Java进行多连接socket编程

之前介绍的java socket编程,只能是一对一.server端只接受一个client,现在,我们在server端再加一层,让他可以接多个client.

 

import java.io.*;
import java.net.*;

public class MultiServer
{
    public static void main(String[] args) throws IOException
    {
        ServerSocket server=new ServerSocket(8000);
        while (true)
        {
            Socket client=server.accept();
            BufferedReader in=new BufferedReader(new InputStreamReader(client.getInputStream()));
            PrintWriter out=new PrintWriter(client.getOutputStream());
            while (true)
            {
                String str=in.readLine();
                System.out.println(str);
                out.println("has receive....");
                out.flush();
                if (str.equals("end"))
                    break;
            }
            client.close();
        }
    }
}


不过,还是有点问题.首先启动server端,client端继续按照之前的进行启动.不过这种模式属于阻塞模式.同时启动多个客户端,只有一个client端可以和服务端通话.当一个client端退出结束后,另一个客户端才可以进入对话.在现实生活中,并不常用.之后,我们再看一下如何解决并发的问题.