topic Re: Document preview in Alfresco Archive

Document preview

ivan — Mon, 06 Jul 2009 09:55:13 GMT

Hello,i installed latest versions of ImageMagick/swf2pdf and openoffice but inside document library i cannot see document thumbnails or preview of microsoft word documents (and i need this more than thumbnails). also i can't see pdf documents which are generated from microsoft office (get message th

Re: Document preview

zaizi — Mon, 06 Jul 2009 10:18:05 GMT

Go to document preview page. View the page source (or use firebug) to find the flash component in the page that does the image preview. It is passed a URL for the flash document to load. Copy and paste this URL directly in your browser. It should display the preview document if working correctly or display a stack trace with the exact reason why it it isn't.

Re: Document preview

ivan — Mon, 06 Jul 2009 10:59:22 GMT

hi, zaizi thanx for yout help…well, i did search through firebug and find

http://myipaddress:8080/share/proxy/alfresco/api/node/workspace/SpacesStore/c548889e-0da0-4333-897d-db205cf09f7c/content/thumbnails/webpreview?c=force&noCacheToken=1246877571943&jsCallback=Alfresco.util.ComponentManager.find({id:'template_x002e_web-preview_x002e_document-details'})[0].onWebPreviewerEvent

not sure is that thing i should look for :s , but if i load pervious link i get

exception

org.alfresco.error.AlfrescoRuntimeException: Error during endpoint proxy processing: Invalid uri 'http://localhost:8080/alfresco/s/api/node/workspace/SpacesStore/c548889e-0da0-4333-897d-db205cf09f7c/content/thumbnails/webpreview?c=force&noCacheToken=1246877571943&jsCallback=Alfresco.util.ComponentManager.find({id:%27template_x002e_web-preview_x002e_document-details%27})[0].onWebPreviewerEvent&alf_ticket=TICKET_c5341a2c28096e945994121468f2a41c1829fe9a': Invalid query
org.alfresco.web.scripts.servlet.EndPointProxyServlet.service(EndPointProxyServlet.java:265)
javax.servlet.http.HttpServlet.service(HttpServlet.java:717)

Re: Document preview

zaizi — Mon, 06 Jul 2009 11:06:37 GMT

Sorry, forgot to mention to remove the javascript call back function. So the URL is: http://localhost:8080/alfresco/s/api/node/workspace/SpacesStore/c548889e-0da0-4333-897d-db205cf09f7c/content/thumbnails/webpreview?c=force

Re: Document preview

ivan — Mon, 06 Jul 2009 11:35:16 GMT

well if i enter

http://myipaddress:8080/alfresco/s/api/node/workspace/SpacesStore/c548889e-0da0-4333-897d-db205cf09f7c/content/thumbnails/webpreview?c=force

i get following message

Message:   Wrapped Exception (with status template): Failed to execute script '/org/alfresco/repository/thumbnail/thumbnail.get.js (in classpath store file:/opt/Alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/templates/webscripts)': Thumbnail could not be created because of a duplicate name
    
Exception:   org.alfresco.service.cmr.thumbnail.ThumbnailException - Thumbnail could not be created because of a duplicate name‍‍‍

and if i enter link below i can see pdf document (but still not inside document library)
http://myipaddress:8080/alfresco/s/api/node/workspace/SpacesStore/c548889e-0da0-4333-897d-db205cf09f7c/content/

Re: Document preview

ivan — Mon, 06 Jul 2009 11:51:19 GMT

and if i, like in pervious examples, point browser on word document i get download option (not preview)

or with

http://myipaddress:8080/alfresco/s/api/node/workspace/SpacesStore/aae9b8e9-f650-458d-943a-42ec875fcb2c/content/thumbnails/webpreview?c=force

