数据结构和算法, 我还没明白

永远的C
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package com.chat.util;

import java.util.Calendar;
import javax.swing.JLabel;
/**
* 时间类 , 获取时间信息
* @author 刘优
*
*/
public class TimeBean {
    private static byte [] date;        // year,month,day 年月日
    private static byte [] time;        // hour,minute,second 时分秒
    private static JLabel label;

    /**
     * 获取当前时间
     */
    static {
        if (time == null || date == null) {
            date = new byte[4];
            time = new byte[3];
        }
        Calendar calendar = Calendar.getInstance();
        date[0] = (byte)(calendar.get(Calendar.YEAR) - 2000);
        date[1] = (byte)(calendar.get(Calendar.MONTH) + 1);
        date[2] = (byte)(calendar.get(Calendar.DAY_OF_MONTH));
        date[3] = (byte)(calendar.get(Calendar.DAY_OF_WEEK));
        time[0] = (byte)(calendar.get(Calendar.HOUR_OF_DAY));
        time[1] = (byte)(calendar.get(Calendar.MINUTE));
        time[2] = (byte)(calendar.get(Calendar.SECOND));
        new Thread(new Runnable() {
            /**
             * 使label成为电子时钟
             */
            public void run() {
                while (true) {
                    if (label !=null) {
                        label.setText(getTime());
                    }
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    nextSecond();    //走起来 获取下一秒
                }
            }
        }).start();
    }

    public static void setLabel(JLabel l) {
        label = l;
    }
    private static boolean leapYear(int year) {
        if (year % 400 == 0 || (year % 4 == 0 && year % 100 != 0)) {
            return true;
        }
        return false;
    }
    private static boolean overLastDay(int year,int month,int day) {
        int [] days = {32,30,32,31,32,31,32,32,31,32,31,32};
        if (month != 2 && day == days[month - 1]) {
            return true;
        }
        else if (leapYear(year) && day == 30) {
            return true;
        }
        else if (day == 29) {
            return true;
        }
        return false;
    }
    /**
     * 取得下一秒的时间
     *
     */
    public static void nextSecond() {
        if (++time[2] == 60) {                                         // 过了一分钟
            time[2] = 0;
            if (++time[1] == 60) {                                     // 过了一小时
                time[1] = 0;
                if (++time[0] == 24) {                                 // 过了一天
                    time[0] = 0;
                    if (overLastDay(date[0],date[1],++date[2])) {     // 过了一个月
                        date[2] = 1;
                        if (++date[1] == 13) {                         // 过了一年
                            date[1] = 1;
                            date[0]++;
                        }
                    }
                }
            }
        }
    }
    /**
     * 格式化星期显示
     * @return
     */
    public static String getWeek() {
        String week = "星期";
        switch (date[3]) {
        case Calendar.SUNDAY :
            week += "日";
            break;
        case Calendar.MONDAY :
            week += "一";
            break;
        case Calendar.TUESDAY :
            week += "二";
            break;
        case Calendar.WEDNESDAY :
            week += "三";
            break;
        case Calendar.THURSDAY:
            week += "四";
            break;
        case Calendar.FRIDAY :
            week += "五";
            break;
        case Calendar.SATURDAY :
            week += "六";
            break;
        default:
                break;
        }
        return week;
    }
    /**
     * 取得格式化的日期
     */
    public static String getDate() {
        return (2000 + date[0]) + "-" + (date[1] < 10 ? "0" : "") + date[1] + "-" + (date[2] < 10 ? "0" : "") + date[2] + " " + getWeek();
    }
    /**
     * 获取当前时间的字符串, yyyy-mm-dd hh24:mi:ss
     * @return String
     */
    public static String getTime() {
        return (time[0] < 10 ? "0" : "") + time[0] + " : " + (time[1] < 10 ? "0" : "") + time[1] + " : " + (time[2] < 10 ? "0" : "") + time[2];
    }
}


package com.chat.server;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream; import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.HashSet;
import java.util.Vector;

/**
* 处理用户信息的类 包括验证,写文件等操作
*
* @author 刘优
*
*/
public class UserBean {

    private static String userfile = "user/user";                // 用户文件,保存用户信息
    //private static String fileEncode = "UTF-8";

    static {
        File folder = new File("user");
        if (!folder.exists()) {
            boolean b = folder.mkdir();
        }
        File f = new File(userfile);
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    /**
     * 获取所有用户名 在usr目录下的urs文件中
     * @return vector
     */
    public static Vector<String> getUserNames() {
        File f = new File(userfile);
        Vector<String> v = new Vector<String>();
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return v;
        }
        BufferedReader fileReader = null;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(f)));
            String one = fileReader.readLine();
            while (one != null) {
                v.add(one.split(":")[0]);
                one = fileReader.readLine();
            }

