RE: FOP 1.1 to 2.2 Migration - SEVERE Error with External Graphics

Hi Simon

Awesome!!!

I modified the existing FopServlet.java with 1 import statement [import java.io.FileInputStream;] and your lines of code and set the external-graphic to the basic syntax as below and all worked as expected!!!

I have spent the last 5 days reading every post and resource available and tested all possible solutions including various methods to set the Base Directory,  making my own ResourceResolver, and custom Configuration files to no avail (although a good learning experience).

                  <fo:block>
                                                <fo:external-graphic src="graphics/tomcat.gif"/>
                  </fo:block>

Now back to work...

Thank you.

Regards

Graeme Wellington
Pro-Time Building Solutions Pty Ltd
178 Martin Road WALL FLAT SA 5254
Mobile: 0419 808 473
Email: [email protected]<mailto:[email protected]>

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From: Simon Steiner <[email protected]>
Sent: Friday, March 16, 2018 8:47 PM
To: [email protected]
Subject: RE: FOP 1.1 to 2.2 Migration - SEVERE Error with External Graphics

Hi,

I could get round this by using in the fopservlet, but I think it's a security issue allowing filesystem access from tomcat

            public Resource getResource(URI uri) throws IOException {
                if (uri.toASCIIString().startsWith("file:")) {
                    return new Resource(new FileInputStream(uri.getPath()));
                }
                return new Resource(getServletContext().getResourceAsStream(uri.toASCIIString()));
            }
Thanks

From: Graeme Wellington [mailto:[email protected]]
Sent: 16 March 2018 00:12
To: [email protected]<mailto:[email protected]>
Subject: FOP 1.1 to 2.2 Migration - SEVERE Error with External Graphics

More info...

I have several servlets and FOs to test the various combinations:
http://localhost:8080/fop/fop?fo=C:/temp/readme.fo   ; works OK
http://localhost:8080/fop/fop?fo=C:/temp/readmeX.fo ; fails
http://localhost:8080/fop/fopX?fo=C:/temp/readmeX.fo ; fails
http://localhost:8080/fop/fopZ?fo=C:/temp/readmeX.fo ; fails

FopServlet.java                 ; as distributed
FopServletX.java              ; attempt to read custom configuration fop.xml
FopServletZ.java              ; attempt to read custom configuration fop.xml / custom Resolver

Readme.fo         ; as distributed - works with:      http://localhost:8080/fop/fop?fo=C:/temp/readme.fo
ReadmeX.fo       ; external-graphic included

Fop.xml                ; as distributed with base = "."

The batch command generates the PDF successfully (attached):-
"C:\fop-2.2\fop\fop.bat" -fo=C:/temp/readmeX.fo -pdf "C:/temp/FOP-ReadmeX-fo.pdf"  > glw-FO.txt 2>&1


Regards

Graeme Wellington
Pro-Time Building Solutions Pty Ltd
178 Martin Road WALL FLAT SA 5254
Mobile: 0419 808 473
Email: [email protected]<mailto:[email protected]>

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From: Robert Meyer <[email protected]<mailto:[email protected]>>
Sent: Thursday, March 15, 2018 5:58 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: FOP 1.1 to 2.2 Migration - SEVERE Error with External Graphics

It's been a while, but shouldn't it throw a nicer message than an NPE? Maybe something like "Oh, hello. We see you've not entered a path standard URI format. Instead you've entered '<something>'. Please check and try again".

Then again, FOP's never been that user friendly! I might look into it myself.

Robert
________________________________
From: Szeak (Register Man) <[email protected]<mailto:[email protected]>>
Sent: 14 March 2018 13:36
To: [email protected]<mailto:[email protected]>
Subject: Re: FOP 1.1 to 2.2 Migration - SEVERE Error with External Graphics

Hi,

FOP from version 2 using standard URI format for pathes.
So you need to set the pathes in this format also in your FOP config and in FO.
Ie.: /C/Temp/tomcat.gif or ///C/Temp/tomcat.gif

Best regards, Szeak

2018-03-14 03:12 keltezéssel, Graeme Wellington írta:

Hi



I have just migrated to FOP 2.2 - I am using apache-tomcat-8.5.29 / Java 1.8



I am using a FOP servlet to render PDF form XML data source.



