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Posted to users@pdfbox.apache.org by Lachlan Deck <la...@gmail.com> on 2021/06/10 01:25:54 UTC
Re: java.lang.NoClassDefFoundError: Could not initialize class
org.apache.pdfbox.pdmodel.PDDocument
Hey Aravinth,
Just to report back after a couple of months of trying this… it seems to be working for us.
Thanks!
Cheers,
Lachlan Deck
> On 10 Apr 2021, at 10:54 pm, aravinth thangasami <ar...@gmail.com> wrote:
>
> We have faced a similar exception for PDDocument while loading ICC_Profile
> getInstance, which is not thread-safe.
> We solved by loading PDDocument class by ourselves during start-up manually
> to avoid thread issues.
> Hope it helps.
>
> Thanks
> Aravinth.
>
>
> On Sat, Apr 10, 2021 at 2:25 PM Tilman Hausherr <TH...@t-online.de>
> wrote:
>
>> It should be thread-safe. To me it looks like a class loader problem
>> (NoClassDefFoundError), sadly this is an unknown territory for me.
>>
>> Here's an interesting answer on this topic, although it has 0 upvotes
>> https://stackoverflow.com/a/32478934/535646
>>
>> Tilman
>>
>> Am 09.04.2021 um 03:33 schrieb Lachlan Deck:
>>> Thanks Andreas,
>>>
>>> That’s an interesting idea.
>>>
>>> So are you suggesting that if, say, two parallel/concurrent threads are
>> attempting to load the same document (or same effective document—as we’re
>> passing a byte array into PDDocument.load()) that this could be the cause?
>>>
>>> i.e., is PDDocument.load not thread-safe?
>>>
>>> Cheers,
>>> Lachlan
>>>
>>>> On 8 Apr 2021, at 4:18 pm, Andreas Lehmkuehler <an...@lehmi.de>
>> wrote:
>>>>
>>>> Hi,
>>>>
>>>> could be an issue with the static initialization of PDDocument due to
>> the java.util.concurrent.ExecutionException but this is just a wild guess.
>>>>
>>>> We need a test case to reproduce this but I'm afraid that isn't that
>> easy as concurrency issues are likely not deterministic. But maybe someone
>> comes up with an idea or better a test case.
>>>>
>>>> Andreas
>>>>
>>>> Am 07.04.21 um 12:43 schrieb Lachlan Deck:
>>>>> Hi all,
>>>>> We’re periodically seeing the above exception in a spring-boot api
>> using PDFBox 2.0.21.
>>>>> When that occurs the only remedy appears to be restarting the api,
>> after which it hums along fine for a day and then hits this error again.
>>>>> We’re producing pdfs with jasper (plus taking some optional custom
>> pdfs), then using PDFBox to overlay or stitch things together into a final
>> pdf.
>>>>> Does anyone know what might cause this to happen, and if it’s
>> potentially fixed by the recent 2.0.23 release?
>>>>> our.springboot.api.exception.RenderException: failed to render a
>> template
>>>>> at our.springboot.api.Rendering...
>>>>> at java.base/java.util.stream.ReferencePipeline$3$1.accept(Unknown
>> Source)
>>>>> at
>> java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(Unknown
>> Source)
>>>>> at java.base/java.util.stream.AbstractPipeline.copyInto(Unknown
>> Source)
>>>>> at
>> java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(Unknown Source)
>>>>> at
>> java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(Unknown
>> Source)
>>>>> at java.base/java.util.stream.AbstractPipeline.evaluate(Unknown
>> Source)
>>>>> at java.base/java.util.stream.ReferencePipeline.collect(Unknown
>> Source)
>>>>> ...
>>>>> at jdk.internal.reflect.GeneratedMethodAccessor193.invoke(Unknown
>> Source)
>>>>> at
>> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(Unknown
>> Source)
>>>>> at java.base/java.lang.reflect.Method.invoke(Unknown Source)
>>>>> at
>> org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:190)
>>>>> at
>> org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:138)
>>>>> at
>> org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:105)
>>>>> at
>> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:878)
>>>>> at
>> org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:792)
>>>>> at
>> org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87)
>>>>> at
>> org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1040)
>>>>> at
>> org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943)
>>>>> at
>> org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006)
>>>>> at
>> org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909)
>>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
>>>>> at
>> org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883)
>>>>> at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
>>>>> 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:53)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at brave.servlet.TracingFilter.doFilter(TracingFilter.java:68)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at
>> org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100)
>>>>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at
>> org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93)
>>>>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at brave.servlet.TracingFilter.doFilter(TracingFilter.java:87)
>>>>> at
>> org.springframework.cloud.sleuth.instrument.web.LazyTracingFilter.doFilter(TraceWebServletAutoConfiguration.java:139)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at
>> org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:93)
>>>>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at
>> org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201)
>>>>> at
>> org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
>>>>> at
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
>>>>> at
>> org.cloudfoundry.router.ClientCertificateMapper.doFilter(ClientCertificateMapper.java:79)
>>>>> 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:202)
>>>>> at
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
>>>>> at
>> org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541)
>>>>> at
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:139)
>>>>> at
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
>>>>> at
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74)
>>>>> at
>> org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:747)
>>>>> at
>> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
>>>>> at
>> org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:373)
>>>>> at
>> org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
>>>>> at
>> org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:868)
>>>>> at org.apache.tomcat.util.net
>> .NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1589)
>>>>> at org.apache.tomcat.util.net
>> .SocketProcessorBase.run(SocketProcessorBase.java:49)
>>>>> at
>> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>>>>> at
>> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>>>>> at
>> org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
>>>>> at java.base/java.lang.Thread.run(Unknown Source)
>>>>> Caused by: java.util.concurrent.ExecutionException:
>> java.lang.NoClassDefFoundError: Could not initialize class
>> org.apache.pdfbox.pdmodel.PDDocument
>>>>> at java.base/java.util.concurrent.FutureTask.report(Unknown Source)
>>>>> at java.base/java.util.concurrent.FutureTask.get(Unknown Source)
>>>>> at our.springboot.api.v3.service.FooBar
>>>>> ... 76 common frames omitted
>>>>> Caused by: java.lang.NoClassDefFoundError: Could not initialize class
>> org.apache.pdfbox.pdmodel.PDDocument
>>>>> at
>> our.springboot.api.domain.PDDocumentLoader.load(PDDocumentLoader.java:14)
>>>>> …
>>>>> at
>> org.springframework.cloud.sleuth.instrument.async.TraceCallable.call(TraceCallable.java:71)
>>>>> at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
>>>>> at
>> java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
>>>>> at
>> java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
>>>>> ... 1 common frames omitted
>>>>> Kind regards,
>>>>> Lachlan Deck
>>>>> ---------------------------------------------------------------------
>>>>> To unsubscribe, e-mail: users-unsubscribe@pdfbox.apache.org
>>>>> For additional commands, e-mail: users-help@pdfbox.apache.org
>>>>
>>>> ---------------------------------------------------------------------
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>>>> For additional commands, e-mail: users-help@pdfbox.apache.org
>>>>
>>>
>>
>>
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