java聊天程序界面_java聊天室界面实现

刺骨的言语ヽ痛彻心扉 2022-11-05 13:56 243阅读 0赞

package chat;

import java.awt.\*;

import java.awt.event.\*;

import java.io.IOException;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.border.TitledBorder;

public class Face

extends Frame \{

private static final long serialVersionUID =

1L;

Button

clientBtn, serverBtn,sendMessage,closeConnection;

JLabel

serverIP,serverPort;

JPanel

southPanel,northPanel,westPanel,eastPanel,centerPanel;

TextArea

ta,tftype;

TextField

tfaddress, tfport;

int port;

int screenWidth,screenHeight,frameWidth,frameHeight;

Client

client;

Server

server;

boolean iamserver;

static Face

frm;

String

userName;

add

message

public void addMessage(String

msg)\{

this.ta.append(msg);

\}//end

method addMessage

return

server object

public Server

getServer()\{

return this.server;

constructor

public Face()

this.southPanel=new JPanel(new BorderLayout());

this.northPanel=new JPanel(new GridLayout(1,7));

this.westPanel=new JPanel(new BorderLayout());

this.eastPanel=new JPanel(new BorderLayout());

this.centerPanel=new JPanel(new BorderLayout());

clientBtn =

new Button("客户端");

serverBtn =

new Button("服务器");

this.closeConnection=new Button("断开连接");

this.closeConnection.setEnabled(false);

this.serverIP=new JLabel("服务器IP",JLabel.CENTER);

this.serverPort=new JLabel("端口",JLabel.CENTER);

ta =

new TextArea("", 10, 50,

TextArea.SCROLLBARS\_BOTH);

tfaddress =

new TextField("127.0.0.1", 20);

tfport =

new TextField("2000");

tftype =

new TextArea("", 1, 70,

TextArea.SCROLLBARS\_BOTH);

this.sendMessage=new Button("发送");

this.userName="";

add

key listener

tftype.addKeyListener(new TFListener());

ta.setEditable(false);

this.setLayout(new BorderLayout());

center

panel

this.centerPanel.add(this.ta,BorderLayout.CENTER);

this.centerPanel.setBorder(new TitledBorder("消息显示区"));

this.add(this.centerPanel,BorderLayout.CENTER);

northPanel

this.northPanel.add(this.serverIP);

this.northPanel.add(this.tfaddress);

this.northPanel.add(this.serverPort);

this.northPanel.add(this.tfport);

this.northPanel.add(this.clientBtn);

this.northPanel.add(this.serverBtn);

this.northPanel.add(this.closeConnection);

this.add(this.northPanel,BorderLayout.NORTH);

south

panel

this.southPanel.add(this.tftype,BorderLayout.WEST);

this.southPanel.add(this.sendMessage,BorderLayout.EAST);

this.southPanel.setBorder(new TitledBorder("输入区"));

this.add(this.southPanel,BorderLayout.SOUTH);

this.frameWidth=600;

this.frameHeight=600;

setSize(this.frameWidth,this.frameHeight);

setTitle("我的聊天室");

get

screen size and set the location in the center of the screen

this.screenWidth=(int)Toolkit.getDefaultToolkit().getScreenSize().getWidth();

this.screenHeight=(int)Toolkit.getDefaultToolkit().getScreenSize().getHeight();

this.setLocation((this.screenWidth-this.frameWidth)/2,

(this.screenHeight-this.frameHeight)/2);

this.setVisible(true);

add

listener for senon

this.sendMessage.addActionListener(new ActionListener()\{

@Override

public void actionPerformed(ActionEvent

e) \{

TODO Auto-generated method stub

ta.append(userName+":

" + tftype.getText() + "\\n");

if (iamserver)

server.dataout(tftype.getText());

else

client.dataout(tftype.getText());

clear

the input area

tftype.setText("");

\}//end

actionPerformed function

\});//end

actionListener

add

action listener for client button

clientBtn.addActionListener(new ActionListener()

public void actionPerformed(ActionEvent

e) \{

get

the port

port =

Integer.parseInt(tfport.getText());

create

new client

client =

new Client(tfaddress.getText(), port,

frm);

get

user name

while(true)\{

userName=JOptionPane.showInputDialog(null,

"请输入用户名", "登录", JOptionPane.QUESTION\_MESSAGE);

if(userName==null)

JOptionPane.showMessageDialog(null,

"用户名不能为空", "ERROR", JOptionPane.ERROR\_MESSAGE);

if(userName.equals("Server")==true)\{

JOptionPane.showMessageDialog(null,

"用户名不能为Server", "ERROR", JOptionPane.ERROR\_MESSAGE);

userName=null;

if(userName!=null)

break;