        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return v;
    }
    /**
     * 注册一个新用户
     * @param name
     * @param passwd
     */
    public static void register(String name,String passwd) {
        File f = new File(userfile);
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        FileWriter fileWriter = null;
        try {
            fileWriter = new FileWriter(userfile,true);
            MessageDigest key = MessageDigest.getInstance("MD5");    // 把用户的密码保存为MD5密文
            byte[] bytes = key.digest(passwd.getBytes());
            String s = "";
            for (byte b : bytes) {
                s += b;
            }
            fileWriter.write(name + ":" + s + ":5\n");
            fileWriter.flush();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        } finally {
            if (fileWriter != null)
                try {
                    fileWriter.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }

    }
    /**
     * 验证登录用户
     * @param name
     * @param passwd
     * @return boolean
     */
    public static int[] login(String name,String passwd) {
        //System.out.println("user passwd -- " + name + "," + passwd);
        name = name.trim();
        passwd = passwd.trim();

        int[] rs = {1,1};

        File f = new File(userfile);
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
            return rs;
        }

        BufferedReader fileReader = null;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(f)));
            MessageDigest key = MessageDigest.getInstance("MD5");    // 验证用户的密码
            byte[] bytes = key.digest(passwd.getBytes());
            String s = "";
            for (byte b : bytes) {
                s += b;
            }
            String one = fileReader.readLine();
            while (one != null) {
                //System.out.println("file : " + one);
                String [] infors = one.split(":");
                if (infors[0].equals(name)) {
                    rs[0] = 0;
                    rs[1] = 1;
                    if (infors[1].trim().equals(s.trim())) {
                        rs[1] = 0;
                    }
                    break;
                }

                one = fileReader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
        }
        finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return rs;
    }
    /**
     * 获取客户的黑名单
     * @param username
     * @return vector
     */
    public static Vector<String []> getBlackUsers(String username) {
        Vector<String []> v = new Vector<String []>();
        File f = new File("user/" + username + ".black");
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        BufferedReader fileReader = null;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(f)));
            String one = fileReader.readLine();
            while (one != null) {
                String [] line = new String[] {username,one};
                v.add(line);
                one = fileReader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return v;
    }
    /**
     * 把其它用户放入黑名单
     * @param username
     * @param blackUser
     */
    public static void addBlack(String username,String blackUser) {
        File f = new File("user/" + username + ".black");    //黑名单文件
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        FileWriter writer = null;
        try {
            writer = new FileWriter(f,true);    // 采用追加的方式写文件
            writer.write(blackUser + "\n");
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (writer != null) {
                try {
                    writer.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }

    }
    /**
     * 写用户黑名单文件
     * @param username
     * @param blackUsers
     */
    public static void writeBlackFile(String username,Vector<String []> blackUsers) {
        PrintWriter theWriter = null;
        try {
            theWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream("user/" + username + ".black")));
            for (String[] pair : blackUsers) {
                if (pair[0].equals(username)) {
                    theWriter.println(pair[1]);
                }
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (theWriter != null) {
                theWriter.close();
            }
        }

    }
    /**
     * 获取用户的好友名单
     * @param name
     * @return hashset
     */
    public static HashSet<String> getFriends(String name) {
        HashSet<String> v = new HashSet<String>();
        File f = new File("user/" + name + ".friend");
        if (!f.exists()) {
            try {
                f.createNewFile();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
        BufferedReader fileReader = null;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(f)));
            String one = fileReader.readLine();
            while (one != null) {
                v.add(one);
                one = fileReader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return v;
    }
    /**
     * 写用户好友文件 username.friend
     * @param username
     * @param friends
     */
    public static void writeFriendFile(String username,HashSet<String> friends) {
        PrintWriter theWriter = null;
        try {
            theWriter = new PrintWriter(new OutputStreamWriter(new FileOutputStream("user/" + username + ".friend")));
            for (String one : friends) {
                theWriter.println(one);
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } finally {
            if (theWriter != null) {
                theWriter.close();
            }
        }
    }
    /**
     * 获取帮助文件内容 用来给TERM端客户显示
     * @return 文件内容
     */
    public static String getHelpFileContent() {
        String s = "";
        BufferedReader fileReader = null;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream("user/help")));//获取帮助文件
            String one = fileReader.readLine();
            while (one != null) {
                s += one + "\n\r";
                one = fileReader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return s;
    }
    /**
     * 判断一个用户是否为已注册用户
     * @param name
     * @return
     */
    public static boolean isUser(String name) {
        BufferedReader fileReader = null;
        boolean is = false;
        try {
            fileReader = new BufferedReader(new InputStreamReader(new FileInputStream(userfile)));
            String one = fileReader.readLine();
            while (one != null) {
                if (one.split(":")[0].equals(name)) {
                    is = true;
                    break;
                }
                one = fileReader.readLine();
            }
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            if (fileReader != null)
                try {
                    fileReader.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
        }
        return is;
    }
}


