ZipOutputStream creates invalid zip

I am using ZipOutputStream, and it is creating invalid zip files. The problem is, it is inserting extra bytes into the data, always between the LOC entry and the data for the file. The extra bytes cause the affected file to be unrecoverable.
These extra bytes are also not accounted for in the 'written' count, so the end-of-archive directory has offsets that don't point at valid LOC entries. Sometimes unzip can recover from this, and sometimes not. The result is, only a subset of files in the zip can be unzipped.
I am able to remove the extra bytes using 'dd', and then the file unzips correctly.
I've stepped through the code in the debugger, and can't find any reason why they should be present. I suspect the Deflater's JNI native code. (It occurs in deflated files, I am not using 'store'.) It occurs regardless of compression level.
This may or may not be relevant, but the bytes always seem to be a repeating pattern of 0x0a090909.
This problem occurs in Java 1.5.0_07, 1.5.0_14, and 1.6.0_03.

Here is an example error message coming from 'unzip' for one of these files:
Archive: export.zip
warning [export.zip]: 2 extra bytes at beginning or within zipfile
(attempting to process anyway)
file #1: bad zipfile offset (local header sig): 2
(attempting to re-compensate)...
inflating: Test Results for test4/4._Test_Results_for_00Kris/4.3._Test_Results_for_Routing_Robot_1237/4.3.1._Component_Description/contents.txt
error: invalid compressed data to inflate
file #20: bad zipfile offset (local header sig): 4633
(attempting to re-compensate)And, here is a hexdump of an affected part of the file. The extra bytes follow "contents.txt". This trashes the file data, and pushes the LOC for the next file 4 bytes later than the directory thinks it should be.
And, incidentally, this occurs consistently for the same files every time.
000010f0 59 b3 4f 7d 00 00 00 ec 00 00 00 50 4b 03 04 14 |Y�O}...�...PK...|
00001100 00 08 00 08 00 da 2e 8b 37 00 00 00 00 00 00 00 |.....�..7.......|
00001110 00 00 00 00 00 86 00 02 00 2e 2f 54 65 73 74 20 |........../Test |
00001120 52 65 73 75 6c 74 73 20 66 6f 72 20 74 65 73 74 |Results for test|
00001130 34 2f 34 2e 5f 54 65 73 74 5f 52 65 73 75 6c 74 |4/4._Test_Result|
00001140 73 5f 66 6f 72 5f 30 30 4b 72 69 73 2f 34 2e 33 |s_for_00Kris/4.3|
00001150 2e 5f 54 65 73 74 5f 52 65 73 75 6c 74 73 5f 66 |._Test_Results_f|
00001160 6f 72 5f 52 6f 75 74 69 6e 67 5f 52 6f 62 6f 74 |or_Routing_Robot|
00001170 5f 31 32 33 37 2f 34 2e 33 2e 31 2e 5f 43 6f 6d |_1237/4.3.1._Com|
00001180 70 6f 6e 65 6e 74 5f 44 65 73 63 72 69 70 74 69 |ponent_Descripti|
00001190 6f 6e 2f 63 6f 6e 74 65 6e 74 73 2e 74 78 74 00 |on/contents.txt.|
000011a0 00 0a 0a 3d cb 31 0e c2 30 0c 46 e1 dd a7 f8 25 |...=�1.�0.F����%|
000011b0 16 3a 24 12 90 0b 54 b0 b0 f5 0a 51 62 a8 d5 e2 |.:$...T���.Qb���|
000011c0 44 89 55 ae 4f 61 60 7b c3 f7 82 bf f8 93 c7 b5 |D.U�Oa`{��.��.��|
000011d0 bc 6a 51 56 c3 8d 7b 6a 52 4d 8a e2 78 a8 6b 54 |�jQV�.{jRM.�x�kT|
000011e0 67 dc 2d b8 b3 0b 5f 3b 10 8d 48 7f fe 28 0d 9d |g�-��._;..H.�(..|
000011f0 35 8b 3e b1 c5 55 32 ee 13 6a 4c 0b 5b c7 5b 6c |5.>��U2�.jL.[�[l|
00001200 de ad 5a 93 8d f3 af f6 87 88 3e 50 4b 07 08 7f |��Z..���..>PK...|
00001210 b1 bc fc 68 00 00 00 76 00 00 00 50 4b 03 04 14 |���h...v...PK...|

