java tcp连接_Java基于Tcp/ip连接的多人交互聊天室

本文实例为大家分享了Java  Socket编程实现多人交互聊天室的具体代码，供大家参考，具体内容如下

本项目由三个.java文件(Client.java、Server.java、UI.java)和一个.jpg图片文件组成UI.java是负责界面的构成文件。本聊天室的界面极其简单。主要分为两个界面：第一个是启动时需要登陆的界面如下：

输入名字进去以后就可以直接聊天

 

 

这个聊天室相当于群聊，每一个登陆进去的人发的信息，其他人都会收到。

使用指南：

1.运行Server.java文件，保证服务端的开启

2.运行UI.java文件，界面登陆。每运行一个UI文件并登陆进去，就代表一个客户进了群聊中，可进行对话。

程序简单易懂，非常适合初学者练习网络编程的知识。

Client.java

import java.net.*;

import java.io.*;

import java.util.*;

public class Client{

String name;

Socket s;

UI ui;

//构造方法 ，把UI对象传过来

public Client(UI ui){

this.ui = ui;

}

//从登陆界面获得名字并传去服务端

public void getName(String name){

try{

s = new Socket("127.0.0.1",3000);

Cli1 d = new Cli1(s,ui);

d.start();

this.name = name;

DataOutputStream dos = new DataOutputStream(s.getOutputStream());

dos.writeUTF(name);

}catch(Exception e){

e.printStackTrace();

}

}

//从聊天界面获得要发送的内容并经服务器转发给各个客户端

public void say(String content){

try{

DataOutputStream dos = new DataOutputStream(s.getOutputStream());

dos.writeUTF(content);

}catch(Exception e){

e.printStackTrace();

}

}

}

//输入和输出

class Cli1 extends Thread {

UI ui;

Socket s ;

public Cli1(Socket s,UI ui){

this.s = s;

this.ui=ui;

}

public void run(){

try{

while(true){

DataInputStream dis = new DataInputStream(s.getInputStream());

String content = dis.readUTF();

if(!content.equals("")&&content!=null){

System.out.println(content);

ui.say(content);

}

}

}catch(Exception e){

e.printStackTrace();

}

}

}

Server.java

import java.net.*;

import java.io.*;

import java.util.*;

public class Server{

static Socket s;

static Socket[] soc;

static String[] name;

static int k = 5,i =0,j;

public static void main(String[] args){

Server ser = new Server();

try{

ServerSocket ss = new ServerSocket(3000);

soc = new Socket[k];

name = new String[k];

while(true){

s = ss.accept();

soc[i]= s;

j=i;

i++;

DataOutputStream dos = new DataOutputStream(s.getOutputStream());

DataInputStream dis = new DataInputStream(s.getInputStream());

name[j] = dis.readUTF();

System.out.println(name[j]+"已进入群聊！");

dos.writeUTF("欢迎你，"+name[j]);

new Ser1().start();

}

}catch(ConnectException e){

System.out.println("连接异常！！");

}catch(IOException e){

e.printStackTrace();

}

}

}

class Ser1 extends Thread{

public int j;

public void run(){

try{

DataInputStream read = new DataInputStream((Server.soc[Server.j]).getInputStream());

j=Server.j;

while(true){

String con = read.readUTF();

if(con!=null){

System.out.println("该线程j为"+j);

for(int i = 0;i

if((i!=j)&&(Server.soc[i]!=null)){

DataOutputStream dos = new DataOutputStream((Server.soc[i]).getOutputStream());

dos.writeUTF(Server.name[Server.j]+"发送于 "+(new Date()));

dos.writeUTF(con);

}

}

}else{break;}

}

}catch(Exception e){

e.printStackTrace();

}

}

}

UI.java

import java.awt.*;

import javax.swing.*;

import java.awt.event.*;

public class UI{

//主方法

public static void main(String[] args){

UI ui = new UI();

ui.cli = new Client(ui);

ui.initFrame();

ui.showLogin();

}

Ser1 ser1 = new Ser1();

//初始化业务对象

public Client cli = null;

public void initCli(){

}

//初始化主窗口

public int width = 720;

public int height = 550;

public JFrame jFrame = null; //界面窗口

public JLayeredPane layeredPane = null; //层叠容器

public JPanel backLayer = null; //背景层

public JPanel frontLayer = null; //前景层

public CardLayout cardLayout = null; //前景层布局器

public void initFrame(){

jFrame = new JFrame("老友聚乐部");

layeredPane = new JLayeredPane();

layeredPane.setPreferredSize(new Dimension(width, height));

jFrame.add(layeredPane);

jFrame.setResizable(false);

jFrame.pack();

jFrame.setVisible(true);

jFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

backLayer = new JPanel();

((FlowLayout)backLayer.getLayout()).setHgap(0);

((FlowLayout)backLayer.getLayout()).setVgap(0);

backLayer.setSize(width,height);

backLayer.setLocation(0,0);

JLabel bg = new JLabel(new ImageIcon("12.jpg"));

backLayer.add(bg);

layeredPane.add(backLayer,new Integer(0));

frontLayer = new JPanel();

cardLayout = new CardLayout(0,0);

frontLayer.setLayout(cardLayout);

frontLayer.setOpaque(false);

frontLayer.setSize(width,height);

frontLayer.setLocation(0,0);

layeredPane.add(frontLayer,new Integer(1));