Message:   Wrapped Exception (with status template): Failed to execute script '/org/alfresco/repository/thumbnail/thumbnail.get.js (in classpath store file:/opt/Alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/templates/webscripts)': Content conversion failed: reader: ContentAccessor[ contentUrl=store://2009/6/23/23/3/92c74ad2-f612-4c20-bda4-510061985bc5.bin, mimetype=application/msword, size=19968, encoding=UTF-8, locale=en_US] writer: ContentAccessor[ contentUrl=store://2009/7/6/21/55/ba8c192c-2f96-43f2-96dd-50b80bf64c99.bin, mimetype=application/x-shockwave-flash, size=0, encoding=UTF-8, locale=en_US] options: org.alfresco.repo.content.transform.swf.SWFTransformationOptions@b46b06
    
Exception:   net.sf.jooreports.openoffice.connection.OpenOfficeException - conversion failed; com.sun.star.lang.IllegalArgumentException: URL seems to be an unsupported one.‍‍‍

Re: Document preview

zaizi — Tue, 07 Jul 2009 16:14:40 GMT

The first issue with thumbnail is interesting. It is failing because a file with the same name exists. You can try deleting the document and uploading again. Alternatively you can always browse through the Nodebrowser to see if the thumbnail association exists. If you search for "doclib.png" in Alfresco explorer within the space of the document it should show you all the thumbnail images.

The second issue is odd. It should be converting from MS Word to PDF and then to Flash. Can you check your start up logs to ensure all services are starting up ok. E.g. Open Office, Pdf2Swf.

Re: Document preview

ivan — Wed, 08 Jul 2009 08:19:13 GMT

hello zaizi,
i upgraded to 3.2 version, and updated ImageMagick and swftools. as i can see from console ImageMagick, swf tools and openoffice are working ok. i still manage to see some of pdf files, and paths to img.exe and swf. in alfresco-global.properties are correct

if i point directly to thumbnail preview i get

500 Description:    An error inside the HTTP server which prevented it from fulfilling the request.
 
Message:   06080023 Wrapped Exception (with status template): 06080022 Failed to execute script '/org/alfresco/repository/thumbnail/thumbnail.get.js (in classpath store file:/opt/alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/templates/webscripts)': 06080021 Thumbnail could not be created as required transformation is not supported from application/pdf to application/x-shockwave-flash
    
Exception:   org.alfresco.service.cmr.thumbnail.ThumbnailException - 06080021 Thumbnail could not be created as required transformation is not supported from application/pdf to application/x-shockwave-flash
‍‍‍‍‍‍

and in alfresco.log i found

Caused by: com.sun.pdfview.PDFParseException: Expected 'xref' at start of table
        at com.sun.pdfview.PDFFile.readTrailer(PDFFile.java:974)
        at com.sun.pdfview.PDFFile.parseFile(PDFFile.java:1175)
        at com.sun.pdfview.PDFFile.<init>(PDFFile.java:126)
        at com.sun.pdfview.PDFFile.<init>(PDFFile.java:102)‍‍‍‍‍

Caused by: org.alfresco.error.AlfrescoRuntimeException: 06080030 Unable to create image from pdf file.‍

Caused by: org.alfresco.service.cmr.repository.ContentIOException: 06080202 Content conversion failed:
   reader: ContentAccessor[ contentUrl=store://2009/6/23/23/3/92c74ad2-f612-4c20-bda4-510061985bc5.bin, mimetype=application/
msword, size=19968, encoding=UTF-8, locale=en_US]
   writer: ContentAccessor[ contentUrl=store:///opt/alfresco/tomcat/temp/Alfresco/ComplextTransformer_intermediate_doc_50614.
pdf, mimetype=application/pdf, size=0, encoding=UTF-8, locale=en_GB]
‍‍‍‍‍‍

Caused by: org.alfresco.service.cmr.repository.ContentIOException: 06080118 OpenOffice server conversion failed:
   reader: ContentAccessor[ contentUrl=store://2009/6/23/23/3/92c74ad2-f612-4c20-bda4-510061985bc5.bin, mimetype=application/
msword, size=19968, encoding=UTF-8, locale=en_US]
   writer: ContentAccessor[ contentUrl=store:///opt/alfresco/tomcat/temp/Alfresco/ComplextTransformer_intermediate_doc_50537.
pdf, mimetype=application/pdf, size=0, encoding=UTF-8, locale=en_GB]
   from file: /opt/alfresco/tomcat/temp/Alfresco/OpenOfficeContentTransformer-source-50538.doc
   to file: /opt/alfresco/tomcat/temp/Alfresco/OpenOfficeContentTransformer-target-50539.pdf
‍‍‍‍‍‍‍‍

