毕业设计 - 基于Java的聊天室系统设计与实现【源码+论文】

谁践踏了优雅 2024-03-30 10:13 80阅读 0赞

#### 文章目录 ####

*  前言
 *  一、项目设计
 *   *  1. 模块设计
     *   *  服务器模块设计
         *  客户端模块设计
     *  2. 实现效果
 *  二、部分源码
 *  项目源码

--------------------

## 前言 ##

今天学长向大家分享一个 java 设计项目:

**基于Java聊天室系统的设计与实现**

--------------------

## 一、项目设计 ##

### 1. 模块设计 ###

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70]  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 1]

#### 服务器模块设计 ####

服务端的功能主要如下：

*  一：能够开启和关闭服务器。
 *  二：等待着客户端从特殊端口发送的请求。
 *  三：监听的端口并不是固定的，服务端的端口是能够自定义的。
 *  四：能够广播消息向所有连接到服务器的用户。

客户端和服务器之间通过socket套接字进行连接，socket的使用在java当中并不复杂，十分的简单。API提供了一个专门的类来处理，让编写程序变得十分简单。多线程的技术在服务器端得到了充分的体现，服务器能够同时处理来自不同IP的客户端的请求。通过循环调用serversocket对象的方法来监听是否有来自客户端的请求。

#### 客户端模块设计 ####

客户端的功能主要如下：

*  一：能够和服务端进行连接。
 *  二：新的用户能够注册账号。
 *  三：通过用户名以及密码完成用户的登陆，连接到聊天室。
 *  四：用户能够在聊天室发送消息。

客户端通过socket与服务器建立连接。通过java对象的流来进行信息的传递，服务器接受请求返回对象，然后返回给客户端信息。不同的客户端的信息在服务端能够进行不同的处理。

### 2. 实现效果 ###

服务器界面  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 2]  
登录界面  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 3]

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 4]

用户聊天界面  
![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 5]

## 二、部分源码 ##

部分代码示例：

import javax.swing.*;
    import javax.swing.event.ChangeEvent;
    import javax.swing.event.ChangeListener;
    
    
    import java.awt.*;
    import java.awt.event.*;
    import java.net.*;
    import java.io.*;
    import java.util.*;
    
    public class ChatRoom extends Thread implements ActionListener {
        
    	static JFrame frmChat;
    
    	JPanel pnlChat;
    
    	JButton btnCls, btnExit, btnSend, btnClear, btnSave;
    
    	JLabel lblUserList, lblUserMessage, lblSendMessage, lblChatUser;
    
    	JLabel lblUserTotal, lblCount, lblBack;
    
    	JTextField txtMessage;
    
    	java.awt.List lstUserList;
    
    	TextArea taUserMessage;
    
    	JComboBox cmbUser;
    
    	JCheckBox chPrivateChat;
    
    	String strServerIp, strLoginName;
    
    	Thread thread;
    
    	final JLabel headLabel = new JLabel();
    
    	Dimension scrnsize;
    
    	Toolkit toolkit = Toolkit.getDefaultToolkit();
    
    	Message messobj = null;
    
    	String serverMessage = "";
    
    	// ���췽��
    	public ChatRoom(String name, String ip) {
        
    		strServerIp = ip;
    		strLoginName = name;
    		frmChat = new JFrame("������" + "[�û�:" + name + "]");
    		pnlChat = new JPanel();
    		frmChat.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    		frmChat.getContentPane().add(pnlChat);
    
    		Font fntDisp1 = new Font("����", Font.PLAIN, 12);
    
