读JAVA网络编程精解 服务器与客户端通信一

文中引用了孙老师的代码，并注明。
import java.io.*;
import java.net.*;
public class EchoServer {
private int port=8888;
private ServerSocket serverSocket;
public EchoServer() throws IOException {
serverSocket = new ServerSocket(port);
System.out.println("服务器启动");
}
public String echo(String msg) {
return "echo:" + msg;
}
private PrintWriter getWriter(Socket socket)throws IOException{
OutputStream socketOut = socket.getOutputStream();
return new PrintWriter(socketOut,true);
}
private BufferedReader getReader(Socket socket)throws IOException{
InputStream socketIn = socket.getInputStream();
return new BufferedReader(new InputStreamReader(socketIn));
}
public void service() {
while (true) {
Socket socket=null;
try {
socket = serverSocket.accept(); //等待客户连接
System.out.println("New connection accepted "
+socket.getInetAddress() + ":" +socket.getPort());
BufferedReader br =getReader(socket);
PrintWriter pw = getWriter(socket);
String msg = null;
while ((msg = br.readLine()) != null) {
System.out.println(msg);
pw.println(echo(msg));
if (msg.equals("bye")) //如果客户发送的消息为“bye”，就结束通信
break;
}
}catch (IOException e) {
e.printStackTrace();
}finally {
try{
if(socket!=null)socket.close(); //断开连接
}catch (IOException e) {e.printStackTrace();}
}
}
}
public static void main(String args[])throws IOException {
new EchoServer().service();
}
}
/****************************************************
* 作者：孙卫琴 *
* 来源：<<Java网络编程精解>> *
* 技术支持网址：www.javathinker.org *
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