[ElasticSearch]分析京东商城商品搜索实现|聚合|全文查找|搜索引擎|ES Java High Level Rest Client|ES Java API Client

import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.terms.Terms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;
 
// 构建聚合查询
TermsAggregationBuilder aggregationBuilder = AggregationBuilders
    .terms("brandAgg")
    .field("brandName.keyword")
    .size(10);
 
// 构建高亮查询
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.field("title");
highlightBuilder.preTags("<em>");
highlightBuilder.postTags("</em>");
 
// 构建全文搜索查询
QueryBuilders.multiMatchQuery("searchText", "title", "subTitle");
 
// 以上构建了聚合、高亮和全文搜索的基础查询，下面是查询的具体实现
SearchRequest searchRequest = new SearchRequest("jd_goods");
searchRequest.source(new SearchSourceBuilder()
    .query(QueryBuilders.multiMatchQuery("searchText", "title", "subTitle")) // 全文搜索
    .aggregation(aggregationBuilder) // 聚合
    .highlighter(highlightBuilder) // 高亮
    .sort("saleable", SortOrder.DESC) // 排序
);
 
// 执行查询
SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

这段代码展示了如何在ElasticSearch中使用Java High Level REST Client进行全文搜索、聚合和高亮的查询。首先构建了聚合查询，然后构建了高亮查询，最后结合全文搜索查询，并设置了排序和高亮的参数，最终执行查询并获取结果。