Apache Commons Latar: IllegalArgumentException con GetNexttarenttry
-
10-12-2019 - |
Domanda
Sto avendo un problema con il Compress Apache Library .Vorrei un archivio che contiene file binari.Ecco il codice:
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import org.apache.commons.compress.archivers.tar.TarArchiveEntry;
import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
public class ArchiveManager {
public static final int BUFFER_MAX = 2048;
public static void untar(String fileName, String targetPath) throws IOException {
File tarArchiveFile = new File(fileName);
BufferedOutputStream dest = null;
FileInputStream tarArchiveStream = new FileInputStream(tarArchiveFile);
TarArchiveInputStream tis = new TarArchiveInputStream(new BufferedInputStream(tarArchiveStream));
TarArchiveEntry entry = null;
try {
while ((entry = tis.getNextTarEntry()) != null) {
int count;
File outputFile = new File(targetPath, entry.getName());
if (entry.isDirectory()) { // entry is a directory
if (!outputFile.exists()) {
outputFile.mkdirs();
}
} else { // entry is a file
byte[] data = new byte[BUFFER_MAX];
FileOutputStream fos = new FileOutputStream(outputFile);
dest = new BufferedOutputStream(fos, BUFFER_MAX);
while ((count = tis.read(data, 0, BUFFER_MAX)) != -1) {
dest.write(data, 0, count);
}
dest.flush();
dest.close();
}
}
} catch(Exception e) {
e.printStackTrace();
} finally {
if (dest != null) {
dest.flush();
dest.close();
}
tis.close();
}
}
}
.
Quando si ingrandiscono file binari, getNextTarEntry()
genera un'eccezione:
java.lang.IllegalArgumentException: Invalid byte 111 at offset 0 in 'o.txt{NUL}{NUL}{NUL}' len=8
at org.apache.commons.compress.archivers.tar.TarUtils.parseOctal(TarUtils.java:99)
at org.apache.commons.compress.archivers.tar.TarArchiveEntry.parseTarHeader(TarArchiveEntry.java:786)
at org.apache.commons.compress.archivers.tar.TarArchiveEntry.<init>(TarArchiveEntry.java:308)
at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:198)
at com.airbus.pakito.download.ArchiveManager.untar(ArchiveManager.java:22)
.
Ho provato a sbiancare semplici file di testo.Dopo aver installato l'ultimo file, getNextTarEntry()
non restituisce null ma un oggetto con archivi vuoti.Quindi entry.getName()
è vuoto e ovviamente new FileOutputStream(outputFile)
non può creare un file.
java.io.FileNotFoundException: C:\Temp (Accès refusé)
at java.io.FileOutputStream.open(Native Method)
at java.io.FileOutputStream.<init>(Unknown Source)
at java.io.FileOutputStream.<init>(Unknown Source)
at com.airbus.pakito.util.Archive.untar(Archive.java:32)
.
Hai un'idea da dove viene il problema?
Grazie.
Soluzione
I finally found out where the problem comes from.
This is a known bug which is fixed in the 1.4 release of Apache compress. I hope this release will be available very soon.
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