Java客户端与服务器端聊天程序-优快云博客

本文链接：https://blog.youkuaiyun.com/tao00000/article/details/46726461

本文介绍了一个简单的Java客户端与服务器端聊天程序，通过使用Socket进行通信，实现了客户端发送消息到服务器，服务器接收并转发消息的功能。程序包括客户端和服务器两部分，客户端负责输入消息并发送，服务器则接收消息并转发给所有连接的客户端。

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

public class ChatClient {
public static void main(String args[]){
try{
Socket socket = new Socket("127.0.0.1",4000);
System.out.println("输入你要说的话，如果要退出输入bye");
BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));
PrintWriter os =new PrintWriter(socket.getOutputStream());
BufferedReader is = new BufferedReader(new InputStreamReader(socket.getInputStream()));
String readline;
readline = sin.readLine();
while(! readline.equals("bye")){
os.println(readline);
os.flush();
System.out.println("Client:"+readline);
System.out.println("Server:"+is.readLine());
readline=sin.readLine();
}
os.close();
is.close();
socket.close();

}catch(Exception e){
System.out.println("Error"+e);
}
}

}

import java.io.*;
import java.net.*;
import java.applet.Applet;

@SuppressWarnings("unused")
public class ChatServer {
public static void main(String args[]){
try{
ServerSocket server=null;
try{
server = new ServerSocket(4000);
System.out.println("准备好了，退出输入bye");
}catch(Exception e){
System.out.println("can't listen to:"+e);
}
Socket socket = null;
try{
socket=server.accept();

}catch(Exception e){
System.out.println("Error."+e);
}
String line;
BufferedReader is =new BufferedReader(new InputStreamReader(socket.getInputStream()));
PrintWriter os = new PrintWriter(socket.getOutputStream());
BufferedReader sin = new BufferedReader(new InputStreamReader(System.in));
System.out.println("Client:"+is.readLine());
line = sin.readLine();
while(! line.equals("bye")){
os.println(line);
os.flush();
System.out.println("Server:"+line);
System.out.println("Client:"+is.readLine());
line = sin.readLine();
}
os.close();
is.close();
socket.close();
server.close();
}catch(Exception e){
System.out.println("Error:"+e);
}
}

}