    		String list[] = {
         "������" };
    		btnCls = new JButton("����");
    		btnExit = new JButton("�˳�");
    		btnSend = new JButton("����");
    		btnSave = new JButton("����");
    		lblUserList = new JLabel("�������û��б���");
    		lblUserMessage = new JLabel("��������Ϣ��");
    		lblSendMessage = new JLabel("��������:");
    		lblChatUser = new JLabel("���:");
    		lblUserTotal = new JLabel("��������:");
    		lblCount = new JLabel("0");
    		lstUserList = new java.awt.List();
    		txtMessage = new JTextField(170);
    		cmbUser = new JComboBox(list);
    		cmbUser.addItemListener(new ItemListener() {
        
    			public void itemStateChanged(ItemEvent arg0) {
        
    				freshHead();
    			}
    		});
    		chPrivateChat = new JCheckBox("˽��");
    		taUserMessage = new TextArea("", 300, 200,
    				TextArea.SCROLLBARS_VERTICAL_ONLY);// ֻ�����¹���
    		taUserMessage.setForeground(new Color(0, 0, 0));
    		taUserMessage.setEditable(false); // ����д��
    
    		pnlChat.setLayout(null);
    		pnlChat.setBackground(new Color(52, 130, 203));
    		btnSave.setBounds(500, 330, 80, 25);
    		btnCls.setBounds(400, 330, 80, 25);
    		btnExit.setBounds(500, 360, 80, 25);
    		btnSend.setBounds(500, 300, 80, 25);
    
    		lblUserList.setBounds(5, 0, 120, 40);
    		lblUserTotal.setBounds(130, 0, 60, 40);
    		lblCount.setBounds(190, 0, 60, 40);
    		lblUserMessage.setBounds(225, 0, 180, 40);
    		lblChatUser.setBounds(10, 290, 40, 40);
    		lblSendMessage.setBounds(210, 290, 60, 40);
    
    		lstUserList.setBounds(5, 40, 210, 255);
    		taUserMessage.setBounds(225, 40, 360, 255);
    		txtMessage.setBounds(270, 300, 210, 25);
    		cmbUser.setBounds(50, 300, 80, 25);
    		chPrivateChat.setBounds(333, 336, 60, 20);
    		btnCls.setFont(fntDisp1);
    		btnExit.setFont(fntDisp1);
    		btnSend.setFont(fntDisp1);
    		btnSave.setFont(fntDisp1);
    		lblUserList.setFont(fntDisp1);
    		lblUserMessage.setFont(fntDisp1);
    		lblChatUser.setFont(fntDisp1);
    		lblSendMessage.setFont(fntDisp1);
    		lblUserTotal.setFont(fntDisp1);
    		lblCount.setFont(fntDisp1);
    		cmbUser.setFont(fntDisp1);
    		chPrivateChat.setFont(fntDisp1);
    
    		lblUserList.setForeground(Color.YELLOW);
    		lblUserMessage.setForeground(Color.YELLOW);
    		lblSendMessage.setForeground(Color.black);
    		lblChatUser.setForeground(Color.black);
    		lblSendMessage.setForeground(Color.black);
    		lblUserTotal.setForeground(Color.YELLOW);
    		lblCount.setForeground(Color.YELLOW);
    		cmbUser.setForeground(Color.black);
    		chPrivateChat.setForeground(Color.black);
    		lstUserList.setBackground(Color.white);
    		taUserMessage.setBackground(Color.white);
    		btnCls.setBackground(Color.ORANGE);
    		btnExit.setBackground(Color.ORANGE);
    		btnSend.setBackground(Color.PINK);
    		btnSave.setBackground(Color.ORANGE);
    		pnlChat.add(btnCls);
    		pnlChat.add(btnExit);
    		pnlChat.add(btnSend);
    		pnlChat.add(btnSave);
    		pnlChat.add(lblUserList);
    		pnlChat.add(lblUserMessage);
    		pnlChat.add(lblSendMessage);
    		pnlChat.add(lblChatUser);
    		pnlChat.add(lblUserTotal);
    		pnlChat.add(lblCount);
    		pnlChat.add(lstUserList);
    		pnlChat.add(taUserMessage);
    		pnlChat.add(txtMessage);
    		pnlChat.add(cmbUser);
    		pnlChat.add(chPrivateChat);
    
