ZF2的DOMPDF中的图像错误 [英] Image error in DOMPDF for ZF2

问题描述

大家好，欢迎光临，对不起我的英语而不是我的主要语言。我也是Zend Framework 2的初学者。
当我尝试在我的网页中显示图像（带有apache2的虚拟主机，桌面中的文件夹）时，ZF2中的DOMPDF出现了问题。例如：

Hello everyone and welcome, sorry about my english not my main language. I'm a beginner on Zend Framework 2 also. I got an issue with DOMPDF in ZF2, when i try to show an image in my web page (virtualhost with apache2, the folder in desktop). For example:

<img src="/home/luifer/logo_uca.png" alt="logo_uca" />

出现错误：

[2014年5月18日星期日12：28：45.023452] [：error] [pid 7195] [client 127.0.0.1:57089] PHP致命错误：消息'No block-的未捕获异常'DOMPDF_Exception'找到了一级父级。不好。 。在/home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/inline_positioner.cls.php:37\nStack trace：\n＃0 / home / luifer /桌面/ zf2-tutorial /供应商/dompdf/dompdf/include/frame_decorator.cls.php(700）：Inline_Positioner-> position（）\n＃1 / home / luifer / Desktop / zf2-tutorial / vendor / dompdf / dompdf /include/inline_frame_reflower.cls.php(36）：Frame_Decorator-> position（）\n＃2 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/frame_decorator.cls.php(711） ：Inline_Frame_Reflower-> reflow（NULL）\n＃3 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/page_frame_reflower.cls.php(123）：Frame_Decorator-> reflow（）\n ＃4 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/frame_decorator.cls.php(711）：Page_Frame_Reflower-> reflow（NULL）\n＃5 / home / luifer / Desktop / zf2 -tutorial / vendor / dompdf / dompdf / include / dompdf.cls.php（949）：Frame_Decorator-> reflow（）\n＃6 / home / luifer / Desktop / zf2-tutorial / vendor / dino / dompdf-module / src /在/ home / luifer / Desktop / zf2-tuto中第37行上的rial / vendor / dompdf / dompdf / include / inline_positioner.cls.php

[Sun May 18 12:28:45.023452 2014] [:error] [pid 7195] [client 127.0.0.1:57089] PHP Fatal error: Uncaught exception 'DOMPDF_Exception' with message 'No block-level parent found. Not good.' in /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/inline_positioner.cls.php:37\nStack trace:\n#0 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/frame_decorator.cls.php(700): Inline_Positioner->position()\n#1 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/inline_frame_reflower.cls.php(36): Frame_Decorator->position()\n#2 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/frame_decorator.cls.php(711): Inline_Frame_Reflower->reflow(NULL)\n#3 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/page_frame_reflower.cls.php(123): Frame_Decorator->reflow()\n#4 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/frame_decorator.cls.php(711): Page_Frame_Reflower->reflow(NULL)\n#5 /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/dompdf.cls.php(949): Frame_Decorator->reflow()\n#6 /home/luifer/Desktop/zf2-tutorial/vendor/dino/dompdf-module/src/ in /home/luifer/Desktop/zf2-tutorial/vendor/dompdf/dompdf/include/inline_positioner.cls.php on line 37

当我在浏览器中打开同一页面时

When i open the same page on the browser manually (right click open page with browser) the image shows in the page.

以防万一，我的控制器功能为：

Just in case, my controller function:

    public function extraordinarioAction()
{
    //quitar de la bd

    $pdf = new PdfModel();

    return $pdf;

}

我的查看页面是 extraordinario.phtml 并带有html页面。我尝试了一个带有加载图像的简单页面，但没有任何显示，只有一个空白页面出现了此错误。

And my view page is extraordinario.phtml with a html page on it. I tried a simple page with a loading image and nothing shows, just a blank page with this error.

有人知道如何解决此问题吗？我已经做了一些事情，例如启用 mbstring 。

Anyone knows how to solve this problem? I already did some things like enabling the mbstring.

有什么想法吗？

推荐答案

其他答案：由于DomPDF无法读取文件，因此可能会出现此问题。由于您的Web应用程序中正在运行DomPDF，因此php可能拥有该进程（例如 www-data ）。该用户应该对您要阅读的图像具有读取权限。

Per the other answer: the issue might be raised because DomPDF cannot read the file. Since you have DomPDF running in your web application, php probably is owning the process (e.g. www-data). This user should have read access to the image you want to read.

另一个问题是您的图像位于 / home / luifer 。有时其他用户无法读取用户目录。

Another issue is that you have the image inside /home/luifer. Sometimes user directories are unreadable for other users.

因此：您最好的选择是将图像放置在共享位置（例如 / var中的某个位置） / www ）。否则，请确保该文件可被其他人读取（ chmod a + r logo_uca.png ），并且所有父目录都可被其他人执行（ chmod a + x / home / luifer ）。请检查每个目录，说桌面上的文件夹，因此，如果文件位于 / home / luifer / Desktop 中，请检查 Desktop 文件。

So: your best option is to place the image in a shared location (e.g. somewhere in /var/www). Otherwise, make sure the file is readable for others (chmod a+r logo_uca.png) and all parent directories are executable for others (chmod a+x /home/luifer). Please check every directory, you say "the folder in desktop" so if your file is placed in /home/luifer/Desktop, check the Desktop file as well.

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