示例1：Address
package com.etc.jichu; import java.net.InetAddress; public class Address { public static void main(String[] args) { InetAddress ip; try { ip = InetAddress.getLocalHost(); String localname = ip.getHostName(); String localip = ip.getHostAddress(); System.out.println("本机名：" + localname); System.out.println("本机IP地址：" + localip); } catch (Exception e) { e.printStackTrace(); } } }
示例2：MyTcp
package com.etc.jichu;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class MyTcp
{
private BufferedReader reader;
private ServerSocket server;
private Socket socket;
void getserver()
{
try
{
server = new ServerSocket(49211);
System.out.println("服务器套接字已经创建成功！");
while (true) {
System.out.println("等待客户机的连接");
socket = server.accept();
reader = new BufferedReader(new InputStreamReader(socket
.getInputStream()));
getClientMessage();
}
}
catch (Exception e)
{
e.printStackTrace();
}
}
private void getClientMessage()
{
try {
while (true) {
System.out.println("客户机：" + reader.readLine());
}
} catch (Exception e) {
e.printStackTrace();
}
try {
if (reader != null) {
reader.close();
}
if (socket != null) {
socket.close();
}
} catch (IOException e) {
e.printStackTrace();
}
}
public static void main(String[] args)
{
new MyTcp().getserver();
}
}
示例3：MyClien
package com.etc.jichu;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.PrintWriter;
import java.net.Socket;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.border.BevelBorder;
public class MyClien extends JFrame
{
private PrintWriter writer;
Socket socket;
private JTextArea ta=new JTextArea();
private JTextField tf=new JTextField();
Container cc;
public MyClien(String title)
{
super(title);
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
cc=this.getContentPane();
final JScrollPane scrollPane=new JScrollPane();
scrollPane.setBorder(new BevelBorder(BevelBorder.RAISED));
getContentPane().add(scrollPane,BorderLayout.CENTER);
scrollPane.setViewportView(ta);
cc.add(tf, "South");
tf.addActionListener(new ActionListener()
{
//绑定事件
public void actionPerformed(ActionEvent e)
{
writer.print(tf.getText());//写入流
//显示
ta.append(tf.getText()+"
");
ta.setSelectionEnd(ta.getText().length());
//清空
tf.setText("");
}
});
}
private void connect(){
ta.append("尝试连接
");
try {
socket = new Socket("127.0.0.1", 3306);
writer = new PrintWriter(socket.getOutputStream(), true);
ta.append("完成连接
");
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args)
{
MyClien clien=new MyClien("向服务器发送数据");
clien.setSize(200,200);//设置窗体大小
clien.setVisible(true);//将窗体设置可见
clien.connect();//调用连接方法
}
}