java控制台多人聊天室
菜鸟小星啦 人气:0多人聊天室就要用到网络以及多线程以及输入输出流的知识
多人聊天室就是多个人同时聊天,一个发一条信息所有人都是可以接收得到.
接下来我们捋清楚一下思路
在这里面服务器充当了一个转发的作用,服务器要做的事情是,得到客户写进缓冲流里面的信息,再把得到的信息再写进其他客户端的缓冲流里面,得到其他用户的缓冲流我们可以通过集合把用户的全部Socket对象写进集合里面,客户端把客户想要发送的信息写进缓冲流里,等待客户端发来的消息,一边等由一边发送消息,这个是属于并发的一个操作,所以读与写可以单独开个线程来进行发送消息.
下面是客户端的代码
import java.io.IOException;
import java.net.ServerSocket;
import java.net.Socket;
import java.util.ArrayList;
import java.util.List;
public class Server {
public static List<Socket> links = new ArrayList<>(); //用来存储客户端的socket对象
public static void main(String[] args) throws IOException {
ServerSocket serverSocket = new ServerSocket(6666);
while(true){
Socket accept = serverSocket.accept();
links.add(accept); //只要有人连接就可以把他添加进socket对象集合里
ServerThread serverThread = new ServerThread(accept); //开启多线程,实现多人聊天的功能
serverThread.start();
}
}
//因为频繁的对输入输出流进行资源的关闭,所以写了个关闭资源的工具类
import java.io.Closeable;
import java.io.IOException;
public class CloseUtil {
public static void close(Closeable... closeables){
for (Closeable closeable : closeables) {
if (closeable!=null) {
try {
closeable.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
//多线程的代码如下
import java.io.*;
import java.net.Socket;
import java.util.List;
public class ServerThread extends Thread {
private Socket socket;
private boolean flag = true;
public ServerThread(String name, Socket socket) {
super(name);
this.socket = socket;
}
@Override
public void run() {
while(flag){
sendother(received()); //转发功能
}
}
private void sendother(String str) {
List<Socket> links = Server.links; //因为在写客户端的时候是socket的集合是 静态的属性,所以可以直接通过类型.属性直接获得
for (Socket link : links) {
if (link!=socket)
send(str,link); //遍历整个对象转发给除当前对象的其他socket对象
}
}
private void send(String str,Socket socket) {
BufferedWriter bw = null;
try {
OutputStream outputStream = socket.getOutputStream();
bw = new BufferedWriter(new OutputStreamWriter(outputStream));
bw.write(str);
bw.newLine();
bw.flush();
} catch (IOException e) {
flag = false;
CloseUtil.close(bw,socket);
}
}
private String received(){
BufferedReader br = null;
try {
InputStream inputStream = socket.getInputStream();
br = new BufferedReader(new InputStreamReader(inputStream));
return br.readLine();
} catch (IOException e) {
flag = false;
CloseUtil.close(br,socket);
}
return null;
}
}下面是客户端的代码
import java.io.IOException;
import java.net.Socket;
import java.util.Scanner;
public class Client {
public static void main(String[] args) throws IOException {
Scanner input = new Scanner(System.in);
System.out.print("请输入您的名字:");
String name = input.next();
Socket socket = new Socket("127.0.0.1", 6666); //127.0.0.1是指的是本机
Send send = new Send(socket,name); //收发分别开两个线程,可以收发并发执行
Receive receive = new Receive("",socket);
send.start();
receive.start();
}
}
//发线程
import java.io.BufferedWriter;
import java.io.IOException;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.net.Socket;
import java.util.Scanner;
public class Send extends Thread {
private Socket socket;
private boolean flag = true;
public Send(Socket socket,String name) {
super(name);
this.socket = socket;
}
@Override
public void run() {
while(flag){
send(); //一直循环保证客户可以一直发
}
}
private void send() {
Scanner input = new Scanner(System.in);
BufferedWriter bw= null;
try {
OutputStream outputStream = socket.getOutputStream();
bw = new BufferedWriter(new OutputStreamWriter(outputStream));
bw.write(this.getName()+"说:"+input.next()); // 当前线程名+在客户端在控制台输出的一并发给服务端
bw.newLine();
bw.flush();
} catch (IOException e) {
flag = false; //出现异常的时候关闭循环,防止陷入死循环
CloseUtil.close(bw,socket);
}
}
}
//收线程
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.net.Socket;
public class Receive extends Thread {
private Socket socket;
private boolean flag = true;
public Receive(String name, Socket socket) {
super(name);
this.socket = socket;
}
@Override
public void run() {
while (flag){
System.out.println(received()); //循环保证能一直接收服务器发来的消息
}
}
public String received(){
BufferedReader br =null;
try {
InputStream inputStream = socket.getInputStream();
br = new BufferedReader(new InputStreamReader(inputStream));
String line = br.readLine();
return this.getName()+line;
} catch (IOException e) {
flag = false;
CloseUtil.close(br,socket);
}
return "";
}
}以上就是简易版聊天室，希望对大家的学习有所帮助，也希望大家多多支持。
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