swing布局设计及事件监听和javabean数据管理事例

/* *这是一个关于菜单以及事件监听器的例子 *其中包含了 JMenu JTable JToolBar 等控件的使用 *本例子用的是access，请先建立txb.mdb *由不足之处请指教：[e-mail] */ import java.net.*; import java.io.*; import java.sql.*; import java.util.*; import java.awt.*; import javax.swing.*; import java.awt.event.*; import javax.swing.event.*; import javax.swing.UIManager; import javax.swing.plaf.metal.MetalLookAndFeel; import java.util.Vector; import javax.swing.table.DefaultTableModel; public class txb { public txb() { fsframe Frame1 = new fsframe(); Frame1.validate(); Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize(); Dimension frameSize = Frame1.getSize(); if (frameSize.height > screenSize.height) { frameSize.height = screenSize.height; } if (frameSize.width > screenSize.width) { frameSize.width = screenSize.width; } Frame1.setLocation((screenSize.width - frameSize.width)/2,(screenSize.height - frameSize.height)/2); Frame1.setDefaultCloseOperation(3); Frame1.show(); } public static void main(String[] args) { try { UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel"); }catch(Exception e) { e.printStackTrace(); } new txb(); } } class fsframe extends JFrame implements ActionListener { JLabel nemelabel = new JLabel("名字:"); JLabel passlabel = new JLabel("密码:"); JLabel zhuzhi = new JLabel("家庭住址:"); JButton insertbutton = new JButton("添加"); JButton exitbutton = new JButton("退出"); JTextField namefield = new JTextField("圣帅"); JTextField passfield = new JTextField("7820131"); JTextField addr = new JTextField("东营职业学院学2(410)宿舍"); JTextArea log = new JTextArea(10,0); JTextArea input = new JTextArea(4,0); JPanel inputpanel = new JPanel(); JPanel buttonpanel = new JPanel(); JScrollPane logscrollpane = new JScrollPane(); JScrollPane inputsrollpane = new JScrollPane(); JMenuBar Bare = new JMenuBar(); JMenu filemenu = new JMenu("文件(F)"); JMenuItem jianjie = new JMenuItem("关于本例"); JMenuItem creattablemenuitem = new JMenuItem("建表"); JMenuItem exitmenuitem = new JMenuItem("退出"); JMenu sqlmenu = new JMenu("SQL"); JMenuItem select = new JMenuItem("查看"); JMenuItem del = new JMenuItem("删除所有数据"); JMenuItem deltable = new JMenuItem("删除表"); JMenu about = new JMenu("关于(A)"); JMenuItem aboutme = new JMenuItem("关于作者"); JToolBar toolbar = new JToolBar(); public fsframe() { setSize(Toolkit.getDefaultToolkit().getScreenSize().width/2,380); this.setResizable(false); this.getContentPane().setLayout(new BorderLayout()); filemenu.setMnemonic(KeyEvent.VK_F); sqlmenu.setMnemonic(KeyEvent.VK_S); about.setMnemonic(KeyEvent.VK_A); Bare.add (filemenu); filemenu.add (creattablemenuitem); filemenu.add (exitmenuitem); exitmenuitem.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Q,ActionEvent.CTRL_MASK));// 快捷键 Bare.add(sqlmenu); sqlmenu.add(select); select.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_S, ActionEvent.CTRL_MASK)); select.addActionListener(this); sqlmenu.add(del); del.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_D,ActionEvent.CTRL_MASK)); del.addActionListener(this); sqlmenu.addSeparator(); sqlmenu.add(deltable); deltable.addActionListener(this); Bare.add(about); //about.add (jianjie); jianjie.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_Z,ActionEvent.CTRL_MASK)); about.add(aboutme); aboutme.setAccelerator(KeyStroke.getKeyStroke(KeyEvent.VK_F4,ActionEvent.ALT_MASK)); this.setJMenuBar(Bare); //-----menu action -------- exitmenuitem.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent exi){System.exit(0);}}); jianjie.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent jiaj){JOptionPane.showMessageDialog(null,"这是一个关于布局和监听器的例子本例子的操作都对表user执行请先建立数据库txb.mdb");}}); aboutme.