day117-商城业务-检索服务-SearchRequest构建-检索+排序、分页、高亮+聚合&测试

最新推荐文章于 2024-06-16 11:24:36 发布

原创

最新推荐文章于 2024-06-16 11:24:36 发布 · 796 阅读

1 ·

CC 4.0 BY-SA版权

文章标签：

#商城业务-检索服务 #构建检索+排序分页、高亮+聚合

本文档详细介绍了如何使用DSL语句在Elasticsearch中实现搜索、排序、分页、高亮和聚合分析。核心代码展示了通过SearchRequest和SearchResponse处理搜索请求，解析结果并封装为SearchResult对象，包括商品、属性、品牌和分类的聚合信息。测试表明，请求参数已正确传递并返回所需数据。

1.DSL语句概览与分析

此篇我要做的就是完成DSL代码层面的实现,大致的结构如下,详细的DSL语句上篇已经贴出来了

包含计算分数的must查询与不计算的filter外面被bool然后最外面被query对象包着

然后是排序，然后是分页，然后是高亮，最后是聚合分析

2.上代码

核心代码如图，包含通过请求参数封装SearchRequest 然后通过返回结果SearchResponse来封装SearchResult以达到页面需要的数据对象

package com.atguigu.gulimall.search.service.impl;

import com.alibaba.fastjson.JSON;
import com.atguigu.common.to.es.SkuEsModel;
import com.atguigu.gulimall.search.config.ElasticConfiguration;
import com.atguigu.gulimall.search.constant.EsConstant;
import com.atguigu.gulimall.search.service.MallSearchService;
import com.atguigu.gulimall.search.vo.SearchParam;
import com.atguigu.gulimall.search.vo.SearchResult;
import org.apache.commons.lang.StringUtils;
import org.apache.lucene.search.join.ScoreMode;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.*;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.bucket.nested.NestedAggregationBuilder;
import org.elasticsearch.search.aggregations.bucket.nested.ParsedNested;
import org.elasticsearch.search.aggregations.bucket.terms.ParsedLongTerms;
import org.elasticsearch.search.aggregations.bucket.terms.ParsedStringTerms;
import org.elasticsearch.search.aggregations.bucket.terms.Terms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightField;
import org.elasticsearch.search.sort.SortOrder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;

/**
 * @author rengang
 * @version 1.0
 * @date 2021/3/31 11:09
 */
@Service
public class MallSearchServiceImpl implements MallSearchService {

    @Autowired
    RestHighLevelClient highLevelClient;

    @Override
    public SearchResult search(SearchParam searchParam) {

        SearchRequest searchRequest =  buildSearchRequest(searchParam);
        SearchResponse searchResponse = null;
        try {
            searchResponse = highLevelClient.search(searchRequest, ElasticConfiguration.COMMON_OPTIONS);