2-3 ES实现高亮

编码

   /***
     * @description: 多字段分词检索，条件过滤，分页，排序，高亮
     * @return: void
     **/
    @Test
    public void high() {

        //高亮的字段
        HighlightBuilder.Field nameField = new HighlightBuilder.Field("name").requireFieldMatch(false);//开启多字段同时高亮
        nameField.preTags("");
        nameField.postTags("");

        //不建议使用 *
        HighlightBuilder.Field contentField = new HighlightBuilder.Field("content").requireFieldMatch(false);//开启多字段同时高亮
        contentField.preTags("");
        contentField.postTags("");

        //构建查询条件
        NativeSearchQuery build = new NativeSearchQueryBuilder()
                .withIndices("alibaba")//book 对象已有映射说明，可以不写
                .withTypes("book")
                .withQuery(QueryBuilders.queryStringQuery("这是").field("name").field("content"))//分词检索
                .withFilter(QueryBuilders.rangeQuery("price").gt(8))//设置过滤条件
                .withSort(new FieldSortBuilder("price").order(SortOrder.DESC))
                .withPageable(PageRequest.of(0, 2))
                .withHighlightFields(nameField, contentField)
                .build();


        //对查询结果进行高亮处理
        AggregatedPage books = elasticsearchTemplate.queryForPage(build, Book.class, new SearchResultMapper() {
            @Override
            public  AggregatedPage mapResults(SearchResponse searchResponse, Class aClass, Pageable pageable) {
                SearchHit[] hits = searchResponse.getHits().getHits();
                List result = Lists.newArrayList();

                for (SearchHit s :
                        hits) {
                    //获取原始数据
//                    System.out.println(s.getSourceAsString());
                    Map sourceAsMap = s.getSourceAsMap();

                    //获取高亮map
                    Map highlightFields = s.getHighlightFields();

                    Book book = new Book();
                    book.setId(sourceAsMap.get("id").toString());
                    book.setName(sourceAsMap.get("name").toString());
                    //替换高亮字段
                    if (highlightFields.containsKey("name")) {
                        book.setName(highlightFields.get("name").fragments()[0].toString());
                    }
                    book.setAuthor(sourceAsMap.get("author").toString());
                    book.setContent(sourceAsMap.get("content").toString());
                    //替换高亮字段
                    if (highlightFields.containsKey("content")) {
                        book.setContent(highlightFields.get("content").fragments()[0].toString());
                    }
                    book.setPrice(new BigDecimal(sourceAsMap.get("id").toString()));
                    book.setPubDate(new Date(Long.valueOf(sourceAsMap.get("pubDate").toString())));

                    result.add(book);
                }

                return new AggregatedPageImpl((List) result);
            }
        });

        //直接遍历出聚合查询的元素
        books.forEach(a -> {
            System.out.println(a);
        });
    }

测试

image.png

image.png

页面处理

v-html 进行解析