Java: 将课程表解析成每周课表

又快开学了。。写一个课程表当练手。先用HttpWatcher把课程爬下来存进txt里（代码省略），然后解析成每周课表，就像超级课程表一样。爬虫的结果如下：

最终效果如下：

代码如下：

// Coding starts here
import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.EventQueue;
import java.awt.FlowLayout;
import java.io.IOException;
import java.io.PrintWriter;
import java.nio.charset.Charset;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.LocalDate;
import java.time.LocalTime;
import java.util.ArrayList;
import java.util.List;import javax.swing.JButton;
import javax.swing.JComboBox;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.border.EmptyBorder;
import javax.swing.filechooser.FileNameExtensionFilter;/*** GUI主窗口。显示课程表主体* 最后一次修改时间：Feb. 22nd, 2019* @author Hippo* @since Feb. 16th, 2019*/
public class ScheduleTableGUI extends JFrame
{private static final long serialVersionUID = -3144698016849055495L;private JPanel contentPane;private JLabel[] labels;private JComboBox<String> comboBox;private static String title = "河马课程表 - null";/*** Launch the application.*/public static void main(String[] args){EventQueue.invokeLater(() ->{try{UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());}catch (Exception whatever) // There's nothing (I could / to) do, sorry.{}try{ScheduleUtilities.readCurricula(Paths.get("./src/justdowhateveryouwant/curricula.txt"));ScheduleTableGUI frame = new ScheduleTableGUI();frame.setVisible(true);}catch (Exception e){e.printStackTrace();String method = "set";if (e instanceof IOException)method = "read";JOptionPane.showMessageDialog(null,method + "Curricula() method failed. More information:\r\n" + e.getClass().getName() + ": " + e.getMessage(),"河马课程表", JOptionPane.ERROR_MESSAGE);}});}/*** Create the frame.*/public ScheduleTableGUI(){setTitle(title);setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setBounds(100, 100, 1336, 819);setResizable(false);contentPane = new JPanel();contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));contentPane.setLayout(new BorderLayout(0, 0));setContentPane(contentPane);JPanel northFlowPanel = new JPanel(new FlowLayout());contentPane.add(northFlowPanel, BorderLayout.NORTH);JPanel centerNullPanel = new JPanel(null);centerNullPanel.setBorder(new EmptyBorder(5, 5, 5, 5));contentPane.add(centerNullPanel, BorderLayout.CENTER);Color darkerGray = Color.GRAY.darker();Color ligherBlack = darkerGray.darker().darker().darker();labels = new JLabel[48];for (int i = 0; i < 6; i++){for (int j = 0; j < 8; j++){int index = i * 8 + j;labels[index] = new JLabel();labels[index].setBounds(j * 165, i * 125, 165, 125);labels[index].setOpaque(true);labels[index].setHorizontalAlignment(JTextField.CENTER);if ((i & 1) == 0)labels[index].setBackground((j & 1) == 0 ? ligherBlack : darkerGray);elselabels[index].setBackground((j & 1) == 0 ? darkerGray : ligherBlack);labels[index].setForeground(Color.WHITE);centerNullPanel.add(labels[index]);}}{// BLOCK ALERT: Should never be modified unless regulations changedlabels[0].setText("<html><body><h1>河马课程表</h1></body></html>");ScheduleUtilities.setWeekLabels(labels, 1);labels[8].setText("<html><body><h2>第1-2节<br /></h2>上午</body></html>");labels[16].setText("<html><body><h2>第3-4节<br /></h2>上午</body></html>");labels[24].setText("<html><body><h2>第5-6节<br /></h2>下午</body></html>");labels[32].setText("<html><body><h2>第7-8节<br /></h2>下午</body></html>");labels[40].setText("<html><body><h2>第9-10节<br /></h2>晚上</body></html>");}comboBox = new JComboBox<>();comboBox.addActionListener(event ->{int week = comboBox.getSelectedIndex() + 1;ScheduleUtilities.setCurricula(week, labels);ScheduleUtilities.setWeekLabels(labels, week);setTitle(title);});comboBox.setSize(330, 30);for (int i = 1; i < 23; i++)comboBox.addItem(String.format("    第 %2d 周    ", i));northFlowPanel.add(comboBox);JButton sttstcsBtn = new JButton("数据统计");sttstcsBtn.addActionListener(event -> {String statistics = ScheduleUtilities.statistics();String[] buttons = { "     确定     ", "     导出     ", "     取消     " };if (JOptionPane.showOptionDialog(null, statistics, "河马课程表", 0, 1, null, buttons, buttons[0]) == 1){JFileChooser chooser = new JFileChooser(".");chooser.setAcceptAllFileFilterUsed(false);chooser.setFileFilter(new FileNameExtensionFilter("文本文件(*.txt)", "txt"));chooser.showOpenDialog(this);String saveTo = chooser.getSelectedFile().getAbsolutePath();if (!saveTo.endsWith(".txt"))saveTo += ".txt";try (PrintWriter pw = new PrintWriter(saveTo)){pw.println("[河马课程表]\r\n[Statistics][导出时间：" + LocalDate.now() + " " + LocalTime.now()+ "]\r\n" + statistics);JOptionPane.showMessageDialog(null, "导出完成", "河马课程表", JOptionPane.INFORMATION_MESSAGE);}catch (IOException e){JOptionPane.showMessageDialog(null,"文件读写时出错。 More information:\r\n" + e.getClass().getName() + ": " + e.getMessage(),"河马课程表", JOptionPane.ERROR_MESSAGE);}}});northFlowPanel.add(sttstcsBtn);}public static void resetTitle(String t) { title = t; }
}/*** 课表实用类* 包含所有课程的信息集合、解析文件、设置课程等方法* @author Hippo*/
class ScheduleUtilities
{private static ArrayList<ClassInfo> infos;/*** 设置周一到周日的标签（带日期）* @param labels*/public static void setWeekLabels(JLabel[] labels, int week){LocalDate date = LocalDate.of(2018, 3, 5).plusDays((week - 1) * 7);labels[1].setText("<html><body><h2>星期一<br /></h2>" + date + "</body></html>");labels[2].setText("<html><body><h2>星期二<br /></h2>" + date.plusDays(1) + "</body></html>");labels[3].setText("<html><body><h2>星期三<br /></h2>" + date.plusDays(2) + "</body></html>");labels[4].setText("<html><body><h2>星期四<br /></h2>" + date.plusDays(3) + "</body></html>");labels[5].setText("<html><body><h2>星期五<br /></h2>" + date.plusDays(4) + "</body></html>");labels[6].setText("<html><body><h2>星期六<br /></h2>" + date.plusDays(5) + "</body></html>");labels[7].setText("<html><body><h2>星期日<br /></h2>" + date.plusDays(6) + "</body></html>");}/*** 根据{@code infos}向表格添加课程* @param week 当前周数* @param labels JLabel数组传参*/public static void setCurricula(int week, JLabel[] labels){for (int i = 9; i < 48; i++){if (i == 16 || i == 24 || i == 32 || i == 40)continue;labels[i].setText("");}ArrayList<ClassInfo> needed = getWeekInfo(week);int overlapped = 0;for (ClassInfo each : needed){int index = getIndex(each);if (labels[index].getText().equals(""))labels[index].setText(each.toScheduleString(false));else{overlapped = 4;labels[index].setText(each.toScheduleString(true));}}if (overlapped == 4)JOptionPane.showMessageDialog(null, "发现本周存在课程重叠（已标记），您无法修得所有课程！", "河马课程表", JOptionPane.ERROR_MESSAGE);}/*** 获得当前周的所有课程* @param week 当前周数* @return*/private static ArrayList<ClassInfo> getWeekInfo(int week){ArrayList<ClassInfo> needed = new ArrayList<>();for (ClassInfo info : infos)if (info.getWeeks().contains(week))needed.add(info);return needed;}private static ArrayList<Integer> getOddWeeks(ClassInfo info){ArrayList<Integer> weeks = new ArrayList<>();for (Integer each : info.getWeeks())if ((each & 1) == 1)weeks.add(each);return weeks;}private static ArrayList<Integer> getEvenWeeks(ClassInfo info){ArrayList<Integer> weeks = new ArrayList<>();for (Integer each : info.getWeeks())if ((each & 1) == 0)weeks.add(each);return weeks;}/*** 根据课程获取JLabel数组的角标* @param each* @return*/private static int getIndex(ClassInfo info){int weekday = info.getWeekday();int time = info.getStartTime();return (time + 1) / 2 * 8 + weekday;}/*** 根据文件解析课程* @param path 文件路径* @throws IOException*/public static void readCurricula(Path path) throws IOException{infos = new ArrayList<>();List<String> lines = Files.readAllLines(path, Charset.forName("gbk"));ScheduleTableGUI.resetTitle("河马课程表 - " + lines.get(0));int flag = 0;ClassInfo info = null;for (int i = 1; i < lines.size(); i++){String currentLine = lines.get(i);if (currentLine == null || currentLine.equals(""))  // 跳过空行continue;if (currentLine.contains("|"))  // 则该行为“课程名 | 任课教师 | 授课周数 | 学分”，flag为0{info = new ClassInfo();String[] strs = lines.get(i).split(" *\\| *");info.setName(strs[0]);info.setProfessor(strs[1]);String[] weeksStr = strs[2].replaceAll("[^0-9\\-,]", "").split(",");ArrayList<Integer> weeks = new ArrayList<>();for (String week : weeksStr){if (week.contains("-")){String[] dual = week.split("\\-");int start = Integer.parseInt(dual[0]);int end = Integer.parseInt(dual[1]);for (int k = start; k <= end; k++)weeks.add(k);}elseweeks.add(Integer.parseInt(week));}info.setWeeks(weeks);info.setCredit(Double.parseDouble(strs[3]));flag = 0;}else  // 则该行为“星期Xa-b节，地点，校区[，单双周限制]”，flag为1。假设a和b只相差1{if (flag == 1)info = ClassInfo.cloneHalf(infos.get(infos.size() - 1));String[] strs = lines.get(i).split("，");int weekday = 0;switch (strs[0].charAt(2)){case '一':default:weekday = 1;break;case '二':weekday = 2;break;case '三':weekday = 3;break;case '四':weekday = 4;break;case '五':weekday = 5;break;case '六':weekday = 6;break;case '日':weekday = 7;}info.setWeekday(weekday);info.setStartTime(Integer.parseInt("" + strs[0].charAt(3)));info.setClassroom(strs[1]);info.setCampus(strs[2]);if (strs.length == 4){if (strs[3].equals("单周"))info.setOdd(true);else if (strs[3].equals("双周"))info.setEven(true);}flag = 1;ArrayList<Integer> weeks = null;if (info.isOdd())weeks = getOddWeeks(info);else if (info.isEven())weeks = getEvenWeeks(info);elseweeks = info.getWeeks();info.setWeeks(weeks);infos.add(info);}}
//        for (ClassInfo each : infos)
//            System.out.println(each);}/*** 统计本学期课程数据*/public static String statistics(){StringBuilder sb = new StringBuilder("以下数据按照学分倒序排列：\r\n");ArrayList<ClassInfo> merged = new ArrayList<>();double totalCredit = 0;BIG_LOOP:for (int d = 0; d < infos.size(); d++){ClassInfo info = infos.get(d);info.setTotal(info.getWeeks().size());for (int i = 0; i < merged.size(); i++){ClassInfo current = merged.get(i);if (current.equals(info)){current.setTotal(current.getToTal() + info.getToTal());continue BIG_LOOP;}}merged.add(info);totalCredit += info.getCredit();}merged.sort((a, b) ->{return Double.compare(b.getCredit(), a.getCredit());});int totalClasses = 0;for (ClassInfo each : merged){sb.append(each.toStatisticalString() + "\r\n");totalClasses += each.getToTal();}sb.append("\r\n若成功活过本学期的" + totalClasses + "堂课，你将至少获得" + String.format("%.1f", totalCredit) + "学分！\r\n");return sb.toString();}