Caused by: org.alfresco.scripts.ScriptException: 06080121 Failed to execute script '/org/alfresco/repository/thumbnail/thumbn
ail.get.js (in classpath store file:/opt/alfresco/tomcat/webapps/alfresco/WEB-INF/classes/alfresco/templates/webscripts)': 06
080120 Content conversion failed:
   reader: ContentAccessor[ contentUrl=store://2009/6/23/23/3/92c74ad2-f612-4c20-bda4-510061985bc5.bin, mimetype=application/
msword, size=19968, encoding=UTF-8, locale=en_US]
   writer: ContentAccessor[ contentUrl=store://2009/7/8/2/34/3addb28b-85a7-4f51-a950-2dd1ccf76d0d.bin, mimetype=application/x
-shockwave-flash, size=0, encoding=UTF-8, locale=en_GB]
   options: org.alfresco.repo.content.transform.swf.SWFTransformationOptions@17297df

++++
Caused by: org.alfresco.service.cmr.repository.ContentIOException: 06080031 Content conversion failed:
   reader: ContentAccessor[ contentUrl=store://2009/7/1/22/39/2fbdd724-56e3-408f-b2b4-10f4067acc33.bin, mimetype=application/
pdf, size=7075579, encoding=utf-8, locale=en_US]
   writer: ContentAccessor[ contentUrl=store://2009/7/8/5/1/a9c003fd-a213-4cf2-9560-5e17c0d1e5b6.bin, mimetype=image/png, siz
e=0, encoding=utf-8, locale=en_GB]
   options: org.alfresco.repo.content.transform.magick.ImageTransformationOptions@ce9af7
‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍‍

Re: Document preview

jayjayecl — Wed, 08 Jul 2009 09:08:30 GMT

Do you run on an UNIX server ?
Can you check that OpenOffice user has sufficient priviledges on the following folder : tomcat/temp (and recursively on its children) ?

Re: Document preview

ivan — Wed, 08 Jul 2009 13:50:18 GMT

Do you run on an UNIX server ?
Can you check that OpenOffice user has sufficient priviledges on the following folder : tomcat/temp (and recursively on its children) ?

yes it's on linux…all directories under tomcat are owned by alfresco. well, i just upgraded office to 3.1.0 and now i get preview of doc files, but still got problems with thumbnails and preview of some pdf files.

Re: Document preview

jayjayecl — Wed, 08 Jul 2009 13:52:18 GMT

check whether you have SWF or PDF files of 0ko in temp folder

Re: Document preview

ivan — Thu, 16 Jul 2009 07:36:02 GMT

well, problem with pdf files is solved - it seems that users uploaded pdf files which had some protection…not sure what type, but in title bar of documents along with document name there was secured ops:

Re: Document preview

jayjayecl — Thu, 16 Jul 2009 07:38:44 GMT

Don't be sorry !
Still good news to hear that you went through it… and you taught me that SWF conversion won't be possible for encrypted PDF files, good to know !
I know they would be prevented from being indexed by Lucene (PDF content being unreadable), but I did not know for the conversion.

Thanks

Re: Document preview

ivan — Thu, 16 Jul 2009 07:42:18 GMT

but still can't manage to show thumbnails…and swftools are updated, logs are ok.

Re: Document preview

juilee — Wed, 27 Aug 2014 14:33:00 GMT

Hi Zaizi,

I have a problem with Office documents preview. The preview of document A wrongly shows up document B. I did what you suggested, copy pasted the url in my browser. It shows the wrong document.
Is it some caching issue? Is somehow the wrong cached image getting attached.
How can i turn off caching or resolve this issue?

Thanks,
Juilee