JAVA编写服务器和客户端

1、服务器

程序代码如下：

import java.io.*;

import https://www.360docs.net/doc/d110212437.html,.*;

import java.awt.*;

import java.awt.event.*;

public class aaa extends Frame implements ActionListener {

Label label = new Label("交谈内容");

Panel panel = new Panel();

TextField tf = new TextField(10);

TextArea ta = new TextArea();

ServerSocket server;

Socket client;

InputStream in;

OutputStream out;

public aaa() {

super("服务器");

setSize(80, 80);

panel.add(label);

panel.add(tf);

tf.addActionListener(this);

add("West", panel);

add("Center", ta);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

show();

try

server = new ServerSocket(4000);

client = server.accept();

ta.append("客户机端：" + client.getInetAddress().getHostName() + "\n\n");

in =client.getInputStream();

out= client.getOutputStream();

} catch (IOException ioe) {

}

while (true) {

try {

byte[] buf = new byte[256];

in.read(buf);

String str = new String(buf);

ta.append("服务器端：" + str + "\n\n");

} catch (IOException e) {

}

}

}

public void actionPerformed(ActionEvent e) {

try {

String str = tf.getText();

byte[] buf = str.getBytes();

tf.setText(null);

out.write(buf);

ta.append("：" + str + "\n");

} catch (IOException ioe) {

}

}

public static void main(String[] args) {

new aaa();

}

}

运行结果：

2、客户端

程序代码如下：

import java.io.*;

import https://www.360docs.net/doc/d110212437.html,.*;

import java.awt.*;

import java.awt.event.*;

public class client extends Frame implements ActionListener {

Label label = new Label("交谈内容");

Panel panel = new Panel();

TextField tf = new TextField(10);

TextArea ta = new TextArea();

Socket client;

InputStream in;

OutputStream out;

public client() {

super("客户端");

setSize(250, 250);

panel.add(label);

panel.add(tf);

tf.addActionListener(this);

add("West", panel);

add("Center", ta);

addWindowListener(new WindowAdapter() {

public void windowClosing(WindowEvent e) {

System.exit(0);

}

});

show();

try {

client = new Socket(InetAddress.getLocalHost(), 4000);

ta.append("您服务器是：" + client.getInetAddress().getHostName() + "\n\n");

in = client.getInputStream();

out = client.getOutputStream();

} catch (IOException ioe) {

}

while (true) {

try {

byte[] buf = new byte[256];

in.read(buf);

String str = new String(buf);

ta.append("服务器端：" + str + "\n");

} catch (IOException e) {

}

}

}

public void actionPerformed(ActionEvent e) {

try {

String str = tf.getText();

byte[] buf = str.getBytes();

tf.setText(null);

out.write(buf);

ta.append("客户端：" + str + "\n");

} catch (IOException iOE) {

}

}

public static void main(String args[]) {

new client();

}

}

运行结果：

最后输入信息，如：你好吗？