[JAVA100例]044、多线程服务器：每个人都有份
// 文件名：moreServer.Java
import java.io.*;
import java.net.*;
import java.util.*;
/**
* <p>Title: 多线程服务器</p>
* <p>Description: 本实例使用多线程实现多服务功能。</p>
* <p>Copyright: Copyright (c) 2003</p>
* <p>Filename: </p>
* @version 1.0
*/
class moreServer
{
public static void main (String [] args) throws IOException
{
System.out.println ("Server starting...
");
//使用8000端口提供服务
ServerSocket server = new ServerSocket (8000);
while (true)
{
//阻塞，直到有客户连接
Socket sk = server.accept ();
System.out.println ("Accepting Connection...
");
//启动服务线程
new ServerThread (sk).start ();
}
}
}
//使用线程，为多个客户端服务
class ServerThread extends Thread
{
private Socket sk;
ServerThread (Socket sk)
{
this.sk = sk;
}
//线程运行实体
public void run ()
{
BufferedReader in = null;
PrintWriter out = null;
try{
InputStreamReader isr;
isr = new InputStreamReader (sk.getInputStream ());
in = new BufferedReader (isr);
out = new PrintWriter (
new BufferedWriter(
new OutputStreamWriter(
sk.getOutputStream ())), true);
while(true){
//接收来自客户端的请求，根据不同的命令返回不同的信息。
String cmd = in.readLine ();
System.out.println(cmd);
if (cmd == null)
break;
cmd = cmd.toUpperCase ();
if (cmd.startsWith ("BYE")){
out.println ("BYE");
break;
}else{
out.println ("你好，我是服务器！");
}
}
}catch (IOException e)
{
System.out.println (e.toString ());
}
finally
{
System.out.println ("Closing Connection...
");
//最后释放资源
try{
if (in != null)
in.close ();
if (out != null)
out.close ();
if (sk != null)
sk.close ();
}
catch (IOException e)
{
System.out.println("close err"+e);
}
}
}
}