java实现一个简答而实际的TCP的服务端和客户端连接

java实现一个简答而实际的TCP的服务端和客户端连接

服务端：

package com.server;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.OutputStream;

import https://www.360docs.net/doc/192019777.html,.ServerSocket;

import https://www.360docs.net/doc/192019777.html,.Socket;

import https://www.360docs.net/doc/192019777.html,.SocketTimeoutException;

import java.text.SimpleDateFormat;

import java.util.Date;

public class TcpIpServer {

public static void main(String[] args) {

// info Auto-generated method stub

ServerSocket serverSocket = null;

try {

serverSocket = new ServerSocket(7777);

System.out.println(getTime()+"服务端准备好啦.");

} catch (IOException e) {

// info Auto-generated catch block

e.printStackTrace();

}

while(true){

try {

System.out.println(getTime()+"等待连接请求.");

// serverSocket.setSoTimeout(5*1000);

Socket socket = serverSocket.accept();

System.out.println(getTime()+socket.getInetAddress()+"连接请求从这开始.");

OutputStream out = socket.getOutputStream();

DataOutputStream dos = new DataOutputStream(out);

dos.writeUTF("[Notice]Test Message1 from Server.");

System.out.println(getTime()+"数据传送啦.");

dos.close();

socket.close();

}

//catch(SocketTimeoutException e){

// System.out.println("end!");

// System.exit(0);

// }

catch (IOException e) {

// info Auto-generated catch block

e.printStackTrace();

}

}

}

static String getTime() {

// info Auto-generated method stub

SimpleDateFormat f = new SimpleDateFormat("[hh:mm:s]");

return f.format(new Date());

}

}

客户端：

package com.client;

import java.io.DataInputStream;

import java.io.DataOutputStream;

import java.io.IOException;

import java.io.InputStream;

import https://www.360docs.net/doc/192019777.html,.Socket;

import https://www.360docs.net/doc/192019777.html,.UnknownHostException;

public class TcpIpClient {

public static void main(String[] args) {

// info Auto-generated method stub

String serverIp = "127.0.0.1";

System.out.println("服务端连接中.服务端IP : " + serverIp);

try {

Socket socket = new Socket(serverIp, 7777);

InputStream in = socket.getInputStream();

DataInputStream dis = new DataInputStream(in);

System.out.println("从服务端获得消息: " + dis.readUTF());

System.out.println("连接终止.");

dis.close();

socket.close();

System.out.println("关闭连接.");

} catch (UnknownHostException e) {

// info Auto-generated catch block

e.printStackTrace();

} catch (IOException e) {

// info Auto-generated catch block

e.printStackTrace();

}

}

}