}/*** 包含每门课所有信息的课程类* @author Hippo*/
class ClassInfo
{private String name;  // 课程名称private String professor;  // 任课教师private ArrayList<Integer> weeks;  // 上课的周数private int weekday;  // 星期几上课private int startTime;  // 上课时间（取第一个序号）private String classroom;  // 上课地点private String campus;  // 校区private boolean odd = false;  // 单周上课private boolean even = false;  // 双周上课private double credit;  // 学分private int total;  // 本学期该课程总课数public String getName() { return name; }public void setName(String name) { this.name = name; }public String getProfessor() { return professor; }public void setProfessor(String professor) { this.professor = professor; }public ArrayList<Integer> getWeeks() { return weeks; }public void setWeeks(ArrayList<Integer> weeks) { this.weeks = weeks; }public int getWeekday() { return weekday; }public void setWeekday(int weekday) { this.weekday = weekday; }public int getStartTime() { return startTime; }public void setStartTime(int startTime) { this.startTime = startTime; }public String getClassroom() { return classroom; }public void setClassroom(String classroom) { this.classroom = classroom; }public String getCampus() { return campus; }public void setCampus(String campus) { this.campus = campus; }public boolean isOdd() { return odd; }public void setOdd(boolean odd) { this.odd = odd; }public boolean isEven() { return even; }public void setEven(boolean even) { this.even = even; }public double getCredit() { return credit; }public void setCredit(double credit) { this.credit = credit; }public int getToTal() { return total; }public void setTotal(int total) { this.total = total; }/*** 每门课信息不止一行时，每行都算作一门新课* 用此方法返回初始化了一半参数的新ClassInfo对象* @param info 最后一次创建的ClassInfo对象* @return 新ClassInfo对象*/public static ClassInfo cloneHalf(ClassInfo info){ClassInfo newInfo = new ClassInfo();newInfo.setName(info.getName());newInfo.setProfessor(info.getProfessor());newInfo.setWeeks(info.getWeeks());newInfo.setCredit(info.getCredit());return newInfo;}@Overridepublic String toString(){return String.format("[课程名称=%s, 任课教师=%s, 周数=%s, 星期=%d, 时间=%d, 地点=%s, 校区=%s, 单周=%b, 双周=%b，学分=%.1f]",name, professor, weeks, weekday, startTime, classroom, campus, odd, even, credit);}/*** 课程表中每个格子的格式* @param overlapped 是否存在课程重叠* @return 格式化后的字符串*/public String toScheduleString(boolean overlapped){return String.format("<html><body><center>%s<br />教师：%s<br />@ %s<br />（%s）<br />%.1f学分"+ (overlapped ? "<br /><b><font color=\"red\">课程重叠！</font></b>" : "")+ "</center></body></html>",name, professor, classroom, campus, credit);}public String toStatisticalString(){return String.format("[%.1f学分][%s] 共计%d节课，即%d个学时，%.1f个小时", credit, name, total, total * 2, total * 1.5);}/*** 若两门课的名称一致，则认为两门课相同* @return boolean*/@Overridepublic boolean equals(Object obj){if (obj == null || !(obj instanceof ClassInfo))return false;if (obj == this)return true;return getName().equals(((ClassInfo) obj).getName());}
}

在进阶的路上，欢迎各位大神指正。

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