gzipcompress.java

网络书店的设计与实现 网络书店的设计与实现

//: c11:GZIPcompress.java
// From 'Thinking in Java, 2nd ed.' by Bruce Eckel
// www.BruceEckel.com. See copyright notice in CopyRight.txt.
// Uses GZIP compression to compress a file 
// whose name is passed on the command line.
import java.io.*;
import java.util.zip.*;

public class GZIPcompress {
  public static void main(String[] args) {
    try {
      BufferedReader in =
        new BufferedReader(
          new FileReader(args[0]));
      BufferedOutputStream out =
        new BufferedOutputStream(
          new GZIPOutputStream(
            new FileOutputStream("test.gz")));
      System.out.println("Writing file");
      int c;
      while((c = in.read()) != -1)
        out.write(c);
      in.close();
      out.close();
      System.out.println("Reading file");
      BufferedReader in2 =
        new BufferedReader(
          new InputStreamReader(
            new GZIPInputStream(
              new FileInputStream("test.gz"))));
      String s;
      while((s = in2.readLine()) != null)
        System.out.println(s);
    } catch(Exception e) {
      e.printStackTrace();
    }
  }
} ///:~