我想在Java中使用Gzip压缩来压缩输入流。
假设我们有一个未经压缩的输入流（1GB的数据...）。 我想从源获取一个压缩的输入流作为结果：
public InputStream getCompressedStream(InputStream unCompressedStream) {
// Not working because it's uncompressing the stream, I want the opposite.
return new GZIPInputStream(unCompressedStream);
}
public InputStream getCompressed( InputStream is ) throws IOException
{
byte data[] = new byte[2048];
ByteArrayOutputStream bos = new ByteArrayOutputStream();
GzipOutputStream zos = new GzipOutputStream( bos );
BufferedInputStream entryStream = new BufferedInputStream( is, 2048);
int count;
while ( ( count = entryStream.read( data, 0, 2048) ) != -1 )
{
zos.write( data, 0, count );
}
entryStream.close();
zos.close();
return new ByteArrayInputStream( bos.toByteArray() );
}
参考资料：压缩文件