MySQLとJavaを使って簡単な音楽プレーヤー機能を実装する方法

import java.sql.*;

public class MusicPlayer {
    private static final String DB_URL = "jdbc:mysql://localhost/music_player";
    private static final String DB_USERNAME = "your_username";
    private static final String DB_PASSWORD = "your_password";

    public static void main(String[] args) {
        try {
            // 连接数据库
            Connection conn = DriverManager.getConnection(DB_URL, DB_USERNAME, DB_PASSWORD);

            // 向songs表中插入数据
            insertSong(conn, "Song Title 1", "Artist 1", 180);
            insertSong(conn, "Song Title 2", "Artist 2", 200);

            // 创建一个播放列表，并向playlists表中插入数据
            createPlaylist(conn, "My Playlist");
            addSongToPlaylist(conn, "My Playlist", 1);
            addSongToPlaylist(conn, "My Playlist", 2);

            // 关闭数据库连接
            conn.close();
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 向songs表中插入数据
    private static void insertSong(Connection conn, String title, String artist, int duration) {
        try {
            String sql = "INSERT INTO songs (title, artist, duration) VALUES (?, ?, ?)";
            PreparedStatement statement = conn.prepareStatement(sql);
            statement.setString(1, title);
            statement.setString(2, artist);
            statement.setInt(3, duration);
            statement.executeUpdate();
            System.out.println("Song inserted successfully!");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 创建一个播放列表，并向playlists表中插入数据
    private static void createPlaylist(Connection conn, String name) {
        try {
            String sql = "INSERT INTO playlists (name) VALUES (?)";
            PreparedStatement statement = conn.prepareStatement(sql);
            statement.setString(1, name);
            statement.executeUpdate();
            System.out.println("Playlist created successfully!");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }

    // 向播放列表中添加歌曲
    private static void addSongToPlaylist(Connection conn, String playlistName, int songId) {
        try {
            String sql = "SELECT songs FROM playlists WHERE name = ?";
            PreparedStatement statement = conn.prepareStatement(sql);
            statement.setString(1, playlistName);
            ResultSet resultSet = statement.executeQuery();
            resultSet.next();
            String songs = resultSet.getString("songs");
            if (songs == null || songs.isEmpty()) {
                songs = String.valueOf(songId);
            } else {
                songs += "," + songId;
            }
            sql = "UPDATE playlists SET songs = ? WHERE name = ?";
            statement = conn.prepareStatement(sql);
            statement.setString(1, songs);
            statement.setString(2, playlistName);
            statement.executeUpdate();
            System.out.println("Song added to playlist successfully!");
        } catch (SQLException e) {
            e.printStackTrace();
        }
    }
}

import javax.sound.sampled.*;
import java.io.*;

public class MusicPlayer {

    public static void main(String[] args) {
        try {
            // 创建音频流
            AudioInputStream audioInputStream = AudioSystem.getAudioInputStream(new File("song.wav"));

            // 获取音频格式
            AudioFormat format = audioInputStream.getFormat();

            // 创建音频剪辑
            Clip clip = AudioSystem.getClip();
            clip.open(audioInputStream);

            // 播放音频剪辑
            clip.start();

            // 等待音频播放完毕
            Thread.sleep(clip.getMicrosecondLength() / 1000);

            // 关闭音频流
            audioInputStream.close();

        } catch (UnsupportedAudioFileException | IOException | LineUnavailableException | InterruptedException e) {
            e.printStackTrace();
        }
    }
}