javaword.java~2~

一个功能比MiniEdit更强的JAVA编写的记事本小程序

        bConection = new JButton("连接", new ImageIcon("ico/rs.gif"));
        bCancel = new JButton("取消", new ImageIcon("ico/rq.gif"));
        // 设置取消按钮事件响应
        bCancel.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setVisible(false);
            }
        });
        this.addWindowListener(this);
        inputPane.add(lServer);
        inputPane.add(tServer);
        inputPane.add(lDbName);
        inputPane.add(tDbName);
        inputPane.add(lSql);
        inputPane.add(tSql);
        inputPane.add(lUsername);
        inputPane.add(tUsername);
        inputPane.add(lPassword);
        inputPane.add(password);
        contentPane.add(buttonPane, BorderLayout.SOUTH);
        buttonPane.add(bConection);
        buttonPane.add(bCancel);
        setSize(390, 180);
        setResizable(false);
        // 设置确定按钮事件响应
        bConection.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                DatabaseQuery dbq = new DatabaseQuery(Database.this);
                dbq.getDatabaseInfo();
                dbq.setVisible(true);
            }
        });
        // 增加文本域事件响应
        tServer.addKeyListener(this);
        tDbName.addKeyListener(this);
        tSql.addKeyListener(this);
        tUsername.addKeyListener(this);
        password.addKeyListener(this);
    }
    // 数据库实现
    class DatabaseQuery extends JDialog {
        JScrollPane scroll;
        JPanel shutDownPanel = new JPanel();
        JButton bShut;
        Statement stat;
        ResultSet rs;
        final JDialog dbDialog;
        Connection conn;
        public DatabaseQuery(JDialog dbDialog) {
            super(dbDialog, "查询结果", true);
            this.dbDialog = dbDialog;
            setTitle("查询结果");
            setDefaultCloseOperation(HIDE_ON_CLOSE);
            setSize(300, 250);
        }
        //
        public void getDatabaseInfo() {
            //获取文本域输入的信息
            strServer = tServer.getText().trim();
            strDbName = tDbName.getText().trim();
            strSql = tSql.getText().trim();
            strUsername = tUsername.getText().trim();
            strPassword = password.getText().trim();
            getContentPane().add(shutDownPanel, BorderLayout.SOUTH);
            bShut = new JButton("关闭", new ImageIcon("ico/exit.gif"));
            shutDownPanel.add(bShut);
            bShut.addActionListener(new ActionListener() {
                public void actionPerformed(ActionEvent e) {
                    setVisible(false);
                }
            });
            Vector cloumn = new Vector();
            Vector rows = new Vector();
            try {

                //System.out.println(strSql);
                Class.forName("com.microsoft.jdbc.sqlserver.SQLServerDriver");
                String url = "jdbc:microsoft:sqlserver://"+strServer+":1433;databaseName="+strDbName+";";
                String username = strUsername;
                String password = strPassword;
                conn = DriverManager.getConnection(url, username, password);
                //conn = getConnection();
                stat = conn.createStatement();
                rs = stat.executeQuery(strSql);
                ResultSetMetaData meta = rs.getMetaData();
                for (int i = 1; i <= meta.getColumnCount(); i++)
                    cloumn.addElement(meta.getColumnName(i));
                while (rs.next()) {
                    rows.addElement(getRowNext(rs, meta));
                }
                JTable table = new JTable(rows, cloumn);
                scroll = new JScrollPane(table);
                getContentPane().add(scroll, BorderLayout.CENTER);
            } catch (Exception e) {
                JOptionPane.showMessageDialog(DatabaseQuery.this, "数据库连接错误",
                        "错误", JOptionPane.ERROR_MESSAGE);
                e.printStackTrace();
            }
        }
        public Vector getRowNext(ResultSet rs, ResultSetMetaData meta)
                throws Exception {
            Vector currentRow = new Vector();
            for (int i = 1; i <= meta.getColumnCount(); i++) {
                currentRow.addElement(rs.getString(i));
            }
            return currentRow;
        }
        //从当前目录中获取"database.properties"的文件
       /* public Connection getConnection() throws Exception {
            Properties props = new Properties();
            FileInputStream in = new FileInputStream("database.properties");
            props.load(in);
            in.close();
            String drivers = props.getProperty("jdbc.drivers");
            if (drivers != null)
                System.setProperty("jdbc.drivers", drivers);
            String url = props.getProperty("jdbc.url") + strServer
                    + ":1433;databaseName=" + strDbName + ";";
            //System.out.println(url);
            String username = props.getProperty("jdbc.username") + strUsername;
            String password = props.getProperty("jdbc.password") + strPassword;
            return DriverManager.getConnection(url, username, password);
        }*/
    }
    public void keyTyped(KeyEvent e) {
    }
    public void keyPressed(KeyEvent e) {
    }
    public void keyReleased(KeyEvent e) {
        if (e.getSource() == password || e.getSource() == tUsername)
            bConection.setEnabled(true);
    }
    public void windowOpened(WindowEvent e) {
        bConection.setEnabled(false);
    }
    public void windowClosing(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowClosed(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowIconified(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowDeiconified(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowActivated(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowDeactivated(WindowEvent e) {
        // TODO 自动生成方法存根
    }
}
//查找实现
class FindDialog extends JDialog implements ActionListener, WindowListener,
        KeyListener {
    final JTextArea text;
    JLabel lfind, lreplace;
    JTextField tfind, treplace;
    JButton bfind, breplace, bnext, bcancel;
    JPanel fieldPane, buttonPane;
    String strFind, strReplace;
    int txtPlace, txtLen, strNext;
    FindDialog(final JTextArea text, JFrame findDialog) {
        super(findDialog, "查找/替换", false);
        this.text = text;
        Container findPane = getContentPane();
        lfind = new JLabel("查找内容");
        lreplace = new JLabel("替换");
        tfind = new JTextField();
        treplace = new JTextField();
        bfind = new JButton("查找", new ImageIcon("ico/Find16.gif"));
        breplace = new JButton("替换", new ImageIcon("ico/Replace16.gif"));
        bcancel = new JButton("取消", new ImageIcon("ico/exit.gif"));
        bnext = new JButton("下一个", new ImageIcon("ico/FindAgain16.gif"));
        fieldPane = new JPanel();
        buttonPane = new JPanel();
        fieldPane.setLayout(new GridLayout(2, 2));
        findPane.add(fieldPane, BorderLayout.CENTER);
        findPane.add(buttonPane, BorderLayout.SOUTH);
        fieldPane.add(lfind);
        fieldPane.add(tfind);
        fieldPane.add(lreplace);
        fieldPane.add(treplace);
        buttonPane.add(bfind);
        buttonPane.add(breplace);
        buttonPane.add(bnext);
        buttonPane.add(bcancel);
        bfind.addActionListener(this);
        breplace.addActionListener(this);
        bcancel.addActionListener(this);
        this.addWindowListener(this);
        tfind.addKeyListener(this);
        treplace.addKeyListener(this);
        bnext.addActionListener(this);

