如何使用java将多个XML文件加载到MySQL

import java.io.File;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;
import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import org.w3c.dom.Document;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;

public class XMLtoMySQL {
    public static void main(String[] args) {
        try {
            // 创建数据库连接
            Connection conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/mydatabase", "username", "password");
            
            // 获取XML文件列表
            File xmlFolder = new File("path/to/xml/folder");
            File[] xmlFiles = xmlFolder.listFiles();
            
            // 循环处理每个XML文件
            for (File xmlFile : xmlFiles) {
                // 解析XML文件
                DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
                DocumentBuilder builder = factory.newDocumentBuilder();
                Document doc = builder.parse(xmlFile);
                
                // 获取根元素
                Element root = doc.getDocumentElement();
                
                // 获取XML文件中的数据
                NodeList nodeList = root.getElementsByTagName("data");
                for (int i = 0; i < nodeList.getLength(); i++) {
                    Node node = nodeList.item(i);
                    if (node.getNodeType() == Node.ELEMENT_NODE) {
                        Element element = (Element) node;
                        
                        // 解析XML元素并插入到数据库
                        String value1 = element.getAttribute("value1");
                        String value2 = element.getAttribute("value2");
                        
                        insertData(conn, value1, value2);
                    }
                }
            }
            
            // 关闭数据库连接
            conn.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
    
    private static void insertData(Connection conn, String value1, String value2) throws SQLException {
        String sql = "INSERT INTO mytable (column1, column2) VALUES (?, ?)";
        PreparedStatement statement = conn.prepareStatement(sql);
        statement.setString(1, value1);
        statement.setString(2, value2);
        statement.executeUpdate();
        statement.close();
    }
}