spring cloud 集成elasticsearch 实现分词查询和模糊查询

使用elasticsearch 主要的一个场景就是分词查询，我以电商搜索商品为例：搜索“精华乳液套装”

搜索引擎（ik分词器）会拆成 精华、乳液、套装分别去匹配字段，会根据匹配度计算分值

条件组装

            BoolQueryBuilder productNameIKBoolBuilder = QueryBuilders.boolQuery();                                                  
           productNameIKBoolBuilder.must(QueryBuilders.matchQuery("productName.keyword_ik", searchRequestVO.getKeyword()));

            // 设置是否按查询匹配度排序
            searchSourceBuilder.minScore(0.25f);
            searchSourceBuilder.explain(true);
            Integer startPage = 1;
            Integer pageSize = 10;
            SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
            searchSourceBuilder.from(startPage).size(pageSize);
            //是否显示全部总数
            searchSourceBuilder.trackTotalHits(true);
            // 设置是否按查询匹配度排序
            searchSourceBuilder.minScore(0.25f);
            searchSourceBuilder.explain(true);
            // Function Score Query
            FunctionScoreQueryBuilder functionScoreQueryBuilder = QueryBuilders.functionScoreQuery(productNameIKBoolBuilder , ScoreFunctionBuilders.weightFactorFunction(1000));
            searchSourceBuilder.query(functionScoreQueryBuilder);
            SearchRequest searchRequest = new SearchRequest(indexEnum.getCode() + getActived());
            searchRequest.source(searchSourceBuilder);
            log.info("执行查询:{}", searchSourceBuilder.toString());
            SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
            
            long totalHits = searchResponse.getHits().getTotalHits().value;
            long length = searchResponse.getHits().getHits().length;
            log.info("查询到[{}]条数据,处理数据条数[{}]", totalHits, length);

不使用分词查询， elasticsearch也提供模糊查询功能，*表示任意字符

                BoolQueryBuilder boolBuilderGoodsName = QueryBuilders.boolQuery();
                boolBuilderGoodsName.must(QueryBuilders.wildcardQuery("productName", "*"+searchRequestVO.getKeyword()+"*"));