毕业设计

2023-08-14 13:26| 来源: 网络整理| 查看: 265

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

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登录界面

在这里插入图片描述

用户聊天界面在这里插入图片描述

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 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 String tempstr = ((Customer) messobj.userOnLine .elementAt(messobj.userOnLine.size() - 1)).custName; if (!tempstr.equals(strLoginName)) { taUserMessage.append("��" + tempstr + "��" + "\n"); } } if (messobj.userOnLine.size() isFound = false; for (int c = 0; c 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 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 break; } } return head; } public static void main(String args[]) { new ChatRoom("��û�", "127.0.0.1"); } } 项目源码

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