GUI连接oracle，用户管理系统

package com.neusoft.ums; import java.awt.BorderLayout; import java.awt.Toolkit; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.io.BufferedReader; import java.io.BufferedWriter; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.InputStreamReader; import java.io.Writer; import javax.swing.ImageIcon; import javax.swing.JButton; import javax.swing.JCheckBox; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.JOptionPane; import javax.swing.JPanel; import javax.swing.JPasswordField; import javax.swing.JTextField; public class login extends JFrame implements ActionListener{ JButton jb1,jb2; JPanel jp1,jp2,jp3,jp4,jp5,jp6; JLabel jl1,jl2,jl3; JTextField jtf; JPasswordField jpf; JCheckBox jcb1,jcb2; private int LCD_width = Toolkit.getDefaultToolkit().getScreenSize().width; private int LCD_height = Toolkit.getDefaultToolkit().getScreenSize().height; private String oldName = null; private String oldPassword = null; private String autoLogin = ""; private int passwordinputtime = 0; public login(){ jl1 = new JLabel(new ImageIcon("image/loginhead.png")); jp1 = new JPanel(); jp2 = new JPanel(); jp3 = new JPanel(); jp4 = new JPanel(); jp5 = new JPanel(); jp6 = new JPanel(); jl2 = new JLabel("用户名 "); jl3 = new JLabel("密 码 "); jtf = new JTextField(10); jpf = new JPasswordField(10); jb1 = new JButton("登陆"); jb1.addActionListener(this); jb2 = new JButton("注册"); jb2.addActionListener(this); jcb1 = new JCheckBox("记住密码"); jcb2 = new JCheckBox("自动登陆"); jcb2.addActionListener(this); jp1.add(jl2); jp1.add(jtf); jp2.add(jl3); jp2.add(jpf); jp3.add(jcb1); jp3.add(jcb2); jp4.add(jp1); jp4.add(jp2); jp4.add(jp3); jp5.add(jb1); jp5.add(jb2); this.add(jl1,BorderLayout.NORTH); this.add(jp4,BorderLayout.CENTER); this.add(jp5,BorderLayout.SOUTH); //设置窗体的标题、位置、大小、可见性及关闭符号 this.setTitle("用户登陆"); //设置窗口位置在屏幕中央 this.setLocation(LCD_width/2-135,LCD_height/2-120); //设置窗口大小 this.setSize(270,240); this.setVisible(true); //用户不可调整面板大小 this.setResizable(false); this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //读取本地保存的登陆信息 loadMsg(); //自动登陆 autoLogin(); } public static void main(String[] args){ login l = new login(); } public void actionPerformed(ActionEvent e) { // TODO Auto-generated method stub if(e.getSource()==jb1){ checkLogin(); } if(jcb2.isSelected()){ jcb1.setSelected(true);//选择自动登陆，就必须保存密码 } if(e.getSource()==jb2){ new userReg(null,"建立用户",true,10); } } //自动登陆 private void autoLogin(){ if(autoLogin.equals("auto")){ checkLogin(); } } //读取本地保存的登陆信息 private void loadMsg(){ try { FileInputStream fis = new FileInputStream("config.dat"); InputStreamReader isr = new InputStreamReader(fis); BufferedReader br = new BufferedReader(isr); oldName = br.readLine(); oldPassword = br.readLine(); autoLogin = br.readLine(); jtf.setText(oldName); jpf.setText(oldPassword); if(autoLogin==null)autoLogin=""; br.close(); } catch (Exception e) { e.printStackTrace(); } } //保存正确的登陆信息到本地文件 private void saveMsg(){ try { FileOutputStream fos = new FileOutputStream("config.dat"); fos.write((jtf.getText()+"\r\n").getBytes()); fos.write((jpf.getText()+"\r\n").getBytes()); fos.write(autoLogin.getBytes()); fos.close(); } catch (Exception e) { e.printStackTrace(); } } //清空本地文件中保存的登陆信息 private void clearMsg(){ try { FileOutputStream fos = new FileOutputStream("config.dat"); fos.write("\r\n".getBytes()); fos.write("\r\n".getBytes()); fos.write(autoLogin.getBytes()); fos.close(); } catch (Exception e) { e.printStackTrace(); } } //验证登陆 private void checkLogin(){ boolean isLogin; int myRight; loginModel lm = new loginModel(); isLogin = lm.checkLogin(jtf.getText(),jpf.getText()); if(isLogin)//验证成功 { boolean isSelect_jcb1 = false; boolean isSelect_jcb2 = false; isSelect_jcb1 = jcb1.isSelected();//获取选项状态 isSelect_jcb2 = jcb2.isSelected(); if(isSelect_jcb2){ autoLogin = "auto"; }else { autoLogin = ""; } if(isSelect_jcb1){ saveMsg(); }else { clearMsg(); } myRight = lm.getRight(); // System.out.println("Login OK"+" right"+myRight); new userWindow(jtf.getText(),myRight); this.dispose(); }else { if(passwordinputtime>=2) { JOptionPane.showMessageDialog(this,"密码输入错误3次，程序即将退出。","警告",JOptionPane.WARNING_MESSAGE); clearMsg(); System.exit(0); } JOptionPane.showMessageDialog(this,"密码错误！请重新输入...","警告",JOptionPane.WARNING_MESSAGE); jtf.setText(""); jpf.setText(""); passwordinputtime++; } } }