package com.my.bean;import java.io.Serializable;public class EncryptedFile implements Serializable {    private String filePath;    private String keyFullName;    public EncryptedFile() {    }    public String getFilePath() {        return filePath;    }    public void setFilePath(String filePath) {        this.filePath = filePath;    }    public String getKeyFullName() {        return keyFullName;    }    public void setKeyFullName(String keyFullName) {        this.keyFullName = keyFullName;    }    @Override    public String toString() {        return "EncryptedFile{" +                "filePath=‘" + filePath + ‘\‘‘ +                ", keyFullName=‘" + keyFullName + ‘\‘‘ +                ‘}‘;    }}

package com.my.bean;import java.io.Serializable;import java.util.ArrayList;import java.util.List;public class User implements Serializable {    private String username;    private String password;    private List<EncryptedFile> encryptedFileList = new ArrayList<>();    public User() {    }    public String getUsername() {        return username;    }    public void setUsername(String username) {        this.username = username;    }    public String getPassword() {        return password;    }    public void setPassword(String password) {        this.password = password;    }    public List<EncryptedFile> getEncryptedFileList() {        return encryptedFileList;    }    public void setEncryptedFileList(List<EncryptedFile> encryptedFileList) {        this.encryptedFileList = encryptedFileList;    }}

package com.my.service;import com.my.bean.User;import java.io.*;public class EncryptService {    private String username;    private static String DEFAULT_KEY_URL = ".//user//";    private int key[] = new int[128];    public EncryptService(User user) {        username = user.getUsername();    }    public void readKey(String keyFullName) {        File keyFile = new File(DEFAULT_KEY_URL + username + "//" + keyFullName);        FileInputStream localKey = null;        try {            localKey = new FileInputStream(keyFile);            for (int i = 0; i < 128; ++i) {                key[i] = localKey.read();            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (localKey != null) {                try {                    localKey.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }    public void makeKey(String keyName) {        FileOutputStream fos = null;        try {            File keyFile = new File(DEFAULT_KEY_URL + username + "//" + keyName + ".key");            fos = new FileOutputStream(keyFile);            for (int i = 0; i < 128; ++i) {                fos.write((int) (Math.random() * 128));            }            readKey(keyName + ".key");        } catch (Exception e) {            e.printStackTrace();        } finally {            if (fos != null) {                try {                    fos.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }    }    public void encryptFile(String filePath, String keyFullName) {        readKey(keyFullName);        FileInputStream in = null;        FileOutputStream out = null;        File inFile = new File(filePath);        File outFile = new File(inFile.getParent() + "//TEMP_FILE");        try {            in = new FileInputStream(inFile);            out = new FileOutputStream(outFile);            int length = in.available();            for (int i = 0; i < length; ++i) {                out.write(in.read() + key[i % 128]);            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (in != null) {                try {                    in.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (out != null) {                try {                    out.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }        inFile.delete();        outFile.renameTo(inFile);    }    public void decryptFile(String filePath, String keyFullName) {        readKey(keyFullName);        FileInputStream in = null;        FileOutputStream out = null;        File inFile = new File(filePath);        File outFile = new File(inFile.getParent() + "//TEMP_FILE");        try {            in = new FileInputStream(inFile);            out = new FileOutputStream(outFile);            int length = in.available();            for (int i = 0; i < length; ++i) {                out.write(in.read() - key[i % 128]);            }        } catch (Exception e) {            e.printStackTrace();        } finally {            if (in != null) {                try {                    in.close();                } catch (IOException e) {                    e.printStackTrace();                }            }            if (out != null) {                try {                    out.close();                } catch (IOException e) {                    e.printStackTrace();                }            }        }        inFile.delete();        outFile.renameTo(inFile);    }}class EncryptServiceTest {    public static void main(String[] args) {        // 在完整程序中用户信息由Main界面提供        User user = new User();        user.setUsername("xkfx");        EncryptService encryptService = new EncryptService(user);        encryptService.encryptFile(".//hi.txt", "main.key");        encryptService.decryptFile(".//hi.txt", "main.key");    }}

