package cinemasystem;
import java.io.*;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;
import java.util.*;
// 用户基类
abstract class User implements Serializable {
private String username;
private String password;
private String type;
public User(String username, String password, String type) {
this.username = username;
this.password = password;
this.type = type;
}
public abstract void showMenu();
// Getters
public String getUsername() { return username; }
public String getPassword() { return password; }
public String getType() { return type; }
public void setPassword(String password) { this.password = password; }
public boolean validate(String inputUsername, String inputPassword) {
return this.username.equals(inputUsername) && this.password.equals(inputPassword);
}
}
// 管理员类
class Admin extends User {
public Admin(String username, String password) {
super(username, password, "Admin");
}
@Override
public void showMenu() {
AdminManager.showMenu(this);
}
}
// 前台类
class TicketSeller extends User {
public TicketSeller(String username, String password) {
super(username, password, "TicketSeller");
}
@Override
public void showMenu() {
TicketSellerManager.showMenu(this);
}
}
// 影片类
class Movie implements Serializable {
private String title;
private int duration; // 分钟
public Movie(String title, int duration) {
this.title = title;
this.duration = duration;
}
// Getters
public String getTitle() { return title; }
public int getDuration() { return duration; }
}
// 场次类
class Session implements Serializable {
private String id;
private Movie movie;
private LocalDateTime startTime;
private double price;
private boolean[][] seats;
public Session(String id, Movie movie, LocalDateTime startTime, double price, int rows, int cols) {
this.id = id;
this.movie = movie;
this.startTime = startTime;
this.price = price;
this.seats = new boolean[rows][cols];
for (boolean[] row : seats) {
Arrays.fill(row, true);
}
}
// Getters
public String getId() { return id; }
public Movie getMovie() { return movie; }
public LocalDateTime getStartTime() { return startTime; }
public double getPrice() { return price; }
public boolean[][] getSeats() { return seats; }
public boolean bookSeat(int row, int col) {
if (row < 0 || row >= seats.length || col < 0 || col >= seats[0].length)
return false;
if (seats[row][col]) {
seats[row][col] = false;
return true;
}
return false;
}
public void showSeats() {
System.out.println("\n 座位分布:");
for (int i = 0; i < seats.length; i++) {
System.out.print((i + 1) + "排: ");
for (int j = 0; j < seats[i].length; j++) {
System.out.print(seats[i][j] ? "[ ] " : "[X] ");
}
System.out.println();
}
}
}
// 票类
class Ticket implements Serializable {
private String id;
private Session session;
private int row;
private int col;
private LocalDateTime time;
public Ticket(String id, Session session, int row, int col) {
this.id = id;
this.session = session;
this.row = row;
this.col = col;
this.time = LocalDateTime.now();
}
public String getInfo() {
return String.format("票号: %s\n影片: %s\n时间: %s\n座位: %d排%d座\n价格: %.2f元",
id, session.getMovie().getTitle(),
session.getStartTime().format(DateTimeFormatter.ofPattern("MM - dd HH:mm")),
row + 1, col + 1, session.getPrice());
}
// 新增获取场次方法，解决找不到符号问题
public Session getSession() {
return session;
}
// 新增获取排数方法，解决getRow()找不到符号问题
public int getRow() {
return row;
}
// 新增获取列数方法，考虑可能后续有获取col的需求
public int getCol() {
return col;
}
}
// 文件管理类
class FileManager {
private static final String USERS_FILE = "users.dat";
private static final String MOVIES_FILE = "movies.dat";
private static final String SESSIONS_FILE = "sessions.dat";
private static final String TICKETS_FILE = "tickets.dat";
// 保存对象到文件
public static void save(Object obj, String filename) {
try (ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream(filename))) {
oos.writeObject(obj);
} catch (IOException e) {
System.out.println("保存失败: " + e.getMessage());
}
}
// 从文件加载对象
public static Object load(String filename) {
