javafx 连接数据库

要在JavaFX中连接数据库，可以使用JDBC API。以下是连接到MySQL数据库的示例代码：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;

public class DatabaseConnection {
    private static final String DB_DRIVER = "com.mysql.jdbc.Driver";
    private static final String DB_CONNECTION = "jdbc:mysql://localhost:3306/your_database_name";
    private static final String DB_USER = "your_database_user";
    private static final String DB_PASSWORD = "your_database_password";

    public static Connection getDBConnection() {
        Connection dbConnection = null;

        try {
            Class.forName(DB_DRIVER);
        } catch (ClassNotFoundException e) {
            System.out.println(e.getMessage());
        }

        try {
            dbConnection = DriverManager.getConnection(DB_CONNECTION, DB_USER, DB_PASSWORD);
            return dbConnection;
        } catch (SQLException e) {
            System.out.println(e.getMessage());
        }

        return dbConnection;
    }
}

在这个示例中，我们使用JDBC连接到MySQL数据库。要连接到不同的数据库，只需要更改DB_DRIVER，DB_CONNECTION，DB_USER和DB_PASSWORD变量，然后使用getDBConnection()方法获取数据库连接对象。