\}//end

while loop

client.setUserName(userName);

start

the client process

client.start();

setTitle(userName+"的聊天室");

become

a client

iamserver=false;

tfaddress.setText("成为客户端");

enable

corresponding buttons

tfaddress.setEnabled(false);

tfport.setEnabled(false);

serverBtn.setEnabled(false);

clientBtn.setEnabled(false);

closeConnection.setEnabled(true);

\});//end

client button action listener

add

action listener for server button

serverBtn.addActionListener(new ActionListener()

public void actionPerformed(ActionEvent

e) \{

get

the port

port =

Integer.parseInt(tfport.getText());

create

new server

server =

new Server(port, frm);

start

the server process

server.start();

userName="Server";

become

a server

iamserver =

true;

tfaddress.setText("成为服务器");

setTitle(userName+"的聊天室");

enable

corresponding buttons

tfaddress.setEnabled(false);

tfport.setEnabled(false);

serverBtn.setEnabled(false);

clientBtn.setEnabled(false);

closeConnection.setEnabled(true);

\});//end

server button listener

add

action listener to close connection

this.closeConnection.addActionListener(new ActionListener()\{

@Override

public void actionPerformed(ActionEvent

e) \{

TODO Auto-generated method stub

try \{

closeConnection();

catch (IOException e1) \{

TODO Auto-generated catch block

e1.printStackTrace();

clientBtn.setEnabled(true);

serverBtn.setEnabled(true);

closeConnection.setEnabled(false);

ta.setText("");

tftype.setText("");

tfaddress.setText("127.0.0.1");

tfaddress.setEnabled(true);

tfaddress.setEditable(true);

tfport.setText("2000");

tfport.setEnabled(true);

tfport.setEditable(true);

\}//end

method action performed

\});//end

action listener

add

window listener for frame

this.addWindowListener(new WindowAdapter()

public void windowClosing(WindowEvent

e) \{

exit

normally

try \{

closeConnection();

catch (IOException e1) \{

TODO Auto-generated catch block

e1.printStackTrace();

System.exit(0);

\});//end

window listener

\}//end

constructor function

public static void main(String

args\[\]) \{

frm =

new Face();

current established connections

@SuppressWarnings("deprecation")

public void closeConnection()

throws IOException\{

if(this.iamserver==false &&

this.client!=null &&

this.client.getSocket()!=null)\{

this.client.dataout("Connection

closed from

"+this.client.getSocket().getInetAddress().getHostName()+"......");

this.client.getSocket().close();

this.client.getOutputStream().close();

this.client.getInputStream().close();

this.client.stop();

else if(this.iamserver==true &&

this.server!=null &&

this.server.getServerSocket()!=null)\{

all connections for clients

for(int i=0;i<**this.server.getClients().size();i++)\{**

this.server.getClients().get(i).getSocket().close();

this.server.getClients().get(i).getOutputStream().close();

this.server.getClients().get(i).getInputStream().close();

this.server.getClients().get(i).stop();

server connection

this.server.getServerSocket().close();

this.server.stop();

\}//end

method closeConnection

inherited listener

private class TFListener

implements KeyListener \{

when

user press a key

public void keyPressed(KeyEvent

e) \{

when

press "Enter", send the text to area

if (e.getKeyCode()

== KeyEvent.VK\_ENTER) \{

if(clientBtn.isEnabled()==true ||

serverBtn.isEnabled()==true)\{

JOptionPane.showMessageDialog(null,

"请先选择成为客户端或者服务器！", "ERROR",

JOptionPane.ERROR\_MESSAGE);

return;

ta.append(userName+":

" + tftype.getText() + "\\n");

if (iamserver)

server.dataout(tftype.getText());

else

client.dataout(tftype.getText());

clear

the input area

tftype.setText("");

\}//end

method keyPressed

when

the user type a key

public void keyTyped(KeyEvent

e) \{

when

user release a key

public void keyReleased(KeyEvent

e) \{

if(e.getKeyCode()

== KeyEvent.VK\_ENTER)\{

tftype.setText("");

\}//end

function keyReleased

\}//end

class TFLister

\}//end

class Face

![a4c26d1e5885305701be709a3d33442f.png][]

[a4c26d1e5885305701be709a3d33442f.png]: /images/20221023/ecd7b5631cec4f0995caaa7dbc58be4e.png

java聊天程序界面_java聊天室界面实现

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