    		frmChat.addWindowListener(new Windowclose());
    		btnCls.addActionListener(this);
    		btnExit.addActionListener(this);
    		btnSend.addActionListener(this);
    		btnSave.addActionListener(this);
    		lstUserList.addActionListener(this);
    		txtMessage.addActionListener(this);
    
    		headLabel.setHorizontalAlignment(SwingConstants.CENTER);
    		headLabel.setIcon(new ImageIcon("face//1.JPG"));
    		headLabel.setBounds(15, 335, 70, 60);
    		pnlChat.add(headLabel);
    
    		// ��������ҳ����Ϣˢ���߳�
    		Thread thread = new Thread(this);
    		thread.start();
    
    		frmChat.setSize(600, 420);
    		frmChat.setVisible(true);
    		frmChat.setResizable(false);
    
    		// �����ڶ�λ����Ļ����
    		scrnsize = toolkit.getScreenSize();
    		frmChat.setLocation(scrnsize.width / 2 - frmChat.getWidth() / 2,
    				scrnsize.height / 2 - frmChat.getHeight() / 2);
    		Image img = toolkit.getImage("images\\appico.jpg");
    		frmChat.setIconImage(img);
    
    	} // ���췽������
    
    	@SuppressWarnings("deprecation")
    	public void run() {
        
    		int intMessageCounter = 0;
    		int intUserTotal = 0;
    		boolean isFirstLogin = true; // �ж��Ƿ�յ�½
    		boolean isFound; // �ж��Ƿ��ҵ��û�
    		Vector user_exit = new Vector();
    
    		try {
        
    			for (;;) {
        
    				Socket toServer;
    				toServer = new Socket(strServerIp, 1001);
    				// ����Ϣ����������
    				messobj = new Message();
    				ObjectOutputStream streamtoserver = new ObjectOutputStream(
    						toServer.getOutputStream());
    				streamtoserver.writeObject((Message) messobj);
    				// �����Է���������Ϣ
    				ObjectInputStream streamfromserver = new ObjectInputStream(
    						toServer.getInputStream());
    				messobj = (Message) streamfromserver.readObject();
    				// //ˢ��������Ϣ�б�//
    				if (isFirstLogin) // ����յ�½
    				{
        
    					intMessageCounter = messobj.chat.size(); // ���θ��û���½ǰ����������
    					isFirstLogin = false;
    				}
    				if (!serverMessage.equals(messobj.serverMessage)) {
        
    					serverMessage = messobj.serverMessage;
    					taUserMessage.append("[ϵͳ��Ϣ]��" + serverMessage+"\n");
    				}
    				for (int i = intMessageCounter; i < messobj.chat.size(); i++) {
        
    					Chat temp = (Chat) messobj.chat.elementAt(i);
    
    					String temp_message;
    					if (temp.chatUser.equals(strLoginName)) {
        
    						if (temp.chatToUser.equals(strLoginName)) {
        
    							temp_message = "ϵͳ��ʾ�����벻Ҫ�������" + "\n";
    						} else {
        
    							if (!temp.whisper) // �������Ļ�
    							{
        
    								temp_message = "���㡿�ԡ�" + temp.chatToUser + "��"
    										+ "˵��" + temp.chatMessage
    										+ "\n";
    							} else {
        
    								temp_message = "���㡿���Ķԡ�" + temp.chatToUser
    										+ "��" + "˵��" + temp.chatMessage
    										+ "\n";
    							}
    						}
    					} else {
        
    						if (temp.chatToUser.equals(strLoginName)) {
        
    							if (!temp.whisper) // �������Ļ�
    							{
        
    								temp_message = "��" + temp.chatUser + "���ԡ��㡿"
    										+ "˵��" + temp.chatMessage
    										+ "\n";
    							} else {
        
