solr索引mysql

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;

import java.io.IOException;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

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

        try (SolrClient solrClient = new HttpSolrClient.Builder(solrUrl).build();
             Connection conn = DriverManager.getConnection(mysqlUrl, mysqlUser, mysqlPassword);
             Statement stmt = conn.createStatement();
             ResultSet rs = stmt.executeQuery("SELECT * FROM mytable")) {

            while (rs.next()) {
                SolrInputDocument document = new SolrInputDocument();
                document.addField("id", rs.getString("id"));
                document.addField("name", rs.getString("name"));
                document.addField("description", rs.getString("description"));
                solrClient.add(document);
            }

            solrClient.commit();
        } catch (IOException | SolrServerException e) {
            e.printStackTrace();
        }
    }
}