java.util.zip.ZipException: too many entries in ZIP file

Question

I am trying to write a Java class to extract a large zip file containing ~74000 XML files. I get the following exception when attempting to unzip it utilizing the java zip library:

java.util.zip.ZipException: too many entries in ZIP file

Unfortunately due to requirements of the project I can not get the zip broken down before it gets to me, and the unzipping process has to be automated (no manual steps). Is there any way to get around this limitation utilizing java.util.zip or with some 3rd party Java zip library?

Thanks.

Answer 1

Using ZipInputStream instead of ZipFile should probably do it.

Answer 2

Using apache IOUtils:

FileInputStream fin = new FileInputStream(zip);
ZipInputStream zin = new ZipInputStream(fin);
ZipEntry ze = null;

while ((ze = zin.getNextEntry()) != null) {
    FileOutputStream fout = new FileOutputStream(new File(
                    outputDirectory, ze.getName()));

    IOUtils.copy(zin, fout);

    IOUtils.closeQuietly(fout);
    zin.closeEntry();
}

IOUtils.closeQuietly(zin);