java实现压缩与解压问题

软件截图如上图，首先选择一个文件，输入压缩后的文件名

点击解压：

选择压缩好的文件进行解压：

完整代码如下：

import java.awt.EventQueue;
import java.awt.Font;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.util.Enumeration;
import java.util.zip.CRC32;
import java.util.zip.CheckedInputStream;
import java.util.zip.CheckedOutputStream;
import java.util.zip.ZipEntry;
import java.util.zip.ZipException;
import java.util.zip.ZipFile;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;

import javax.swing.GroupLayout;
import javax.swing.GroupLayout.Alignment;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JTextField;
import javax.swing.LayoutStyle.ComponentPlacement;


public class yasuotools {

	private JFrame frame;
	private JTextField textField;
	public String path;
	public String path2;
	public String path1;
	public String path3;
	public String name;
	private JTextField textField_1;
	private static File file;
	private final static int BUFFER_SIZE = 20480;  
	

	/**
	 * Launch the application.
	 */
	public static void main(String[] args) {
		EventQueue.invokeLater(new Runnable() {
			public void run() {
				try {
					yasuotools window = new yasuotools();
					window.frame.setVisible(true);
				} catch (Exception e) {
					e.printStackTrace();
				}
			}
		});
	}

	/**
	 * Create the application.
	 */
	public yasuotools() {
		initialize();
	}

	/**
	 * Initialize the contents of the frame.
	 */
	private void initialize() {
		frame = new JFrame();
		frame.setTitle("\u538B\u7F29\u89E3\u538B\u5DE5\u5177");
		frame.setBounds(100, 100, 647, 310);
		frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
		JLabel label = new JLabel("\u8BF7\u9009\u62E9\u4E00\u4E2A\u6587\u4EF6\uFF1A");
		label.setFont(new Font("隶书", Font.PLAIN, 20));
		
		textField = new JTextField();
		textField.setFont(new Font("隶书", Font.PLAIN, 20));
		textField.setColumns(10);
		
		JButton btnNewButton = new JButton("\u9009\u62E9\u6587\u4EF6");
		btnNewButton.setFont(new Font("隶书", Font.PLAIN, 20));
		
		JButton button = new JButton("\u538B\u7F29");
		button.setFont(new Font("隶书", Font.PLAIN, 20));
		
		JButton button_1 = new JButton("\u89E3\u538B");
		button_1.setFont(new Font("隶书", Font.PLAIN, 20));
		
		btnNewButton.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				JFileChooser filechooser = new JFileChooser();
				filechooser.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);//设置仅能选择文件
				filechooser.setMultiSelectionEnabled(true);//
				int returnValue = filechooser.showOpenDialog(filechooser);
				{
					
				if(returnValue == JFileChooser.APPROVE_OPTION)
				{
					
					
					file = filechooser.getSelectedFile();
					
					path=file.getAbsolutePath();
					name=file.getName();
					textField.setText(path);
					path1=file.getParent();
				}
			}
			}
		});
		
		JLabel label_1 = new JLabel("\u538B\u7F29\u540E\u7684\u6587\u4EF6\u540D\uFF1A");
		label_1.setFont(new Font("隶书", Font.PLAIN, 20));
		
		textField_1 = new JTextField();
		textField_1.setFont(new Font("隶书", Font.PLAIN, 20));
		textField_1.setColumns(10);
		
		button.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				
				try {
		            zipOut(file, path1+textField_1.getText()+".zip");
		            JOptionPane.showMessageDialog(null, "压缩成功啦！！╮(╯▽╰)╭", "恭喜：",JOptionPane.PLAIN_MESSAGE);
		        } catch (IOException e1) {
		        	JOptionPane.showMessageDialog(null, "压缩失败了！(；′⌒`)", "错误",JOptionPane.ERROR_MESSAGE);
		        }
			}

			
		});
		button_1.addActionListener(new ActionListener() {
			public void actionPerformed(ActionEvent e) {
				
				
				unZip(path);
				JOptionPane.showMessageDialog(null, "解压成功啦！！╮(╯▽╰)╭", "恭喜：",JOptionPane.PLAIN_MESSAGE);
		    }  
			
		});
		
