java-TCP初步示例.-优快云博客

本文提供了一个简单的Java TCP客户端与服务器通信的例子。服务器监听9527端口接收客户端发送的消息，并将接收到的消息及自身IP地址打印出来，然后向客户端回传一条确认消息。客户端连接到指定IP和端口的服务器，发送一条测试消息并打印服务器返回的内容。

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import java.io.*;
import java.net.*;
class TCPDemo
{
 }

class Server
{
public static void main(String[] args) throws Exception { ServerSocket ss = new ServerSocket(9527); Socket s = ss.accept(); String ip = s.getInetAddress().getHostAddress(); //String name = s.getInetAddress().getHostName(); //解析过程较-慢

InputStream in = s.getInputStream();

byte [] b = new byte[1024]; int len = in.read(b); System.out.print(ip + ".." + new String(b, 0, len)); OutputStream out = s.getOutputStream(); out.write("收到请求".getBytes());

s.close(); ss.close(); } }

class Client
{
public static void main(String[] args) throws Exception { Socket s = new Socket("192.168.1.101", 9527); OutputStream out = s.getOutputStream(); out.write("Tcp demo -> run".getBytes()); InputStream in = s.getInputStream(); byte [] buf = new byte[1024]; int len = in.read(buf);

System.out.println(new String(buf,0,len));

s.close(); } }