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java实现简单聊天软件

时间:2021-05-19 14:14     来源/作者:如果当初早知道

本文为大家分享了java实现简单聊天软件的具体代码,供大家参考,具体内容如下

介绍

这是我自己学习socket时写的,用到了多线程,socket的知识,还有java的io技术,并且做了一个java的ui,废话不多说,先上效果图

java实现简单聊天软件

sendthread

这个类是用来实现数据的发送的,当按键按下时,会调用sendmessage方法

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public class sendthread {
 
 chatwindow chatwindow;
 private string remoteip = "";
 private int port = 0;
 private string message = "";
 
 public sendthread(int port,chatwindow window) {
  chatwindow = window;
 }
 
 public void notrun() {
  inetsocketaddress isa = new inetsocketaddress(remoteip, port);
  try {
   socket socket = new socket();
   socket.connect(isa);
   outputstreamwriter writer = new outputstreamwriter(socket.getoutputstream());
   writer.write(message);
   writer.flush();
   writer.close();
   system.out.println("将数据写入到流中");
  } catch (ioexception e) {
   e.printstacktrace();
  }finally{
   message = "";
  }
 }
 
 public void senmessage(string host,int port,string message){
  remoteip = host;
  this.port = port;
  this.message = message;
  notrun();
 }
 
}

receivethread

这个类实现的功能是维护一个阻塞线程,来对端口进行监听,接受收到的信息,每当收到信息时,都会显示。

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public class receivethread extends thread {
 
 private serversocket server;
 private chatwindow window;
 
 public receivethread(chatwindow window) {
  this.window = window;
  try {
   server = new serversocket(0);
   window.setlocalport(server.getlocalport());
   start();
  } catch (ioexception e) {
   // todo auto-generated catch block
   window.printerror("连接出错");
  }
 }
 
 @override
 public void run() {
  // todo auto-generated method stub
  while(true){
   socket socket;
   try {
    socket = server.accept();
    inputstreamreader reader = new inputstreamreader(socket.getinputstream());
    int c;
    stringbuilder sb = new stringbuilder();
    while((c = reader.read()) != -1){
     sb.append((char)c);
    }
    window.setreceive(sb.tostring());
   } catch (ioexception e) {
    // todo auto-generated catch block
    system.out.println("线程将接受到的数据写入对话框出错");
   }
  }
 }
}

chatwindow

这个类是ui的实现,通过绑定各个按钮的操作来实现别的功能

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public class chatwindow extends jframe {
 
 private jbutton sendbutton;
 private jbutton cancelbutton;
 private jbutton receivebutton;
 private jtextarea receivetext;
 private jtextfield sendtext;
 
 private jlabel localport;
 
 private jtextfield remoteaddress;
 private jtextfield remoteport;
 private sendthread sendthread;
 private receivethread receivethread;
 
 private void guiini(){
  container c = this.getcontentpane();
  c.setlayout(new borderlayout());
  setsize(400, 500);
 
  //第一个panel
  jpanel panel1 = new jpanel(new gridlayout(4, 2));
//  jpanel panel1 = new jpanel(new (4, 2));
  panel1.setsize(400, 75);
  panel1.add(new jlabel("当前机器的ip地址是:"));
  try {
   panel1.add(new jlabel(inetaddress.getlocalhost().gethostaddress()));
  } catch (unknownhostexception e) {
   // todo auto-generated catch block
   panel1.add(new jlabel("当前机器的ip地址是:" + "unknown"));
  }
  panel1.add(new jlabel("当前对话的端口是:"));
  panel1.add(localport = new jlabel(""+0));
  panel1.add(new jlabel("remote host ip address:"));
  remoteaddress = new jtextfield();
  remoteaddress.setcolumns(0);
  panel1.add(remoteaddress);
  panel1.add(new jlabel("remote host port:"));
  remoteport = new jtextfield();
  remoteport.setcolumns(0);
  panel1.add(remoteport);
  c.add(panel1,borderlayout.north);
 
