ZipInputStream / ZipOutputStream

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Auteur	Sujet : ZipInputStream / ZipOutputStream

Rafax

Hi everybody,

I have to store some zipped data in a database and get them.
In entry, I have a byte array (byte[]).
I can zip my data, but not unzip it.

What I do :

To zip :

Code :

byte[] ba = GetmyByteArray();
/* => ba.length=182029 */
ByteArrayOutputStream baos = new ByteArrayOutputStream();
ZipOutputStream zos =new ZipOutputStream(baos);
zos.setLevel(9);
zos.setMethod(ZipOutputStream.DEFLATED);
ZipEntry ze = new ZipEntry("toto" );
ze.setSize(ba.length);
zos.putNextEntry(ze);
zos.write(ba);
zos.closeEntry();
zos.close();
byte[] baZipped = baos.toByteArray();
pstSTATEMENT.setBytes(i+1, baZipped);
/* => baZipped.length = 179253 */

To UNZIP :

Code :

Blob bResult = myResultSet.getBlob(iCOL);
/* => The Blob has the good size (same as baZipped.length) */
InputStream bais = bResult.getBinaryStream();
ZipInputStream zipReader = new ZipInputStream(bais);
ZipEntry ze = zipReader.getNextEntry();
/* => ZipEntry has "toto" as name => OK */
/* => ZipEntry has -1 as size and as compressedSize => beuh */
int i = zipReader.read(buf) ;
int i = zipReader.read(buf, 0, 182029);
/* => both return 858 instead of 182029 */

I never get an uncompressed byte[] !!!

Please help !
Raphael.

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FORUM HardWare.fr

Programmation

Java

ZipInputStream / ZipOutputStream

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