HTML to PDF Generation - UnsatisfiedLinkError-Unable to load library error

[srikanthp689160]

Hi,

We are using third party library(io.woo.htmltopdf) library to generate PDF out of AEM web page which works fine in localhost publish instance(on windows machine) but in QA or Pre-Prod environments which are on linux box, we see below error

java.util.concurrent.ExecutionException: java.lang.UnsatisfiedLinkError: Unable to load library '/tmp/io.woo.htmltopdf/wkhtmltox/0.12.5/libwkhtmltox.so': Native library (tmp/io.woo.htmltopdf/wkhtmltox/0.12.5/libwkhtmltox.so) not found in resource path (crx-quickstart/app/cq-quickstart-6.5.0-standalone-quickstart.jar)

Can anyone let us know how this issue can be fixed?

We have added below dependencies to the maven project

<dependency>
<groupId>io.woo</groupId>
<artifactId>htmltopdf</artifactId>
<version>1.0.8</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>net.java.dev.jna</groupId>
<artifactId>jna</artifactId>
<version>4.5.2</version>
</dependency>

[Anudeep_Garnepudi]

Hi @srikanthp689160 

Check the below link and try adding the native dependencies.

https://github.com/wooio/htmltopdf-java/blob/master/README.md#troubleshooting

Hope this will resolve your issue.

AG

[srikanthp689160]

@Anudeep_Garnepudi, i could not understand how to check if dependency packages are installed? Is it on AEM instance? or Linux?

[Anudeep_Garnepudi]

@srikanthp689160 In AEM itself as part of your bundle. Try to add in <Embed-Dependency>dependencies</Embed-Dependency> tag.

[srikanthp689160]

@Anudeep_Garnepudi, i have already added them in core pom.xml as below for the two dependencies which we have included

Include-Resource: htmltopdf-1.0.8.jar,jna-4.5.2.jar

Bundle-ClassPath: ., htmltopdf-1.0.8.jar,jna-4.5.2.jar

In a similar way, we need to add for the below native libraries?

• libc6 (or glibc)
• libx11
• libxext
• libxrender
• libstdc++
• libssl1.0
• freetype
• fontconfig

[Anudeep_Garnepudi]

Yes

[srikanthp689160]

@Anudeep_Garnepudi, I could not find maven dependency for any of the below native libraries. Can you please help me on how to get that info?

[Anudeep_Garnepudi]

@srikanthp689160 I think they are not JAR files but packages that needs to be installed. Google each package for more details.

[Ankur_Khare · Accepted solution]

Could you pls confirm if you are using the same java version on local and other environments?

try to use the same java version in ur local and see

[srikanthp689160]

@Ankur_Khare, locahost is on Java 8 where as QA and Pre-Prod are on Java 11.

[Ankur_Khare]

try to use the same java version in ur local and see

[srikanthp689160]

@Ankur_Khare, update from java 8 to 11 in my local machine might take some time. While i am waiting for java version upgrade, since QA and Stage environments are on Java 11, what can be done to get htmltopdf api working? Any suggestions on this?

[Ankur_Khare]

you can refer this link https://www.iditect.com/how-to/55020264.html