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<server.soc.length;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。