本文实例讲述了java Tcp通信客户端与服务器端。分享给大家供大家参考，具体如下：

由服务器端发送数据

服务器端：

import java.io.*;
import java.net.*;
public class TestSocket {
 public static void main(String[] args) {
 try {
  ServerSocket ss = new ServerSocket(8888);
  while(true) {
  Socket s = ss.accept();
  OutputStream os = s.getOutputStream();
  DataOutputStream dos = new DataOutputStream(os);
  dos.writeUTF("hello" + s.getInetAddress() + "port" + s.getPort() + "beybye");
  dos.close();
//  os.flush();
  os.close();
//  s.close();
  }
 } catch (IOException e) {
  e.printStackTrace();
  System.out.println("there is a wrong");
 }
 }
}

用户端：

import java.io.*;
import java.net.*;
public class TestClient {
 public static void main(String[] args){
 try {
  Socket s = new Socket("127.0.0.1",8888);
  DataInputStream dis = new DataInputStream(s.getInputStream());
  System.out.println(dis.readUTF()); 
  s.close();
  dis.close();
 } catch (Exception e) {
  e.printStackTrace();
 }
 }
}

无论是客户端还是服务器端都可以收发数据。

交互型

用户端

import java.io.*;
import java.net.*;
public class TestClient2 {
 public static void main(String[] args){
 try {
  Socket s = new Socket("127.0.0.1",8886);
  DataOutputStream dos = new DataOutputStream(s.getOutputStream());
  DataInputStream dis = new DataInputStream(s.getInputStream());
  System.out.println(dis.readUTF()); 
  dos.writeUTF("hey");
  String str = null;
  if((str = dis.readUTF()) != null) {
  System.out.println(str);
  }
  s.close();
  dis.close();
  dos.close();
 } catch (Exception e) {
  e.printStackTrace();
 }
 }
}

服务器端：

public class TestServer2 {
 public static void main(String[] args) {
 InputStream in = null;
 OutputStream out = null;
 try {
  ServerSocket ss = new ServerSocket(8886);
  while(true) {
  Socket s = ss.accept();
  in = s.getInputStream();
  out = s.getOutputStream();
  DataOutputStream dos = new DataOutputStream(s.getOutputStream());
  DataInputStream dis = new DataInputStream(s.getInputStream());
  String str = null;
  if((str = dis.readUTF() )!= null) {
   System.out.println(str);
   System.out.println("form " + s.getInetAddress());
   System.out.println("port " + s.getPort());
//   dos.writeUTF("hello" + s.getInetAddress() + "port" + s.getPort() + "beybye");
  }
  dos.writeUTF("hi hello");
  dis.close();
  dos.close();
  s.close();
  }
 } catch (IOException e) {
  e.printStackTrace();
  System.out.println("there is a wrong");
 }
 }
}

更多关于java相关内容感兴趣的读者可查看本站专题：《Java Socket编程技巧总结》、《Java文件与目录操作技巧汇总》、《Java数据结构与算法教程》、《Java操作DOM节点技巧总结》和《Java缓存操作技巧汇总》

希望本文所述对大家java程序设计有所帮助。