put请求添加索引

http://192.159.138.73:9200/app_info_article

请求内容

{
    "mappings":{
        "properties":{
            "id":{
                "type":"long"
            },
            "publishTime":{
                "type":"date"
            },
            "layout":{
                "type":"integer"
            },
            "images":{
                "type":"keyword",
                "index": false
            },
            "staticUrl":{
                "type":"keyword",
                "index": false
            },
            "authorId": {
                "type": "long"
            },
            "authorName": {
                "type": "text"
            },
            "title":{
                "type":"text",
                "analyzer":"ik_smart"
            },
            "content":{
                "type":"text",
                "analyzer":"ik_smart"
            }
        }
    }
}

其他操作

GET请求查询映射：http://192:168:200:129:9200/app_info_article

DELETE请求删除索引及映射：http://192:168:200:129:9200/app_info_article

GET请求查询所有文档：http://192:168:200:129:9200/app_info_article/_search

SpringBoot 集成ES

导入依赖

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.12.1</version>
</dependency>
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>7.12.1</version>
</dependency>
<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>7.12.1</version>
</dependency>

导入数据到es

@SpringBootTest
@RunWith(SpringRunner.class)
public class ApArticleTest {

    @Autowired
    private ApArticleMapper apArticleMapper;

    @Autowired
    private RestHighLevelClient restHighLevelClient;


    /**
     * 注意：数据量的导入，如果数据量过大，需要分页导入
     * @throws Exception
     */
    @Test
    public void init() throws Exception {

        //1.查询所有符合条件的文章数据
        List<SearchArticleVo> searchArticleVos = apArticleMapper.loadArticleList();

        //2.批量导入到es索引库

        BulkRequest bulkRequest = new BulkRequest("app_info_article");

        for (SearchArticleVo searchArticleVo : searchArticleVos) {

            IndexRequest indexRequest = new IndexRequest().id(searchArticleVo.getId().toString())
                    .source(JSON.toJSONString(searchArticleVo), XContentType.JSON);

            //批量添加数据
            bulkRequest.add(indexRequest);

        }
        restHighLevelClient.bulk(bulkRequest, RequestOptions.DEFAULT);

    }

}

查询示例

@Service
@Slf4j
public class ArticleSearchServiceImpl implements ArticleSearchService {

    @Autowired
    private RestHighLevelClient restHighLevelClient;

    @Autowired
    private ApUserSearchService apUserSearchService;

    /**
     * es文章分页检索
     *
     * @param dto
     * @return
     */
    @Override
    public ResponseResult search(UserSearchDto dto) throws IOException {

        //1.检查参数
        if(dto == null || StringUtils.isBlank(dto.getSearchWords())){
            return ResponseResult.errorResult(AppHttpCodeEnum.PARAM_INVALID);
        }

        ApUser user = AppThreadLocalUtil.getUser();

        //异步调用 保存搜索记录
        if(user != null && dto.getFromIndex() == 0){
            apUserSearchService.insert(dto.getSearchWords(), user.getId());
        }


        //2.设置查询条件
        SearchRequest searchRequest = new SearchRequest("app_info_article");
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

        //布尔查询
        BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();

        //关键字的分词之后查询
        QueryStringQueryBuilder queryStringQueryBuilder =
                QueryBuilders
                .queryStringQuery(dto.getSearchWords())
                .field("title")
                .field("content")
                .defaultOperator(Operator.OR);
        boolQueryBuilder.must(queryStringQueryBuilder);

        //查询小于mindate的数据
        RangeQueryBuilder rangeQueryBuilder =
                QueryBuilders
                .rangeQuery("publishTime")
                .lt(dto.getMinBehotTime().getTime());
        boolQueryBuilder.filter(rangeQueryBuilder);

        //分页查询
        searchSourceBuilder.from(0);
        searchSourceBuilder.size(dto.getPageSize());

        //按照发布时间倒序查询
        searchSourceBuilder.sort("publishTime", SortOrder.DESC);

        //设置高亮  title
        HighlightBuilder highlightBuilder = new HighlightBuilder();
        highlightBuilder.field("title");
        highlightBuilder.preTags("<font style='color: red; font-size: inherit;'>");
        highlightBuilder.postTags("</font>");
        searchSourceBuilder.highlighter(highlightBuilder);


        searchSourceBuilder.query(boolQueryBuilder);
        searchRequest.source(searchSourceBuilder);
        SearchResponse searchResponse = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);


        //3.结果封装返回

        List<Map> list = new ArrayList<>();

        SearchHit[] hits = searchResponse.getHits().getHits();
        for (SearchHit hit : hits) {
            String json = hit.getSourceAsString();
            Map map = JSON.parseObject(json, Map.class);
            //处理高亮
            if(hit.getHighlightFields() != null && hit.getHighlightFields().size() > 0){
                Text[] titles = hit.getHighlightFields().get("title").getFragments();
                String title = StringUtils.join(titles);
                //高亮标题
                map.put("h_title",title);
            }else {
                //原始标题
                map.put("h_title",map.get("title"));
            }
            list.add(map);
        }

        return ResponseResult.okResult(list);

    }
}

相关文章

ES 基本操作：https://juejin.cn/post/7243828605045047357