		
		GroupLayout groupLayout = new GroupLayout(frame.getContentPane());
		groupLayout.setHorizontalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(54)
					.addGroup(groupLayout.createParallelGroup(Alignment.LEADING)
						.addGroup(groupLayout.createSequentialGroup()
							.addComponent(label_1, GroupLayout.PREFERRED_SIZE, 160, GroupLayout.PREFERRED_SIZE)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(textField_1, GroupLayout.PREFERRED_SIZE, 229, GroupLayout.PREFERRED_SIZE))
						.addGroup(groupLayout.createSequentialGroup()
							.addComponent(label)
							.addPreferredGap(ComponentPlacement.RELATED)
							.addComponent(textField, GroupLayout.PREFERRED_SIZE, 229, GroupLayout.PREFERRED_SIZE)
							.addPreferredGap(ComponentPlacement.UNRELATED)
							.addComponent(btnNewButton, GroupLayout.PREFERRED_SIZE, 121, GroupLayout.PREFERRED_SIZE)))
					.addContainerGap(45, Short.MAX_VALUE))
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(127)
					.addComponent(button, GroupLayout.PREFERRED_SIZE, 121, GroupLayout.PREFERRED_SIZE)
					.addPreferredGap(ComponentPlacement.RELATED, 134, Short.MAX_VALUE)
					.addComponent(button_1, GroupLayout.PREFERRED_SIZE, 121, GroupLayout.PREFERRED_SIZE)
					.addGap(126))
		);
		groupLayout.setVerticalGroup(
			groupLayout.createParallelGroup(Alignment.LEADING)
				.addGroup(groupLayout.createSequentialGroup()
					.addGap(63)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label)
						.addComponent(textField, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
						.addComponent(btnNewButton))
					.addPreferredGap(ComponentPlacement.RELATED)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(label_1, GroupLayout.PREFERRED_SIZE, 24, GroupLayout.PREFERRED_SIZE)
						.addComponent(textField_1, GroupLayout.PREFERRED_SIZE, 30, GroupLayout.PREFERRED_SIZE))
					.addGap(18)
					.addGroup(groupLayout.createParallelGroup(Alignment.BASELINE)
						.addComponent(button, GroupLayout.PREFERRED_SIZE, 33, GroupLayout.PREFERRED_SIZE)
						.addComponent(button_1, GroupLayout.PREFERRED_SIZE, 33, GroupLayout.PREFERRED_SIZE))
					.addGap(79))
		);
		frame.getContentPane().setLayout(groupLayout);
	}
	private static void zipOut(File file, String dest) throws IOException {
        // 创建文件输入流 和 zip输出流
        FileInputStream fis = null;
        ZipOutputStream zos = new ZipOutputStream(
                              new FileOutputStream(dest));

        // 获取文件夹内所以File对象，并将各文件逐一压缩
        File[] files = file.listFiles();
        for (File f : files) {
            fis = new FileInputStream(f);// 读入单个文件

            // 为每个文件添加zip条目
            zos.putNextEntry(new ZipEntry(f.getName()));

            // 将各文件压缩
            byte[] buf = new byte[1024];
            int len;
            while ((len = fis.read(buf)) != -1) {
                zos.write(buf, 0, len);
            }

            zos.closeEntry();
        }

        zos.close();
        if (fis != null)
            fis.close();
    }
	 public static void unZip(String path)  
     {  
      int count = -1;  
      String savepath = "";  

      File file = null;  
      InputStream is = null;  
      FileOutputStream fos = null;  
      BufferedOutputStream bos = null;  

      savepath = path.substring(0, path.lastIndexOf(".")) + File.separator; //保存解压文件目录  
      new File(savepath).mkdir(); //创建保存目录  
      ZipFile zipFile = null;  
      try  
      {  
          zipFile = new ZipFile(path); //解决中文乱码问题  
          Enumeration entries = zipFile.entries();  

          while(entries.hasMoreElements())  
          {  
              byte buf[] = new byte[BUFFER_SIZE];  

              ZipEntry entry = (ZipEntry)entries.nextElement();  

              String filename = entry.getName();  
              boolean ismkdir = false;  
              if(filename.lastIndexOf("/") != -1){ //检查此文件是否带有文件夹  
                 ismkdir = true;  
              }  
              filename = savepath + filename;  

              if(entry.isDirectory()){ //如果是文件夹先创建  
                 file = new File(filename);  
                 file.mkdirs();  
                  continue;  
              }  
              file = new File(filename);  
              if(!file.exists()){ //如果是目录先创建  
                 if(ismkdir){  
                 new File(filename.substring(0, filename.lastIndexOf("/"))).mkdirs(); //目录先创建  
                 }  
              }  
              file.createNewFile(); //创建文件  

              is = zipFile.getInputStream(entry);  
              fos = new FileOutputStream(file);  
              bos = new BufferedOutputStream(fos, BUFFER_SIZE);  

              while((count = is.read(buf)) > -1)  
              {  
                  bos.write(buf, 0, count);  
              }  
              bos.flush();  
              bos.close();  
              fos.close();  

              is.close();  
          }  

          zipFile.close();  

      }catch(IOException ioe){  
          ioe.printStackTrace();  
      }finally{  
             try{  
             if(bos != null){  
                 bos.close();  
             }  
             if(fos != null) {  
                 fos.close();  
             }  
             if(is != null){  
                 is.close();  
             }  
             if(zipFile != null){  
                 zipFile.close();  
             }  
             }catch(Exception e) {  
                 e.printStackTrace();  
             }  
         }  
     }  
    
}