压缩字节流种

压缩字节流类

import java.io.ByteArrayInputStream;import java.io.ByteArrayOutputStream;import java.io.IOException;import java.io.InputStream;import java.util.zip.GZIPInputStream;import java.util.zip.GZIPOutputStream;public class ZipUtils{    /**     * Compresses the input byte array using GZIP.     *     * @param binaryInput Array of bytes that should be compressed.     * @return Compressed bytes     * @throws IOException     */    public static byte[] gzip(byte[] binaryInput) throws IOException {        ByteArrayOutputStream baos    = new ByteArrayOutputStream();        GZIPOutputStream      gzipOut = new GZIPOutputStream(baos);        gzipOut.write(binaryInput);        gzipOut.finish();        gzipOut.close();        return baos.toByteArray();    }        /**     * Decompresses the input stream using GZIP.     *     * @param inputStream Stream those content should be decompressed.     * @return Decompressed bytes     * @throws IOException     */    public static byte[] gunzip(InputStream inputStream) throws IOException {        byte[]                buffer = new byte[1024];        int                   count;        ByteArrayOutputStream baos   = new ByteArrayOutputStream();        GZIPInputStream       gzipIn = new GZIPInputStream(inputStream);        while ((count = gzipIn.read(buffer)) != -1) {            baos.write(buffer, 0, count);        }        gzipIn.close();        return baos.toByteArray();    }    /**     * Decompresses the input byte array using GZIP.     *     * @param binaryInput Array of bytes that should be decompressed.     * @return Decompressed bytes     * @throws IOException     */    public static byte[] gunzip(byte[] binaryInput) throws IOException {        ByteArrayInputStream bais = new ByteArrayInputStream(binaryInput);        return gunzip(bais);    }}