}

//登录界面

public JPanel loginPane = null;

public JTextField loginCodeInput = null;

public JLabel loginTipsLabel = null;

public void showLogin(){

if(loginPane == null){

loginPane = new JPanel();

loginPane.setOpaque(false);

Box loginBox = Box.createVerticalBox();

loginBox.add(Box.createVerticalStrut(180));

JPanel welcome_panel = new JPanel();

welcome_panel.setOpaque(false);

JLabel welcome_label = new JLabel("老友俱乐部");

welcome_label.setForeground(Color.WHITE);

welcome_label.setFont(new Font("微软雅黑",Font.PLAIN,30));

welcome_panel.add(welcome_label);

loginBox.add(welcome_panel);

loginBox.add(Box.createVerticalStrut(50));

JPanel code_panel = new JPanel();

code_panel.setOpaque(false);

JLabel code_label = new JLabel("姓名：");

code_label.setForeground(Color.WHITE);

code_label.setFont(new Font("微软雅黑",Font.PLAIN,25));

code_panel.add(code_label);

loginCodeInput = new JTextField(10);

loginCodeInput.setFont(new Font("微软雅黑", Font.PLAIN,25));

code_panel.add(loginCodeInput);

loginBox.add(code_panel);

loginBox.add(Box.createVerticalStrut(30));

JPanel btn_panel = new JPanel();

btn_panel.setOpaque(false);

JButton login_btn = new JButton("登 录");

login_btn.setFont(new Font("微软雅黑",Font.PLAIN,15));

btn_panel.add(login_btn);

JButton reset_btn = new JButton("重 置");

reset_btn.setFont(new Font("微软雅黑",Font.PLAIN,15));

btn_panel.add(reset_btn);

loginBox.add(btn_panel);

loginBox.add(Box.createVerticalStrut(10));

JPanel tips_panel = new JPanel();

tips_panel.setOpaque(false);

loginTipsLabel = new JLabel("");

loginTipsLabel.setForeground(new Color(238,32,32));

loginTipsLabel.setFont(new Font("微软雅黑",Font.PLAIN,20));

tips_panel.add(loginTipsLabel);

loginBox.add(tips_panel);

loginPane.add(loginBox);

frontLayer.add("loginPane",loginPane);

cardLayout.show(frontLayer,"loginPane");

frontLayer.validate();

loginCodeInput.requestFocus();

reset_btn.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

loginCodeInput.setText("");

loginTipsLabel.setText("");

loginCodeInput.requestFocus();

}

});

login_btn.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

String code_str = loginCodeInput.getText();

if("".equals(code_str)){

loginTipsLabel.setText("姓名不能为空！");

loginCodeInput.requestFocus();

}else{

cli.getName(code_str);

showTalk();

}

}

});

}else{

cardLayout.show(frontLayer,"loginPane");

loginCodeInput.setText("");

loginTipsLabel.setText("");

loginCodeInput.requestFocus();

}

}

//聊天主界面

public JPanel menuPane = null;

public JTextArea input = null;

public JTextArea talk = new JTextArea(25,70);

public void showTalk(){

menuPane = new JPanel();

menuPane.setOpaque(false);

menuPane.setLayout(new BorderLayout());

JPanel up = new JPanel();

Box tipsBox = Box.createVerticalBox();

menuPane.add(up,BorderLayout.NORTH); //北边顶上

up.add(tipsBox);

JLabel tips_label = new JLabel("在线朋友");

tips_label.setForeground(Color.WHITE);

tips_label.setFont(new Font("微软雅黑",Font.PLAIN,20));

tips_label.setAlignmentX(Component.LEFT_ALIGNMENT);

tipsBox.add(tips_label);

tipsBox.add(Box.createVerticalStrut(10));

JLabel upTxt = new JLabel(""); //接收在线朋友(需完善)

tipsBox.add(upTxt);

JPanel talk_panel = new JPanel();//中间聊天对话框

talk_panel.setOpaque(false);

menuPane.add(talk_panel,BorderLayout.WEST);

JScrollPane sp = new JScrollPane(talk);

talk_panel.add(talk);

Box inputBox = Box.createHorizontalBox(); //下边输入框

menuPane.add(inputBox,BorderLayout.SOUTH);

JPanel input_panel = new JPanel();

input_panel.setOpaque(false); //放置输入框

input = new JTextArea(4,30);

input.setFont(new Font("微软雅黑",Font.PLAIN,20));

input.setAlignmentX(Component.LEFT_ALIGNMENT);

input_panel.add(input);

inputBox.add(input_panel);

inputBox.add(Box.createHorizontalStrut(0));

JButton send_btn = new JButton("发送");

send_btn.setFont(new Font("微软雅黑",Font.PLAIN,15));

inputBox.add(send_btn);

frontLayer.add("menuPane",menuPane);

cardLayout.show(frontLayer,"menuPane");

frontLayer.validate();

send_btn.addActionListener(new ActionListener(){

public void actionPerformed(ActionEvent ae){

String append = talk.getText();

String content = input.getText();

talk.setText(append+'\n'+content);

input.setText("");

cli.say(content);

}

});

}

public void say(String content){

if(talk!=null){

String append = talk.getText();

talk.setText(append+'\n'+content);

}

}

}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。