ES 高亮搜素

- 日理万妓 2023-02-11 11:25 12阅读 0赞

public List<ContentES> getAll(SearchReq req) throws IOException {
    
    
        String accountName = UserUtil.getUser().getUserName();
        SearchRequest searchRequest = new SearchRequest(SearchConstant.CONTENT_INDEX_NAME).types(SearchConstant.CONTENT_INDEX_TYPE);
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        //模糊搜索
        QueryStringQueryBuilder queryBuilder = new QueryStringQueryBuilder(req.getKeyWord());
        queryBuilder.field(SearchConstant.TITLE);
    
    
        //条件筛选具体那个字段为指定值
      /*  BoolQueryBuilder boolBuilder = QueryBuilders.boolQuery();
        boolBuilder.must(
                QueryBuilders.matchQuery(SearchConstant.ACCOUNTNAME, accountName)
        );*/
        //构建高亮体
        HighlightBuilder highlightBuilder = new HighlightBuilder();
    
        highlightBuilder.field(SearchConstant.TITLE);
    
        //搜索体（添加多个搜索参数）
        searchSourceBuilder.highlighter(highlightBuilder);
        searchSourceBuilder.query(queryBuilder);
        searchRequest.source(searchSourceBuilder);
        SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        SearchHit[] hits = response.getHits().getHits();
        List<ContentES> list = new ArrayList<>();
        for (SearchHit hit : response.getHits()) {
    
            //将文档中的每一个对象转换json串值
            String sourceAsString = hit.getSourceAsString();
            Map<String, HighlightField> highlightFields = hit.getHighlightFields();
            HighlightField titleField = highlightFields.get("title");
            if (titleField != null) {
                Text[] fragments = titleField.fragments();
                String title = "";
                for (Text text : fragments) {
                    title += text;
                }
                //将json串值转换成对应的实体对象
                ContentES contentES = JSON.parseObject(sourceAsString, ContentES.class);
                contentES.setTitle(title);
                list.add(contentES);
    
            }
            return list;
        }
        return list;
    
    }