Convert ZipOutputStream to ByteArrayInputStream

问题

I want to compress an InputStream using ZipOutputStream and then get the InputStream from compressed ZipOutputStream without saving file on disc. Is that possible?

回答1:

I figured it out:

public InputStream getCompressed( InputStream is )
    throws IOException
{
    byte data[] = new byte[2048];
    ByteArrayOutputStream bos = new ByteArrayOutputStream();
    ZipOutputStream zos = new ZipOutputStream( bos );
    BufferedInputStream entryStream = new BufferedInputStream( is, 2048);
    ZipEntry entry = new ZipEntry( "" );
    zos.putNextEntry( entry );
    int count;
    while ( ( count = entryStream.read( data, 0, 2048) ) != -1 )
    {
        zos.write( data, 0, count );
    }
    entryStream.close();
    zos.closeEntry();
    zos.close();

    return new ByteArrayInputStream( bos.toByteArray() );
}

来源：https://stackoverflow.com/questions/20221128/convert-zipoutputstream-to-bytearrayinputstream