Java 使用 GZIP 进行压缩和解压缩
2018-07-20 来源:open-open
import java.util.zip.GZIPOutputStream; import java.io.FileOutputStream; import java.io.FileInputStream; import java.io.FileNotFoundException; import java.io.IOException; /** * ----------------------------------------------------------------------------- * Used to provide an example of compressing a file using the GZIP Format. * * @version 1.0 * @author Jeffrey M. Hunter (jhunter@idevelopment.info) * @author <a href="http://www.idevelopment.info">http://www.idevelopment.info * ----------------------------------------------------------------------------- */ public class CompressFileGZIP { /** * Perform file compression. * @param inFileName Name of the file to be compressed */ private static void doCompressFile(String inFileName) { try { System.out.println("Creating the GZIP output stream."); String outFileName = inFileName + ".gz"; GZIPOutputStream out = null; try { out = new GZIPOutputStream(new FileOutputStream(outFileName)); } catch(FileNotFoundException e) { System.err.println("Could not create file: " + outFileName); System.exit(1); } System.out.println("Opening the input file."); FileInputStream in = null; try { in = new FileInputStream(inFileName); } catch (FileNotFoundException e) { System.err.println("File not found. " + inFileName); System.exit(1); } System.out.println("Transfering bytes from input file to GZIP Format."); byte[] buf = new byte[1024]; int len; while((len = in.read(buf)) > 0) { out.write(buf, 0, len); } in.close(); System.out.println("Completing the GZIP file"); out.finish(); out.close(); } catch (IOException e) { e.printStackTrace(); System.exit(1); } } /** * Sole entry point to the class and application. * @param args Array of String arguments. */ public static void main(String[] args) { if (args.length != 1) { System.err.println("Usage: java CompressFileGZIP filename"); } else { doCompressFile(args[0]); } } }
标签:
版权申明:本站文章部分自网络,如有侵权,请联系:west999com@outlook.com
特别注意:本站所有转载文章言论不代表本站观点!
本站所提供的图片等素材,版权归原作者所有,如需使用,请与原作者联系。
上一篇:VC++中获取句柄的所有方法
下一篇:通过java来获取系统的信息
最新资讯
热门推荐