java实现es的search和结果处理

 @Test
    void testMatchAll() throws IOException {
        SearchRequest request = new SearchRequest("hotel");
        request.source().query(QueryBuilders.matchAllQuery());
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        handleResponse(response);
    }

    @Test
    void testMatch() throws IOException {
        SearchRequest request = new SearchRequest("hotel");
        request.source().query(QueryBuilders.matchQuery("all","如家"));
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        handleResponse(response);
    }

    @Test
    void testBool() throws IOException {
        SearchRequest request = new SearchRequest("hotel");
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        boolQuery.must(QueryBuilders.termQuery("city","上海"));
        boolQuery.filter(QueryBuilders.rangeQuery("price").lte(250));
        request.source().query(boolQuery);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        handleResponse(response);
    }

    @Test
    void testPageAndSort() throws IOException {
        int page=2,size=5;
        SearchRequest request = new SearchRequest("hotel");
        request.source().query(QueryBuilders.matchAllQuery());
        request.source().sort("price", SortOrder.ASC);
        request.source().from((page-1)*size).size(size);
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        handleResponse(response);
    }

    @Test
    void testHighLight() throws IOException {
        SearchRequest request = new SearchRequest("hotel");
        request.source().query(QueryBuilders.matchQuery("all","如家"));
        request.source().highlighter(new HighlightBuilder().field("name").requireFieldMatch(false));
        SearchResponse response = client.search(request, RequestOptions.DEFAULT);
        handleResponse(response);
    }

    private static void handleResponse(SearchResponse response) {
        SearchHits searchHits = response.getHits();
        TotalHits total = searchHits.getTotalHits();
        System.out.println(total);
        SearchHit[] hits = searchHits.getHits();
        for (SearchHit hit : hits) {
            String json = hit.getSourceAsString();
            HotelDoc hotelDoc = JSON.parseObject(json, HotelDoc.class);
            Map highlightFields = hit.getHighlightFields();
            if(!CollectionUtils.isEmpty(highlightFields)){
                HighlightField highlightField = highlightFields.get("name");
                if (highlightField != null) {
                    String name = highlightField.getFragments()[0].string();
                    hotelDoc.setName(name);
                }
            }
            System.out.println(hotelDoc);
        }
    }

    @BeforeEach
    void setUp(){
        this.client=new RestHighLevelClient(RestClient.builder(
                HttpHost.create("http://192.168.25.100:9200")
        ));
    }

    @AfterEach
    void tearDown() throws IOException {
        this.client.close();
    }