试上高峰窥浩月，偶开天眼觑红尘，可怜身是眼中人
图片发自简书App
InetAddress类
package page1;
import java.net.InetAddress;
import java.net.UnknownHostException;
public class MyTcp {
public static void main(String[] args) {
InetAddress ip;
try {
ip=InetAddress.getLocalHost();
System.out.println("主机名：" + ip.getHostName());
System.out.println("IP：" + ip.getHostAddress());
} catch (UnknownHostException e) {
e.printStackTrace();
}
}
}
image.png
TCP网络程序
服务器端
package page2;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class TCP_Server {
private BufferedReader reader;//从字符输入流中读取文本
private ServerSocket server;//服务器套接字
private Socket socket;//客户端套接字
void getServer() throws Exception {
server=new ServerSocket(1865);//创建套接字绑定到1865端口
System.out.println("服务器套接字创建成功");
while(true)
{
System.out.println("等待计算机的连接");
socket=server.accept();//等待客户端连接，若连接，创建一个套接字
reader=new BufferedReader(new InputStreamReader(socket
.getInputStream()));
getClientMassage();
}
}
private void getClientMassage() throws Exception {
while(true)
{
System.out.println("Tsthzang:" + reader.readLine());
}
}
public static void main(String[] args) throws Exception {
TCP_Server tcp_server=new TCP_Server();
tcp_server.getServer();
}
}
客户端
package page2;
import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.IOException;
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 TCP_Client extends JFrame{
private PrintWriter writer;
Socket socket;
private JTextArea ta=new JTextArea();
private JTextField tf=new JTextField();
Container cc;
public TCP_Client(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() {
@Override
public void actionPerformed(ActionEvent arg0) {
writer.println(tf.getText());
ta.append(tf.getText()+'\n');
ta.setSelectionEnd(ta.getText().length());
tf.setText("");
}
});
}
private void connect() throws Exception {
ta.append("尝试连接\n");
socket=new Socket("127.0.0.1", 1865);
writer=new PrintWriter(socket.getOutputStream(),true);
ta.append("连接完成\n");
}
public static void main(String[] args) throws Exception {
TCP_Client client=new TCP_Client("聊天程序客户端");
client.setSize(200,200);
client.setVisible(true);
client.connect();
}
}
image.png
package page2;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.ServerSocket;
import java.net.Socket;
public class TCP_Server {
private BufferedReader reader;//从字符输入流中读取文本
private ServerSocket server;//服务器套接字
private Socket socket;//客户端套接字
void getServer() {
try {
server=new ServerSocket(1865);
System.out.println("服务器套接字创建成功");
while(true)
{
System.out.println("等待计算机的连接");
socket=server.accept();
reader=new BufferedReader(new InputStreamReader(socket
.getInputStream()));
getClientMassage();
}
}
catch (IOException e)
{
e.printStackTrace();
}
}
private void getClientMassage() {
try{
while(true)
{
System.out.println("Tsthzang:" + reader.readLine());
}
}
catch (IOException 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) {
TCP_Server tcp_server=new TCP_Server();
tcp_server.getServer();
}
}
ServerSocket类
ServerSocket的构造方法都抛出IOException
accept();//等待客户端连接，若连接，创建一个套接字(返回值：Socket)
bind(SocketAddress endpoint);//绑定到特定地址（IP地址和端口号）
isBound();//判断ServerSocket的绑定状态
getInetAddress();//返回此服务器套接字的本地地址(返回值：InetAddress)
getInetAddress();//返回此服务器套接字等待的端口号(返回值：int)
isClosed();//判断关闭状态
close();//关闭
