server.java

文件上传下载系统源码

package chatserver2;
//Chat Room Server
//this software is designed by Chen Heping(陈和平）

import java.awt.*;
import java.awt.event.*;
import java.io.*;
import java.net.*;

public class ChatRoomServer extends Frame implements Runnable{
 Panel panel;
 ScrollPane sPanel;
 TextArea textArea;
 Button button1;
 
 //net
 ServerSocket serverSock;
 public final static int DEFAULT_PORT=6666;//默认端口号
 Thread chatAcceptThread;//启动接受连接的线程
 BroadcastThread broadcastThread;//广播thread; run when server is listening 
 java.util.Vector clients;//记录连接的线程
 java.util.Vector clientsInfor;//记录连接线程的信息
 public static int index=0;
 
 public ChatRoomServer(){
  try{
   jbInit();
  }catch(Exception e){
   e.printStackTrace();
  }
  serverListen();//服务器开始监听
 }
 
 
 private void jbInit(){//初始化界面
  panel=new Panel();
  sPanel=new ScrollPane();
  textArea=new TextArea("当前服务器信息:\n");
  button1=new Button("退出");
  
  sPanel.add(textArea);
  
  button1.addActionListener(new java.awt.event.ActionListener(){//退出按钮事件
   public void actionPerformed(ActionEvent e){
    button1_actionPerformed(e);
   }
  });
  panel.add(button1);
  
  this.addWindowListener(new ChatFrame_WindowAdapter(this));//注册到继承了窗口适配器的类
  this.setSize(600,500);
  this.setLayout(new BorderLayout());
  this.add(sPanel,BorderLayout.CENTER);
  this.add(panel,BorderLayout.SOUTH);
  this.show();
  
 }
 
 private void button1_actionPerformed(ActionEvent e){
  exit();
 }
 
 public void processMsg(String str){//
  textArea.append(str);
 }
 
 private void serverListen(){
  try{
   serverSock=new ServerSocket(DEFAULT_PORT);
  }catch(IOException e){
   processMsg(e.toString());
   processMsg("服务器启动失败 ！\n");
  }
  processMsg("服务器在监听端口:"+DEFAULT_PORT);
  clients=new java.util.Vector();
  clientsInfor=new java.util.Vector();
  
  chatAcceptThread=new Thread(this);//启动接受连接的线程
  chatAcceptThread.start();
  
  broadcastThread=new BroadcastThread(this);//广播线程
  broadcastThread.start();
  
  //还有一个回收无用连接thread 的线程
 }
  
 public void run(){//接受连接并记录线程信息
  int i=0;
  try{
   while(true){
    Socket clientSock=serverSock.accept();
    CommunicateThread ct=new CommunicateThread(clientSock,this,index);//创建线程保持连接
    clients.add(ct);//记录正通信线程信息;
    i++;
    index++;//version2
    clientsInfor.add("Thread-（用户）"+i);
    processMsg("Thread-（用户）"+i+"加入\n");
    
   }
  }catch(IOException e){
   processMsg(e.toString());
  } 
 }
 
 public void exit(){
  broadcastThread.broadcast("服务器关闭！");
  try{
   serverSock.close();
  }catch(IOException ioe){}
  finally{
   System.exit(0);
  }
 }
 
 public static void main(String[] args){
  ChatRoomServer chat=new ChatRoomServer();
 }
}

class CommunicateThread extends Thread{//保持连接线程
 protected Socket clientSock;
 protected BufferedReader in=null;
 protected PrintWriter out;
 ChatRoomServer chatFrame;
 boolean isTrue=true;//已经运行
 java.util.Vector inforStack;
 int index2;//
 
 public CommunicateThread(Socket Sock,ChatRoomServer cFrame,int index){
  clientSock=Sock;
  chatFrame=cFrame;
  index2=index;
  inforStack=new java.util.Vector();
  try{
   in=new BufferedReader(new InputStreamReader(clientSock.getInputStream()));
   out=new PrintWriter(clientSock.getOutputStream());
  }catch(IOException ei){
   try{
    clientSock.close();
   }catch(IOException ei2){ }
   chatFrame.processMsg(ei.toString());
   return;
  }
  this.start();
 }
 
 public void run(){
  String infor;
  try{
   while(isTrue){
    infor=in.readLine();
    if(infor.equals("Client exit!")){
     writeInformation(infor);//把信息写到信息栈，广播出去
     stopRun();
    }else if(infor!=null){
     writeInformation(infor);
    }//else break;
    try{
     Thread.sleep(100);//version2
    }catch(InterruptedException ex){}
   }
  }catch(IOException e){ ;}
  finally{
   try{
    in.close();
    out.close();
    clientSock.close();
    chatFrame.clients.remove(index2);//在clients中清除本线程序
    ChatRoomServer.index--;//
   }catch(IOException ei){;}
  }
  
 }
 
 public void writeInformation(String infor){//写信息栈
  inforStack.add(infor);
 }
 
 private void stopRun(){//终止线程
  isTrue=false;
 }
 
 public void sendInformation(String str){//发送信息
  try{
   out.println(str);
   out.flush();
  }catch(Exception e){;} 
 }  
}

class BroadcastThread extends Thread{//广播线程
 ChatRoomServer chatFrame2;
 java.util.Vector chatClients;//连接线程信息
 java.util.Vector msgStack;//信息栈
 java.util.Vector clientMsg;//记录客户发送的信息
 CommunicateThread comThread1;
 CommunicateThread comThread2;
 String string;//information in inforStack
 String clientName;//client thread name
 String broadcastInfor;//broadcast information=clientName+string;
 
 public BroadcastThread(ChatRoomServer cFrame){
  chatFrame2=cFrame;
  chatClients=chatFrame2.clients;
  clientMsg=chatFrame2.clientsInfor;
  //this.start();
 }
 
 public void broadcast(String str){//广播  
  for(int k=0;k<chatClients.size();k++){//send to everyone分别调用每个连接线程，发送信息 
   comThread2=(CommunicateThread)chatClients.get(k);
   comThread2.sendInformation(str);
  }
 }
 
 public void run(){
  try{
   while(true){
    for(int i=0;i<chatClients.size();i++){
     comThread1=(CommunicateThread)chatClients.get(i);
     msgStack=comThread1.inforStack;//得到每个连接的信息栈
     clientName=(String)clientMsg.get(i);//客户名 
     //读取每个连接线程的信息栈并把信息发送出去
     for(int j=0;j<msgStack.size();j++){
      string=(String)msgStack.get(j);
      broadcastInfor=clientName+"->"+string;
      broadcast(broadcastInfor);
     }
     //clear the inforStack
     msgStack.removeAllElements();//清除以发送的信息
     
    }
    try{
     Thread.sleep(100);//version2
    }catch(InterruptedException ex){}
   }
  }catch(Exception e){}
 }
 
}

//处理窗口关闭事件的适配器
class ChatFrame_WindowAdapter extends java.awt.event.WindowAdapter{
 ChatRoomServer chatFrame;
 public ChatFrame_WindowAdapter(ChatRoomServer chatFrame){
  this.chatFrame=chatFrame;
 }
 public void windowClosing(WindowEvent e){//exit program
  chatFrame.exit();//reference to the method exit() in ChatRoomServer.
 }
}