使用结果集将字符串变量从数据库(datetime类型)解析为LocalDateTime变量

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;
import java.time.LocalDateTime;
import java.time.format.DateTimeFormatter;

public class DatabaseDateTimeParsing {
    public static void main(String[] args) {
        // 数据库连接信息
        String url = "jdbc:mysql://localhost:3306/mydatabase";
        String username = "root";
        String password = "password";

        // 查询语句
        String query = "SELECT datetime_column FROM mytable";

        try {
            // 连接数据库
            Connection connection = DriverManager.getConnection(url, username, password);
            Statement statement = connection.createStatement();

            // 执行查询语句
            ResultSet resultSet = statement.executeQuery(query);

            // 解析结果集中的datetime类型字符串
            while (resultSet.next()) {
                String datetimeString = resultSet.getString("datetime_column");

                // 解析为LocalDateTime变量
                DateTimeFormatter formatter = DateTimeFormatter.ofPattern("yyyy-MM-dd HH:mm:ss");
                LocalDateTime datetime = LocalDateTime.parse(datetimeString, formatter);

                // 使用解析后的LocalDateTime变量进行操作
                // ...

                System.out.println("Parsed LocalDateTime: " + datetime);
            }

            // 关闭连接
            resultSet.close();
            statement.close();
            connection.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}