Java课程设计(qq聊天程序).ppt

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1、MiniQQ,tian_,Using Java 设计文档 可视化 多方通信 好友维护 聊天记录 开发文档、总结报告,登录窗口 注册窗口 好友列表 聊天窗口 查找/添加好友 聊天记录 对话框(登录失败、注册成功、注册失败 确认删除、错误提示等),登录窗口,注册,查找好友,好友列表,查找结果,聊天窗口,聊天记录,Packages Server 登录验证 注册服务 好友维护 聊天组维护 在线用户维护 消息转发 异常处理 . .,Client 各个窗口 好友维护 聊天记录维护 活动窗口维护 异常处理 . .,Multi-Thread Socket-ServerSocket I/O Stream JDB

2、C (Files R/W),创建Thread的子类，并覆盖run()方法 实现Runnable接口,public class ChatServer ArrayList clients = new ArrayList(); public static void main(String args) new ChatServer().begin(); public void begin() ss = new ServerSocket(8888); Socket s = ss.accept(); Client c = new Client(s); new Thread(c).start(); clie

3、nts.add(c); ,class Client implements Runnable /ChatServer内部类 private Socket s; private DataInputStream dis = null; private DataOutputStream dos = null; public Client(Socket s) this.s = s; dis = new DataInputStream(s.getInputStream(); dos = new DataOutputStream(s.getOutputStream(); public void send(S

4、tring str) dos.writeUTF(str); public void run() String str = dis.readUTF(); for(int i=0; iclients.size(); i+) Client c = clients.get(i); c.send(str); ,MySQL(小键盘回车执行命令) http:/ xxx;,1:使用SHOW语句找出在服务器上当前存在什么数据库： mysql SHOW DATABASES; 2:创建一个数据库MYSQLDATA mysql CREATE DATABASE MYSQLDATA; 3:选择你所创建的数据库 mysql

5、 USE MYSQLDATA; (按回车键出现Database changed 时说明操作成功！) 4:查看现在的数据库中存在什么表 mysql SHOW TABLES; 5:创建一个数据库表 mysql CREATE TABLE MYTABLE (name VARCHAR(20), sex CHAR(1); 6:显示表的结构： mysql DESCRIBE MYTABLE;,7:往表中加入记录 mysql insert into MYTABLE values (“hyq“,“M“); 8:用文本方式将数据装入数据库表中（例如D:/mysql.txt） mysql LOAD DATA LOCA

6、L INFILE “D:/mysql.txt“ INTO TABLE MYTABLE; 9:导入.sql文件命令（例如D:/mysql.sql） mysqluse database; mysqlsource d:/mysql.sql; 10:删除表 mysqldrop TABLE MYTABLE; 11:清空表 mysqldelete from MYTABLE; 12:更新表中数据 mysqlupdate MYTABLE set sex=“f“ where name=hyq;,MySQL-front Navicat SQLyog mysql-workbench,user ID name pas

7、sword regDate .,friendship ID user_ID friend_ID type frdDate .,record ID user_ID friend_ID other info. .,Login friendList friendManagement chatWindow groupManagement chatRecord,Login.java,btnLogin.addActionListener(new ActionListener() public void actionPerformed(ActionEvent e) boolean checked = ser

8、ver.verify( this.getuser() , this.password() ); /登录验证 if(checked) new friendsWindow(); loginFrame.setVisible(false); /loginFrame.dispose(); else . );,listFriend() /server.java,Statement s = conn.createStatement(); ResultSet rs = s.executeQuery(“select user.name, friendship.type “ + “from user, frien

9、dship“ + “where user.ID = friendship.friend_ID“ + “AND friendship.user_ID = “ + this.getUserID()+“); while(rs.next() int type = rs.getInt(“type“); swith (type) case 0: /friendNode.add(current); case 1: /strangeNode.add(current); default: /blacklistNode.add(current); ,每一个chatWindow对应一个线程 所有chatWindow

10、按照组进行分类，并且由server负责维护讨论组 每个讨论组里面都应该有一个数据结构(list)维护组里的窗口,服务器收发消息时向数据库中插入聊天记录，或者本地维护另一个数据库，在本地插入聊天记录 采用文本文件保存聊天记录时，可以以对方用户名/ID为文件名分别保存不同对象的聊天记录,private BufferedReader inputStream = null; private BufferedWriter outputStream = null; private StringBuilder sb = new StringBuilder(); private String file; pr

11、ivate int line = 0; /number zero private static SimpleDateFormat s = new SimpleDateFormat(“yyyy-MM-dd“);/格式化日期使用,public class FileManager public FileManager(String userID,String friendID) checkExsit(userID,friendID); run(); private void checkExsit(String userID,String friendID) /*检查用户聊天记录文件夹路径存在否，*u

