unzip.java

使用java解zip文件包。

package zipToolFunction;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2004</p>
 * <p>Company: </p>
 * @author not attributable
 * @version 1.0
 */
import java.io.*;
import java.util.zip.*;


public class UnZip
{
    static final int BUFFER = 204800;
    public static void main(String argv[])
    {
        try {
            BufferedOutputStream dest = null;
            String sInputFile="c:\\tmp.zip";
            FileInputStream fis = new
                FileInputStream(sInputFile);
            ZipInputStream zis = new
                ZipInputStream(new BufferedInputStream(fis));
            ZipEntry entry;
            while ((entry = zis.getNextEntry()) != null) {
                System.out.println("Extracting: " + entry);
                int count;
                if(entry.isDirectory()){
                    System.out.println("shuld create directory:"+
                                       entry.getName() );
                    File f;
                    f= new File(entry.getName());
                    if(!f.mkdir()){
                        System.out.println("create directroy ["+entry.getName()+"]error!");
                        continue;
                    }
                    continue;
                }
                byte data[] = new byte[BUFFER];
                // write the files to the disk
                FileOutputStream fos = new
                    FileOutputStream(entry.getName());
                dest = new
                    BufferedOutputStream(fos, BUFFER);
                while ((count = zis.read(data, 0, BUFFER))
                       != -1) {
                    dest.write(data, 0, count);
                }
                dest.flush();
                dest.close();
            }
            zis.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}