package com.my.service;import com.my.bean.EncryptedFile;import com.my.bean.User;import java.io.*;import java.util.List;public class PersistenceService {    private static String DEFAULT_DATA_URL = ".//conf//";    String username;    public PersistenceService(String username) {        this.username = username;    }    public void loadData(User user) {        BufferedReader br;        try {            br = new BufferedReader(new FileReader(new File(DEFAULT_DATA_URL + username + ".user")));            while (br.ready()) {                EncryptedFile file = new EncryptedFile();                file.setFilePath(br.readLine());                file.setKeyFullName(br.readLine());                user.getEncryptedFileList().add(file);            }        } catch (Exception e) {            e.printStackTrace();        }    }    public void saveData(User user) {        PrintWriter pw = null;        try {            pw = new PrintWriter(new FileWriter(new File(DEFAULT_DATA_URL + username + ".user")));            for (EncryptedFile file : user.getEncryptedFileList()) {                pw.println(file.getFilePath());                pw.println(file.getKeyFullName());            }        } catch (Exception e) {            e.printStackTrace();        } finally {            try {                pw.close();            } catch (Exception e) {                e.printStackTrace();            }        }    }}class PersistenceServiceTest {    public static void main(String[] args) {        User user = new User();        user.setUsername("zzz");        EncryptedFile file1 = new EncryptedFile();        file1.setFilePath("aaaa");        file1.setKeyFullName("bbbbbbbbbb");        EncryptedFile file2 = new EncryptedFile();        file2.setFilePath("xxxx");        file2.setKeyFullName("qqqqqqq");        user.getEncryptedFileList().add(file1);        user.getEncryptedFileList().add(file2);        PersistenceService persistenceService = new PersistenceService(user.getUsername());        // 存进文件，默认为 conf/username.user        persistenceService.saveData(user);        // 取出来并输出        persistenceService.loadData(user);        for (EncryptedFile file : user.getEncryptedFileList()) {            System.out.println(file);        }    }}

package com.my.ui;import com.my.bean.EncryptedFile;import com.my.bean.User;import javax.swing.*;import java.awt.*;public class EncryptedFileManagement extends JFrame {    private User user;    private Main mainFrame;    public EncryptedFileManagement(User user) {        this.user = user;        setTitle("加密文件管理");        setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);        setLocationRelativeTo(null);        setResizable(false);        setLayout(new BorderLayout());        updateFrame();    }    public void setMainFrame(Main mainFrame) {        this.mainFrame = mainFrame;        // 传递主界面的一个引用，以便监控子窗口的Action    }    public void addEncryptedFile(String filePath, String keyFullName) {        EncryptedFile encryptedFile = new EncryptedFile();        user.getEncryptedFileList().add(encryptedFile);        encryptedFile.setFilePath(filePath);        encryptedFile.setKeyFullName(keyFullName);        updateFrame();    }    public boolean removeEncryptedFile(String filePath, String keyFullName) {        int listSize = user.getEncryptedFileList().size();        for (int i = 0; i != listSize; ++i) {            EncryptedFile file = user.getEncryptedFileList().get(i);            if (file.getFilePath().equals(filePath) && file.getKeyFullName().equals(keyFullName)) {                user.getEncryptedFileList().remove(i);                updateFrame();                return true;            }        }        return false;    }    JPanel listPanel = new JPanel();    public void updateFrame() {        listPanel.removeAll(); // 必须调用这个方法，否则视图显示将和真实情况不匹配        listPanel.setLayout(new GridLayout(user.getEncryptedFileList().size(), 2));        for (EncryptedFile file : user.getEncryptedFileList()) {            JButton buttonFilePath = new JButton("■" + file.getFilePath());            JButton buttonKeyFullPath = new JButton("▲" + file.getKeyFullName());            listPanel.add(buttonFilePath);            listPanel.add(buttonKeyFullPath);            // 注册事件监听            buttonFilePath.addActionListener(mainFrame);            buttonKeyFullPath.addActionListener(mainFrame);            buttonFilePath.setFocusPainted(false);            buttonKeyFullPath.setFocusPainted(false);        };        setSize(482, user.getEncryptedFileList().size()*44 + 57);        add(listPanel, BorderLayout.CENTER);    }}class EncryptedFileManagementTest {    public static void main(String[] args) {        // 实际中是代理Main中的User        User user = new User();        user.setUsername("xkfx");        EncryptedFileManagement frame = new EncryptedFileManagement(user);        Main main = new Main(user);        main.setVisible(true);        frame.setMainFrame(main);        for (int i = 0; i != 5; ++i) {            frame.addEncryptedFile("D:\\workspace\\untitled1\\hi.txt", i + "main.key");        }        frame.setVisible(true);    }}

package com.my.ui;import com.my.bean.User;import com.my.service.EncryptService;import com.my.service.PersistenceService;import com.my.util.Iconst;import javax.swing.*;import java.awt.*;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;public class Main extends JFrame implements ActionListener {    // 保存服务对象    private User user;    private EncryptService encryptService;    PersistenceService persistenceService;    private EncryptedFileManagement encryptedFileManagement;    // 窗体默认大小    private static final int DEFAULT_WIDTH = 416;    private static final int DEFAULT_HEIGHT = 145;    // 全局组件    private JFileChooser fileChooser;    private JButton buttonEncrypt;    private JButton buttonDecrypt;    private JButton buttonMakeNewKey;    private JButton buttonEncryptedFileManagement;    private JButton buttonExit;    private JTextField textFilePath;    private JTextField textKeyName;    // 保存当前文件、密匙路径    private String filePath;    private String keyPath;    public void setFilePath(String filePath) {        this.filePath = filePath;    }    public void setKeyPath(String keyPath) {        this.keyPath = keyPath;    }    // 窗体初始化    public Main(User user) {        // 初始化用户和服务        this.user = user;        encryptService = new EncryptService(this.user);        persistenceService = new PersistenceService(this.user.getUsername());        persistenceService.loadData(this.user);        encryptedFileManagement = new EncryptedFileManagement(this.user);        encryptedFileManagement.setMainFrame(this);        // 初始化界面        setTitle("用户ID：" + user.getUsername());        setDefaultCloseOperation(0);        setSize(DEFAULT_WIDTH, DEFAULT_HEIGHT);        setResizable(false);        setLocationRelativeTo(null);        JPanel bigPanel = new JPanel();        // 布置主要界面        textFilePath = new JTextField();        textKeyName = new JTextField();        JButton buttonChooseFile = new JButton(Iconst.CHOOSE_FILE);        JButton buttonChooseKey = new JButton(Iconst.CHOOSE_KEY);        textFilePath.setEditable(false);        textKeyName.setEditable(false);        buttonChooseKey.setFocusPainted(false);        buttonChooseFile.setFocusPainted(false);        bigPanel.setLayout(new GridLayout(2, 3));        bigPanel.add(new JLabel("文件路径"));        bigPanel.add(textFilePath);        bigPanel.add(buttonChooseFile);        bigPanel.add(new JLabel("密匙名称"));        bigPanel.add(textKeyName);        bigPanel.add(buttonChooseKey);        JPanel buttonPanel = new JPanel();        // 布置按钮界面        buttonEncrypt = new JButton(Iconst.ENCRYPT);        buttonDecrypt = new JButton(Iconst.DECRYPT);        buttonMakeNewKey = new JButton(Iconst.CREATE_NEW_KEY);        buttonEncryptedFileManagement = new JButton(Iconst.ENCRYPTED_FILE_MANAGEMENT);        buttonExit = new JButton(Iconst.EXIT);        buttonEncrypt.setFocusPainted(false);        buttonDecrypt.setFocusPainted(false);        buttonMakeNewKey.setFocusPainted(false);        buttonEncryptedFileManagement.setFocusPainted(false);        buttonExit.setFocusPainted(false);        buttonPanel.setLayout(new FlowLayout());        buttonPanel.add(buttonEncrypt);        buttonPanel.add(buttonDecrypt);        buttonPanel.add(buttonMakeNewKey);        buttonPanel.add(buttonEncryptedFileManagement);        buttonPanel.add(buttonExit);        // 布置窗体        setLayout(new BorderLayout());        add(bigPanel, BorderLayout.CENTER);        add(buttonPanel, BorderLayout.SOUTH);        // 注册事件监听        buttonChooseFile.addActionListener(this);        buttonChooseKey.addActionListener(this);        buttonMakeNewKey.addActionListener(this);        