Your PDF may not be content encrypted but it may have a permissions password attached to it. The permissions security scheme determines whether it can be copied or printed etc. You should put your PDFs through the actual adobe reader and look at preferences to see if there are some permissions restrictions. These will have to be lifted if you are to merge. Often there will be permissions restrictions with a permissions password of ""
-----Original Message----- From: Tilman Hausherr [mailto:[email protected]] Sent: Wednesday, 17 December 2014 8:54 AM To: [email protected] Subject: Re: PDFMerge Exception [SEC=UNOFFICIAL] The file is not encrypted. Tilman Am 16.12.2014 um 22:48 schrieb Cheffers, Paul: > You have to make sure the PDF is not encrypted in order to merge. If > it is encrypted you Need to decrypt it using PDFBOX calls (and for this you > need the bouncycastle jar file as well as PDFBOX). > > Paul > > -----Original Message----- > From: Tilman Hausherr [mailto:[email protected]] > Sent: Wednesday, 17 December 2014 8:47 AM > To: [email protected] > Subject: Re: PDFMerge Exception > > I tested with 2.0 :-( > > Tilman > > Am 16.12.2014 um 22:39 schrieb John Hewson: >> Try using the latest 2.0 snapshot, recursive resources are handled >> differently in 2.0, so the problem may not exist there. >> >> -- John >> >>> On 16 Dec 2014, at 12:03, Tilman Hausherr <[email protected]> wrote: >>> >>> Hi, >>> >>> Yes, you can file a bug in JIRA, but if there's really this resource >>> recursion, the best that can be done is that have PDFMerger output an error. >>> >>> You mentioned that you thought that the file might be problematic. Did you >>> have other trouble already? >>> >>> Tilman >>> >>> Am 16.12.2014 um 20:55 schrieb Marc Davis: >>>> Yes, of course, I meant the first file. I should have labelled it file1, >>>> file2. Next steps?? File a bug? >>>> >>>> Thanks, >>>> Marc >>>> >>>> >>>> >>>>> On Dec 16, 2014, at 2:54 PM, Tilman Hausherr <[email protected]> >>>>> wrote: >>>>> >>>>> It is the first file that makes the trouble, when trying to merge it with >>>>> itself. This doesn't happen with the second one. >>>>> >>>>> According to PDFDebugger, there is a resource recursion. Either that or a >>>>> PDFBox bug. >>>>> >>>>> Tilman >>>>> >>>>> Am 16.12.2014 um 20:26 schrieb Marc Davis: >>>>>> Hello, >>>>>> >>>>>> I am using pdfbox-app-1.8.8.jar to merge this file >>>>>> <https://www.dropbox.com/s/tfhpiac1n7evkf1/mark%20dinges.pdf?dl=0> with >>>>>> this file <https://www.dropbox.com/s/08xappgyx391q4u/diels%202.pdf?dl=0>. >>>>>> >>>>>> I am getting the following result: >>>>>> >>>>>> Exception in thread "main" java.lang.StackOverflowError >>>>>> at >>>>>> java.util.LinkedHashMap$LinkedHashIterator.<init>(LinkedHashMap.java:366) >>>>>> at >>>>>> java.util.LinkedHashMap$LinkedHashIterator.<init>(LinkedHashMap.java:366) >>>>>> at java.util.LinkedHashMap$EntryIterator.<init>(LinkedHashMap.java:412) >>>>>> at java.util.LinkedHashMap$EntryIterator.<init>(LinkedHashMap.java:412) >>>>>> at java.util.LinkedHashMap.newEntryIterator(LinkedHashMap.java:419) >>>>>> at java.util.HashMap$EntrySet.iterator(HashMap.java:1082) >>>>>> at >>>>>> org.apache.pdfbox.pdfwriter.COSWriter.visitFromDictionary(COSWriter.java:1016) >>>>>> at >>>>>> org.apache.pdfbox.pdfwriter.COSWriter.visitFromDictionary(COSWrit >>>>>> er.java:1043) >>>>>> >>>>>> and whole series of the last line. Any suggestions? I think the last >>>>>> file may be problematic. >>>>>> >>>>>> Thanks, >>>>>> Marc >>>>>> >>>>>> >>>>>> >>>>>> > > ********************************************************************** > IMPORTANT: This e-mail is for the use of the intended recipient only > and may contain information that is confidential, commercially > valuable and/or subject to legal or parliamentary privilege. If you > are not the intended recipient you are notified that any review, > re-transmission, disclosure, dissemination or other use of, or taking > of any action in reliance upon, this information is prohibited and may > result in severe penalties. If you have received this e-mail in error > please notify the sender immediately and delete all electronic and > hard copies of this transmission together with any attachments. Please > consider the environment before printing this e-mail > ********************************************************************** ********************************************************************** IMPORTANT: This e-mail is for the use of the intended recipient only and may contain information that is confidential, commercially valuable and/or subject to legal or parliamentary privilege. If you are not the intended recipient you are notified that any review, re-transmission, disclosure, dissemination or other use of, or taking of any action in reliance upon, this information is prohibited and may result in severe penalties. If you have received this e-mail in error please notify the sender immediately and delete all electronic and hard copies of this transmission together with any attachments. Please consider the environment before printing this e-mail **********************************************************************

