服务端核心代码：
server = new ServerSocket(port);
System.out.println("The time server is start in port:"+port);
Socket socket = null;
while (true){
socket = server.accept();
new Thread(new TimeServerHandler(socket)).start();
}
用ServerSocket类来监听port端口打开服务，然后接收到请求之后，就创建新的线程来处理请求，处理类的核心代码如下
in = new BufferedReader(new InputStreamReader(
this.socket.getInputStream()));
out = new PrintWriter(this.socket.getOutputStream(),true);
String currentTime = null;
String body = null;
while (true){
body = in.readLine();
if (body==null){
break;
}
System.out.println("The time server receive order: " + body);
currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body)? new java.util.Date(
System.currentTimeMillis()).toString():"BAO ORDER";
out.println(currentTime);
}
客户端核心代码
socket = new Socket("127.0.0.1",port);
in = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(),true);
out.println("QUERY TIME ORDER");
System.out.println("Send order 2 server succeed.");
String resp = in.readLine();
System.out.println("Now is : " + resp);
客户端使用socker来创建一个socket连接，绑定端口号和ip地址。
完整代码请看
//
import com.sun.security.ntlm.Server;
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
public class TimeServer {
public static void main(String[] args) throws IOException{
/**
* @Author: chaojilaji
* @Description:
* @Date: 16:21 2018/7/21 * @param args laodiao
*/
int port = 8080;
if (args !=null && args.length>0){
try {
port = Integer.valueOf(args[0]);
}catch (NumberFormatException e){
// e.printStackTrace();
}
}
ServerSocket server = null;
try {
server = new ServerSocket(port);
System.out.println("The time server is start in port:"+port);
Socket socket = null;
while (true){
socket = server.accept();
new Thread(new TimeServerHandler(socket)).start();
}
}finally {
if (server != null){
System.out.println("The time server close");
server.close();
server = null;
}
}
}
}
//
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
public class TimeServerHandler implements Runnable{
private Socket socket;
public TimeServerHandler(Socket socket){
this.socket = socket;
}
@Override
public void run() {
BufferedReader in = null;
PrintWriter out = null;
try {
in = new BufferedReader(new InputStreamReader(
this.socket.getInputStream()));
out = new PrintWriter(this.socket.getOutputStream(),true);
String currentTime = null;
String body = null;
while (true){
body = in.readLine();
if (body==null){
break;
}
System.out.println("The time server receive order: " + body);
currentTime = "QUERY TIME ORDER".equalsIgnoreCase(body)? new java.util.Date(
System.currentTimeMillis()).toString():"BAO ORDER";
out.println(currentTime);
}
}catch (Exception e){
if (in!=null){
try {
in.close();
}catch (IOException el){
el.printStackTrace();
}
}
if (out!=null){
out.close();
out = null;
}
if(this.socket!=null){
try {
this.socket.close();
}catch (IOException el){
el.printStackTrace();
}
this.socket = null;
}
}
}
}
//
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.PrintWriter;
import java.net.Socket;
public class TimeClient {
public static void main(String[] args){
int port = 8080;
if (args!=null && args.length>0){
try{
port = Integer.valueOf(args[0]);
}catch (NumberFormatException el) {
//
}
}
Socket socket = null;
BufferedReader in = null;
PrintWriter out = null;
try {
socket = new Socket("127.0.0.1",port);
in = new BufferedReader(new InputStreamReader(
socket.getInputStream()));
out = new PrintWriter(socket.getOutputStream(),true);
out.println("QUERY TIME ORDER");
System.out.println("Send order 2 server succeed.");
String resp = in.readLine();
System.out.println("Now is : " + resp);
}catch (Exception e){
}finally {
if (out!=null){
out.close();
out = null;
}
if (in!=null){
try {
in.close();
}catch (IOException e){
e.printStackTrace();
}
}
if (socket!=null){
try {
socket.close();
}catch (IOException e){
e.printStackTrace();
}
socket = null;
}
}
}
}
先运行服务端程序，在执行客户端请求即可看到效果。
