solr的分页查询，

solr的分页查询，

1. package com.solorj.solrj_test;
3. import java.io.IOException;
5. import org.apache.solr.client.solrj.SolrQuery;
6. import org.apache.solr.client.solrj.SolrServerException;
7. import org.apache.solr.client.solrj.impl.HttpSolrClient;
8. import org.apache.solr.client.solrj.response.QueryResponse;
9. import org.apache.solr.common.SolrDocumentList;
11. /
12. * @ClassName: PageDemo
13. * @Description: Solr分页查询
14. * @date
15. */
16. public class PageDemo {
18. // 单点
19. public static final String SOLR_URL = “http://localhost:8983/solr/solr_java”;
21. /
22. * @Description: 查询显示指定行数数据
23. * @param rows
24. * @return
25. /
26. public static SolrDocumentList queryRowsData(int rows){
27. try {
28. HttpSolrClient httpSolrClient = new HttpSolrClient.Builder(SOLR_URL).build();
29. SolrQuery query = new SolrQuery();
30. // 设定查询字段
31. query.set(“q”, "id:");
32. // 设定返回记录数，默认为10条
33. query.setRows(rows);
34. QueryResponse response = httpSolrClient.query(query);
35. SolrDocumentList list = response.getResults();
36. return list;
37. } catch (SolrServerException e) {
38. e.printStackTrace();
39. } catch (IOException e) {
40. e.printStackTrace();
41. }
42. return null;
43. }
45. /**
46. * @Description: 分页查询
47. * @param start
48. * @param rows
49. * @return
50. /
51. public static SolrDocumentList queryPageData(int start,int rows){
52. try {
53. HttpSolrClient httpSolrClient = new HttpSolrClient.Builder(SOLR_URL).build();
54. SolrQuery query = new SolrQuery();
55. //设定查询字段
56. query.set(“q”, "id:");
57. //指定返回结果字段
58. query.setIncludeScore(true);
59. //分页开始页数
60. query.setStart(start);
61. //设定返回记录数，默认为10条
62. query.setRows(rows);
64. QueryResponse response = httpSolrClient.query(query);
65. //获取bean
66. // List<Object> bean = response.getBeans(Object.class);
67. SolrDocumentList list = response.getResults();
69. return list;
71. } catch (Exception e) {
72. e.printStackTrace();
73. }
74. return null;
75. }
78. public static void main(String[] args) {
79. SolrDocumentList list1 = queryRowsData(2);
80. SolrDocumentList list2 = queryPageData(0,5);
81. System.out.println(“list:”+list2.size());
82. }
83. }