文件的压缩和解压

//文件的压缩和解压
public class GzipUtils {

public static void zip(String sourcePath, String outPath) throws Exception {
    zip(new File(sourcePath), new File(outPath));
}

public static void zip(File source, File out) throws Exception {
    zip(new FileInputStream(source), new FileOutputStream(out));
}

public static void zip(InputStream is, OutputStream os) throws Exception {
    GZIPOutputStream gos = null;
    try {
        gos = new GZIPOutputStream(os);
        int len;
        byte[] buffer = new byte[1024];
        while ((len = is.read(buffer)) != -1) {
            gos.write(buffer, 0, len);
        }
    } finally {
        StreamUtils.closeStream(gos);
        StreamUtils.closeStream(os);
        StreamUtils.closeStream(is);
    }
}

public static void unZip(String zipPath, String unzipPath)
        throws Exception {
    unZip(new File(zipPath), new File(unzipPath));
}

public static void unZip(File zipFile, File unzipFile) throws Exception {
    unZip(new FileInputStream(zipFile), new FileOutputStream(unzipFile));

}

public static void unZip(InputStream is, OutputStream os) throws Exception {
    GZIPInputStream gis = null;
    try {
        gis = new GZIPInputStream(is);
        int len;
        byte[] buffer = new byte[1024];
        while ((len = gis.read(buffer)) != -1) {
            os.write(buffer, 0, len);
        }
    } finally {
        StreamUtils.closeStream(os);
        StreamUtils.closeStream(gis);
        StreamUtils.closeStream(is);
    }
}

}