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent jiaj){JOptionPane.showMessageDialog(null,"姓名:范圣帅 Email：[e-mail] 网址：http://www.shengshuai.260.cn http://www.myjavaserver.com/~shengshuai");}}); creattablemenuitem.addActionListener(new ActionListener(){ public void actionPerformed(ActionEvent creatt){creattablemenuitemframe creattablemenuitem1 = new creattablemenuitemframe(); creattablemenuitem1.show();creattablemenuitem1.hide();}}); //----end----menu action -// Container contentpane = getContentPane(); contentpane.setLayout(new BorderLayout()); toolbar.add(jianjie); //toolbar.add(insertbutton); contentpane.add(toolbar,BorderLayout.NORTH); contentpane.add(inputpanel,BorderLayout.CENTER); inputpanel.setLayout(new GridLayout(3,2)); inputpanel.add(nemelabel); inputpanel.add(namefield); inputpanel.add(passlabel); inputpanel.add(passfield); inputpanel.add(zhuzhi); inputpanel.add(addr);addr.addActionListener(this); contentpane.add(buttonpanel,BorderLayout.SOUTH); buttonpanel.add(insertbutton);insertbutton.addActionListener(this); buttonpanel.add(exitbutton);exitbutton.addActionListener(this); //-------------button action------------- } public void actionPerformed(ActionEvent ae) { Object source = ae.getSource(); JFrame resultframe = new JFrame(); JScrollPane jScrollPane1 = new JScrollPane(); JTable jTable1 = new JTable(); // --------查询数据-------------------------------------- if (source==select) { access ctm = new access(); ResultSet rs = ctm.executeQuery("SELECT * From user"); try{ getContentPane().add(jScrollPane1); Vector vcol = new Vector(); //列名 Vector vrow = new Vector(); //内容 vcol.addElement("名字"); vcol.addElement("密码"); vcol.addElement("住址"); while (rs.next()) { Vector vr1 = new Vector(); vr1.addElement(rs.getString("username")); vr1.addElement(rs.getString("userpass")); vr1.addElement(rs.getString("address")); vrow.addElement(vr1); } DefaultTableModel dtm = new DefaultTableModel(vrow, vcol); jTable1 = new JTable(vrow, vcol); jTable1.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); //滚动条设置左右滚 jScrollPane1.getViewport().add(jTable1, null); //在滚动条中放入表 resultframe.getContentPane().add(jScrollPane1); resultframe.setSize(400,400); resultframe.setLocation(200,20); resultframe.show(); }catch(SQLException sqa){System.out.print(sqa);} //--------删除数据---------- }else if(source == del) { access ctm = new access(); ctm.executeUpdate("DELETE * FROM USER"); //---------删除表----------- }else if(source == deltable) { String tablename = JOptionPane.showInputDialog("请输入要删除的表名","user"); access ctm = new access(); ctm.executeUpdate("DROP TABLE "+tablename); //-------插入数据------------ }else if (source==insertbutton) { access ctm = new access(); String name = namefield.getText().trim(); String pass = passfield.getText().trim(); String address = addr.getText().trim(); //System.out.print(name+pass); ctm.executeUpdate("INSERT INTO user (username,userpass,address) VALUES ('"+name+"','"+pass+"','"+address+"')"); }else if(source == exitbutton) { System.exit(0); } } } class creattablemenuitemframe extends JFrame { public creattablemenuitemframe() { String tablename = JOptionPane.showInputDialog("请输入表名","user"); access ctm = new access(); ctm.executeUpdate("CREATE TABLE "+tablename+"(username string ,userpass string,address string )"); hide(); } } class access { String dbDriver = "sun.jdbc.odbc.JdbcOdbcDriver"; String strCon = "jdbc:odbc:driver={Microsoft Access Driver (*.mdb)};DBQ="; Connection con = null; ResultSet rs = null; Statement stmt = null; public access() { try { Class.forName(dbDriver); } catch(java.lang.ClassNotFoundException e) { System.err.println("数据库驱动程序加载失败，异常为：" + e.getMessage()); } finally { System.out.println("驱动程序加载成功"); } } public ResultSet executeQuery(String strSQL) { rs = null; try { con = DriverManager.getConnection(strCon+"txb.mdb"); Statement stmt = con.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,ResultSet.CONCUR_READ_ONLY); rs = stmt.executeQuery(strSQL); } catch(SQLException ex) { JOptionPane.showMessageDialog(null,"executeQuery在执行"+strSQL+"失败了，异常为： " +ex.getMessage()); } finally { System.out.println("executeQuery--数据库连接成功"); } return rs; } public void executeUpdate(String strSQL) { try { con = DriverManager.getConnection(strCon+"txb.mdb"); stmt = con.createStatement(); stmt.executeUpdate(strSQL); } catch(SQLException ex) { JOptionPane.showMessageDialog(null,"executeUpdate在执行"+strSQL+"失败了，异常为： " +ex.getMessage()); } } }