clientframe.java

这是我课程设计的时候做的聊天程序

/*
 * Created on 2005-12-19
 *
 * TODO To change the template for this generated file go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
package chatClient;
import java.awt.*;
import java.awt.event.*;
//import java.io.Serializable;
import javax.swing.*;
import javax.swing.event.*;
import javax.swing.border.*;


import java.io.*;
import java.net.*;
/**
 * @author hongyuan
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 */
public class ClientFrame extends JFrame{
	private JComboBox comboBox;
	private JTextArea textArea;
	private JTextField textField;
	private JCheckBox checkBox;
	private JComboBox actionlist;
	private JButton login;
	private JButton logout;
	private Border border;//用于设定按钮边框
	private JTextField seperater;//用于显示提示信息
	Socket socket;//用于连接服务器的套接字
	ObjectOutputStream output;//用于发送信息
	ObjectInputStream input;//用于接收信息
	ClientReceiveThread recvThread;//接收线程类的实例
	
	//客户端主框架类的构造函数
	public ClientFrame()
	{
		super("聊天客户端");//设置标题栏
		init();			
		setSize(370,570);
		setVisible(true);
	}
	public void init()
	{
		Border bevelBorder=BorderFactory.createBevelBorder(BevelBorder.RAISED,Color.white,Color.white,Color.white,Color.white);
		Border emptyBorder=BorderFactory.createEmptyBorder(1,1,1,1);
		//定义按钮边框
		border=BorderFactory.createCompoundBorder(bevelBorder,emptyBorder);
		login=new JButton("登录");
		logout=new JButton("注销");
		//logout.setEnabled(false);//下线按钮为“禁止”状态
		login.addActionListener(//为登录按钮注册事件处理程序
				new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						LogIn();//用户登录
											
					}
				}
		);
		logout.addActionListener(//为注销按钮注册事件处理程序
				new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						LogOut();//用户下线
					}
				}
		);
		//创建用户列表组合框
		comboBox=new JComboBox();//创建用户列表组合框
		comboBox.addItem("all");
		comboBox.setSelectedIndex(0);//设置默认选中列表框中的all项
		textArea=new JTextArea(20,20);
		textArea.setEditable(false);//在线用户组合框为只读
		textField=new JTextField("请输入您的昵称！",20);
		seperater=new JTextField("",20);
		seperater.setEditable(false);
		checkBox=new JCheckBox("悄悄话");
		checkBox.setSelected(false);
		actionlist=new JComboBox();
		actionlist.addItem("微笑着");
		actionlist.addItem("生气地");
		actionlist.addItem("小心地");
		actionlist.setSelectedIndex(0);
		login.setBorder(border);
		login.setBounds(30,30,90,30);
		logout.setBorder(border);
		logout.setBounds(150,30,90,30);
		seperater.setBounds(30,75,300,20);
		textArea.setBounds(30,110,300,300);
		comboBox.setBounds(30,425,90,30);
		actionlist.setBounds(150,425,90,30);
		checkBox.setBounds(270,425,90,30);
		textField.setBounds(30,470,300,20);
		
		Container c=getContentPane();//得到画布
		c.setLayout(null);
		c.add(login,null);
		c.add(logout,null);
		c.add(seperater,null);
		c.add(textArea,null);
		c.add(comboBox,null);
		c.add(actionlist,null);
		c.add(checkBox,null);
		c.add(textField,null);  
		
		textField.addActionListener(//为系统消息框注册监听程序
				new ActionListener()
				{
					public void actionPerformed(ActionEvent e)
					{
						SendMessage();//发送聊天消息
					}
				}
		);
		this.addWindowListener(
				new WindowAdapter()
				{
					public void windowClosing(WindowEvent e)
					{
						LogOut();//用户下线
						System.exit(0);	
					}									
				}
		);
		 		
	}

	public void LogIn()
	{
		try
		{
			socket=new Socket("localhost",8000);//创建套接字并直接连接服务器
			output=new ObjectOutputStream(socket.getOutputStream());
			output.flush();//发送数据源头
			input=new ObjectInputStream(socket.getInputStream());			
			//准备用户昵称
			output.writeObject(textField.getText());
			output.flush();
			//创建接收线程
			recvThread=new ClientReceiveThread(socket,output,input,comboBox,textArea);
			recvThread.start();
			login.setEnabled(false);
			logout.setEnabled(true);
			textField.setText("请输入聊天信息！");			
		}catch(Exception e){
			e.printStackTrace();
		}
	}
	public void LogOut()
	{
		login.setEnabled(true);
		logout.setEnabled(false);
		textField.setText("请输入您的昵称！");
		if(socket.isClosed())  //判断套接字是否已经关闭
		{
			return;
		}
		try
		{
			output.writeObject("用户下线");
			output.flush();
			input.close();
			output.close();
			socket.close();
		}catch(Exception e){}
	}
	public void SendMessage()
	{
		String toSomebody=comboBox.getSelectedItem().toString();//得到信息发送对象
		String status="";
		//得到信息发送状态
		if(checkBox.isSelected())
		{
			status="悄悄话";
		}
		String action=actionlist.getSelectedItem().toString();//得到发送动作
		String message=textField.getText();//得到信息内容
		if(socket.isClosed())
		{
			return;
		}
		try
		{
			output.writeObject("聊天信息");
			output.flush();
			output.writeObject(toSomebody);//发送聊天对象
			output.flush();
			output.writeObject(status);//发送聊天状态
			output.flush();
			output.writeObject(action);//发送聊天表情
			output.flush();
			output.writeObject(message);//发送聊天信息内容
			output.flush();
		}catch(Exception e){}
	}
	public static void main(String [] args)
	{
		new ClientFrame();
	}
}