clientlogin.java

抢答器

//package qiangdaqi;
import java.awt.*;
import java.awt.event.*;

import javax.swing.*;

import java.io.*;
import java.net.*;

class ClientLogin extends JFrame implements ActionListener,KeyListener
{
	JPanel a;
	JButton b;
	
	JPanel p1;
	JPanel p2;
	JPanel p3;
	JPanel p4;
	
	JLabel name,num,server;
	JTextField n,nb,s;
	Socket s1;
	OutputStream out1;
	InputStream input;
	JSpinner b2;
	
	public ClientLogin()
	{
		this.setTitle("客户端登陆器");
		this.setSize(400,120);
		this.setLocation(420,400);
		
		a=new JPanel();
		this.add(a);
		
		a.setBackground(new Color(85,141,142));
		name=new JLabel("姓名");
		num=new JLabel("序号");
		server=new JLabel("服务器IP");
		n=new JTextField(10);		
		nb=new JTextField(5);
		s=new JTextField("",13);
		b=new JButton("连接服务器");
		//b.setBounds(350, 10, 20, 20);
		b.setBackground(new Color(123,175,176));
		b.setForeground(Color.red);
		b2=new JSpinner();
		
		p1=new JPanel();
		p2=new JPanel();
		p3=new JPanel();
		p4=new JPanel();
		
		//p2.setLayout(null);
		
		a.add(p1);
		a.add(p2);
		
		p1.setBackground(new Color(85,141,142));
		p2.setBackground(new Color(85,141,142));
		p1.setLayout(new GridLayout(2,1));
		p1.add(p3);
		p1.add(p4);
		p3.setLayout(new FlowLayout());
		p4.setLayout(new FlowLayout());
		p3.setBackground(new Color(85,141,142));
		p4.setBackground(new Color(85,141,142));
		
		p3.add(name);
		p3.add(n);
		p3.add(num);
		p4.add(server);
		p4.add(s);
		p3.add(b2);
		p2.add(b);		
		
		b.addActionListener(this);
		//n.addKeyListener(this);
		//nb.addKeyListener(this);
		s.addKeyListener(this);
		
		this.setVisible(true);
		this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
		
	}
	public void actionPerformed(ActionEvent e)
	{
		action();
		
	}
	
	public void keyPressed(KeyEvent e)
	{
		Object obj=e.getSource();
		if(e.getKeyCode()==KeyEvent.VK_ENTER )
		{
			action();
		}
	}
	public void keyReleased(KeyEvent e)
	{
	
	}
	public void keyTyped(KeyEvent e) 
	{
		
	}
	private void action()
	{
		try
		{
			if((n.getText().equals(""))|| (b2.getValue().toString().equals(""))||(s.getText().equals("")))
			{
				error ee1=new error("输入框不能为空");
			}
			else
			{
				s1=new Socket(s.getText(),9999);
				out1=s1.getOutputStream();
				out1.write((b2.getValue()+":"+n.getText()).getBytes());
				//System.out.println(b2.getValue()+":"+n.getText());
				input=s1.getInputStream();
				byte[] by= new byte [1024];
				int len=input.read(by);
				String mm=new String(by,0,len);
				System.out.println(mm);
				if(mm.equals("0"))
				{
					error ee1=new error("此序号已经存在");
				}
				else
				{
					System.out.println(mm);
					ClientMain cm=new ClientMain(n.getText(),b2.getValue().toString(),s1);
					cm.setVisible(true);
					this.setVisible(false);
				}
			}
		}		
		catch(IOException e1)
		{			
			e1.printStackTrace();
			error ee1=new error("出现异常");
		}
		catch(SecurityException e2)
		{
			e2.printStackTrace();
			error ee2=new error("出现异常");
		}
	}
	public static void main(String[] args)
	{
		new ClientLogin();
	}
}