On 9/5/23 19:12, Ashish Singhal wrote:
I am in the Oracle CPQ Cloud team. We license XmlMind’s XML-FO Convertor
to output Docx documents.
Yes. Purchased in 2015. Hence a very old version not supported by us
anymore.
We have a requirement to support proxies for
External images referenced in fo tags. The issue we are facing is that
it doesn’t resolve the external image when there a proxy server on the
envns where the FO conversion is happening.
Sample:
<fo:external-graphic src="url(http://nginx.org/nginx.png)" width="auto"
height="auto" content-width="auto" content-height="auto"/>
Here is what we have tried
* Download the latest XML-FO Convertor
* Install the samples and binaries onto an envn that requires the use
of proxy
* Before setting proxy envn vars
o Curl hangs/blocks
o Converting sample’s userguide.fo with above fo tag also hangs/blocks
* After setting proxy envn vars
o Curl succeeds
o Converting sample’s userguide.fo with above fo tag doesn’t
blocks but outputs the message
* warning: failed to load image "http://nginx.org/nginx.png":
http://www-proxy.us.oracle.com
(file:/Users/ASSINGHA/Downloads/xfc_eval_java-6_4_1/samples/userguide2.fo,
line #428, column #1993)
o It output an empty image file
What is the solution? Is there a workaround?
Setting of proxy vars
* We are tried various options but nothing works for XML-FO Convertor
* Setting of envn vars
* Setting java vars while running the convertor script
* exec java -Dhttp.proxyHost=http://www-proxy.us.oracle.com
-Dhttp.proxyPort=80 -Djava.awt.headless=true
com.xmlmind.fo.converter.Driver
Sorry but we cannot help you. This is a Java question, not a question
related to our product.
XMLmind XML-FO Converter downloads the image files using stock Java
classes, that is, it simply does:
---
(new URL(location)).openStream();
---
You have the full source code of our product. You can check this by
yourself (src/com/xmlmind/fo/util/URLUtil.java,
src/com/xmlmind/fo/graphic/GraphicFactoryImpl.java).
In other words, any Java program which would attempt to download
http://nginx.org/nginx.png in the same working environment would report
exactly the same error as XMLmind XML-FO Converter.
exec java -Dhttp.proxyHost=http://www-proxy.us.oracle.com
-Dhttp.proxyPort=80 ... may be the good approach to solve your problem.
However, make sure to get ALL the system properties (-Dvar=value) RIGHT
given the version of Java you use. See for example, for Java 8,:
https://docs.oracle.com/javase/8/docs/api/java/net/doc-files/net-properties.html#Proxies
Not tested at all, but just to give you a general idea, may be (a)
removing all -Dx=y, (b) setting the environment variables and (c)
-Djava.net.useSystemProxies=true would work for you. Depends on the
operating system and the version of Java you use.
---
PS: Well known Java caveat: Java does not follow HTTP to HTTPS
redirection. Therefore if http://nginx.org/nginx.png redirects to
https://nginx.org/nginx.png or http://www-proxy.us.oracle.com redirects
to https://www-proxy.us.oracle.com, it's unlikely to work.
--
XMLmind FO Converter Support List
xfc-support@xmlmind.com
http://www.xmlmind.com/mailman/listinfo/xfc-support
![http://nginx.org/nginx.png":](http://nginx.org/nginx.png":){kind=link}
