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| Reading from an InputStream |
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| kuriannvv |
 Posted: Mon Sep 26, 2011 1:34 am Post subject: Reading from an InputStream |
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Newbie
Joined: 26 Sep 2011
Posts: 3
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| Need help with reading the data from the message. The application that drops the message onto the queue does so as a JMS Message, therefore there are JMS properties that are read out as RFH Headers. I need to get the payload from this message, that is, just the file that is dropped onto the queue. The problem is that the file that is dropped to the queue is a compressed file (gzip). If it is a plain file (not compressed) I am able to read it out without any issues. Please could someone help with reading the compressed file from the message. Thank you. |
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| bruce2359 |
| Posted: Mon Sep 26, 2011 5:21 am Post subject: Re: Reading from an InputStream |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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| kuriannvv wrote: |
| The problem is that the file that is dropped to the queue is a compressed file (gzip). |
Please be precise. Why is this a problem for you? Are you receiving errors from some application because about the gzip file?
Are the sending and receiving platforms different (different o/s, Intel vs. non-Intel)?
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| kuriannvv |
| Posted: Mon Sep 26, 2011 5:57 am Post subject: |
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Newbie
Joined: 26 Sep 2011
Posts: 3
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If the file is not compressed and I read it out of the queue, I am able to get the data out of the file. If it is a compressed file, I need to de-compress it and get the content out of this. When I read a compressed file out as a stream, the data gets corrupted.
When I read the content (data that is not compressed) out as a stream, the file content is the same as what was dumped onto the queue.
What I want to know is, is there any way to read the compressed file out of the MQ message without corrupting it. |
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| fjb_saper |
| Posted: Mon Sep 26, 2011 6:31 am Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| kuriannvv wrote: |
If the file is not compressed and I read it out of the queue, I am able to get the data out of the file. If it is a compressed file, I need to de-compress it and get the content out of this. When I read a compressed file out as a stream, the data gets corrupted.
When I read the content (data that is not compressed) out as a stream, the file content is the same as what was dumped onto the queue.
What I want to know is, is there any way to read the compressed file out of the MQ message without corrupting it. |
If your message is compressed (gzip) you need to make sure (from the sending side) that what you have is BytesMessage and not a TextMessage.
Have fun 
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| kuriannvv |
| Posted: Mon Sep 26, 2011 7:04 am Post subject: |
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Newbie
Joined: 26 Sep 2011
Posts: 3
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| The sending system does send in a BytesMessage. The data that I read out is a Byte Message. But I seem to loose the file while I parse it for the payload. |
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| mqjeff |
| Posted: Mon Sep 26, 2011 7:28 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| kuriannvv wrote: |
| But I seem to loose the file while I parse it for the payload. |
Be precise.
What does it mean to parse the payload?
What does it mean to lose the file?
What is the code you have written? use [ c o d e ] tags to mark it if you decide to post it, so it is readable. |
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