编写客户端与服务器端通信的功能,要求在任意时间都可以进行收发信息的操作,两个CMD控制台实现

[feversteven]

用网络编程和多线程来实现 具体代码怎么写啊?现在有一些零碎的代码在脑子里,就是没有逻辑,不知道如何组织,哪位大侠贴下完整的代码吧

[feversteven]

先谢谢上面两位仁兄了,可是2楼的仁兄没有实现多线程...4楼的仁兄是图形界面的..用控制台就好~~

[xdop]

先把所谓“零碎的代码”贴出来，说不定会引到砖呢

[jinxfei]

Server:

/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */ 

import java.net.*;
import java.io.*;

public class SockServer {
    public static void main(String[] args) throws IOException {

        ServerSocket serverSocket = null;
        try {
            serverSocket = new ServerSocket(9876);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 9876.");
            System.exit(1);
        }

        Socket clientSocket = null;
        try {
            clientSocket = serverSocket.accept();
        } catch (IOException e) {
            System.err.println("Accept failed.");
            System.exit(1);
        }

        PrintWriter out = new PrintWriter(clientSocket.getOutputStream(), true);
        BufferedReader in = new BufferedReader(
				new InputStreamReader(
				clientSocket.getInputStream()));
        String inputLine, outputLine;
        SockProcesser kkp = new SockProcesser();

        outputLine = kkp.processInput(null);
        out.println(outputLine);

        while ((inputLine = in.readLine()) != null) {
             outputLine = kkp.processInput(inputLine);
             out.println(outputLine);
             if (outputLine.equals("Bye."))
                break;
        }
        out.close();
        in.close();
        clientSocket.close();
        serverSocket.close();
    }
}


class SockProcesser {
    private static final int WAITING = 0;
    private static final int SENTKNOCKKNOCK = 1;
    private static final int SENTCLUE = 2;
    private static final int ANOTHER = 3;

    private static final int NUMJOKES = 5;

    private int state = WAITING;
    
    public String processInput(String theInput) {
        return "I am server, you said:"+theInput;
    }
}

[jinxfei]

client

/*
 * Copyright (c) 1995 - 2008 Sun Microsystems, Inc.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 *   - Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *
 *   - Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *
 *   - Neither the name of Sun Microsystems nor the names of its
 *     contributors may be used to endorse or promote products derived
 *     from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */ 

import java.io.*;
import java.net.*;

public class EchoClient {
    public static void main(String[] args) throws IOException {

        Socket echoSocket = null;
        PrintWriter out = null;
        BufferedReader in = null;

        try {
            echoSocket = new Socket("localhost", 9876);
            out = new PrintWriter(echoSocket.getOutputStream(), true);
            in = new BufferedReader(new InputStreamReader(
                                        echoSocket.getInputStream()));
        } catch (UnknownHostException e) {
            System.err.println("Don't know about host: localhost.");
            System.exit(1);
        } catch (IOException e) {
            System.err.println("Couldn't get I/O for "
                               + "the connection to: localhost.");
            System.exit(1);
        }

	BufferedReader stdIn = new BufferedReader(
                                   new InputStreamReader(System.in));
	String userInput;
System.out.println("请输入信息：");
	while ((userInput = stdIn.readLine()) != null) {
	    out.println(userInput);
	    System.out.println("server: " + in.readLine());
	}

	out.close();
	in.close();
	stdIn.close();
	echoSocket.close();
    }
}

[s278777851]

大一时候的没事时做的，比较简单，同时开两个，先登陆的那个就是做服务器。。。希望对你有用

package chatSystemPak;

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

public class ChatSystem extends JFrame{

  JPanel mainPanel;
  JPanel panel1,panel2,panel3;
  JLabel yourName,myName;
  JButton btnSend;
  JTextArea textAreal;
  JTextArea textArea2;
  JScrollPane scrollPane1;
  JScrollPane inputScrollPane;
  JButton btnConnect,btnSave,btnClose;

  String myNickname,yourNickname;
  boolean chgFlag;
  public boolean hasClient;
  public boolean hasServer;

  ServerThread srvThread;                        //定义两个线程
  ClientThread cltThread;