I have a basic example that works on FOP 1.1 but not FOP 2.2



http://localhost:8080/fop/fopZ?fo=C:/temp/readme.fo



The readme.fo comes with the FOP distribution.



Without change the servlet works ok and I get a PDF.



When I try and add 1 line to include an image I get SEVERE error as below.



I have tried various permutations if the following lines separately but no luck :



<fo:external-graphic src="C:/Temp/tomcat .gif"/>

OR

                <fo:external-graphic src="tomcat.gif"/>

                OR

                <fo:external-graphic src="../graphics/tomcat.gif"/>

                ...



I have loaded the tomcat.gif at the various locations to match.



However I do not think it is getting that far.



I have a customised configuration file and have set the base as follows:



<base>./</base>





Can anyone help?





Mar 14, 2018 12:06:34 PM org.apache.catalina.core.StandardWrapperValve invoke

SEVERE: Servlet.service() for servlet [FopZ] in context with path [/fop] threw exception [javax.xml.transform.TransformerException: java.lang.NullPointerException] with root cause

java.lang.NullPointerException

                at java.io.FilterInputStream.markSupported(FilterInputStream.java:243)

                at org.apache.xmlgraphics.image.loader.util.ImageUtil.decorateMarkSupported(ImageUtil.java:213)

                at org.apache.xmlgraphics.image.loader.util.ImageUtil.autoDecorateInputStream(ImageUtil.java:228)

                at org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext.createImageSource(AbstractImageSessionContext.java:373)

                at org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext.access$100(AbstractImageSessionContext.java:53)

                at org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext$UnrestrictedFallbackResolver.createSource(AbstractImageSessionContext.java:364)

                at org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext.newSource(AbstractImageSessionContext.java:94)

                at org.apache.xmlgraphics.image.loader.impl.AbstractImageSessionContext.needSource(AbstractImageSessionContext.java:191)

                at org.apache.xmlgraphics.image.loader.cache.ImageCache.needImageInfo(ImageCache.java:123)

                at org.apache.xmlgraphics.image.loader.ImageManager.getImageInfo(ImageManager.java:123)

                at org.apache.fop.fo.flow.ExternalGraphic.bind(ExternalGraphic.java:81)

                at org.apache.fop.fo.FObj.processNode(FObj.java:126)

                at org.apache.fop.fo.FOTreeBuilder$MainFOHandler.startElement(FOTreeBuilder.java:291)

                at org.apache.fop.fo.FOTreeBuilder.startElement(FOTreeBuilder.java:179)

                at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.closeStartTag(ToXMLSAXHandler.java:208)

                at com.sun.org.apache.xml.internal.serializer.ToSAXHandler.flushPending(ToSAXHandler.java:281)

                at com.sun.org.apache.xml.internal.serializer.ToXMLSAXHandler.endElement(ToXMLSAXHandler.java:247)

                at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.endElement(AbstractSAXParser.java:609)

                at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(AbstractXMLDocumentParser.java:183)

                at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:351)

                at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:2784)

                at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)

                at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)

                at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)

                at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)

                at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)

                at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)

                at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)

                at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:641)

                at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:737)

                at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:351)

                at org.apache.fop.servlet.FopServletZ.render(FopServletZ.java:293)

                at org.apache.fop.servlet.FopServletZ.renderFO(FopServletZ.java:232)

                at org.apache.fop.servlet.FopServletZ.doGet(FopServletZ.java:169)

                at javax.servlet.http.HttpServlet.service(HttpServlet.java:635)

                at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)

                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)

                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

                at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

                at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)

                at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)

                at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198)

                at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)

                at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:496)

                at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)

                at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)

                at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:650)

                at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)

                at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:342)

                at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:803)

                at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)

                at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:790)

                at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1459)

                at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)

                at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)

                at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)

                at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)

                at java.lang.Thread.run(Thread.java:745)







Regards



Graeme Wellington

Pro-Time Building Solutions Pty Ltd

178 Martin Road WALL FLAT SA 5254

Mobile: 0419 808 473

Email: [email protected]<mailto:[email protected]>



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