public class solrServer {

    private solrServer(){};

    final static String SOLR_URL = "http://localhost:8080/solr/test";

    private static HttpSolrClient server = null;

    public static HttpSolrClient getServer(){

        if(server == null){

            server = new HttpSolrClient(SOLR_URL);

            server.setDefaultMaxConnectionsPerHost(1000);

            server.setMaxTotalConnections(10000);

            server.setConnectionTimeout(60000);

            server.setSoTimeout(60000);

            server.setFollowRedirects(false);

            server.setAllowCompression(true);

        }

        return server;

    }

}

public class solrTest {

    public static void addIndex(){

        HttpSolrClient server = solrServer.getServer();

        SolrInputDocument doc = new SolrInputDocument();

        doc.addField("id", "1003");

        doc.addField("name_s", "wanglc3");

        doc.addField("score_i", "883");

        try {

            server.add(doc);

            server.commit();

        } catch (SolrServerException | IOException e) {

            e.printStackTrace();

        }

    }

    public static void delete(){

        HttpSolrClient server = solrServer.getServer();

        try {

            server.deleteById("1001");

            server.commit();

        } catch (SolrServerException | IOException e) {

            e.printStackTrace();

        }

    }

    public static void search(){

        HttpSolrClient server = solrServer.getServer();

        SolrQuery query = new SolrQuery();

        query.setQuery("*:*");

        query.setStart(0);

        query.setRows(5);

        QueryResponse queryResponse;

        try {

            queryResponse = server.query(query);

            SolrDocumentList list = queryResponse.getResults();

            System.out.println("num = "+list.getNumFound());

            for(int i=0;i<list.size();i++){

                System.out.println(list.get(i).getFieldValue("name_s"));

            }

        } catch (Exception e) {

            e.printStackTrace();

        }

    }

    public static void main(String[] args) {

        //addIndex();

        //delete();

        search();

    }

}