  ChatSystem()                                   //构造函数
  {
    textAreal = new JTextArea();
    textArea2 = new JTextArea();
  }

  public static void main(String argv[])         //主函数
  {
    final ChatSystem frame = new ChatSystem();
    frame.setTitle("聊天系统");
    try
    {
      UIManager.setLookAndFeel("com.sun.java.swing.plaf.motif.MotifLookAndFeel");
    }
    catch(Exception e1)
    {
      e1.printStackTrace();
    }
    frame.myNickname = JOptionPane.showInputDialog(frame,"请输入你昵称：","");
    if((frame.myNickname == null)||(frame.myNickname.equals("")))
    {
      System.exit(0);
    }


    frame.chgFlag = false;
    frame.setDefaultCloseOperation(frame.DO_NOTHING_ON_CLOSE);
    frame.addWindowListener(new WindowAdapter(){
      public void windowClosing(WindowEvent e2)
      {
        frame.confirmClose();
      }
    });

    frame.addComponent();
    frame.pack();
    frame.setVisible(true);
    frame.hasServer = false;
    frame.hasClient = false;
    frame.srvThread = new ServerThread("ServerThread",frame);
    frame.srvThread.start();
  }                                             //主函数结束的地方

public void addComponent()
{
  mainPanel = new JPanel();
  mainPanel.setLayout(new BoxLayout(mainPanel,BoxLayout.PAGE_AXIS));
  getContentPane().add(mainPanel);
  panel1 = new JPanel();
  panel2 = new JPanel();
  panel3 = new JPanel();

  yourName = new JLabel("对方的昵称： ");
  myName = new JLabel("我的昵称： " +myNickname);
  panel1.setLayout(new GridLayout(0,2));
  panel1.add(yourName);
  panel1.add(myName);

  textArea2 = new JTextArea(6,40);
  textArea2.setEditable(true);
  textArea2.setFont(new Font("隶书",Font.BOLD,20));
  textArea2.setCaretColor(Color.BLUE);
  textArea2.setForeground(Color.ORANGE);
  textArea2.setLineWrap(true);
  textArea2.setWrapStyleWord(true);
  inputScrollPane = new JScrollPane(textArea2,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

  btnSend = new JButton("发送");
  btnSend.addActionListener(new ChatActionListenerClass(this));
  btnSend.setActionCommand("发送");

  textAreal = new JTextArea(6,40);
  textAreal.setEditable(false);
  textAreal.setLineWrap(true);
  textAreal.setFont(new Font("隶书",Font.BOLD,20));
  textAreal.setForeground(Color.orange);
  textAreal.setWrapStyleWord(true);
  scrollPane1 = new JScrollPane(textAreal,JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED,JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);

  btnConnect = new JButton("连接");
  btnSave = new JButton("保存");
  btnClose = new JButton("关闭");

  btnConnect.addActionListener(new ChatActionListenerClass(this));
  btnSave.addActionListener(new ChatActionListenerClass(this));
  btnClose.addActionListener(new ChatActionListenerClass(this));
  btnConnect.setActionCommand("连接");
  btnSave.setActionCommand("保存");
  btnClose.setActionCommand("关闭");

  panel3 = new JPanel();
  panel3.setLayout(new FlowLayout(FlowLayout.CENTER,15,5));

  panel3.add(btnConnect);
  panel3.add(btnSave);
  panel3.add(btnClose);
  panel3.add(btnSend);

  inputScrollPane.setBorder(BorderFactory.createEtchedBorder(Color.BLACK,Color.BLACK));
  scrollPane1.setBorder(BorderFactory.createEtchedBorder(Color.black,Color.black));

  mainPanel.add(panel1);
  mainPanel.add(scrollPane1);
  mainPanel.add(Box.createRigidArea(new Dimension(15,15)));
  mainPanel.add(inputScrollPane);
  mainPanel.add(panel3);
}

void confirmClose()                            //弹出询问是否要保存聊天记录的对话框
{
  if(chgFlag)
  {
    int returnValue = JOptionPane.showConfirmDialog(null,"聊天记录还未保存，是否保存？","保存记录",JOptionPane.YES_NO_CANCEL_OPTION);
    if(returnValue == JOptionPane.YES_OPTION)
    {
      boolean saveFlag = saveFile();
      if(saveFlag)
      {
        System.exit(0);
      }
    }
    else if(returnValue == JOptionPane.NO_OPTION)
    {
      System.exit(0);
    }
  }
  else
  {
    System.exit(0);
  }

}

boolean saveFile()   //保存聊天记录的函数
{
  JFileChooser fc = new JFileChooser();
  fc.setDialogType(JFileChooser.SAVE_DIALOG);
  int rtnValue = fc.showOpenDialog(this);
  if(rtnValue == JFileChooser.APPROVE_OPTION)
  {
    try
    {
      File file1 = fc.getSelectedFile();
      FileWriter writer1 = new FileWriter(file1);
      writer1.write(textAreal.getText());
      writer1.close();
      return true;
    }
    catch(IOException ioe)
    {
      return false;
    }

  }
  else
  {
    return false;
  }
}

[s278777851]

