public static QueryResponse query(String keywords,int startOfPage, int numberOfPage) throws SolrServerException, IOException {
        SolrQuery query = new SolrQuery();
        query.setStart(startOfPage);
        query.setRows(numberOfPage);
        
        query.setQuery(keywords);
        QueryResponse rsp = client.query(query);
        return rsp;
    }
 

public class SolrUtil {
    public static SolrClient client;
    private static String url;
    static {
        url = "http://localhost:8983/solr/how2java";
        client = new HttpSolrClient.Builder(url).build();
    }
 
    public static <T> boolean batchSaveOrUpdate(List<T> entities) throws SolrServerException, IOException {
 
        DocumentObjectBinder binder = new DocumentObjectBinder();
        int total = entities.size();
        int count=0;
        for (T t : entities) {
            SolrInputDocument doc = binder.toSolrInputDocument(t);
            client.add(doc);
            System.out.printf("新增資料到索引中，總共要新增 %d 條記錄，當前新增第%d條 %n",total,++count);
        }
        client.commit();
        return true;
    }
 
    public static QueryResponse query(String keywords,int startOfPage, int numberOfPage) throws SolrServerException, IOException {
        SolrQuery query = new SolrQuery();
        query.setStart(startOfPage);
        query.setRows(numberOfPage);
         
        query.setQuery(keywords);
        QueryResponse rsp = client.query(query);
        return rsp;
    }
 
}
 

public class TestSolr4j {
 
    public static void main(String[] args) throws SolrServerException, IOException {
        //查詢
        QueryResponse queryResponse = SolrUtil.query("name:手機",0,10);
        SolrDocumentList documents= queryResponse.getResults();
        System.out.println("累計找到的條數："+documents.getNumFound());
        if(!documents.isEmpty()){
             
            Collection<String> fieldNames = documents.get(0).getFieldNames();
            for (String fieldName : fieldNames) {
                System.out.print(fieldName+"\t");
            }
            System.out.println();
        }
         
        for (SolrDocument solrDocument : documents) {
             
            Collection<String> fieldNames= solrDocument.getFieldNames();
             
            for (String fieldName : fieldNames) {
                System.out.print(solrDocument.get(fieldName)+"\t");
                 
            }  
            System.out.println();
             
        }
    }
 
}