mysql solr导入

import java.sql.*;
import java.util.*;
import org.apache.solr.client.solrj.SolrClient;
import org.apache.solr.client.solrj.SolrServerException;
import org.apache.solr.client.solrj.impl.HttpSolrClient;
import org.apache.solr.common.SolrInputDocument;

public class MySQLToSolr {
    public static void main(String[] args) {
        String mysqlUrl = "jdbc:mysql://localhost:3306/mydatabase";
        String mysqlUser = "user";
        String mysqlPassword = "password";
        String solrUrl = "http://localhost:8983/solr/mycore";

        try (Connection conn = DriverManager.getConnection(mysqlUrl, mysqlUser, mysqlPassword);
             SolrClient solrClient = new HttpSolrClient.Builder(solrUrl).build()) {

            String sql = "SELECT id, title, content FROM mytable";
            try (Statement stmt = conn.createStatement();
                 ResultSet rs = stmt.executeQuery(sql)) {

                while (rs.next()) {
                    SolrInputDocument document = new SolrInputDocument();
                    document.addField("id", rs.getString("id"));
                    document.addField("title", rs.getString("title"));
                    document.addField("content", rs.getString("content"));
                    solrClient.add(document);
                }
                solrClient.commit();
            }
        } catch (SQLException | SolrServerException | IOException e) {
            e.printStackTrace();
        }
    }
}