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Subject: RE: EAR (zip) files created using Ant
Date: Sun, 11 Apr 2004 21:43:46 -0700
Message-ID: <890650F148A56F43B91C43B3710922D2144134@cnfqe109.cnf.prod.cnf.com>
Thread-Topic: EAR (zip) files created using Ant
Thread-Index: AcQd8Vsl2w1nEoAAT96ZN1dOIsmElgAYiN1QAH0YS0U=
From: "Sullivan, Sean C - MWT" <Sullivan.Sean@menlolog.com>
To: "Sullivan, Sean C - MWT" <Sullivan.Sean@menlolog.com>,
	<user@ant.apache.org>

I figured out the root cause of the "java.util.zip.ZipException: invalid =
entry size".

There was a bug in the recursion logic in my program.=20

I was passing an incorrect InputStream instance to one of the methods in =
my application.=20

The bug was solely in my code.=20

-Sean

p.s. - I found 3 Java implementations of ZipOutputStream

1) java.util.zip.ZipOutputStream
2) org.apache.tools.zip.ZipOutputStream (used by Ant)
3) org.apache.commons.compress.zip.ZipOutputStream =20
   (Jakarta Commons Compress project)


-----Original Message-----
From: Sullivan, Sean C - MWT
To: user@ant.apache.org
Sent: 4/9/2004 9:58 AM
Subject: EAR (zip) files created using Ant


I am using Ant's <ear> task to create an EAR file.

The EAR file contains a single WAR:  foo.war

foo.war contains a JAR file:   WEB-INF/lib/wsdl4j.jar


I wrote a Java program that will read the contents of the EAR file.
The program recursively scans the contents of all nested=20
WAR files, ZIP files, and JAR files.

The program uses java.util.zip.ZipInputStream and java.util.zip.ZipEntry

While reading from the ZipInputStream, the program throws=20
a ZipException:


Exception in thread "main" java.util.zip.ZipException: invalid entry
size (expected 736810 but got 736719 bytes)
at java.util.zip.ZipInputStream.readEnd(ZipInputStream.java:362)
at java.util.zip.ZipInputStream.read(ZipInputStream.java:141)
at java.util.zip.ZipInputStream.closeEntry(ZipInputStream.java:91)
at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:69)
at
zipdiff.DifferenceCalculator.processEmbeddedZipFile(DifferenceCalculator
.java:182)
at
zipdiff.DifferenceCalculator.processZipEntry(DifferenceCalculator.java:1
59)
at
zipdiff.DifferenceCalculator.buildZipEntryMap(DifferenceCalculator.java:
125)
at
zipdiff.DifferenceCalculator.calculateDifferences(DifferenceCalculator.j
ava:230)
at
zipdiff.DifferenceCalculator.getDifferences(DifferenceCalculator.java:30
9)
at zipdiff.DifferenceCalculator.main(DifferenceCalculator.java:332)


This is my question:  When Ant creates an EAR file, does it use
java.util.zip.ZipOutputStream or does it use=20
org.apache.tools.zip.ZipOutputStream?

If the EAR (zip) file is created with
org.apache.tools.zip.ZipOutputStream, will I be able to read the file
using java.util.zip.ZipInputStream?

What is causing the "invalid entry size" error message?


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