serverdemo.java

互联网多人联机对垒游戏-分服务端、客户端

import java.net.ServerSocket;
import java.net.Socket;
import java.io.InputStreamReader;
import java.io.BufferedReader;
import java.io.PrintStream;
import java.io.IOException;
class ServerDemo{
	public static void main(String[] args){
		int sPort;
		ServerSocket sSocket=null;
		Socket cSocket=null;
		BufferedReader reader=null;
		PrintStream writer=null;
		String msg="This is the message from the server.";
		String receiveMsg;
		try{
			sPort=6000;  //设置服务器的端口号
			sSocket=new ServerSocket(sPort);  //创建监听ServerSocket套接字
			cSocket=sSocket.accept();  //监听，并产生对应的Socket套接字.
			//获取套接字的输入输出流对象
			reader=new BufferedReader(new InputStreamReader(cSocket.getInputStream()));
			writer=new PrintStream(cSocket.getOutputStream());
			//先向客户端发送一行数据
			writer.println("Hello,请发送数据过来----服务器.");
			//再从客户端读取信息
			receiveMsg=reader.readLine();
			System.out.println("收到客户端信息->"+receiveMsg);
			reader.close();
			writer.close();
			cSocket.close();
			sSocket.close();
		}catch(IOException e){
			System.out.println("套接字、输入输出流创建失败或网络IO出现错误.");
			try{
				if(reader!=null) reader.close();
				if(writer!=null) writer.close();
				if(cSocket!=null) cSocket.close();
				if(sSocket!=null) sSocket.close();
			}catch(IOException e2){}
		}
	}
}