有界面的TCP Socket通信程序
一个非常简单的有界面的TCP Socket的通信程序
程序由四个类组成：一个是服务器端；一个是客户端；另外两个是类，用来发送消息和接收消息的。
服务器端TcpServer.java
package TcpChat;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class TcpServer {
public static void main(String args[]){
//初始化界面
JFrame jf = new JFrame("服务器端");
JTextField field = new JTextField(30);
JTextArea area = new JTextArea();
Cursor cursor = new Cursor(Cursor.TEXT_CURSOR);
field.requestFocusInWindow();
area.setEditable(false);
area.setFont(new Font("宋体",0,14));
JButton clear = new JButton("清屏");
JButton button = new JButton("发送");
Panel panel = new Panel();
panel.add(field);
panel.add(button);
panel.add(clear);
jf.add(area,"Center");
jf.add(panel,"South");
Toolkit toolkit = jf.getToolkit();
Dimension d = toolkit.getScreenSize();
jf.setBounds(d.width/2-268,d.height/2-163,536,327);
jf.setResizable(false);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.validate();
try{
//在端口2008监听
ServerSocket ss = new ServerSocket(2008);
Socket s = ss.accept();
InputStream is = s.getInputStream();
OutputStream os = s.getOutputStream();
DataInputStream dis = new DataInputStream(is);
final DataOutputStream dos = new DataOutputStream(os);
SendMsg say = new SendMsg(dos,field,button,area,clear);
ReceiveMsg receiver = new ReceiveMsg(dis,area);
button.addActionListener(say);
clear.addActionListener(say);
field.addKeyListener(say);
jf.addFocusListener(say);
receiver.start();
}catch(IOException e){
e.printStackTrace();
}
}
}
客户端TcpClient.java
package TcpChat;
import java.awt.*;
import javax.swing.*;
import java.io.*;
import java.net.*;
public class TcpClient {
public static void main(String args[]){
//初始化界面
JFrame jf = new JFrame("客户端");
JTextField field = new JTextField(30);
field.requestFocusInWindow();
JTextArea area = new JTextArea();
area.setEditable(false);
area.setFont(new Font("宋体",0,14));
JButton button = new JButton("发送");
JButton clear = new JButton("清屏");
Panel panel = new Panel();
panel.add(field);
panel.add(button);
panel.add(clear);
jf.add(area,"Center");
jf.add(panel,"South");
Toolkit toolkit = jf.getToolkit();
Dimension d = toolkit.getScreenSize();
jf.setBounds(d.width/2-268,d.height/2-163,536,327);
jf.setResizable(false);
jf.setVisible(true);
jf.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jf.validate();
try{
//获取服务器IP和端口号
Socket s = new Socket("127.0.0.1",2008);
InputStream is = s.getInputStream();
OutputStream os = s.getOutputStream();
DataInputStream dis = new DataInputStream(is);
final DataOutputStream dos = new DataOutputStream(os);
SendMsg say = new SendMsg(dos,field,button,area,clear);
ReceiveMsg receiver = new ReceiveMsg(dis,area);
button.addActionListener(say);
clear.addActionListener(say);
field.addKeyListener(say);
jf.addFocusListener(say);
receiver.start();
}catch(IOException e){
e.printStackTrace();
}
}
}
以上两个基本相似，其差别就在于一个是监听（服务器端），一个是主动连接（客户端），见红色代码。
下面两个是公共类：
发送消息SendMsg.java
package TcpChat;
import java.awt.Cursor;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.FocusEvent;
import java.awt.event.FocusListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import javax.swing.JButton;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import java.io.DataOutputStream;
import java.io.IOException;
/**
* 发送
*
*/
public class SendMsg extends KeyAdapter implements ActionListener,FocusListener{
private JTextField field;
private JTextArea area;
private DataOutputStream dos;
private JButton button;
private JButton clear;
public SendMsg(DataOutputStream d,JTextField f,JButton b,JTextArea a,JButton c){
this.dos = d;
this.field = f;
this.button = b;
this.area = a;
this.clear = c;
}
@Override
public void keyTyped(KeyEvent e) {
if(e.getKeyChar()==(char)KeyEvent.VK_ENTER){
String s = field.getText();
try{
area.append("你说："+s+"\n");
dos.writeUTF(s+"\n");
if(s.equals("bye")){
dos.close();
area.setText("自己下线，程序退出！");
System.exit(0);
}
field.setText("");
}catch(IOException ee){
ee.printStackTrace();
}
}
}
public void actionPerformed(ActionEvent e){
if(e.getActionCommand().equals("发送")){
String s = field.getText();
try{
area.append("你说："+s+"\n");
dos.writeUTF(s+"\n");
if(s.equals("bye")){
dos.close();
area.setText("自己下线，程序退出！");
System.exit(0);
}
field.setText("");
}catch(IOException ee){
ee.printStackTrace();
}
}
if(e.getActionCommand().equals("清屏")){
area.setText("");
}
}
public void focusGained(FocusEvent e) {
Cursor cursor = new Cursor(Cursor.TEXT_CURSOR);
field.requestFocusInWindow();
}
public void focusLost(FocusEvent e) {}
}
接收消息ReceiveMsg.java
package TcpChat;
import java.io.DataInputStream;
import java.io.IOException;
import javax.swing.JTextArea;
/**
* 接收
*
*/
public class ReceiveMsg extends Thread{
private DataInputStream dis;
private JTextArea area;
public ReceiveMsg(DataInputStream d,JTextArea a){
this.dis = d;
this.area = a;
}
public void run(){
String s;
while(true){
try{
s = dis.readUTF();
area.append("对方说："+s);
if(s.equals("bye")){
dis.close();
area.setText("对方下线，程序退出!");
break;
}
}catch(IOException e){
e.printStackTrace();
}
}
}
}
该程序只具有简单的聊天功能，主要是为了分析socket 通信中服务器和客户端的差异，未考虑关闭程序时关闭端口等因素。附上Eclipse3.4下高度的项目~下载后，直接导入即可运行~