    								temp_message = "��" + temp.chatUser + "�����Ķԡ��㡿"
    										+ "˵��" + temp.chatMessage
    										+ "\n";
    							}
    						} else {
        
    							if (!temp.chatUser.equals(temp.chatToUser)) // �Է�û����������
    							{
        
    								if (!temp.whisper) // �������Ļ�
    								{
        
    									temp_message = "��" + temp.chatUser + "���ԡ�"
    											+ temp.chatToUser + "��"
    											+ "˵��" + temp.chatMessage + "\n";
    								} else {
        
    									temp_message = "";
    								}
    							} else {
        
    								temp_message = "";
    							}
    						}
    					}
    					taUserMessage.append(temp_message);
    					intMessageCounter++;
    				}
    
    				// //ˢ�������û�//
    				lstUserList.clear();
    				for (int i = 0; i < messobj.userOnLine.size(); i++) {
        
    					String User = ((Customer) messobj.userOnLine.elementAt(i)).custName;
    					lstUserList.addItem(User);
    				}
    				Integer a = new Integer(messobj.userOnLine.size());
    				lblCount.setText(a.toString());
    				// ��ʾ�û����������ҵ���Ϣ
    				if (messobj.userOnLine.size() > intUserTotal) {
        
    					String tempstr = ((Customer) messobj.userOnLine
    							.elementAt(messobj.userOnLine.size() - 1)).custName;
    					if (!tempstr.equals(strLoginName)) {
        
    						taUserMessage.append("��" + tempstr + "������" + "\n");
    					}
    				}
    				if (messobj.userOnLine.size() < intUserTotal) {
        
    					for (int b = 0; b < user_exit.size(); b++) {
        
    						isFound = false;
    						for (int c = 0; c < messobj.userOnLine.size(); c++) {
        
    							String tempstr = ((Customer) user_exit.elementAt(b)).custName;
    
    							if (tempstr.equals(((Customer) messobj.userOnLine
    									.elementAt(c)).custName)) {
        
    								isFound = true;
    								break;
    							}
    						}
    						if (!isFound) // û�з��ָ��û�
    						{
        
    							String tempstr = ((Customer) user_exit.elementAt(b)).custName;
    
    							if (!tempstr.equals(strLoginName)) {
        
    								taUserMessage.append("��" + tempstr + "������"
    										+ "\n");
    							}
    						}
    					}
    				}
    				user_exit = messobj.userOnLine;
    				intUserTotal = messobj.userOnLine.size();
    				streamtoserver.close();
    				streamfromserver.close();
    				toServer.close();
    				Thread.sleep(3000);
    			}
    
    		} catch (Exception e) {
        
    			@SuppressWarnings("unused")
    			JOptionPane jop = new JOptionPane();
    			JOptionPane.showMessageDialog(null, "�������ӷ�������");
    			e.printStackTrace();
    			frmChat.dispose();
    		}
    
    	} // run()����
    
    	private void exitChatRoom() {
        
    		exit();
    	}
    
    	// /������ť��Ӧ//
    	public void actionPerformed(ActionEvent ae) {
        
    		Object source = (Object) ae.getSource();
    		if (source.equals(btnCls)) {
        
    			clearMessage();
    		}
    		if (source.equals(btnExit)) {
        
    			exit();
    		}
    		if (source.equals(btnSend)) {
        
    			sendMessage();
    		}
    		if (source.equals(btnSave)) {
        
    			saveMessage();
    		}
    		if (source.equals(lstUserList)) // ˫���б���
    		{
        
    			changeUser();
    		}
    	} // actionPerformed()����
    
    	// /�������ڹر���Ӧ//
    	class Windowclose extends WindowAdapter {
        
    		public void windowClosing(WindowEvent e) {
        
    			exit();
    		}
    	}
    
    	// "����"��ť
    	public void clearMessage() {
        
    		taUserMessage.setText("");
    	}
    
    	// "�˳�"��ť
    	public void exit() {
        
    		Exit exit = new Exit();
    		exit.exitname = strLoginName;
    		// �����˳���Ϣ
    		try {
        