接上面

  public void chatActionPerformed(ActionEvent e)           //事件监听类的具体实现
  {
    if(("输入文字".equals(e.getActionCommand()))||("发送".equals(e.getActionCommand())))
    {
      String strText = textArea2.getText();
      addText(myNickname, strText);
      sendMessage(strText);
    }
    else if("连接".equals(e.getActionCommand()))
    {
      cltThread = new ClientThread("ClientThread",this);
      cltThread.start();
    }
    else if("保存".equals(e.getActionCommand()))
    {
      boolean saveFlag = saveFile();
      if(saveFlag)
      {
        chgFlag = false;
      }
    }
    else if("关闭".equals(e.getActionCommand()))
    {
      confirmClose();
    }
  }

  void addText(String nickname,String strText)
  {
    java.util.Date d = new java.util.Date();
    textAreal.append("  "+nickname+":  "+d.getHours()+":"+d.getMinutes()+":"+d.getSeconds()+"\n  "+strText+"\r\n");
    textArea2.replaceRange("",0,textArea2.getSelectionEnd());
    chgFlag = true;
    //text1.selectAll();
    textAreal.setCaretPosition(textAreal.getDocument().getLength());
  }

  public void sendMessage(String msg)
  {
    Socket sender;
    if(hasClient)
    {
      sender = cltThread.cltSocket;
    }
    else
    {
      sender = srvThread.connSocket;
    }
    if(sender == null)
    {
      return;
    }
    try
    {
      PrintWriter out = new PrintWriter(sender.getOutputStream(),true);
      out.println(msg);

    }
    catch(IOException ioe)
    {
      ioe.printStackTrace();
    }
  }

}                                                    //主类结束的地方


class ChatActionListenerClass implements ActionListener    //事件监听类
{
  ChatSystem frame;

  ChatActionListenerClass(ChatSystem frame)
  {
    this.frame = frame;
  }

  public void actionPerformed(ActionEvent e)
  {
    frame.chatActionPerformed(e);
  }
}

class ServerThread extends Thread
{
  ServerSocket srvSocket;
  Socket connSocket;
  ChatSystem frame;

  public ServerThread(String str,ChatSystem frame)    //服务器类
  {
    super(str);
    this.frame = frame;
  }

  public void run()
  {
    try
    {
    srvSocket= new ServerSocket(5555);
    while(!frame.hasClient && !frame.hasServer)
    {
      connSocket = srvSocket.accept();
      frame.hasServer = true;
    }
    }
    catch(Exception ste)
    {
      ste.printStackTrace();
    }

    if(frame.hasClient)
    {
      try
      {
        srvSocket.close();

        if (connSocket != null)
        {
          connSocket.close();
        }
      }
      catch(IOException ioe)
      {
        ioe.printStackTrace();
      }
    }
    else
    {
      try
      {
        BufferedReader in = new BufferedReader(new InputStreamReader(connSocket.getInputStream()));
        String inStr;
        frame.yourNickname = in.readLine();
        frame.yourName.setText("对方的昵称：" + frame.yourNickname);
        frame.sendMessage(frame.myNickname);
        while ( (inStr = in.readLine()) != null)
        {
          frame.addText(frame.yourNickname, inStr);
        }
        in.close();
        connSocket.close();
        srvSocket.close();
      }
      catch(IOException ioe)
      {
        ioe.printStackTrace();
      }
    }
  }
}

class ClientThread extends Thread                       //客户端类
{
  ChatSystem frame;
  Socket cltSocket;

  public ClientThread(String str,ChatSystem frame)
  {
    super(str);
    this.frame = frame;
  }

  public void run()
  {
    String hostName;
    hostName = JOptionPane.showInputDialog(frame,"请输入对方电脑的IP地址： ","");
    if((hostName == null) || (hostName.equals("")))
    {
      return;
    }

    try
    {
      cltSocket = new Socket(hostName, 5555);
    }
    catch(IOException ioe)
    {
      ioe.printStackTrace();
      JOptionPane.showMessageDialog(frame,"无法到对方的电脑");
      return;
    }
    frame.hasClient =true;
    frame.sendMessage(frame.myNickname);
    try
    {
      BufferedReader in = new BufferedReader(new InputStreamReader(cltSocket.
          getInputStream()));

      String instr;
      instr = in.readLine();
      frame.yourNickname = instr;
      frame.yourName.setText("对方的昵称： "+instr);
      while((instr = in.readLine()) != null)
      {
        frame.addText(frame.yourNickname,instr);
      }
      in.close();
      cltSocket.close();
    }
    catch(IOException ioe)
    {
      ioe.printStackTrace();
    }
  }
}