mainframe.java~58~

用JAVA语言实现的压缩解压Zip文件

package jzipdemo;

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.util.*;
import java.util.zip.*;

/**
 * <p>Title: </p>
 * <p>Description: </p>
 * <p>Copyright: Copyright (c) 2002</p>
 * <p>Company: </p>
 * @author unascribed
 * @version 1.0
 */

public class MainFrame extends JFrame {
  private JPanel contentPane;
  private BorderLayout borderLayout1 = new BorderLayout();
  private JScrollPane jScrollPane1 = new JScrollPane();
  private JTextArea jTextArea1 = new JTextArea();
  private JButton jButton1 = new JButton();
  private JPanel jPanel1 = new JPanel();
  private JTextField jTextField1 = new JTextField();
  private JTextField jTextField2 = new JTextField();
  private JLabel jLabel1 = new JLabel();
  private JLabel jLabel2 = new JLabel();
  private GridLayout gridLayout1 = new GridLayout();

  //Construct the frame
  public MainFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  //Component initialization
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(MainFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(461, 307));
    this.setTitle("JZipDemo");
    jTextArea1.setText("unzip and zip information");
    jButton1.setFont(new java.awt.Font("Dialog", 0, 14));
    jButton1.setToolTipText("");
    jButton1.setText("start");
    jButton1.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        jButton1_actionPerformed(e);
      }
    });
    jLabel1.setFont(new java.awt.Font("Dialog", 0, 12));
    jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel1.setText("source path :");
    jLabel2.setFont(new java.awt.Font("Dialog", 0, 12));
    jLabel2.setHorizontalAlignment(SwingConstants.CENTER);
    jLabel2.setText("dictation path :");
    jPanel1.setLayout(gridLayout1);
    gridLayout1.setColumns(2);
    gridLayout1.setHgap(10);
    gridLayout1.setRows(2);
    contentPane.add(jScrollPane1, BorderLayout.CENTER);
    jScrollPane1.getViewport().add(jTextArea1, null);
    contentPane.add(jButton1, BorderLayout.SOUTH);
    contentPane.add(jPanel1, BorderLayout.NORTH);
    jPanel1.add(jLabel1, null);
    jPanel1.add(jTextField1, null);
    jPanel1.add(jLabel2, null);
    jPanel1.add(jTextField2, null);
  }
  //Overridden so we can exit when window is closed
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void jButton1_actionPerformed(ActionEvent e) {
    String sour = this.jTextField1.getText();
    String dest = this.jTextField2.getText();
    String sourExt=sour.substring(sour.length()-4,sour.length()).toLowerCase();
    String destExt=dest.substring(dest.length()-4,dest.length()).toLowerCase();

    if(sourExt.equals(".zip")){
      try{

        unzip();
      }catch(Exception err){
        err.printStackTrace();
      }
    }

    if(destExt.equals(".zip")){
      try{

        zip();

      }catch(Exception err){
        err.printStackTrace();
      }
    }

  }
  void unzip()throws Exception{
    byte[] buffer = new byte[1024];
    DataInputStream dis = null;
    DataOutputStream dos = null;
    FileOutputStream fos = null;

    File file = new File(this.jTextField2.getText());
    if (!file.exists())
      file.mkdirs();

    ZipEntry ze =null;
    ZipFile zf = new ZipFile(new File(this.jTextField1.getText()));
    Enumeration enum = zf.entries();
    if (enum.hasMoreElements()){
      ze = (ZipEntry)enum.nextElement();
    }
    System.out.println(ze.getName());

    file = new File(this.jTextField2.getText()+File.separator+ze.getName());
    if (!file.exists()){
      file.createNewFile();
    }

    InputStream is = zf.getInputStream(ze);
    dis = new DataInputStream(is);
    fos = new FileOutputStream(file);
    dos = new DataOutputStream(fos);

    this.jTextArea1.append("Starting unzip ......\n");
    int bytes;
    while((bytes=dis.read(buffer,0,buffer.length))!=-1){
      dos.write(buffer,0,bytes);
    }
    dis.close();
    dos.close();
    this.jTextArea1.append("\t"+"unzipped "+ze.getName()+"\n");
    this.jTextArea1.append("Unzip complete.\n");


  }

  void zip()throws Exception{
    byte[] buffer = new byte[1024];

    File file = new File(this.jTextField1.getText());
    FileInputStream fis = new FileInputStream(file);
    DataInputStream dis = new DataInputStream(fis);

    File zipfile = new File(this.jTextField2.getText());
    if (!zipfile.exists()){
      File zipdir = new File(zipfile.getAbsolutePath());
      if (!zipdir.exists()){
        zipdir.mkdirs();
      }
      zipfile.createNewFile();
    }
    ZipEntry ze = new ZipEntry(this.jTextField1.getText());
   // ZipFile zf = new ZipFile(zipfile);
    FileOutputStream fos = new FileOutputStream(zipfile);
    ZipOutputStream zos = new ZipOutputStream(fos);
    zos.setMethod(ZipOutputStream.DEFLATED);
    zos.putNextEntry(ze);
    DataOutputStream dos = new DataOutputStream(zos);
    this.jTextArea1.append("Starting zip ......\n");
    int bytes;
    if ((bytes=dis.read(buffer,0,buffer.length))!=-1){
      dos.write(buffer,0,bytes);
    }
    dis.close();
    dos.close();
    this.jTextArea1.append("\t"+"Zipped"+this.jTextField1.getText()+"\n");
    this.jTextArea1.append("Zip complete.\n");



  }
}