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Dear all,
Following my yesterday's posting, I would clarify my questions:
I successfully created a zip file which contains a folder structure and two files from strings. See attached codes.
However, I don't like the way that I physically created subfolder and files before add them to the zip file.
Is there any possibility to avoid that part of creating multiple folders?
Regards.
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package com.zip.test;
import java.io.BufferedInputStream;
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import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
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import java.util.zip.ZipOutputStream;
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pengyou wrote:
But I did not understand how to convert a String to ZipOutputStream with a user choosen file name and a user choosen folder structure.
I am blocked at that point. Sorry for repeating the same question.
That doesn't make sense to me. Even more so as your sample code suggests that you are familiar with Writer and ZipEntry concepts. Can you explain in detail where you are stuck or what part of my previous suggestion was unclear to you?
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import java.util.zip.ZipEntry;
import java.io.FileOutputStream;
import java.io.BufferedWriter;
import java.io.OutputStreamWriter;
public class ZipTest {
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        ZipOutputStream zos = new ZipOutputStream(new FileOutputStream(path));
        BufferedWriter bw = new BufferedWriter(new OutputStreamWriter(zos, "UTF-8"));
        for (int i = 0; i < content.length; ++i) {
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zos.putNextEntry(entry);
bw.write(content[i]);
bw.flush();
zos.closeEntry();
// this will close zos, too
bw.close();
Edited by: thomas.behr on Apr 22, 2009 4:10 PM

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p_branch_sequence=> 10,
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p_flow_step_id=> 4,
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Best Regards,
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Iam totally new to Dreamweaver and the extensions. So please
help me with this.
Assuming i have a .zip file and it contains some html pages
along with css and gifs.
The req is to have an Import option, which given this zip
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Thanks in advance,
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There used to be one .. I'm not sure if that was in DMX time
or DMX 2004
time .. that, when installed, allowed you to select files
from the site
folder or the whole thing and create a zip from them. I don't
remember what
it was called or who created it .. but it might be on one of
my archived
disks or zips .. I'll try to check it out later today.
Nancy Gill
Adobe Community Expert
Author: Dreamweaver 8 e-book for the DMX Zone
Co-Author: Dreamweaver MX: Instant Troubleshooter (August,
2003)
Technical Editor: DMX 2004: The Complete Reference, DMX 2004:
A Beginner''s
Guide, Mastering Macromedia Contribute
Technical Reviewer: Dynamic Dreamweaver MX/DMX: Advanced PHP
Web Development
"Ganesh Ram" <[email protected]> wrote in
message
news:engarc$d62$[email protected]..
> Iam totally new to Dreamweaver and the extensions. So
please help me with
> this.
>
> Assuming i have a .zip file and it contains some html
pages along with css
> and
> gifs.
> The req is to have an Import option, which given this
zip file, can unzip
> its
> contents. The user can work on these html pages. When
the user finishes
> working on them, I need an export button so that we can
package the entire
> stuff back into a zip file.
>
> How can i implement this ?
> Is there any extension that is available for this ?
>
> Eagerly looking forward to some useful answers...
>
> Thanks in advance,
> Ganesh
>
>

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Use an outer join on the two tables so that results are returned for all feedback rows, instead of just matching rows. The column zipcodes.citystate will be NULL. In your recordset output, you can test for null in the column and populate it with "Invalid Zipcode" if you want.
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Problems creating/extracting ZIP files, anyone?

Greetings,
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ZipOutputStream creates invalid zip

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