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说起来我好像和小型机有仇，今天晚上更新程序死活也更新不上去，这个hpux11i真实麻烦。大多数ftp程序都不好用，后来只能用jar打包，打完后把程序放到hpux上用jar解压缩，见鬼，这都能出问题，结果报了一个异常。java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:298)，唉咋办，上网查了查，发现居然是sun的一个bug，而且六年都没有改了，TNND，sun你就不能勤快点啊。 没办法，只能试了试，结果发现只要在同一个平台就没有问题，后来估计是平台的encode的问题，不过没找到在什么地方设置。解决办法：在windows下用jar压缩一个jar文件，然后用windows的ftp工具把这个文件传到hpux上，然后再在windows下用telnet工具连接到hpux上，执行jar xvf就好用了。 最后再鄙视一下sun的懒惰!
Bug ID:4820807 |
|
| Votes | 9 |
| Synopsis | java.util.zip.ZipInputStream cannot extract files with Chinese chars in name |
| Category | java:classes_util_jarzip |
| Reported Against | 1.2.1 , 1.4.1 , tiger |
| Release Fixed | |
| State | In progress, request for enhancement |
| Related Bugs | 4885817 , 4244499 |
| Submit Date | 19-FEB-2003 |
| Description | FULL PRODUCT VERSION :
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)
FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]
Service Pack 3
A DESCRIPTION OF THE PROBLEM :
If ZipInputStream is used to read a zip file containing one
or more files with Chinese, Japanese or Korean names, the
getNextEntry method throws an IllegalArgumentException.
STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Create a zip file containing at least one file with a
Chinese, Japanese or Korean filename.
2. Try to read using a ZipInputStream.
EXPECTED VERSUS ACTUAL BEHAVIOR :
Should return a valid entry with the correct filename
instead of throwing an exception.
ERROR MESSAGES/STACK TRACES THAT OCCUR :
java.lang.IllegalArgumentException
at java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:291)
at java.util.zip.ZipInputStream.readLOC(ZipInputStream.java:230)
at java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:75)
REPRODUCIBILITY :
This bug can be reproduced always.
---------- BEGIN SOURCE ----------
import java.io.FileInputStream;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
public final class TestCase {
public static void main(String[] args) throws IOException {
ZipInputStream zis = new ZipInputStream(new FileInputStream
("myfile.zip"));
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null) {
System.out.println("found " + entry.getName());
}
}
}
---------- END SOURCE ----------
CUSTOMER WORKAROUND :
Do not use CJK filenames in zip files.
(Review ID: 181382)
======================================================================
xxxxx@xxxxx 2003-09-02
Same problem reported by a CAP member from Germany:
J2SE Version (please include all output from java -version flag):
java version "1.4.1"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1-b21)
Java HotSpot(TM) Client VM (build 1.4.1-b21, mixed mode)
and
java version "1.5.0-beta"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0-beta-b16)
Java HotSpot(TM) Client VM (build 1.5.0-beta-b16, mixed mode)
Does this problem occur on J2SE 1.3, 1.4 or 1.4.1? Yes / No (pick one)
Yes
Operating System Configuration Information (be specific):
English Linux and German Win2K
Bug Description:
A ZIP file with entries that contain german umlauts. When read
read these entries using ZipInputStream.getNextEntry() it throws an
IllegalArgumentException at:
Exception in thread "main" java.lang.IllegalArgumentException
at
java.util.zip.ZipInputStream.getUTF8String(ZipInputStream.java:298)
at java.util.zip.ZipInputStream.readLOC(ZipInputStream.java:237)
at
java.util.zip.ZipInputStream.getNextEntry(ZipInputStream.java:73)
at ZipUmlauts.main(ZipUmlauts.java:22)
It would be better, if the getUTF8String() method would just ignore
these "illegal" characters or add them "as-is".
Test Program: (ZipUmlauts.java umlauts.zip)
-------------
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
/*
* ZipUmlauts.java created on Sep 1, 2003 8:45:08 AM
*/
/**
* @version ${Id:}
* @author rs
* @since pirobase®CB 1.0
*/
public final class ZipUmlauts {
public static void main(String[] args) throws IOException {
FileInputStream fis=new FileInputStream("umlauts.zip");
ZipInputStream zis=new ZipInputStream(fis);
ZipEntry ze;
while ((ze=zis.getNextEntry())!=null) {
System.out.println(ze.getName());
}
}
} |
| Work Around | N/A |
| Evaluation | Unfortunately, fixing this in a backward-compatible way may be impossible. At least, for non-ASCII file names, Java should be able to create files on one system and extract them on a different system, even if the encodings are different. The suggestion of adding an encoding attribute is a good one. That should have been done when the decision to encode file names in UTF-8 was first made. xxxxx@xxxxx 2003-09-04 I have confirmed that, as long as one uses Sun's J2SE zip implementation consistently, in a environment where file.encoding supports the character set of interest, that one can create, list and extract jar/zip files containing non-ASCII characters (including Chinese characters) correctly. Other zip implementations also have character encoding interoperability problems, so J2SE's implementation is not alone. The suggestion of falling back to file.encoding is an appealing one, but it's quite dangerous to go down that route. Encoding "autodetection" is a good interactive feature for users, but it's not so good for file formats. To have a file be properly readable depending fairly randomly on the data bit patterns stored within it is a reliability disaster. It's much better to have consistent failure than intermittent "success". Re-architecting zip to record the encoding of the file names will hopefully get done for J2SE 1.6. xxxxx@xxxxx 2003-11-25 I believe this is a duplicate of 4244499. See the evaluation of that bug report for a relatively simple proposed solution. xxxxx@xxxxx 2005-1-29 00:28:38 GMT |