buttonEncrypt.addActionListener(this);        buttonDecrypt.addActionListener(this);        buttonEncryptedFileManagement.addActionListener(this);        buttonExit.addActionListener(this);        // 创建文件选择器        fileChooser = new JFileChooser();    }    @Override    public void actionPerformed(ActionEvent e) {        if (e.getActionCommand().charAt(0) == "■".charAt(0)) {            String filePath = e.getActionCommand().substring(1, e.getActionCommand().length());            setFilePath(filePath);            textFilePath.setText(filePath);        }        if (e.getActionCommand().charAt(0) == "▲".charAt(0)) {            String keyFullName = e.getActionCommand().substring(1, e.getActionCommand().length());            setKeyPath(".//user//" + user.getUsername() + "//" + keyFullName);            textKeyName.setText(keyFullName);        }        if (e.getActionCommand().equals(Iconst.CHOOSE_FILE)) {            fileChooser.setCurrentDirectory(new File("."));            int result = fileChooser.showOpenDialog(null);            if (result == JFileChooser.APPROVE_OPTION) {                filePath = fileChooser.getSelectedFile().getPath();                textFilePath.setText(filePath);            }        }        if (e.getActionCommand().equals(Iconst.CHOOSE_KEY)) {            fileChooser.setCurrentDirectory(new File(".//user//" + user.getUsername()));            int result = fileChooser.showOpenDialog(null);            if (result == JFileChooser.APPROVE_OPTION) {                keyPath = fileChooser.getSelectedFile().getPath();                textKeyName.setText(new File(keyPath).getName());            }        }        if (e.getActionCommand().equals(Iconst.ENCRYPT)) {            if (filePath != null && !"".equals(filePath) && textKeyName.getText() != null && !"".equals(textKeyName.getText())) {                encryptService.encryptFile(filePath, textKeyName.getText());                encryptedFileManagement.addEncryptedFile(filePath, textKeyName.getText());                JOptionPane.showMessageDialog(this, "加密成功");            } else {                JOptionPane.showMessageDialog(this, "文件路径、密匙名称不能为空！");            }        }        if (e.getActionCommand().equals(Iconst.DECRYPT)) {            if (filePath != null && !"".equals(filePath) && textKeyName.getText() != null && !"".equals(textKeyName.getText()) ) {                if (encryptedFileManagement.removeEncryptedFile(filePath, textKeyName.getText())) {                    encryptService.decryptFile(filePath, textKeyName.getText());                    JOptionPane.showMessageDialog(this, "还原成功");                } else {                    JOptionPane.showMessageDialog(this, "该文件未被加密或密匙不匹配");                }            } else {                JOptionPane.showMessageDialog(this, "文件路径、密匙名称不能为空！");            }        }        if (e.getActionCommand().equals(Iconst.CREATE_NEW_KEY)) {            String keyName = JOptionPane.showInputDialog(this, "请输入新密匙的名称：");            if (keyName != null && !"".equals(keyName)) {                encryptService.makeKey(keyName);                JOptionPane.showMessageDialog(this, "成功创建新的密匙");            }            // 更新当前密匙路径            setKeyPath(".//user//" + user.getUsername() + "//" + keyName + ".key");            textKeyName.setText(keyName + ".key");        }        if (e.getActionCommand().equals(Iconst.ENCRYPTED_FILE_MANAGEMENT)) {            if (user.getEncryptedFileList().size() == 0) {                JOptionPane.showMessageDialog(this, "加密文件为空");            } else {                encryptedFileManagement.setVisible(true);            }        }        if (e.getActionCommand().equals(Iconst.EXIT)) {            if (JOptionPane.showConfirmDialog(this,"确定退出？") == 0) {                persistenceService.saveData(user);                this.dispose();                System.exit(0);            }        }    }}class MainTest {    public static void main(String[] args) {        User user = new User();        user.setUsername("xkfx");        EventQueue.invokeLater(() -> {            JFrame frame = new Main(user);            frame.setVisible(true);        });    }}

package com.my.util;/** * 常量定义 */public interface Iconst {    public static final String LOGIN = "登陆";    public static final String REGISTER = "注册";    public static final String CHOOSE_FILE = "选择文件";    public static final String CHOOSE_KEY = "选择密匙";    public static final String ENCRYPT = "加密";    public static final String DECRYPT = "还原";    public static final String CREATE_NEW_KEY = "生成新的密匙";    public static final String ENCRYPTED_FILE_MANAGEMENT = "管理文件";    public static final String EXIT = "退出";}