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效果图:
//UDP通信
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.*;
import javax.swing.*;
class send extends JFrame implements ActionListener{
private JTextArea Chat; //显示框
private JTextField Mes; //输入框
DatagramSocket soc;
public send(){ //构造函数
try {
soc = new DatagramSocket();
} catch (SocketException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
GUI("客户端");
while(true){
GetMsg();
}
}
public static void main(String args[]){
new send();
}
public void GUI(String str){ //图形化界面
this.setTitle(str);
Container container = this.getContentPane();
JButton send = new JButton("发送");
JLabel msg = new JLabel("消息内容");
Chat = new JTextArea();
Mes = new JTextField(20);
Chat.setEditable(false);
JScrollPane contain = new JScrollPane(); //滚动框
contain.setViewportView(Chat);
container.setLayout(new BorderLayout()); //设置布局方式
container.add(contain,BorderLayout.CENTER);
JPanel botton = new JPanel();
Mes.addActionListener(this);
send.addActionListener(this); //绑定监听
botton.add(msg);
botton.add(Mes);
botton.add(send);
container.add(botton,BorderLayout.SOUTH);
this.show(true);
this.setSize(600, 400);
}
//与Button绑定的方法
public void actionPerformed(ActionEvent e) {
String str = Mes.getText(); //取得文本域的内容
if(str.equals("")){
Chat.append("提示:消息不可以为空!!!\n");
}else{
Chat.append("我说:"+str+"\n");
//UDP发包
SendMsg(str);
}
Mes.setText("");
}
//发包
public void SendMsg(String str){
try {
DatagramPacket packet = new DatagramPacket(str.getBytes(),str.getBytes().length,
InetAddress.getByName("127.0.0.1"),11190);
soc.send(packet);
} catch (Exception e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
//接收
public void GetMsg(){
byte data[]= new byte[1024];
DatagramPacket packet = new DatagramPacket(data,data.length);
try {
//DatagramSocket soc = new DatagramSocket();
soc.receive(packet);
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
Chat.append("服务:"+new String(packet.getData(),0,packet.getData().length)+"\n");
}
}
//UDP通信
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
import java.net.*;
import javax.swing.*;
class recevice extends JFrame implements ActionListener{
private JTextArea Chat; //显示框
private JTextField Mes; //输入框
DatagramSocket soc;
InetAddress adr;
int port;
public recevice(){ //构造函数
try {
soc = new DatagramSocket(11190);
} catch (SocketException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
GUI("服务端");
while(true){
GetMsg();
}
}
public static void main(String args[]){
new recevice();
}
public void GUI(String str){ //图形化界面
this.setTitle(str);
Container container = this.getContentPane();
JButton send = new JButton("发送");
JLabel msg = new JLabel("消息内容");
Chat = new JTextArea();
Mes = new JTextField(20);
Chat.setEditable(false);
JScrollPane contain = new JScrollPane(); //滚动框
contain.setViewportView(Chat);
container.setLayout(new BorderLayout()); //设置布局方式
container.add(contain,BorderLayout.CENTER);
JPanel botton = new JPanel();
Mes.addActionListener(this);
send.addActionListener(this); //绑定监听
botton.add(msg);
botton.add(Mes);
botton.add(send);
container.add(botton,BorderLayout.SOUTH);
this.show(true);
this.setSize(600, 400);
}
//与Button绑定的方法
public void actionPerformed(ActionEvent e) {
String str = Mes.getText(); //取得文本域的内容
if(str.equals("")){
Chat.append("提示:消息不可以为空!!!\n");
}else{
Chat.append("我说:"+str+"\n");
//UDP发包
SendMsg(str);
}
Mes.setText("");
}
//发包
public void SendMsg(String str){
try {
DatagramPacket packet = new DatagramPacket(str.getBytes(),str.getBytes().length,adr,port);
//DatagramSocket soc = new DatagramSocket();
soc.send(packet);
} catch (Exception e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
}
//接收
public void GetMsg(){
byte data[]= new byte[1024];
DatagramPacket packet = new DatagramPacket(data,1024);
try {
soc.receive(packet);
adr=packet.getAddress();
port=packet.getPort();
} catch (IOException e) {
// TODO 自动生成的 catch 块
e.printStackTrace();
}
Chat.append("客户:"+new String(packet.getData(),0,packet.getData().length)+"\n");
}
}
-----------------------------------------------------------------------------------------------------------------------------------------
//tcp实现
<服务端>
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class getmsg extends JFrame implements Action{
private JTextArea Chat ;
private JTextField sms ;
private ServerSocket serverSocket ;