try (ObjectInputStream ois = new ObjectInputStream(new FileInputStream(filename))) {
return ois.readObject();
} catch (Exception e) {
return null;
}
}
// 用户管理
public static void saveUsers(List<User> users) {
save(users, USERS_FILE);
}
@SuppressWarnings("unchecked")
public static List<User> loadUsers() {
Object data = load(USERS_FILE);
if (data == null) {
List<User> defaultUsers = new ArrayList<>();
defaultUsers.add(new Admin("admin", "admin123"));
defaultUsers.add(new TicketSeller("seller", "seller123"));
return defaultUsers;
}
return (List<User>) data;
}
// 电影管理
public static void saveMovies(List<Movie> movies) {
save(movies, MOVIES_FILE);
}
@SuppressWarnings("unchecked")
public static List<Movie> loadMovies() {
Object data = load(MOVIES_FILE);
return data != null ? (List<Movie>) data : new ArrayList<>();
}
// 场次管理
public static void saveSessions(List<Session> sessions) {
save(sessions, SESSIONS_FILE);
}
@SuppressWarnings("unchecked")
public static List<Session> loadSessions() {
Object data = load(SESSIONS_FILE);
return data != null ? (List<Session>) data : new ArrayList<>();
}
// 票务管理
public static void saveTickets(List<Ticket> tickets) {
save(tickets, TICKETS_FILE);
}
@SuppressWarnings("unchecked")
public static List<Ticket> loadTickets() {
Object data = load(TICKETS_FILE);
return data != null ? (List<Ticket>) data : new ArrayList<>();
}
}
// 管理员功能
class AdminManager {
private static final Scanner scanner = new Scanner(System.in);
private static int sessionIdCounter = 1;
public static void showMenu(Admin admin) {
while (true) {
System.out.println("\n=== 管理员菜单 ===");
System.out.println("1. 添加影片");
System.out.println("2. 添加场次");
System.out.println("3. 查看场次");
System.out.println("4. 修改密码");
System.out.println("0. 退出");
System.out.print("请选择: ");
int e = scanner.nextInt();
scanner.nextLine();
switch (e) {
case 1:
addMovie();
break;
case 2:
addSession();
break;
case 3:
viewSessions();
break;
case 4:
changePassword(admin);
break;
case 0:
return;
default:
System.out.println("无效选择");
}
}
}
private static void addMovie() {
System.out.print("输入影片名称: ");
String title = scanner.nextLine();
System.out.print("输入时长(分钟): ");
int duration = scanner.nextInt();
scanner.nextLine();
List<Movie> movies = FileManager.loadMovies();
movies.add(new Movie(title, duration));
FileManager.saveMovies(movies);
System.out.println("影片添加成功!");
}
private static void addSession() {
List<Movie> movies = FileManager.loadMovies();
if (movies.isEmpty()) {
System.out.println("请先添加影片!");
return;
}
System.out.println("可选影片:");
for (int i = 0; i < movies.size(); i++) {
System.out.printf("%d. %s (%d分钟)\n", i + 1, movies.get(i).getTitle(), movies.get(i).getDuration());
}
System.out.print("选择影片编号: ");
int movieIndex = scanner.nextInt() - 1;
scanner.nextLine();
if (movieIndex < 0 || movieIndex >= movies.size()) {
System.out.println("无效选择!");
return;
}
System.out.print("输入开始时间(yyyy - MM - dd HH:mm): ");
String timeStr = scanner.nextLine();
LocalDateTime time;
try {
time = LocalDateTime.parse(timeStr, DateTimeFormatter.ofPattern("yyyy - MM - dd HH:mm"));
} catch (Exception e) {
System.out.println("时间格式错误!");
return;
}
System.out.print("输入票价: ");
double price = scanner.nextDouble();
scanner.nextLine();
System.out.print("输入座位排数: ");
int rows = scanner.nextInt();
System.out.print("输入每排座位数: ");
int cols = scanner.nextInt();
scanner.nextLine();
String sessionId = "S" + sessionIdCounter++;
Session session = new Session(sessionId, movies.get(movieIndex), time, price, rows, cols);
List<Session> sessions = FileManager.loadSessions();
sessions.add(session);
FileManager.saveSessions(sessions);
System.out.println("场次添加成功! ID: " + sessionId);
}
private static void viewSessions() {
List<Session> sessions = FileManager.loadSessions();
if (sessions.isEmpty()) {
System.out.println("暂无场次");
return;
}
for (Session s : sessions) {
System.out.printf("ID: %s, 影片: %s, 时间: %s, 价格: %.2f\n",
s.getId(), s.getMovie().getTitle(),
s.getStartTime().format(DateTimeFormatter.ofPattern("MM - dd HH:mm")),
s.getPrice());
