java利用Socket实现聊天室功能实例

最近研究了下java socket通信基础，利用代码实现了一个简单的多人聊天室功能，现把代码共享下，希望能帮到有兴趣了解的人。

目录结构：

chatclient:

package com.panda.chat; 
 
import java.awt.*; 
import java.awt.event.*; 
import java.io.*; 
import java.net.*; 
 
@suppresswarnings("serial") 
public class chatclient extends frame { 
 private textarea ta = new textarea(); 
 private textfield tf = new textfield(); 
 private dataoutputstream dos = null; 
 private datainputstream dis = null; 
 private socket socket = null; 
 private boolean bconnected = false; 
 private thread thread=null; 
 public static void main(string[] args) { 
  new chatclient().frameclient(); 
 } 
 public void frameclient(){ 
  setsize(400, 400); 
  setlocation(400,300); 
  add(ta,borderlayout.north); 
  add(tf,borderlayout.south); 
  pack(); 
  tf.addactionlistener(new tflistener()); 
  //关闭窗口事件监听 
  this.addwindowlistener(new windowadapter() { 
   @override 
   public void windowclosing(windowevent e) { 
    disconnected(); 
    system.exit(0); 
   } 
  }); 
  this.connect(); 
  setvisible(true); 
 } 
 //链接服务器地址 
 private void connect(){ 
  try { 
   socket = new socket("127.0.0.1", 8888); 
   thread=new thread(new chatthread()); 
   thread.start(); 
   dos = new dataoutputstream(socket.getoutputstream()); 
   dis = new datainputstream(socket.getinputstream()); 
  } catch (unknownhostexception e) { 
   // todo auto-generated catch block 
   e.printstacktrace(); 
  } catch (ioexception e) { 
   // todo auto-generated catch block 
   e.printstacktrace(); 
  } 
 } 
 //断开连接 
 private void disconnected(){ 
  bconnected = false; 
  try { 
   dos.close(); 
   dis.close(); 
   socket.close(); 
  } catch (ioexception e1) { 
   // todo auto-generated catch block 
   e1.printstacktrace(); 
  } 
 } 
 //键盘回车事件 
 private class tflistener implements actionlistener{ 
 
  @override 
  public void actionperformed(actionevent e) { 
   string strmsg = tf.gettext(); 
   tf.settext(""); 
   try { 
    dos.writeutf(strmsg); 
    dos.flush(); 
   } catch (ioexception e1) { 
    // todo auto-generated catch block 
    e1.printstacktrace(); 
   } 
  } 
   
 } 
 //开启线程接受服务器信息 
 private class chatthread implements runnable{ 
  @override 
  public void run() { 
   try { 
    bconnected = true; 
    while(bconnected){ 
     string msg = dis.readutf(); 
     string tatext = ta.gettext(); 
     ta.settext(tatext+msg+"\n"); 
    } 
   } catch (socketexception e) { 
    system.out.println("退出");; 
   } catch (ioexception e) { 
    e.printstacktrace(); 
   } 
  } 
 } 
} 

chatserver:

package com.panda.chat; 
 
import java.io.*; 
import java.net.*; 
import java.util.*; 
 
public class chatserver { 
 private boolean started = false; 
 private list<chatthread> chatthreads = new arraylist<chatthread>(); 
 public static void main(string[] args) { 
  new chatserver().startserver(); 
 } 
 private void startserver(){ 
  try { 
   //开启服务端socket 
   serversocket seso = new serversocket(8888); 
   started = true; 
   while(started){ 
    //接受客户端连接请求 
    socket sos = seso.accept(); 
    system.out.println("一个客户端已连接"); 
    //开启线程处理客户端通信 
    chatthread ct = new chatthread(sos); 
    chatthreads.add(ct); 
    new thread(ct).start(); 
   } 
  } catch (ioexception e) { 
   e.printstacktrace(); 
  } 
 } 
 private class chatthread implements runnable{ 
  private socket socket; 
  private datainputstream din=null; 
  private dataoutputstream don=null; 
  private boolean bconnected = false; 
  public chatthread(socket socket) { 
   super(); 
   this.socket = socket; 
  } 
  //发送信息的函数 
  private void send(string strmsgin){ 
   try{ 
    don.writeutf(strmsgin); 
    don.flush(); 
   }catch(ioexception e){ 
    e.printstacktrace(); 
   } 
  } 
  @override 
  public void run() { 
   try{ 
    din = new datainputstream(socket.getinputstream()); 
    don = new dataoutputstream(socket.getoutputstream()); 
    //读取数据 
    bconnected = true; 
    while(bconnected){ 
     string strmsgin = din.readutf(); 
     system.out.println(strmsgin); 
     //接收到数据后发送给每个客户端 
     for(int i =0;i<chatthreads.size();i++){ 
      chatthreads.get(i).send(strmsgin); 
     } 
    } 
   }catch (ioexception e) { 
    try { 
     //如果客户端出错或关闭，直接关闭连接，并移除list中的当前线程 
     socket.close(); 
     chatthreads.remove(this); 
    } catch (ioexception e1) { 
     // todo auto-generated catch block 
     e1.printstacktrace(); 
    } 
   } finally{ 
    try { 
     din.close(); 
     don.close(); 
     socket.close(); 
    } catch (ioexception e) { 
     // todo auto-generated catch block 
     e.printstacktrace(); 
    } 
   } 
  } 
  
 } 
} 

运行chatsever后，再同时打开多次chatclient，就可以实现多人聊天了，你也试试。

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