用Java写一个电影网上购票系统的全部代码，将相关信息写入txt文件

好的，我会给你提供一个简单的Java电影网上购票系统的代码示例，包含了相关信息写入txt文件的功能。请注意，这个代码示例并不完整，仅供参考，你可以根据自己的需求进行修改和完善。

import java.io.BufferedWriter;
import java.io.File;
import java.io.FileWriter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;

public class MovieTicketSystem {
    private static final String MOVIE_FILE_NAME = "movies.txt";
    private static final String CINEMA_FILE_NAME = "cinemas.txt";
    private static final String TICKET_FILE_NAME = "tickets.txt";

    private List<Movie> movies;
    private List<Cinema> cinemas;

    public MovieTicketSystem() {
        this.movies = new ArrayList<>();
        this.cinemas = new ArrayList<>();
        loadMovies();
        loadCinemas();
    }

    private void loadMovies() {
        try {
            File file = new File(MOVIE_FILE_NAME);
            Scanner scanner = new Scanner(file);
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                String[] parts = line.split(",");
                String name = parts[0];
                String releaseDate = parts[1];
                double price = Double.parseDouble(parts[2]);
                Movie movie = new Movie(name, releaseDate, price);
                movies.add(movie);
            }
            scanner.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private void loadCinemas() {
        try {
            File file = new File(CINEMA_FILE_NAME);
            Scanner scanner = new Scanner(file);
            while (scanner.hasNextLine()) {
                String line = scanner.nextLine();
                String[] parts = line.split(",");
                String name = parts[0];
                String location = parts[1];
                List<Movie> movieList = new ArrayList<>();
                for (int i = 2; i < parts.length; i++) {
                    String movieName = parts[i];
                    Movie movie = findMovieByName(movieName);
                    if (movie != null) {
                        movieList.add(movie);
                    }
                }
                Cinema cinema = new Cinema(name, location, movieList);
                cinemas.add(cinema);
            }
            scanner.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private Movie findMovieByName(String name) {
        for (Movie movie : movies) {
            if (movie.getName().equals(name)) {
                return movie;
            }
        }
        return null;
    }

    public void showMovies() {
        for (Movie movie : movies) {
            System.out.println(movie.getName() + " - " + movie.getReleaseDate() + " - " + movie.getPrice());
        }
    }

    public void selectMovie(String movieName, String cinemaName) {
        Cinema cinema = findCinemaByName(cinemaName);
        if (cinema != null) {
            Movie movie = findMovieByName(movieName);
            if (movie != null && cinema.getMovieList().contains(movie)) {
                System.out.println("You selected " + movie.getName() + " at " + cinema.getName());
                selectSeat(movie, cinema);
            } else {
                System.out.println("Invalid movie or cinema");
            }
        } else {
            System.out.println("Invalid cinema");
        }
    }

    private void selectSeat(Movie movie, Cinema cinema) {
        // TODO: select seat
    }

    public void confirmPurchase(String movieName, String cinemaName, List<String> seats, String customerName) {
        Cinema cinema = findCinemaByName(cinemaName);
        if (cinema != null) {
            Movie movie = findMovieByName(movieName);
            if (movie != null && cinema.getMovieList().contains(movie)) {
                double price = seats.size() * movie.getPrice();
                String ticketInfo = customerName + "," + movie.getName() + "," + cinema.getName() + "," + seats.toString() + "," + price;
                saveTicket(ticketInfo);
                System.out.println("Purchase confirmed. Your ticket info: " + ticketInfo);
            } else {
                System.out.println("Invalid movie or cinema");
            }
        } else {
            System.out.println("Invalid cinema");
        }
    }

    private Cinema findCinemaByName(String name) {
        for (Cinema cinema : cinemas) {
            if (cinema.getName().equals(name)) {
                return cinema;
            }
        }
        return null;
    }

    private void saveTicket(String ticketInfo) {
        try {
            BufferedWriter writer = new BufferedWriter(new FileWriter(TICKET_FILE_NAME, true));
            writer.write(ticketInfo);
            writer.newLine();
            writer.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

class Movie {
    private String name;
    private String releaseDate;
    private double price;

    public Movie(String name, String releaseDate, double price) {
        this.name = name;
        this.releaseDate = releaseDate;
        this.price = price;
    }

    public String getName() {
        return name;
    }

    public String getReleaseDate() {
        return releaseDate;
    }

    public double getPrice() {
        return price;
    }
}

class Cinema {
    private String name;
    private String location;
    private List<Movie> movieList;

    public Cinema(String name, String location, List<Movie> movieList) {
        this.name = name;
        this.location = location;
        this.movieList = movieList;
    }

    public String getName() {
        return name;
    }

    public String getLocation() {
        return location;
    }

    public List<Movie> getMovieList() {
        return movieList;
    }
}

这个代码示例中，我们定义了MovieTicketSystem购票系统类，Movie电影类和Cinema电影院类。在MovieTicketSystem类中，我们实现了从txt文件中读取电影和电影院信息的方法，以及展示当前正在放映的电影列表、选择电影、选择座位、确认购买并生成购票信息等方法。在选择座位和确认购买方法中，我们将购票信息写入了另一个txt文件中。

请注意，为了简化代码，这个示例中并没有实现具体的座位选择功能，你需要根据自己的需求进行修改。此外，为了简化示例，这个代码中没有进行输入验证和错误处理，请在实际应用中进行相关处理。