Java编写多人聊天室

1.客户端

package tk.javazhangwei.net.tcp.chat.Demo03;import java.io.BufferedReader;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStream;import java.io.InputStreamReader;import java.net.Socket;/*** * 创建客户端  发送数据+接收数据 *  * @author zw * */public class Client {public static void main(String[] args) throws IOException {BufferedReader bf = new BufferedReader(new InputStreamReader(System.in));System.out.println("请输入一个喜欢的名称：");String name = bf.readLine();if(name.equals("")) {return;}Socket client = new Socket("localhost",1025);//控制台输入信息//控制台输入信息new Thread(new Send(client,name)).start();//一条路径new Thread(new Receive(client)).start();//一条路径}}

2.服务端（写了个内部类：负责接收与发送多进程）

package tk.javazhangwei.net.tcp.chat.Demo03;import java.io.DataInputStream;import java.io.DataOutputStream;import java.io.IOException;import java.net.ServerSocket;import java.net.Socket;import java.util.ArrayList;import java.util.List;public class Server {List<myChannel> all = new ArrayList<myChannel>();public static void main(String[] args) throws IOException {new Server().start();}public void start() throws IOException {ServerSocket server = new ServerSocket(1025);while (true) {Socket socket = server.accept();myChannel mc = new myChannel(socket);Thread t = new Thread(mc);all.add(mc);t.start();}}/*** * 一个客户端 一个通路 * @author zw * */class myChannel implements Runnable{private DataInputStream dis;private DataOutputStream dos;private boolean isRuning=true;private String name;public myChannel(Socket socket) throws IOException{try {dis = new DataInputStream(socket.getInputStream());dos = new DataOutputStream(socket.getOutputStream());this.name = dis.readUTF();send("欢迎进入聊天室");senOthers(this.name + "进入了聊天室");} catch (IOException e) {// TODO Auto-generated catch block//e.printStackTrace();isRuning=false;dos.close();dis.close();}}/*** * 读取数据 *  * @return * @throws IOException */private String receive() throws IOException {String msg ="";try {msg =dis.readUTF();} catch (IOException e) {// TODO Auto-generated catch block//e.printStackTrace();isRuning=false;dis.close();}return msg;}/*** * 发送数据 * @throws IOException  */private void send(String msg) throws IOException {if(msg==null&& msg.equals("")) {return;}try {dos.writeUTF(msg);dos.flush();} catch (IOException e) {// TODO Auto-generated catch block//e.printStackTrace();isRuning=false;dos.close();all.remove(this);}}/*** * 发送给其他客户端 * @throws IOException  */private void senOthers(String msg) throws IOException {if (msg.startsWith("@")&&msg.indexOf(":")>-1) {// 表示为私聊//获取nameString name = msg.substring(1, msg.indexOf(":"));String content = msg.substring(msg.indexOf(":")+1);//获取冒号后的正文for (myChannel others : all) {if(others.name.equals(name)) {others.send(this.name+"对您瞧瞧的说："+content);}}} else {//遍历容器for(myChannel others:all) {if(others == this) {//如果是本身，就跳过continue;}others.send(this.name+"对所有人说："+msg);}}}@Overridepublic void run() {while(isRuning) {try {senOthers(receive()) ;} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}

3.客户端的发送与接收多进程

package tk.javazhangwei.net.tcp.chat.Demo03;import java.io.BufferedReader;import java.io.DataOutputStream;import java.io.IOException;import java.io.InputStreamReader;import java.net.Socket;/*** * 发送数据 *  * @author zw * */public class Send implements Runnable{//控制台输入流private BufferedReader console;//管道输出流private DataOutputStream dos;private String name;private boolean isRuning =true;//线程是否运行public Send() {console =new BufferedReader(new InputStreamReader(System.in));}public Send(Socket client,String name) throws IOException {this();try {dos = new DataOutputStream(client.getOutputStream());this.name = name;send(name);} catch (IOException e) {// TODO Auto-generated catch block//e.printStackTrace(); isRuning =false; dos.close(); console.close();}}private String getMsgFromConsole() {try {return console.readLine();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}return "";}@Overridepublic void run() {while(isRuning) {try {send(getMsgFromConsole());} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}public void send(String msg) throws IOException {if (msg!=null && !msg.equals("")) {try {dos.writeUTF(msg);dos.flush();// 强制刷新} catch (IOException e) {// TODO Auto-generated catch block// e.printStackTrace();isRuning = false;dos.close();console.close();}}}}

package tk.javazhangwei.net.tcp.chat.Demo03;import java.io.DataInputStream;import java.io.IOException;import java.net.Socket;/*** * 接收数据 * @author zw * */public class Receive implements Runnable{//客户端的输入流private DataInputStream dis;private boolean isRuning = true;public Receive() {} public Receive(Socket client) {super();try {dis = new DataInputStream(client.getInputStream());} catch (IOException e) {// TODO Auto-generated catch block//e.printStackTrace();isRuning =false;try {dis.close();} catch (IOException e1) {// TODO Auto-generated catch blocke1.printStackTrace();}}}/*** * 接收数据 * @return * @throws IOException  */public String receive() throws IOException {String msg = "";try {msg =dis.readUTF();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();isRuning =false;dis.close();}return msg;}@Overridepublic void run() {while(isRuning) {try {System.out.println(receive());} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}

4.效果