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所谓高亮#xff0c;就是使用特别的样式修饰某字段中包含的搜索关键字。
需求#xff1a;实现搜索高亮#xff0c;商品名称使用红色显示搜索关键字。
1.1.2实现思路
使用默认高亮显示来获取每个搜索命中title字段的高亮显示#xff0c;在指定title字段的…1.1.1 需求分析
所谓高亮就是使用特别的样式修饰某字段中包含的搜索关键字。
需求实现搜索高亮商品名称使用红色显示搜索关键字。
1.1.2实现思路
使用默认高亮显示来获取每个搜索命中title字段的高亮显示在指定title字段的查询请求中包含高亮显示对象。
1.1.3 代码实现
(1)changgou_service_search工程接口 SearchService 新增方法定义
/*** 全文检索* param paramMap 查询参数* return*/public Map search(MapString, String paramMap) throws Exception;(2)SearchServiceImpl 实现此方法实现关键字查询
package com.changgou.service;import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.MatchQueryBuilder;import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightField;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;/*** author lijunxuan* date Created in 2019/7/17 19:00* description * version: 1.0*/
Service
public class SearchServiceImpl implements SearchService {Autowiredprivate RestHighLevelClient restHighLevelClient;Overridepublic Map search(MapString, String paramMap) throws Exception {MapString,Object resultMapnew HashMap();/*** 1.获取查询参数*/String keywords paramMap.get(keywords);/*** 2.获取查询需要的对象*///创建查询对象指定索引库名称_indexSearchRequest searchRequest new SearchRequest(sku);//指定查询索引库中的类型searchRequest.types(doc);//创建查询构造对象SearchSourceBuilder searchSourceBuilder new SearchSourceBuilder();//创建布尔查询组合查询对象BoolQueryBuilder boolQueryBuilder QueryBuilders.boolQuery();/*** 3.设置根据关键字查询关键字需要中文分词*/MatchQueryBuilder nameQueryBuilder QueryBuilders.matchQuery(name, keywords);//根据名称查询条件放入组合查询对象中boolQueryBuilder.must(nameQueryBuilder);/*** 4. 设置高亮查询*/HighlightBuilder highlightBuilder new HighlightBuilder();//设置在哪个域中高亮显示highlightBuilder.field(name);//设置高亮前缀highlightBuilder.preTags(em style\color:red\);//设置高亮后缀highlightBuilder.postTags(/em);searchSourceBuilder.highlighter(highlightBuilder);/*** 12.查询并返回的结果*///将组合查询条件放入查询构造对象中searchSourceBuilder.query(boolQueryBuilder);//将组合查询条件放入查询请求中searchRequest.source(searchSourceBuilder);SearchResponse searchResponse restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);/*** 13. 获取查询到的结果集, 封装后返回*/SearchHits searchHits searchResponse.getHits();//获取查询到的总条数long totalHits searchHits.getTotalHits();resultMap.put(total,totalHits);//获取查询结果集SearchHit[] hits searchHits.getHits();List rows new ArrayList();if (hits!null){for (SearchHit hit : hits) {//获取普通的查询出来的一条数据(不带高亮名称)MapString, Object sourceAsMap hit.getSourceAsMap();//获取高亮结果MapString, HighlightField highlightFields hit.getHighlightFields();if (highlightFields ! null) {HighlightField highlightField highlightFields.get(name);Text[] fragments highlightField.fragments();if (fragments ! null fragments.length 0) {//将高亮名称放入查询出来的数据中, 覆盖原来不带高亮的名称sourceAsMap.put(name, fragments[0].toString());}}rows.add(sourceAsMap);}}resultMap.put(rows,rows);return resultMap;}
}
(3)changgou_service_search新增SearchController类
package com.changgou.controller;import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.service.EsManagerService;import com.changgou.service.SearchService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.RestController;import java.util.Map;/*** author lijunxuan* date Created in 2019/7/14 21:41* description * version: 1.0*/
RestController
RequestMapping(/search)
public class SearchController {Autowiredprivate SearchService searchService;/*** 全文检索* return*/GetMappingpublic Result search(RequestParam MapString, String paramMap) throws Exception {Map resultMap searchService.search(paramMap);return new Result(true, StatusCode.OK, 查询成功, resultMap);}
}
1.1.4测试结果
