数据库ktv点歌系统

// 示例代码：使用连接池连接MySQL数据库
import java.sql.Connection;
import java.sql.SQLException;
import org.apache.commons.dbcp2.BasicDataSource;

public class DatabaseConnectionPool {
    private static BasicDataSource dataSource = new BasicDataSource();

    static {
        dataSource.setUrl("jdbc:mysql://localhost:3306/ktv");
        dataSource.setUsername("user");
        dataSource.setPassword("password");
        dataSource.setMinIdle(5);
        dataSource.setMaxIdle(10);
        dataSource.setMaxOpenPreparedStatements(100);
    }

    public static Connection getConnection() throws SQLException {
        return dataSource.getConnection();
    }
}

-- 示例代码：创建索引
CREATE INDEX idx_song_name ON songs (song_name);

// 示例代码：使用事务管理
try (Connection conn = DatabaseConnectionPool.getConnection()) {
    conn.setAutoCommit(false);
    // 执行数据库操作
    conn.commit();
} catch (SQLException e) {
    conn.rollback();
    e.printStackTrace();
}