register.java

里面所含源码是本人平时做程序的一些实例

import java.awt.*;
import javax.swing.*;
import java.awt.event.*;
import java.io.*;
import java.sql.*;
import javax.swing.filechooser.FileNameExtensionFilter;
public class Register extends JFrame implements ActionListener
{
		FileNameExtensionFilter filter;
		RandomAccessFile ras1,ras2;
		JPanel pnlRegister;
		JLabel lblUserName,lblPassword,lblConfirmPwd,lblSex,lblAge,lblEmail;
		JLabel lblLogo,lblSelect;
		JButton btnOk,btnReturn,btnClear;
		JTextField txtUserName,txtEmail;
		JPasswordField pwdPassword,pwdConfirmPassword;
		JRadioButton rbtnMale,rbtnFemale;
		ButtonGroup grpSex;
		JComboBox cmbAge;
		Dimension scrnSize;
		Toolkit tk=Toolkit.getDefaultToolkit();
		JOptionPane op1;
		Connection con;
		Conn c=new Conn();
		//构造方法
		public Register()
		{
			//组件初始化
			pnlRegister=new JPanel(null);
			setContentPane(pnlRegister);
			lblUserName=new JLabel("用 户 名:");
			lblPassword=new JLabel("密       码:");
			lblConfirmPwd=new JLabel("确认密码:");
			lblSex=new JLabel("性       别:");
			lblAge=new JLabel("年       龄:");
			lblEmail=new JLabel("电子邮件:");
			lblSelect=new JLabel("Male");
			txtUserName=new JTextField();
			pwdPassword=new JPasswordField();
			pwdConfirmPassword=new JPasswordField();
			grpSex=new ButtonGroup();
			Icon logoMale=new ImageIcon("e:/java/images/male.jpg");
			Icon logoFemale=new ImageIcon("e:/java/images/female.jpg");
			rbtnMale=new JRadioButton("男",logoMale);
			rbtnMale.setSelected(true);
			rbtnMale.addActionListener(this);
			grpSex.add(rbtnMale);
			rbtnFemale=new JRadioButton("女",logoFemale);
			rbtnFemale.addActionListener(this);
			grpSex.add(rbtnFemale);
			cmbAge=new JComboBox();
			for(int i=12;i<=80;i++)
				cmbAge.addItem(String.valueOf(i));
			txtEmail=new JTextField(20);
			btnOk=new JButton("确定(O)");
			btnOk.setMnemonic('O');
			btnOk.setToolTipText("保存注册信息");
			btnOk.addActionListener(this);
			btnReturn=new JButton("返回(R)");
			btnReturn.setMnemonic('R');
			btnReturn.setToolTipText("返回登录窗口");
			btnReturn.addActionListener(this);
			btnClear=new JButton("清空(C)");
			btnClear.setMnemonic('C');
			btnClear.setToolTipText("清空所有信息");
			btnClear.addActionListener(this);
			//设置组件位置
			lblUserName.setBounds(30,90,100,30);
			txtUserName.setBounds(110,90,120,25);
			lblPassword.setBounds(30,120,100,30);
			pwdPassword.setBounds(110,120,120,25);
			lblConfirmPwd.setBounds(30,150,100,30);
			pwdConfirmPassword.setBounds(110,150,120,25);
			lblSex.setBounds(30,180,100,30);
			rbtnMale.setBounds(110,180,60,25);
			rbtnFemale.setBounds(170,180,60,25);
			lblAge.setBounds(30,210,100,25);
			cmbAge.setBounds(110,210,80,20);
			lblEmail.setBounds(30,240,100,30);
			txtEmail.setBounds(110,240,120,25);
			btnOk.setBounds(250,130,80,35);
			btnReturn.setBounds(250,180,80,35);
			btnClear.setBounds(250,230,80,35);
			//设置组件颜色
			pnlRegister.setBackground(Color.green);
			btnOk.setBackground(Color.orange);
			btnReturn.setBackground(Color.orange);
			btnClear.setBackground(Color.orange);
			rbtnMale.setOpaque(false);   
			rbtnFemale.setOpaque(false);
			rbtnMale.setForeground(Color.BLACK);
			rbtnFemale.setForeground(Color.BLACK);
			rbtnMale.setBackground(Color.white);
			rbtnFemale.setBackground(Color.white);
			//设置背景图片
			Icon backLogo=new ImageIcon("e:/java/images/registerlogo.jpg");
			lblLogo=new JLabel(backLogo);
			lblLogo.setBounds(0,0,360,78);
			pnlRegister.add(lblLogo);
			
			//添加组件
			pnlRegister.add(lblUserName);
			pnlRegister.add(txtUserName);
			pnlRegister.add(lblPassword);
			pnlRegister.add(pwdPassword);
			pnlRegister.add(lblConfirmPwd);
			pnlRegister.add(pwdConfirmPassword);
			pnlRegister.add(lblSex);
			pnlRegister.add(rbtnMale);
			pnlRegister.add(rbtnFemale);
			pnlRegister.add(lblAge);
			pnlRegister.add(cmbAge);
			pnlRegister.add(lblEmail);
			pnlRegister.add(txtEmail);
			pnlRegister.add(btnOk);
			pnlRegister.add(btnReturn);
			pnlRegister.add(btnClear);
			//设置登录窗口
			scrnSize=tk.getScreenSize();
			setLocation(scrnSize.width/2-this.getWidth()/2,scrnSize.height/2-this.getWidth()/2);
			setSize(360,300);
			setVisible(true);
			setResizable(false);
			setDefaultCloseOperation(EXIT_ON_CLOSE);
			Image logo=tk.getImage("e:/java/images/appico.jpg");
			setIconImage(logo);
		}
		//按钮监听响应
		public void actionPerformed(ActionEvent ae)
		{
			Object source=ae.getSource();
			