12、serID为当前用户，friendID为好友*/ File f = new File(System.getProperties().getProperty(“user.dir“) + “chatLog/“ + userID); if(!f.exists() f.mkdirs(); file = f.getAbsolutePath() + “/“ + friendID + “.txt“; f = new File(file); if (!f.exists()/*检查聊天记录文件有无*/ try f.createNewFile(); catch (IOException e) e.printSta

13、ckTrace(); ,public void run() try inputStream = new BufferedReader(new FileReader(file); String l; while (l = inputStream.readLine() != null) line+; sb.append(l + System.getProperty(“line.separator“); catch (FileNotFoundException e) e.printStackTrace(); catch (IOException e) e.printStackTrace(); fin

14、ally if (inputStream != null) try inputStream.close(); catch (IOException e) e.printStackTrace(); ,/获取当前日期.格式为 2009-02-02 private static String getDate() Date date = new Date(); return “ + s.format(date) + “; /清除记录 public void removeMsg() line = 0; sb.delete(0, getString().length(); ,/保存聊天记录. public

15、 void save(String msg) String newMsg = msg; /加入当前日期. if (msg.trim().length() != 0) newMsg = getDate() + System.getProperty(“line.separator“) + “-“ + System.getProperty(“line.separator“) + newMsg; sb.append(System.getProperty(“line.separator“) + newMsg); try outputStream = new BufferedWriter(new File

16、Writer(file); outputStream.write(sb.toString(); catch (IOException e) e.printStackTrace(); finally try outputStream.close(); catch (IOException e) e.printStackTrace(); ,/获取记录内容 public String getString() return sb.toString(); /获取行数 public int getLines() return line; ,private JTree tree; private TreeN

17、ode node; private DefaultTreeModel model; private DefaultTreeCellRenderer renderer; model = new DefaultTreeModel(node); tree = new JTree(model); renderer = new DefaultTreeCellRenderer(); renderer.setLeafIcon(new ImageIcon(“a.jpg“);/叶子结点图片 renderer.setClosedIcon(new ImageIcon(“b.jpg“);/关闭树后显示的图片 rend

18、erer.setOpenIcon(new ImageIcon(“c.jpg“);/打开树时显示的图片 tree.setCellRenderer(renderer);,头像显示,public class TreePopupMenu extends JFrame implements MouseListener, ActionListener private static final long serialVersionUID = 1L; JTree tree; JPopupMenu popMenu; JMenuItem addItem; JMenuItem delItem; JMenuItem

19、editItem; public TreePopupMenu() / JTree构造 / String model = “我的好友“, “陌生人“, “黑名单“; / tree = new JTree(model); tree = new JTree(); tree.setEditable(true); tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); tree.addMouseListener(this);,JTree右键菜单,tree.setCellEditor(new

20、DefaultTreeCellEditor(tree, new DefaultTreeCellRenderer(); setSize(200, 800); popMenu = new JPopupMenu(); addItem = new JMenuItem(“加入黑名单“); addItem.addActionListener(this); delItem = new JMenuItem(“删除好友“); delItem.addActionListener(this); editItem = new JMenuItem(“修改备注“); editItem.addActionListener(

21、this); popMenu.add(addItem); popMenu.add(delItem); popMenu.add(editItem); getContentPane().add(new JScrollPane(tree); public void mouseClicked(MouseEvent e) public void mouseEntered(MouseEvent e) public void mouseExited(MouseEvent e) ,public void mousePressed(MouseEvent e) TreePath path = tree.getPa

22、thForLocation(e.getX(), e.getY(); if (path = null) return; tree.setSelectionPath(path); if (e.getButton() = 3) popMenu.show(tree, e.getX(), e.getY(); public void mouseReleased(MouseEvent e) public void actionPerformed(ActionEvent e) DefaultMutableTreeNode node = (DefaultMutableTreeNode) tree.getLast

23、SelectedPathComponent(); if (e.getSource() = addItem) (DefaultTreeModel) tree.getModel().insertNodeInto(new DefaultMutableTreeNode(“Test“), node, node.getChildCount();,tree.expandPath(tree.getSelectionPath(); else if (e.getSource() = delItem) if (node.isRoot() return; (DefaultTreeModel) tree.getModel().removeNodeFromParent(node); else if (e.getSource() = editItem) tree.startEditingAtPath(tree.getSelectionPath(); public static void main(String args) TreePopupMenu frame = new TreePopupMenu(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); ,