            
package com.chat.main;
            import java.io.BufferedReader;
            import java.io.IOException;
            import java.io.InputStreamReader;
            import com.chat.server.ChatServer;
            /**
            * 服务器主程序
            * @author 刘优
            *
            */
            public class ServerMain implements Runnable {
            private static int port = 8888;
            private BufferedReader keyReader;
            private ChatServer server;
            public ServerMain() throws IOException {
            keyReader = new BufferedReader(new InputStreamReader(System.in));
            server = new ChatServer(port);
            Thread listener = new Thread(this);
            listener.start();
            server.start();
            }
            /**
            * 接受控制台命令, 控制服务器
            */
            public void run() {
            while (true) {
            try {
            System.out.println("input command : ");
            String cmd = keyReader.readLine();
            if (cmd == null) break;
            if (cmd.equals("start")) {
            server.start();
            }
            else if (cmd.equals("restart")) {
            server.restart();
            }
            else if (cmd.startsWith("kick")) {
            server.kickOff(cmd.split(" ")[1]);
            }
            else if (cmd.equals("stop")) {    // 停止服务器
                                server.stop();
            }
            else if (cmd.equals("exit")) {    // 退出程序
                                server.stop();
            System.exit(0);
            }
            else if (!cmd.trim().equals("")) {
            System.out.println("command : " + cmd + " not recognized!");
            }
            } catch (Exception e) {
            e.printStackTrace();
            }
            }
            }
            public static void main(String[] args) {
            if (args.length > 0)
            {
            try {
            port = Integer.parseInt(args[0]);
            }
            catch (Exception e) {}
            }
            try {
            ServerMain main = new ServerMain();
            } catch (IOException e) {
            e.printStackTrace();
            }
            }
            }

package com.chat.util;

import java.awt.Window; import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JDialog;
import javax.swing.JFrame;

/**
* 窗口显示设置类, 使窗口置中
* @author 刘优
*
*/
public class WindowTool {
   
    /**
     * 居中显示窗口
     * @param w
     */
    public static void doView(Window w) {
   
        w.setSize(w.getToolkit().getScreenSize().width,w.getToolkit().getScreenSize().height - 40);
        w.setLocation(0,0);
        w.setVisible(true);
        if (w.getClass() == JFrame.class) {
            ((JFrame)w).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            ((JFrame)w).setResizable(false);
        }
        if (w.getClass() == JDialog.class) {
            ((JDialog)w).setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);
            ((JDialog)w).setResizable(false);
        }
    }
   
    /**
     * 居中显示窗口
     * @param w
     * @param width
     * @param height
     */
    public static void doView(Window w,int width,int height) {
        w.setSize(width,height);
        int width2 = w.getToolkit().getScreenSize().width;
        width2 = (width2 - w.getWidth()) / 2;
        int height2 = w.getToolkit().getScreenSize().height;
        height2 = (height2 - w.getHeight()) / 2;
        w.setLocation(width2,height2);
        w.setVisible(true);
        if (w.getClass() == JFrame.class) {
            ((JFrame)w).setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            ((JFrame)w).setResizable(false);
        }
        /*
        if (w.getClass() == JDialog.class) {
            ((JDialog)w).setDefaultCloseOperation(JDialog.EXIT_ON_CLOSE);
            ((JDialog)w).setResizable(false);
        }
        */
    }
    /**
     * 设置窗口关闭
     * @param w 窗口
     */
    public static void doClose(Window w) {
        final Window w2 = w;
        w.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent we) {
                w2.dispose();   
            }
        });
    }
}

posted on 2008-07-10 13:12  Pauliuyou  阅读(264)  评论(0)  编辑  收藏  举报