 
  //第二个panel
  jpanel panel2 = new jpanel(new flowlayout(flowlayout.leading));
  panel2.setsize(400,200);
  panel2.add(new jlabel("收到的内容"));
  receivetext = new jtextarea(15,30);
  receivetext.seteditable(false);
  receivetext.setautoscrolls(true);
  jscrollpane jsp = new jscrollpane(receivetext);
  panel2.add(jsp);
  //第三个panel
//  jpanel panel3 = new jpanel(new gridlayout(2, 1));
  panel2.add(new jlabel("请输入发送的内容"));
  sendtext = new jtextfield(30);
  sendtext.setautoscrolls(true);
  panel2.add(sendtext);
  c.add(panel2,borderlayout.center);
  //c.add(panel3);
  //第四个panel
  jpanel panel4 = new jpanel(new gridlayout(1, 0));
  panel4.setsize(400,20);
  receivebutton = new jbutton("开始接受数据");
  sendbutton = new jbutton("发送");
  cancelbutton = new jbutton("取消");
  panel4.add(receivebutton);
  panel4.add(cancelbutton);
  panel4.add(sendbutton);
  c.add(panel4,borderlayout.south);
  //四个面板内容设置完毕
 
  setvisible(true);
  setresizable(false);
  setdefaultcloseoperation(exit_on_close);
 }
 
 private void actionini() {
 
  //键盘动作
  this.addkeylistener(new keylistener() {
 
   @override
   public void keytyped(keyevent e) {
 
   }
 
   @override
   public void keyreleased(keyevent e) {
    // todo auto-generated method stub
    if(e.getkeycode() == keyevent.vk_enter){
     //发送文本
     sendthread.senmessage(remoteaddress.gettext(), integer.parseint(remoteport.gettext()), sendtext.gettext());
     receivetext.settext(receivetext.gettext() + "\n" + "发送:" + sendtext.gettext());
    }
   }
 
   @override
   public void keypressed(keyevent e) {
    // todo auto-generated method stub
 
   }
  });
  //取消按钮的动作
  cancelbutton.addmouselistener(new mouselistener() {
 
   @override
   public void mousereleased(mouseevent e) {
    // todo auto-generated method stub
    sendtext.settext("");
   }
 
   @override
   public void mousepressed(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseexited(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseentered(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseclicked(mouseevent e) {
    // todo auto-generated method stub
 
   }
  });
  sendbutton.addmouselistener(new mouselistener() {
 
   @override
   public void mousereleased(mouseevent e) {
    //发送文本
    sendthread.senmessage(remoteaddress.gettext(), integer.parseint(remoteport.gettext()), sendtext.gettext());
    receivetext.settext(receivetext.gettext() + "发送:" + sendtext.gettext()+ "\n");
   }
 
   @override
   public void mousepressed(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseexited(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseentered(mouseevent e) {
    // todo auto-generated method stub
 
   }
 
   @override
   public void mouseclicked(mouseevent e) {
    // todo auto-generated method stub
 
   }
  });
 }
 
 private void threadini() {
  // todo auto-generated method stub
  sendthread = new sendthread(0, this);
  receivethread = new receivethread(this);
 }
 //构造函数
 public chatwindow() {
  guiini();
  actionini();
  threadini();
 }
 
 public void printerror(string err){
  system.out.println("error occur:" + err);
 }
 
 //回调函数,用于接受从线程中返回的数据
 public void setreceive(string receive){
  receivetext.settext(receivetext.gettext() + "收到:" + receive+ "\n" );
 }
 
 //当接受数据的线程开始工作以后,就调用该回调函数,设置当前聊天窗口使用的端口是哪个
 public void setlocalport(int localporttext){
  localport.settext(""+localporttext);
 }
 
 //放远,这个是整个程序的起点
 public static void main(string[] args) {
  // todo auto-generated method stub
  new chatwindow();
 }
 
}

如何使用

将工程导入到eclipse中以后,运行两次,因为这个程序不属于单例模式,所以可以出现两个窗口,在远程端口,远程地址那个输入框中分别输入另一个窗口中显示的ip和端口号,接下来在输入框中输入要发送的文字就可以了

源码下载:java实现简单聊天软件

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服务器之家。

原文链接:https://blog.csdn.net/im_zhq/article/details/51393012

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