Java課程設(shè)計ppt課件

1、MiniQQtian_jx126Using Java設(shè)計文檔可視化多方通信好友維護聊天記錄開發(fā)文檔、總結(jié)報告登錄窗口注冊窗口好友列表聊天窗口查找/添加好友聊天記錄對話框(登錄失敗、注冊成功、注冊失敗 確認刪除、錯誤提示等)登錄窗口注冊查找好友好友列表查找結(jié)果聊天窗口聊天記錄PackagesServer登錄驗證注冊服務(wù)好友維護聊天組維護在線用戶維護消息轉(zhuǎn)發(fā)異常處理. .Client各個窗口好友維護聊天記錄維護活動窗口維護異常處理. .Multi-ThreadSocket-ServerSocketI/O StreamJDBC (Files R/W)創(chuàng)建Thread的子類，并覆蓋run()方法實現(xiàn)R

2、unnable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();clients.add(c); class Client implements Runnable /C

3、hatServer內(nèi)部類內(nèi)部類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(String str) dos.writeUTF(str); public void run() S

4、tring str = dis.readUTF();for(int i=0; i SHOW DATABASES; 2:創(chuàng)建一個數(shù)據(jù)庫MYSQLDATA mysql CREATE DATABASE MYSQLDATA; 3:選擇你所創(chuàng)建的數(shù)據(jù)庫 mysql USE MYSQLDATA; (按回車鍵出現(xiàn)Database changed 時說明操作成功！)4:查看現(xiàn)在的數(shù)據(jù)庫中存在什么表 mysql SHOW TABLES;5:創(chuàng)建一個數(shù)據(jù)庫表 mysql CREATE TABLE MYTABLE (name VARCHAR(20), sex CHAR(1);6:顯示表的結(jié)構(gòu)： mysql DESC

5、RIBE MYTABLE; 7:往表中加入記錄 mysql insert into MYTABLE values (hyq,M); 8:用文本方式將數(shù)據(jù)裝入數(shù)據(jù)庫表中例如D:/mysql.txt） mysql LOAD DATA LOCAL INFILE D:/mysql.txt INTO TABLE MYTABLE;9:導入.sql文件命令例如D:/mysql.sql） mysqluse database; mysqlsource d:/mysql.sql; 10:刪除表 mysqldrop TABLE MYTABLE; 11:清空表 mysqldelete from MYTABLE;12:

6、更新表中數(shù)據(jù) mysqlupdate MYTABLE set sex=f where name=hyq; MySQL-front Navicat SQLyog mysql-workbenchuserIDnamepasswordregDate. friendship ID user_ID friend_ID type frdDate . record ID user_ID friend_ID other info. .LoginfriendListfriendManagementchatWindowgroupManagementchatRecordLogin.javabtnLogin.addAc

7、tionListener(new ActionListener() public void actionPerformed(ActionEvent e) boolean checked = server.verify( this.getuser() , this.password() );/登錄驗證if(checked) new friendsWindow(); loginFrame.setVisible(false);/loginFrame.dispose();else. );listFriend() /server.javaStatement s = conn.createStatemen

8、t();ResultSet rs = s.executeQuery(select , friendship.type + from user, friendship + 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)

9、;default: /blacklistNode.add(current);每一個chatWindow對應(yīng)一個線程所有chatWindow按照組進行分類，并且由server負責維護討論組每個討論組里面都應(yīng)該有一個數(shù)據(jù)結(jié)構(gòu)(list)維護組里的窗口服務(wù)器收發(fā)消息時向數(shù)據(jù)庫中插入聊天記錄，或者本地維護另一個數(shù)據(jù)庫，在本地插入聊天記錄采用文本文件保存聊天記錄時，可以以對方用戶名/ID為文件名分別保存不同對象的聊天記錄 private BufferedReader inputStream = null; private BufferedWriter outputStream = null; priva

10、te StringBuilder sb = new StringBuilder(); private String file; private int line = 0; /number zero private static SimpleDateFormat s = new SimpleDateFormat(yyyy-MM-dd);/格式化日期使用public class FileManagerpublic FileManager(String userID,String friendID) checkExsit(userID,friendID); run();private void ch

11、eckExsit(String userID,String friendID)/*檢查用戶聊天記錄文件夾路徑存在否，檢查用戶聊天記錄文件夾路徑存在否，*userID為當前用戶，為當前用戶，friendID為好友為好友*/ 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.e

12、xists()/*檢查聊天記錄文件有無檢查聊天記錄文件有無*/ try f.createNewFile(); catch (IOException e) e.printStackTrace(); 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 (FileNotF

13、oundException e) e.printStackTrace(); catch (IOException e) e.printStackTrace(); finally if (inputStream != null) try inputStream.close(); catch (IOException e) e.printStackTrace(); /獲取當前日期.格式為 2021-02-02private static String getDate() Date date = new Date();return + s.format(date) + ; /清除記錄public v

14、oid removeMsg() line = 0; sb.delete(0, getString().length(); /保存聊天記錄.public void save(String msg)String newMsg = msg; /加入當前日期.if (msg.trim().length() != 0) newMsg = getDate() + System.getProperty(line.separator) + - + System.getProperty(line.separator) + newMsg; sb.append(System.getProperty(line.sep

15、arator) + newMsg);try outputStream = new BufferedWriter(new FileWriter(file); outputStream.write(sb.toString(); catch (IOException e) e.printStackTrace();finally try outputStream.close(); catch (IOException e) e.printStackTrace(); /獲取記錄內(nèi)容public String getString() return sb.toString(); /獲取行數(shù)public in

16、t getLines() return line; private JTree tree; private TreeNode node; private DefaultTreeModel model; private DefaultTreeCellRenderer renderer; model = new DefaultTreeModel(node); tree = new JTree(model); renderer = new DefaultTreeCellRenderer(); renderer.setLeafIcon(new ImageIcon(a.jpg);/葉子結(jié)點圖片 rend

17、erer.setClosedIcon(new ImageIcon(b.jpg);/關(guān)閉樹后顯示的圖片 renderer.setOpenIcon(new ImageIcon(c.jpg);/打開樹時顯示的圖片 tree.setCellRenderer(renderer); 頭像顯示public class TreePopupMenu extends JFrame implements MouseListener, ActionListener private static final long serialVersionUID = 1L; JTree tree; JPopupMenu popMe

18、nu; JMenuItem addItem; JMenuItem delItem; JMenuItem editItem; public TreePopupMenu() / JTree構(gòu)造構(gòu)造 / String model = 我的好友我的好友, 陌生人陌生人, 黑名單黑名單; / tree = new JTree(model); tree = new JTree(); tree.setEditable(true); tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION); tree

19、.addMouseListener(this);JTree右鍵菜單 tree.setCellEditor(new DefaultTreeCellEditor(tree, new DefaultTreeCellRenderer(); setSize(200, 800); popMenu = new JPopupMenu(); addItem = new JMenuItem(加入黑名單加入黑名單); addItem.addActionListener(this); delItem = new JMenuItem(刪除好友刪除好友); delItem.addActionListener(this);

20、 editItem = new JMenuItem(修改備注修改備注); editItem.addActionListener(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.getPathForLocation(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(M