logondialog.java

一个基于局域网的c/s模式网上购物系统,功能比较全面.数据库为Access.

import javax.swing.*;
import javax.swing.border.*;
import java.awt.*;
import java.awt.event.*;
import java.util.*;
import java.net.*;
import java.io.*;


//登录界面
class LogonDialog implements ActionListener
{
	private final JFrame f;
    private JTextField t1;
    private JPasswordField t2; 
    
    private Socket socket;
    private BufferedReader in;
    private PrintWriter out;
  
  //登录方式选择对话框类
	class ChooseDialog
	{
		JDialog dialog;
	
		ChooseDialog(final JFrame f,final int ID,final String name,final String psw,final String sname,final String stype,final String sinfo,final int aid)
					
		{
			dialog = new JDialog(f,"登录选择!",true);
			
			JPanel p = new JPanel();
			p.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.BLACK,3),
	  	                "请选择已何种身份登录",TitledBorder.CENTER,TitledBorder.TOP));

			JButton b = new JButton("顾客");
			b.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e)
				{
					dialog.dispose();
					f.dispose();
					JOptionPane.showMessageDialog(null,name+":  欢迎您使用网络购物系统!\n\n                  ---Copyright By TERRY\n                  ---version1.0","登录成功",1);
       				
   					Customer c = new Customer(ID,name,psw,aid,true);
					Mall mall = new Mall(c,socket);
				}
			});
			
			p.add(b);
		
			b = new JButton("店主");
			b.addActionListener(new ActionListener(){
				public void actionPerformed(ActionEvent e)
				{
					dialog.dispose();
					f.dispose();
					JOptionPane.showMessageDialog(null,name+":  欢迎您使用网络购物系统!\n\n                  ---Copyright By TERRY\n                  ---version1.0","登录成功",1);
       				
   					Merchant m = new Merchant(ID,name,psw,sname,stype,sinfo,aid);
					ShopManager manager = new ShopManager(m,socket);
				}
			});
		
			p.add(b);

			dialog.add(p,BorderLayout.CENTER);
			dialog.setBounds(415,310,200,120);
    	    dialog.setVisible(true);
		}
	}
  
  //构造函数
  public LogonDialog(Socket socket)
  {
  	this.socket = socket;
  	f = new JFrame("Logon");
  	
  	try
    	{
    		in = 
		     new BufferedReader(
	          new InputStreamReader(
	           socket.getInputStream()));
	           
    	   	out =
	    	 new PrintWriter(
    		  new BufferedWriter(
     		   new OutputStreamWriter(
       			socket.getOutputStream())),true);
       	}catch(Exception e)
       	{
      
       	}
  	  	
  	
	Container contentPane=f.getContentPane();
  	 
	JPanel textPanel = new JPanel();
	textPanel.setLayout(new GridBagLayout());
    GridBagConstraints gbc = new GridBagConstraints();
    gbc.anchor = GridBagConstraints.WEST; //设定Layout的位置
    gbc.insets = new Insets(2,2,2,2); //设定与边界的距离(上,左,下,右)
    	
    textPanel.setBorder(BorderFactory.createTitledBorder(BorderFactory.createLineBorder(Color.LIGHT_GRAY,2),
	  	                "请登录，新用户请注册",TitledBorder.CENTER,TitledBorder.TOP));
	JLabel l1 = new JLabel("用户名：");        
    JLabel l2 = new JLabel("密码：");        
	   
    t1 = new JTextField(12);
	t2 = new JPasswordField(12);
	t2.setEchoChar('*');

    gbc.gridy=1;
    gbc.gridx=0;
    textPanel.add(l1,gbc);
    gbc.gridx=1;
    textPanel.add(t1,gbc);
    gbc.gridy=2;
    gbc.gridx=0;
    textPanel.add(l2,gbc);
    gbc.gridx=1;
    textPanel.add(t2,gbc);

	JPanel buttonPanel=new JPanel();
	JButton b=new JButton("注册");
	b.addActionListener(this);
 	buttonPanel.add(b);
	b=new JButton("登录");
	b.addActionListener(this);
	buttonPanel.add(b);
  	
  	JLabel pic = new JLabel(new ImageIcon(".\\logon.jpg"));
  	 
  	contentPane.add(pic,BorderLayout.NORTH);
	contentPane.add(textPanel,BorderLayout.CENTER);
    contentPane.add(buttonPanel,BorderLayout.SOUTH);
    f.pack();
    f.setBounds(377,100,270,450);
    f.setResizable(false);
    f.setVisible(true);
    f.addWindowListener(new WindowAdapter(){
   	   public  void windowClosing(WindowEvent e){
 		try
 		{
 			out.println("END");
 			in.close();
 			out.close();
 		//	socket.close();
 		}catch(IOException ex){}  	   	
   	   	 System.exit(0);
   	   }
     });  	            
  }
  
  //事件处理
  public void actionPerformed(ActionEvent e)
  {
  	 String cmd=e.getActionCommand();
  	 if (cmd.equals("注册"))
  	 {
  	 	 new LoginSystem(f,socket);
  	 }
  	 else if (cmd.equals("登录"))
  	 {
  	 	try
  	 	{
  	 		out.println("LOGON");
     		out.println(t1.getText());
     		out.println(new String(t2.getPassword()));
  	     	
     		String result = in.readLine();
       		if(result.equals("SUCCESS"))
       		{
       			int ID = Integer.parseInt(in.readLine());
       			int AID  = Integer.parseInt(in.readLine());
       			
       			f.dispose();
       			JOptionPane.showMessageDialog(null,t1.getText()+":  欢迎您使用网络购物系统!\n\n                  ---Copyright By TERRY\n                  ---version1.0","登录成功",1);
       				
      			Customer c = new Customer(ID,t1.getText(),new String(t2.getPassword()),AID,false);
       			Mall mall = new Mall(c,socket);
       		}
       		
       		else if(result.equals("ALREADY"))
       		{
       			JOptionPane.showMessageDialog(null,"         该用户已经登录!","登录错误",2);
       		}
        	   			
       		else if(result.equals("FAILURE"))
       		{
       			JOptionPane.showMessageDialog(null,"               密码错误!","登录错误",2);
       		}
       		
       		else if(result.equals("NOTEXIST"))
       		{
       			JOptionPane.showMessageDialog(null,"           该用户不存在!","登录错误",2);
       		}
       		
       		else if(result.equals("CHOOSE"))
       		{
       			final int ID = Integer.parseInt(in.readLine());
       			final int AID = Integer.parseInt(in.readLine());
       			final String userName = t1.getText();
       			final String password = new String(t2.getPassword());
       			final String shopName = in.readLine();
       			final String shopType = in.readLine();
       			final String shopInfo = in.readLine();
       			
       			new ChooseDialog(f,ID,userName,password,shopName,shopType,shopInfo,AID);
       		}
       	}
       	catch(IOException ex){}
     }
  }
}