chatroomclient.java

socket 套接字 共计算机网络实验

/*
 * Cient.java
 *
 * Created on 2008年4月1日, 下午4:42
 */

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


    
/**
 *
 * @author  Owner
 */
public class  ChatRoomClient extends javax.swing.JFrame implements Runnable {
 PrintWriter out;
 BufferedReader in=null;
 Socket sock;
 public final static int DEFAULT_PORT=6666; 
 
                                      //create Thread to Read information from Server
 Thread readThread;
 boolean isTrue=true;                 //thread can go on runing ??
    /** Creates new form Cient */
    public  ChatRoomClient() {
      try{
   initComponents();
  }catch(Exception e){
   e.printStackTrace();
  }
        }

   public void sendInformation() {
       out.println(jTextField2.getText());
      out.flush();
    }

    public void exit() {
       try{//send "Client exit!" to Server!
   out.println("Client exit!");
   out.flush();
  }catch(Exception exc){}
  //endConnect();
  try{//close IOstream 
   sock.close();
   in.close();
   out.close();
  }catch(IOException ioe){}
  finally{ 
   System.exit(0);
  }
    }
    
    /** This method is called from within the constructor to
     * initialize the form.
     * WARNING: Do NOT modify this code. The content of this method is
     * always regenerated by the Form Editor.
     */
    // <editor-fold defaultstate="collapsed" desc="Generated Code">//GEN-BEGIN:initComponents
    private void initComponents() {

        jPanel2 = new javax.swing.JPanel();
        jButton2 = new javax.swing.JButton();
        jLabel1 = new javax.swing.JLabel();
        jTextField2 = new javax.swing.JTextField();
        jPanel1 = new javax.swing.JPanel();
        jButton1 = new javax.swing.JButton();
        jTextField1 = new javax.swing.JTextField();
        jScrollPane1 = new javax.swing.JScrollPane();
        jTextArea1 = new javax.swing.JTextArea();

        setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
        addWindowListener(new java.awt.event.WindowAdapter() {
            public void windowActivated(java.awt.event.WindowEvent evt) {
                formWindowActivated(evt);
            }
        });

        jPanel2.setPreferredSize(new java.awt.Dimension(50, 50));
        jPanel2.setVerifyInputWhenFocusTarget(false);

        jButton2.setText("发送");
        jButton2.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton2ActionPerformed(evt);
            }
        });

        jLabel1.setText("消息");

        org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
        jPanel2.setLayout(jPanel2Layout);
        jPanel2Layout.setHorizontalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel2Layout.createSequentialGroup()
                .addContainerGap()
                .add(jLabel1)
                .add(18, 18, 18)
                .add(jTextField2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 238, Short.MAX_VALUE)
                .add(18, 18, 18)
                .add(jButton2)
                .addContainerGap())
        );
        jPanel2Layout.setVerticalGroup(
            jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel2Layout.createSequentialGroup()
                .addContainerGap(17, Short.MAX_VALUE)
                .add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jTextField2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jLabel1)
                    .add(jButton2))
                .addContainerGap())
        );

        getContentPane().add(jPanel2, java.awt.BorderLayout.PAGE_END);

        jButton1.setText("连接");
        jButton1.addActionListener(new java.awt.event.ActionListener() {
            public void actionPerformed(java.awt.event.ActionEvent evt) {
                jButton1ActionPerformed(evt);
            }
        });

        jTextField1.setText("input Server address here!");

        org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .add(28, 28, 28)
                .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 246, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 30, Short.MAX_VALUE)
                .add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 61, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                .addContainerGap())
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
            .add(jPanel1Layout.createSequentialGroup()
                .add(jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.BASELINE)
                    .add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 23, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
                    .add(jButton1))
                .addContainerGap(12, Short.MAX_VALUE))
        );

        getContentPane().add(jPanel1, java.awt.BorderLayout.PAGE_START);

        jScrollPane1.setPreferredSize(new java.awt.Dimension(122, 333));
        jScrollPane1.setRequestFocusEnabled(false);

        jTextArea1.setColumns(20);
        jTextArea1.setRows(5);
        jTextArea1.setPreferredSize(new java.awt.Dimension(120, 190));
        jScrollPane1.setViewportView(jTextArea1);

        getContentPane().add(jScrollPane1, java.awt.BorderLayout.CENTER);

        pack();
    }// </editor-fold>//GEN-END:initComponents

    private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
       startConnect(); // TODO add your handling code here:
    }//GEN-LAST:event_jButton1ActionPerformed

    private void jButton2ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton2ActionPerformed
        sendInformation(); // TODO add your handling code here:
    }//GEN-LAST:event_jButton2ActionPerformed

    private void formWindowActivated(java.awt.event.WindowEvent evt) {//GEN-FIRST:event_formWindowActivated
this.addWindowListener(new ChatFrame_WindowAdapter(this));        // TODO add your handling code here:
    }//GEN-LAST:event_formWindowActivated

    public void processMsg(String msg) {
  jTextArea1.append(msg);
  jTextArea1.append("\n");
    }

    public void startConnect() {
       try{
   sock=new Socket(jTextField1.getText(),DEFAULT_PORT);
   if(sock!=null){//connection successed
    processMsg("Connect successfully!");
   }
   in=new BufferedReader(new InputStreamReader(sock.getInputStream()));
   out=new PrintWriter(sock.getOutputStream());
  }catch(IOException ex){
   processMsg(ex.toString());
   processMsg("Connect failed!");
  }
  
  readThread=new Thread(this);
  readThread.start(); 
    }

   

  

public void run(){
   String msg;
  isTrue=true;
  while(isTrue){
   try{
    msg=in.readLine();
    if(msg!=null){
     processMsg(msg);
    }
    Thread.sleep(1000);    
   }catch(IOException e){
    processMsg(e.toString());
   }catch(InterruptedException ei){
    processMsg(ei.toString());
   }
  }
  //endConnect();
  try{//服务器退出关闭连接和相关的"流"
   sock.close();
   in.close();
   out.close();
  }catch(IOException ioe){} 
 }

    /**
     * @param args the command line arguments
     */
    public static void main(String args[]) {
     ChatRoomClient c=new ChatRoomClient();
c.show();
        
    }
   
 
 

    
    
    // Variables declaration - do not modify//GEN-BEGIN:variables
    private javax.swing.JButton jButton1;
    private javax.swing.JButton jButton2;
    private javax.swing.JLabel jLabel1;
    private javax.swing.JPanel jPanel1;
    private javax.swing.JPanel jPanel2;
    private javax.swing.JScrollPane jScrollPane1;
    private javax.swing.JTextArea jTextArea1;
    private javax.swing.JTextField jTextField1;
    private javax.swing.JTextField jTextField2;
    // End of variables declaration//GEN-END:variables
}



 class ChatFrame_WindowAdapter extends java.awt.event.WindowAdapter{
 ChatRoomClient chatFrame;
 public ChatFrame_WindowAdapter(ChatRoomClient chatFrame){
  this.chatFrame=chatFrame;
 }
    @Override
 public void windowClosing(WindowEvent e){//exit program
  chatFrame.exit();//reference to the method exit() in ChatRoomClient.
 }
}