private Socket socket;
DataInputStream in;
public static void main(String[] args) {
new getmsg();
}
public getmsg() {
GUI("服务端");
try {
serverSocket = new ServerSocket(20000);
} catch (IOException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
try {
socket = new Socket();
socket = serverSocket.accept();
in = new DataInputStream(socket.getInputStream());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
new getmes().start();
}
/**
* 获取消息线程
*/
class getmes extends Thread{
@Override
public void run() {
super.run();
while(true){
try {
Chat.append("对方: >"+in.readUTF()+"\n");
//in.close();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
}
/**
* 发送消息线程
*/
class sendmes extends Thread{
@Override
public void run() {
super.run();
System.out.println("发送线程");
DataOutputStream out;
try {
out = new DataOutputStream(socket.getOutputStream());
//System.out.println(">>>>"+socket.isClosed());
//System.out.println(">>>>"+sms.getText().trim());
out.writeUTF(sms.getText().trim());
//out.close();
Chat.append("我: >"+sms.getText().trim()+"\n");
sms.setText("");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
public void GUI(String title){
this.setTitle(title);
Container container = this.getContentPane();
Chat = new JTextArea(); //内容显示框
JScrollPane center = new JScrollPane(); //滚动版
sms = new JTextField(20);
JButton send = new JButton("发送");
JLabel mes = new JLabel("输入消息:");
container.setLayout(new BorderLayout());
center.setViewportView(Chat);
Chat.setEditable(false);
container.add(center);
JPanel bottom = new JPanel();
bottom.add(mes);
bottom.add(sms);
bottom.add(send);
container.add(bottom,BorderLayout.SOUTH);
this.setSize(600, 400);
this.show(true);
send.addActionListener(this); //设置监听
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
new sendmes().start();
System.out.println(socket.isClosed());
}
@Override
public Object getValue(String key) {
// TODO Auto-generated method stub
return null;
}
@Override
public void putValue(String key, Object value) {
// TODO Auto-generated method stub
}
}
<客户端>
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.net.UnknownHostException;
import javax.swing.Action;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class send extends JFrame implements Action{
private JTextArea Chat ;
private JTextField sms ;
private Socket socket;
private DataOutputStream out;
private DataInputStream in;
public static void main(String[] args) {
new send();
}
public send() {
GUI("客户端");
try {
socket = new Socket("192.168.56.1", 20000);
in= new DataInputStream(socket.getInputStream());
} catch (UnknownHostException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
//开启新线程
new rec().start();
}
/**
* 接收线程
*/
class rec extends Thread{
@Override
public void run() {
super.run();
while(true){
try{
Chat.append("对方: >"+in.readUTF()+"\n");
}catch(Exception exception){}
}
}
}
/**
* 发送线程
*/
class sendmsg extends Thread{
@Override
public void run() {
super.run();
try {
System.out.println(">>>>"+socket.getPort()+">>"+socket.getLocalAddress().toString());
out = new DataOutputStream(socket.getOutputStream());
out.writeUTF(sms.getText().trim());
//out.close();
Chat.append("我: >"+sms.getText().trim()+"\n");
sms.setText("");
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
/**
* 图形端
*/
public void GUI(String title){
this.setTitle(title);
Container container = this.getContentPane();
Chat = new JTextArea(); //内容显示框
JScrollPane center = new JScrollPane(); //滚动版
sms = new JTextField(20);
JButton send = new JButton("发送");
JLabel mes = new JLabel("输入消息:");
container.setLayout(new BorderLayout());
center.setViewportView(Chat);
Chat.setEditable(false);
container.add(center);
JPanel bottom = new JPanel();
bottom.add(mes);
bottom.add(sms);
bottom.add(send);
container.add(bottom,BorderLayout.SOUTH);
this.setSize(600, 400);
this.show(true);
send.addActionListener(this); //设置监听
}
@Override
public void actionPerformed(ActionEvent e) {
// TODO Auto-generated method stub
System.out.println("Onclick");
new sendmsg().start(); //发送信息启动新线程
}
@Override
public Object getValue(String key) {
// TODO Auto-generated method stub
return null;
}
@Override
public void putValue(String key, Object value) {
// TODO Auto-generated method stub
}
}
[Java] Tcp/udp 简单通信,布布扣,bubuko.com
原文：http://blog.csdn.net/guozeyiblog/article/details/37822043