Create a Zip File in Memory

Question

I\'m trying to zip a file (for example foo.csv) and upload it to a server. I have a working version which creates a local copy and then deletes the local copy. How would I

Answer 1

nifi MergeContent contain compressZip code

commons-io

public byte[] compressZip(ByteArrayOutputStream baos,String entryName) throws IOException {
    try (final ByteArrayOutputStream zipBaos = new ByteArrayOutputStream();
         final java.util.zip.ZipOutputStream out = new ZipOutputStream(zipBaos)) {
        final ZipEntry zipEntry = new ZipEntry(entryName);
        zipEntry.setSize(baos.size());
        out.putNextEntry(zipEntry);
        IOUtils.copy(new ByteArrayInputStream(baos.toByteArray()), out);
        out.closeEntry();
        out.finish();
        out.flush();
        return zipBaos.toByteArray();
    }
}