    			Socket toServer = new Socket(strServerIp, 1001);
    			// �������������Ϣ
    			ObjectOutputStream outObj = new ObjectOutputStream(toServer
    					.getOutputStream());
    			outObj.writeObject(exit);
    			outObj.close();
    			toServer.close();
    
    			frmChat.dispose();
    		} catch (Exception e) {
        
    		}
    
    	} // exit()����
    
    	// "����"��ť
    	public void sendMessage() {
        
    		Chat chatobj = new Chat();
    		chatobj.chatUser = strLoginName;
    		chatobj.chatMessage = txtMessage.getText();
    		chatobj.chatToUser = String.valueOf(cmbUser.getSelectedItem());
    		chatobj.whisper = chPrivateChat.isSelected() ? true : false;
    		try {
        
    			Socket toServer = new Socket(strServerIp, 1001);
    			ObjectOutputStream outObj = new ObjectOutputStream(toServer
    					.getOutputStream());
    			outObj.writeObject(chatobj);
    			txtMessage.setText(""); // ����ı���
    			outObj.close();
    			toServer.close();
    		} catch (Exception e) {
        
    		}
    	}
    
    	// "����"��ť
    	public void saveMessage() {
        
    		try {
        
    			FileOutputStream fileoutput = new FileOutputStream(
    					this.strLoginName + "_message.txt", true);
    			String temp = taUserMessage.getText();
    			fileoutput.write(temp.getBytes());
    			fileoutput.close();
    			JOptionPane.showMessageDialog(null, "�����¼������" + this.strLoginName
    					+ "_message.txt");
    		} catch (Exception e) {
        
    			System.out.println(e);
    		}
    
    	}
    
    	// ����ѡ�û����ӵ�cmbUser��
    	public void changeUser() {
        
    
    		boolean key = true;
    		String selected = lstUserList.getSelectedItem();
    		for (int i = 0; i < cmbUser.getItemCount(); i++) {
        
    			if (selected.equals(cmbUser.getItemAt(i))) {
        
    				key = false;
    				break;
    			}
    		}
    		if (key == true) {
        
    			cmbUser.insertItemAt(selected, 0);
    		}
    		String head = getUserHead(lstUserList.getSelectedItem());
    		cmbUser.setSelectedItem(selected);
    
    		headLabel.setIcon(new ImageIcon("face//" + head + ".JPG"));
    	}
    
    	protected void freshHead() {
        
    		String head = getUserHead(cmbUser.getSelectedItem().toString());
    		headLabel.setIcon(new ImageIcon("face//" + head + ".JPG"));
    	}
    
    	private String getUserHead(String selectedItem) {
        
    		String head = "oo";
    		for (int i = 0; i < messobj.userOnLine.size(); i++) {
        
    			String User = ((Customer) messobj.userOnLine.elementAt(i)).custName;
    			head = ((Customer) messobj.userOnLine.elementAt(i)).custHead;
    			if (User.equals(selectedItem)) {
        
    				break;
    			}
    		}
    		return head;
    	}
    
    	public static void main(String args[]) {
        
    		new ChatRoom("�����û�", "127.0.0.1");
    	}
    
    }

## 项目源码 ##

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 1]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/38dea8cc065543a38a4a6b22b3ebf341.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 2]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/7024887e1a8c4c3eb3e3298cc7e8b36c.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 3]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/772c0dc9ba8541c4aba5aca50a00045a.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 4]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/be24eb03fba44e50bdbcfac294bb1dd9.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L21hdGhvcl9zaW5vcg_size_36_color_FAFF2F_t_70 5]: https://image.dandelioncloud.cn/pgy_files/images/2024/03/30/7e4f28595fb84ae28336a34f813fa950.png