        setSize(370, 120);
        setResizable(false);
    }
    public void actionPerformed(ActionEvent e) {
        if (e.getSource() == bfind) {
            find();
        }
        if (e.getSource() == breplace) {
            replace();
        }
        if (e.getSource() == bcancel) {
            setVisible(false);
        }
        if (e.getSource() == bnext) {
            findNext();
        }
    }
    //查找处理
    private void find() {
        strFind = tfind.getText();
        strNext = 0; //开始位置
        txtPlace = text.getText().indexOf(strFind, strNext);
        txtLen = txtPlace + strFind.length();
        text.select(txtPlace, txtLen);
        strNext = text.getSelectionEnd(); //选中内容的最后位置
        if (txtPlace == -1) /*没有找到的处理*/ {
            JOptionPane.showMessageDialog(null, "没你找到你需要的内容", "查找",
                    JOptionPane.INFORMATION_MESSAGE);
        }
        bnext.setEnabled(true);
    }
    //替换处理
    private void replace() {
        strReplace = treplace.getText();
        text.replaceRange(strReplace, txtPlace, txtPlace + strFind.length());
    }
    //查找下一个处理
    private void findNext() {
        bfind.setEnabled(false);
        txtPlace = text.getText().indexOf(strFind, strNext);
        txtLen = txtPlace + strFind.length();
        text.select(txtPlace, txtLen);
        strNext = text.getSelectionEnd(); //获取查找下一个内容的最后位置
        if (txtPlace == -1) /*没有找到的处理*/ {
            JOptionPane.showMessageDialog(null, "没你找到你需要的内容", "查找下一个",
                    JOptionPane.INFORMATION_MESSAGE);
            strNext = 0; //没有找到初始化位置,以变重新查找
            tfind.setText("");
            bnext.setEnabled(false);
            breplace.setEnabled(false);
        }
    }
    public void windowOpened(WindowEvent e) {
        bfind.setEnabled(false);
        breplace.setEnabled(false);
        bnext.setEnabled(false);
    }
    public void windowClosing(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowClosed(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowIconified(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowDeiconified(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowActivated(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void windowDeactivated(WindowEvent e) {
        // TODO 自动生成方法存根
    }
    public void keyTyped(KeyEvent e) {
        // TODO 自动生成方法存根
    }
    public void keyPressed(KeyEvent ke) {
        if (ke.getSource() == tfind)
            bfind.setEnabled(true);
        if (ke.getSource() == treplace)
            breplace.setEnabled(true);
    }
    public void keyReleased(KeyEvent e) {
        // TODO 自动生成方法存根
    }
}
// 帮助的关于对话框行为
class ActionAbout extends JDialog {
    public ActionAbout(JFrame dialog) {
        super(dialog, "关于", true);
        Container contentPane = getContentPane();
        contentPane.add(new JLabel("<html><h1>欢迎使用JAVA字处理软件</h1><hr>"
                + "<h2>版本号(Beta):1.0</h2><hr>" + "<h3>******</h3></html>"),
                BorderLayout.CENTER);
        JPanel p = new JPanel();
        JButton ok = new JButton("确定", new ImageIcon("ico/ok.gif"));
        setResizable(false);
        ok.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                setVisible(false);
            }
        });
        p.add(ok);
        contentPane.add(p, BorderLayout.SOUTH);
        contentPane.add(new JLabel(new ImageIcon("ico/duke.gif")),
                BorderLayout.WEST);
        setSize(400, 250);
    }
}