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From Martin Gainty <>
Subject RE: file download problem in application server
Date Thu, 26 Mar 2009 14:37:48 GMT

I assume your blob Class is Serializable?
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> Subject: RE: file download problem in application server
> Date: Thu, 26 Mar 2009 08:20:19 -0400
> From:
> To:
> I was half wrong.  It was a quirk for runnnig in OC4J but the Blob was
> being mangled coming out of the data base (which I had previously ruled
> out, doh).
> Adding a property to the file for:
> hibernate.jdbc.use_streams_for_binary=true
> fixed my problem.  Otherwise file handling in struts 2 is a snap.  So
> thanks for that.
> -----Original Message----- 
> Sent: Wednesday, March 25, 2009 9:26 AM
> To:
> Subject: file download problem in application server
> I posted this question on the OTN - OC4J list a second ago, but am
> hoping someone here might have some insight.
> "I have a web app running in an OC4J stand alone and am having
> a problem with downloading files over http. Its a struts2 app whose file
> downloading impl is easy to use and standard code for writing to an http
> servlet response output stream.
> Using the firefox plugin for Live Headers I can see that the headers are
> correctly added to the servlet response and I do get the file I want.
> However the file has been mangled with binary output around the text.
> This is the case for txt, word, or any other file.
> This problem does not occur in Jetty or Tomcat. I've also ruled out file
> corruption while going in/out of the database since I can upload a file
> when running oc4j, turn off oc4j, start up my app in Jetty and retrieve
> the same file just fine.
> The mime types are all accounted for and the problem exists regardless
> if I use a specific content type or just application/download. My
> browsers (firefox and ie) also recognize all files from the content
> disposition value "attachment; filename=myfilename.ext". Its just the
> file content that some how has been wrecked on the way out of the
> container.
> Has anyone experienced this? I only found one or two unanswered posts
> elsewhere.
> How can this be mitigated?"
> What I didn't include in the above post is that we're on s2 2.0.14, also
> that I put on my pirate hat and created a custom result type based on
> the StreamResult so that I could specifically set some additional
> response headers.  It all works great in a servlet container, but I'd
> like to know if you all have seen this problem in application servers
> like oc4j or jboss and if so what did you do to fix it?  I'm open to any
> suggestions.
> Thanks a bunch,
> Andrew
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