chatclientframe.java

Java实例入门

package simplechatclient;

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

/**
 * Title:        聊天小程序
 * Description:  这是一个使用SOCKET制作的网络聊天程序
 * Copyright:    Copyright (c) 2001
 * Company:
 * @author
 * @version 1.0
 */

public class ChatClientFrame extends JFrame {
  JPanel contentPane;
  JLabel statusBar = new JLabel();
  BorderLayout borderLayout1 = new BorderLayout();
  JPanel jPanelHost = new JPanel();
  JLabel jLabel1 = new JLabel();
  JTextField txtHostAdd = new JTextField();
  JLabel jLabel2 = new JLabel();
  JTextField txtSerPort = new JTextField();
  JButton cmdCon = new JButton();
  JPanel jPanelMain = new JPanel();
  GridLayout gridLayout1 = new GridLayout();
  JPanel jPanelInput = new JPanel();
  BorderLayout borderLayout2 = new BorderLayout();
  JScrollPane jScrollPaneInput = new JScrollPane();
  TitledBorder titledBorder1;
  JLabel jLabel3 = new JLabel();
  JLabel jLabel4 = new JLabel();
  JTextArea txtInput = new JTextArea();
  JPanel jPanelSend = new JPanel();
  JButton cmdSend = new JButton();
  JTextArea txtMsg = new JTextArea();
  JScrollPane jScrollPaneMsg = new JScrollPane();
  ChatSocket currencyChat;
  Border border1;
  TitledBorder titledBorder2;

  /**Construct the frame*/
  public ChatClientFrame() {
    enableEvents(AWTEvent.WINDOW_EVENT_MASK);
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }
  /**Component initialization*/
  private void jbInit() throws Exception  {
    //setIconImage(Toolkit.getDefaultToolkit().createImage(ChatFrame.class.getResource("[Your Icon]")));
    contentPane = (JPanel) this.getContentPane();
    titledBorder1 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(134, 134, 134)),"需要发送的信息");
    border1 = BorderFactory.createEmptyBorder();
    titledBorder2 = new TitledBorder(BorderFactory.createEtchedBorder(Color.white,new Color(134, 134, 134)),"日志");
    contentPane.setLayout(borderLayout1);
    this.setSize(new Dimension(421, 399));
    this.setTitle("网络聊天客户端程序");
    statusBar.setText(" ");
    jLabel1.setText("请输入服务器地址:");
    txtHostAdd.setColumns(10);
    jLabel2.setToolTipText("");
    jLabel2.setText("端口:");
    txtSerPort.setColumns(5);
    cmdCon.setText("Connect");
    cmdCon.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        cmdCon_actionPerformed(e);
      }
    });
    jPanelMain.setLayout(gridLayout1);
    gridLayout1.setRows(2);
    gridLayout1.setColumns(1);
    gridLayout1.setHgap(1);
    jPanelInput.setLayout(borderLayout2);
    jScrollPaneInput.setBorder(titledBorder1);
    jLabel3.setText(" ");
    jLabel4.setText(" ");
    cmdSend.setText("发送");
    cmdSend.addActionListener(new java.awt.event.ActionListener() {
      public void actionPerformed(ActionEvent e) {
        cmdSend_actionPerformed(e);
      }
    });
    jScrollPaneMsg.setBorder(titledBorder2);
    txtMsg.setEditable(false);
    contentPane.add(statusBar, BorderLayout.SOUTH);
    contentPane.add(jPanelHost, BorderLayout.NORTH);
    jPanelHost.add(jLabel1, null);
    jPanelHost.add(txtHostAdd, null);
    jPanelHost.add(jLabel2, null);
    jPanelHost.add(txtSerPort, null);
    jPanelHost.add(cmdCon, null);
    contentPane.add(jPanelMain, BorderLayout.CENTER);
    jPanelMain.add(jPanelInput, null);
    jPanelInput.add(jScrollPaneInput, BorderLayout.CENTER);
    jPanelInput.add(jLabel3,  BorderLayout.WEST);
    jPanelInput.add(jLabel4,  BorderLayout.EAST);
    jPanelInput.add(jPanelSend,  BorderLayout.SOUTH);
    jScrollPaneInput.getViewport().add(txtInput, null);
    jPanelSend.add(cmdSend, null);
    jPanelMain.add(jScrollPaneMsg, null);
    jScrollPaneMsg.getViewport().add(txtMsg,null);
  }
  /**Overridden so we can exit when window is closed*/
  protected void processWindowEvent(WindowEvent e) {
    super.processWindowEvent(e);
    if (e.getID() == WindowEvent.WINDOW_CLOSING) {
      System.exit(0);
    }
  }

  void cmdCon_actionPerformed(ActionEvent e) {
    if(cmdCon.getText().equals("Connect")){
       if(currencyChat!=null)  {
           currencyChat.disConnect();
           currencyChat=null;
        }
       int port=Integer.parseInt(txtSerPort.getText().trim());
        currencyChat=new ChatSocket(txtHostAdd.getText().trim(),port);
        currencyChat.setOutTextComponent(txtMsg);
        if(currencyChat.connect()){
           statusBar.setText("连接服务器"+txtHostAdd.getText().trim()+":"+port+"成功！") ;
         }
        else{
           statusBar.setText("连接服务器"+txtHostAdd.getText().trim()+":"+port+"成功！") ;
         }
         txtMsg.setText(txtMsg.getText()+statusBar.getText()+"\n");
         cmdCon.setText("Disconnect");
    }else{
       if(currencyChat!=null)  {
           currencyChat.disConnect();
           currencyChat=null;
        }
        statusBar.setText("关闭连接") ;
        txtMsg.setText(txtMsg.getText()+"关闭连接\n");
        cmdCon.setText("Connect");
    }
  }

  void cmdSend_actionPerformed(ActionEvent e) {
    if(currencyChat!=null)  {
       synchronized(this){
           String result=(currencyChat.send(txtInput.getText().trim())?"成功":"失败");
           txtMsg.setText(txtMsg.getText()+"发送 :"+txtInput.getText().trim()+"\n"+result+"\n");
       }
    }
  }
}