			//检查用户信息
			if(source==btnOk)
			{
				op1=new JOptionPane();
			if(txtUserName.getText().length()==0)
				{
					op1.showMessageDialog(null,"用户名不能为空!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					txtUserName.requestFocus();
					return;
					}
				if(txtUserName.getText().length()<4)
				{	
					op1.showMessageDialog(null,"用户名长度不能小于4位宽度!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					txtUserName.requestFocus();
					return;
				}
				char b[]={'0','1','2','3','4','5','6','7','8','9'};
				for(int i=0;i<10;i++)
					if(txtUserName.getText().charAt(0)==b[i])
					{
						op1.showMessageDialog(null,"用户名格式不正确,请重新输入!","提示信息",JOptionPane.INFORMATION_MESSAGE);
						txtUserName.requestFocus();
						return;
					}
				if(pwdPassword.getPassword().length==0)
				{
					op1.showMessageDialog(null,"密码不能为空!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					pwdPassword.requestFocus();
					return;
				}
				if(pwdPassword.getPassword().length<6)
				{
					op1.showMessageDialog(null,"密码长度不能小于6位!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					pwdPassword.requestFocus();
					return;
				}
				String p=new String(pwdPassword.getPassword());
				String cp=new String(pwdConfirmPassword.getPassword());
				if(!p.equals(cp))
				{
					op1.showMessageDialog(null,"密码与确认密码不一样!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					pwdConfirmPassword.requestFocus();
					return;
				}
				if(source.equals(rbtnMale))
					lblSelect.setText("男");
				if(source.equals(rbtnFemale));
					lblSelect.setText("女");
				
				if(txtEmail.getText().length()==0)
				{
					op1.showMessageDialog(null,"邮件地址不能为空!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					txtEmail.requestFocus();
					return;
				}	
				int flag=0;
				for(int i=0;i<txtEmail.getText().length();i++)
					if(txtEmail.getText().charAt(i)=='@')
						flag=1;
				if(flag!=1)
				{
					op1.showMessageDialog(null,"邮件格式不正确!","提示信息",JOptionPane.INFORMATION_MESSAGE);
					txtEmail.requestFocus();
					return;
				}
				
				userRegister();
			}
			//监听返回按钮
			if(source==btnReturn)
			{
				new Login();
				this.dispose();
			}
			//监听清空按钮
			if(source==btnClear)
			{
				txtUserName.setText("");
				pwdPassword.setText("");
				pwdConfirmPassword.setText("");
				rbtnMale.setSelected(true);
				txtEmail.setText("");
			}
		}
		//使用数据库进行校验
		public boolean userRegister()
		{
			try
			{
				con=c.openDatabase();
				String strAge=String.valueOf(cmbAge.getSelectedItem());
				String strSql=txtUserName.getText()+"','"+pwdPassword.getText()+"','"+lblSelect.getText()+"','"+strAge+"','"+txtEmail.getText();
				String sql="insert into users values('"+strSql+"')";
				Statement stmt=con.createStatement();
				
				stmt.executeUpdate(sql);
				JOptionPane.showMessageDialog(null,"注册成功!");
				return true;
			}catch(Exception e)
			{
				System.out.println(e.toString());
				JOptionPane.showMessageDialog(null,"注册失败!");
				return false;
			}
		}
		//使用user.txt文件进行校验
		/*
		public boolean userRegister()
		{
			String strUser=txtUserName.getText();
			boolean t=true;
			try{
				ras1=new RandomAccessFile("user.txt","r");
				long l=ras1.length();
				String strUserName;
				while((strUserName=ras1.readLine())!=null)
				{
				
					if(strUser.equals(strUserName))
					{
						JOptionPane.showMessageDialog(null,"用户名已经存在");
						t=false;
						break;
					}
				}
				ras1.close();	
				if(t)
				{
				
				ras2=new RandomAccessFile("user.txt","rw");
				ras2.seek(l);
				ras2.writeBytes(txtUserName.getText()+"\r\n");
				ras2.writeBytes(pwdPassword.getText()+"\r\n");
				ras2.writeBytes(String.valueOf(cmbAge.getSelectedItem()+"\r\n"));
				ras2.writeBytes(lblSelect.getText()+"\r\n");
				ras2.writeBytes(txtEmail.getText()+"\r\n");
				ras2.close();
				JOptionPane.showMessageDialog(null,"注册成功!");
				new Login();
				this.dispose();
				}
			}
			catch(Exception e){JOptionPane.showMessageDialog(null,"注册失败!");}
			return t;
		}*/
		public static void main(String args[])
		{
			new Register();
		}
		
		
}