HTML 2 PDF conversion problems on linux

[dglaefcke]

Hello,
I am currently facing a problem with the Free Java Library on a linux machine.
I am using the artifact

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<dependency>
            <groupId> e-iceblue </groupId>
            <artifactId>spire.pdf.free</artifactId>
            <version>4.3.0</version>
        </dependency>

and the linux plugin version. There are no access restrictions on any file inside the plugin folder and I am unzipping the linux_plugin archive directly on system startup.

My code looks like this:

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        HtmlConverter.setPluginPath("/home/plugins_linux/");
        HtmlConverter.convert("/home/test.html", "test.pdf", false, 100 * 1000, new Size(283F,425F), new PdfMargins(0));


The exact problem is, that the file will not be created (the application is running as root, so no access restrictions) and if I create it before, it will be empty.
I also tried to get the pdf content via OutputStream instead of filename as parameter, but the stream will also be empty.

System information:
NAME="Alpine Linux"
ID=alpine
VERSION_ID=3.12.4
PRETTY_NAME="Alpine Linux v3.12"


I did read this post from bradjen, but none of the answers worked for me, such as installing the libraries etc.

If I use the same code, but a windows machine and the windows plugin, it works perfectly. But we cant use windows machines in production mode

Thank you and I am looking forward to your reply

[Brian.Li]

Hello,

Thanks for your inquiry.
We recommend that you can test the following commands in the path where you put the plugin on your Alpine Linux system, and tell us your test results, and our Dev team will investigate further.

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echo /usr/local/input.html | ./Html2Pdf "placeholder" "/usr/local/output.pdf" 800 600 0 0 0 0 0

screenshot.png

screenshot2.png

Sincerely,
Brian
E-iceblue support team

[dglaefcke]

Thx for the help.
We get this error message.

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root@f4c16f05c15b:/home/plugins_linux# echo /home/plugins_linux/input.html | ./Html2Pdf "placeholder" "/home/plugins_linux/output.pdf" 800 600 0 0 0 0 0
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
qt.qpa.screen: QXcbConnection: Could not connect to display
Could not connect to any X display.


I guess it is not possible to use the library inside a docker container on a cluster? Without UI ^^

[rachel.lei]

Hello,

Thanks for your feedback.
Kindly note that our QT plugin conversion method requires GUI support. For servers without GUI, please install the xvfb tool first, and then use the xvfb-run command to run your application, as shown below.

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#1. install xvfb
apk add xvfb xvfb-run
#2. use the xvfb-run command to run your application
xvfb-run java -jar xxx.jar


If there are still some problems, please provide your input HTML file for further investigation. Thanks in advance.

Sincerely,
Rachel
E-iceblue support team

[dglaefcke]

This worked! But you have to execute this in bash context (inside a docker container) to get the application logs printed to the console ^^
Thx

[Brian.Li]

Hello,

Thanks for your feedback.

You do not want to execute this command in the bash context, but build the image and run the application directly via dockerfile?
Could you please describe your requirement in more detail to help us look into it further? Thanks in advance.

Sincerely,
Brian
E-iceblue support team