。现在正确的解决方法是将图像嵌入到发送到 snappy 而不是链接的 html 中，我不确定我会怎么做？欢迎任何建议。
Update:I as able to convert the image to data:image/png;base64, and embed it in html.
更新：我能够将图像转换为 data:image/png;base64，并将其嵌入到 html 中。
$html = view('mytemplate.default', compact('variable1', 'variable2'))->render();
/*Convert logo image to base64 before pdf conversion*/
//search for <img src="http://example.org/mytemplate/logo/logo1.png">" and replace the src with data:image/png;base64,
$search = '/(<img\s+src=["\'])([^"\']+)(\/mytemplate\/logo\/)(.*)(\.)(.*?)(["\']\s+[^>]+>)/';
$html = preg_replace_callback($search, function ($matches) use ($invoicedetail) {
$filename = $matches[4] . $matches[5] . $matches[6];
$file = Storage::disk('local_logo')->get('yourlogohere.png');
$mime = "image/png";
$mytemplate = MyTemplate::where('logo_filename', '=', $filename)->first();
if (!empty($mytemplate)) {
$file = Storage::disk('local_logo')->get($mytemplate->logo_filename);
$mime = $mytemplate->logo_mime;
}
$base64 = 'data:' . $mime . ';base64,' . base64_encode($file);
return $matches[1] . $base64 . $matches[7];
}, $html);
$pdf_filename = 'template' . $mytemlpate->id . '.pdf';
$path = storage_path('app' . DIRECTORY_SEPARATOR . 'templates' . DIRECTORY_SEPARATOR . $filename);
$snappy = App::make('snappy.pdf');
