简单的客户端服务器程序不起作用

本文介绍了简单的客户端服务器程序不起作用的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

服务器程序:

import java.io.*; import java.*; public class server { public static void main(String args[]) { try { ServerSocket ss=new ServerSocket(2000); Socket s=ss.accept(); BufferedReader br=new BufferedReader(new InputStreamReader(s.getInputStream())); String str; while((str=br.readLine())!=null) { System.out.println(str); } } catch(Exception e) { System.out.println(e); } } }

客户端程序:

import java.*; import java.io.*; public class client { public static void main(String args[]) { try { Socket s=new Socket("127.0.0.1",2000); String str; BufferedWriter br=new BufferedWriter(new OutputStreamWriter(s.getOutputStream())); br.write("\nHello World\n"); } catch(Exception e) { System.out.println(e); } } }

我面临的问题是:

无输出.

未指明异常/错误.

如果我做错了什么，请向我解释.问题可能是客户端在服务器读取时没有写入任何内容.

Please explain me if am doing anything wrong. The problem might be the client has not written anything while the server is reading.

推荐答案

在客户端程序写入流后关闭流br.close();

Close the stream after writing to stream in client program br.close();

写入流后，必须关闭流或刷新流(br.flush())，因为当流关闭时，只能读取该流.不能同时在同一个流上执行 I/O 操作.

After Writing to stream it is compulsory to close the stream or flush the stream(br.flush()) because when stream is closed then only that stream can be read. I/O operations can not be performed on same stream simultaneously.

两个套接字通过同一个流连接，因此无法在该流上同时执行 I/O 操作.

Two sockets are connected by same stream so I/O operations can not be performed simultaneously on that stream.