}
}
// 将方法访问修饰符改为public，解决private访问控制问题
public static void changePassword(User user) {
System.out.print("输入新密码: ");
String newPassword = scanner.nextLine();
user.setPassword(newPassword);
// 更新所有用户
List<User> users = FileManager.loadUsers();
for (User u : users) {
if (u.getUsername().equals(user.getUsername())) {
u.setPassword(newPassword);
}
}
FileManager.saveUsers(users);
System.out.println("密码修改成功!");
}
}
// 前台售票功能
class TicketSellerManager {
private static final Scanner scanner = new Scanner(System.in);
private static int ticketIdCounter = 1;
public static void showMenu(TicketSeller seller) {
while (true) {
System.out.println("\n=== 前台菜单 ===");
System.out.println("1. 售票");
System.out.println("2. 退票");
System.out.println("3. 修改密码");
System.out.println("0. 退出");
System.out.print("请选择: ");
int choice = scanner.nextInt();
scanner.nextLine();
switch (choice) {
case 1:
sellTicket();
break;
case 2:
refundTicket();
break;
case 3:
changePassword(seller);
break;
case 0:
return;
default:
System.out.println("无效时选择");
}
}
}
private static void sellTicket() {
List<Session> sessions = FileManager.loadSessions();
if (sessions.isEmpty()) {
System.out.println("暂无场次");
return;
}
System.out.println("当前的场次:");
for (int i = 0; i < sessions.size(); i++) {
Session s = sessions.get(i);
System.out.printf("%d. %s %s ￥%.2f\n",
i + 1, s.getMovie().getTitle(),
s.getStartTime().format(DateTimeFormatter.ofPattern("MM - dd HH:mm")),
s.getPrice());
}
System.out.print("选择场次: ");
int sessionIdx = scanner.nextInt() - 1;
scanner.nextLine();
if (sessionIdx < 0 || sessionIdx >= sessions.size()) {
System.out.println("无效选择!");
return;
}
Session session = sessions.get(sessionIdx);
session.showSeats();
System.out.print("选择排数: ");
int row = scanner.nextInt() - 1;
System.out.print("选择座位号: ");
int k = scanner.nextInt() - 1;
scanner.nextLine();
if (!session.bookSeat(row, k)) {
System.out.println("座位不可用!");
return;
}
String ticketId = "T" + ticketIdCounter++;
Ticket ticket = new Ticket(ticketId, session, row, k);
List<Ticket> tickets = FileManager.loadTickets();
tickets.add(ticket);
FileManager.saveTickets(tickets);
FileManager.saveSessions(sessions);
System.out.println("\n售票成功!");
System.out.println(ticket.getInfo());
}
private static void refundTicket() {
List<Ticket> tickets = FileManager.loadTickets();
if (tickets.isEmpty()) {
System.out.println("暂无票务记录");
return;
}
System.out.print("输入票号: ");
String ticketId = scanner.nextLine();
Ticket target = null;
for (Ticket t:tickets) {
if (t.getInfo().contains(ticketId)) {
target = t;
break;
}
}
if (target == null) {
System.out.println("票号不存在!");
return;
}
// 取消座位
List<Session> sessions = FileManager.loadSessions();
for (Session s:sessions) {
if (s.getId().equals(target.getSession().getId())) {
int row = target.getRow();
int col = target.getCol();
if (row >= 0 && row < s.getSeats().length &&
col >= 0 && col < s.getSeats()[0].length) {
s.getSeats()[row][col] = true; // 标记座位可用
}
break;
}
}
// 移除票
tickets.remove(target);
FileManager.saveTickets(tickets);
FileManager.saveSessions(sessions);
System.out.println("退票成功!");
}
private static void changePassword(User user) {
AdminManager.changePassword(user);
}
}
// 主程序
public class test2 {
private static final Scanner scanner = new Scanner(System.in);
public static void main(String[] args) {
List<User> users = FileManager.loadUsers();
while (true) {
System.out.println("\n=== 电影院管理系统 ===");
System.out.print("用户名: ");
String username = scanner.nextLine();
System.out.print("密码: ");
String password = scanner.nextLine();
User currentUser = null;
for (User user : users) {
if (user.validate(username, password)) {
currentUser = user;
break;
}
}
if (currentUser != null) {
System.out.println("登录成功! 角色: " + currentUser.getType());
currentUser.showMenu();
} else {
System.out.println("用户名或密码错误!");
}
}
}
}这段代码的uml图，用plantuml语言输出
本文介绍了一个PL/SQL函数getcol，该函数用于从指定的字符串中按掩码分隔符提取第pvar_index个字段。通过使用SUBSTR与INSTR函数组合，实现了对输入字符串的有效分割和定位。
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