java实现压缩与解压问题

系统管理员 2022-05-29 05:53 274阅读 0赞

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软件截图如上图，首先选择一个文件，输入压缩后的文件名

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点击解压：

选择压缩好的文件进行解压：

![format_png 5][]![format_png 6][]

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();  
                 }  
             }  
         }  
        
    }

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[format_png 5]: https://imgconvert.csdnimg.cn/aHR0cDovL2ltZy1ibG9nLmNzZG4ubmV0LzIwMTgwMzE4MTczODA3NDYw?x-oss-process=image/format,png
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