ES简单教程（三）使用ElasticsearchRestTemplate多条件分页查询（简单版）_elasticsearchresttemplate 分页

TIPS：本文例子为常规单字段的匹配、单字段的分词匹配查询。

package com.test.impl;

/**
 * TestIndex实现类impl，实现多条件分页查询
 */
@Service
public class TestIndexServiceImpl implements TestIndexService {

    private static final Logger LOGGER = LoggerFactory.getLogger(TestIndexServiceImpl.class);

    @Autowired
    private ElasticsearchRestTemplate elasticsearchRestTemplate;

	//TestIndexSearchQuery query为条件查询对象，封装了一些需要查询的字段
    @Override
    public Page<TestIndex> search(TestIndexSearchQuery query) {
        Integer pageNum = query.getPageNum();
        Integer pageSize = query.getPageSize();

        //组装查询条件
        BoolQueryBuilder queryBuilder = QueryBuilders.boolQuery();
        //user_id = Xa
        if(StringUtils.isNotBlank(query.getXa())){
            queryBuilder.must(termQuery("user_id", query.getXa()));
        }
		//这里的say_words的ES type为text，是支持分词查询的
        if(StringUtils.isNotBlank(query.getXb())){
            queryBuilder.must(queryStringQuery(query.getXb()).field("say_words"));
        }
		//载入查询对象
        NativeSearchQuery build = new NativeSearchQueryBuilder()
                .withQuery(queryBuilder)
                .withSort(SortBuilders.fieldSort("say_time").order(SortOrder.DESC)) //排序
                .withPageable(PageRequest.of(pageNum, pageSize))
                .withHighlightFields(//字段高亮设值
                        new HighlightBuilder.Field("say_words").preTags("<em>").postTags("</em>")
//                        new HighlightBuilder.Field("say_words").preTags("<span style='color:blue'>").postTags("</span>")
                )
                .build();
        LOGGER.debug("模糊查询的语句：", build.getQuery().toString());

        SearchHits<TestIndex> search = elasticsearchRestTemplate.search(build, TestIndex.class);
        SearchPage<TestIndex> page = SearchHitSupport.searchPageFor(search, build.getPageable());

        //高亮结果集，也可以用page.getHighlightFields()获取
        List<Seek> list = new ArrayList<>();
        for (SearchHit<TestIndex> each : page) {
            TestIndex vo = each.getContent();
            //高亮设值
            if (each.getHighlightFields().get("say_words") != null) {
                vo.setSeek_title(each.getHighlightFields().get("say_words").get(0));
            }
            list.add(vo);
        }
        //组装分页对象
        Page<TestIndex> pageInfo = new PageImpl<>(list, build.getPageable(), search.getTotalHits());
//        PageImpl<TestIndex> pageInfo = new PageImpl<TestIndex>(list, build.getPageable(), search.getTotalHits());
        return pageInfo;
    }

}

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