Es elasticsearch 二十站内搜索示例高亮内容 java springboot 实现-Toy模板网

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实现思路

代码

全依赖

参数对象

搜索实现代码全代码

日志

重点

权重

分页

入参高亮数据处理

返回出参数据处理

实现思路

构建请求

请求体设置搜索字段

返回数据解析获取高亮高亮通过设置标签和class 前端设置class字体颜色也可直接写在后端

代码

全依赖

package com.esbase.fintech.ais;

import lombok.Data;
import lombok.ToString;
import lombok.extern.slf4j.Slf4j;
import org.apache.http.HttpHost;
import org.elasticsearch.action.ActionListener;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.CreateIndexResponse;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.xcontent.ToXContent;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.MultiMatchQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.aggregations.Aggregation;
import org.elasticsearch.search.aggregations.AggregationBuilder;
import org.elasticsearch.search.aggregations.AggregationBuilders;
import org.elasticsearch.search.aggregations.Aggregations;
import org.elasticsearch.search.aggregations.bucket.histogram.*;
import org.elasticsearch.search.aggregations.bucket.terms.Terms;
import org.elasticsearch.search.aggregations.bucket.terms.TermsAggregationBuilder;
import org.elasticsearch.search.aggregations.metrics.*;
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.junit.jupiter.api.Test;
import org.junit.platform.commons.util.StringUtils;
import org.springframework.boot.test.context.SpringBootTest;

import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

参数对象

/**
 * 根据站内规则设置参数对象
 * @author jianghaoyu
 */
@Data
@ToString
static class CourseSearchParam{
    String keyword;//关键词
    String mt; //一级分类
    String st;//二级分类
    String grade;//难度等级
    Float priceMin;//价格区间
    Float priceMax;
    String sort;//排序字段
    String filter;//过滤字段
}

搜索实现代码全代码


@Test
public void jh6() throws IOException {
    CourseSearchParam courseSearchParam = new CourseSearchParam();
    courseSearchParam.setKeyword("红色");
    query(1, 20, courseSearchParam);

}

public void query(int page, int size, CourseSearchParam courseSearchParam) throws IOException {
    if (courseSearchParam == null) {
        courseSearchParam = new CourseSearchParam();
    }
    SearchRequest searchRequest = new SearchRequest("tvs");
    SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();

    //过滤字段
    String[] sArr = "brand,color,price,sold_date".split(",");
    searchSourceBuilder.fetchSource(sArr, new String[]{});

    //查询
    BoolQueryBuilder bqb = QueryBuilders.boolQuery();
    if (StringUtils.isNotBlank(courseSearchParam.getKeyword())) {//如果关键词存在进入
        //如果这几个字段中匹配达到70%  如果name中有提升10倍
        MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery(courseSearchParam.getKeyword(),
                "brand", "color").minimumShouldMatch("20%").field("brand", 10);//如果name 中有提示10倍
        bqb.must(multiMatchQueryBuilder);
    }
    //增加字段级别条件
    if (StringUtils.isNotBlank(courseSearchParam.getMt())) {//一级分类
        bqb.filter(QueryBuilders.termQuery("mt", courseSearchParam.getMt()));
    }
    if (StringUtils.isNotBlank(courseSearchParam.getSt())) {//二级分类
        bqb.filter(QueryBuilders.termQuery("st", courseSearchParam.getSt()));
    }
    if (StringUtils.isNotBlank(courseSearchParam.getGrade())) {//难度等级
        bqb.filter(QueryBuilders.termQuery("grade", courseSearchParam.getGrade()));
    }

    searchSourceBuilder.query(bqb);

    //分页
    searchSourceBuilder.from((page - 1) * size);
    searchSourceBuilder.size(size);

    //设置 高亮 前端使用对应的class
    HighlightBuilder highlightBuilder = new HighlightBuilder();
    highlightBuilder.preTags("<font class='esLight'>");
    highlightBuilder.postTags("</font>");
    //高亮字段
    highlightBuilder.fields().add(new HighlightBuilder.Field("color"));
    searchSourceBuilder.highlighter(highlightBuilder);

    searchRequest.source(searchSourceBuilder);

    SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

    //

    //看结果
    SearchHits hits = searchResponse.getHits();
    log.info(hits.getTotalHits().value + "");
    for (SearchHit key : hits.getHits()) {
        Map<String, Object> sourceAsMap = key.getSourceAsMap();
        log.info(key.getId() + key.getSourceAsMap().get("brand") + key.getSourceAsMap().get("color"));

        String brand = (String) sourceAsMap.get("brand");

        //设置高亮
        //取出高亮字name
        Map<String, HighlightField> highlightFields = key.getHighlightFields();
        if (highlightFields != null) {
            HighlightField hfn = highlightFields.get("color");
            if (hfn != null) {
                Text[] fragments = hfn.fragments();
                StringBuffer stringBuffer = new StringBuffer();
                for (Text text : fragments) {
                    stringBuffer.append(text);
                }
                log.info("高亮："+stringBuffer.toString());
                brand = stringBuffer.toString();
            }
        }
        log.info("brand = " + brand);
    }
}

日志


23-06-07.16:29:07.024 [main            ] INFO  SpringBootEsApplicationTestsGj  - 3
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 1天虹红色
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 高亮：<font class='esLight'>红色</font>
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - brand = <font class='esLight'>红色</font>
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 3天虹红色
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 高亮：<font class='esLight'>红色</font>
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - brand = <font class='esLight'>红色</font>
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 4天虹红色
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - 高亮：<font class='esLight'>红色</font>
23-06-07.16:29:07.038 [main            ] INFO  SpringBootEsApplicationTestsGj  - brand = <font class='esLight'>红色</font>

重点

权重

BoolQueryBuilder bqb = QueryBuilders.boolQuery();
if (StringUtils.isNotBlank(courseSearchParam.getKeyword())) {//如果关键词存在进入
    //如果这几个字段中匹配达到70%  如果name中有提升10倍
    MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery(courseSearchParam.getKeyword(),
            "brand", "color").minimumShouldMatch("20%").field("brand", 10);//如果name 中有提示10倍
    bqb.must(multiMatchQueryBuilder);
}

分页


//分页
searchSourceBuilder.from((page - 1) * size);
searchSourceBuilder.size(size);

入参高亮数据处理


//设置 高亮 前端使用对应的class
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.preTags("<font class='esLight'>");
highlightBuilder.postTags("</font>");
//高亮字段
highlightBuilder.fields().add(new HighlightBuilder.Field("color"));
searchSourceBuilder.highlighter(highlightBuilder);

返回出参数据处理

String brand = (String) sourceAsMap.get("brand");

//设置高亮
//取出高亮字name
Map<String, HighlightField> highlightFields = key.getHighlightFields();
if (highlightFields != null) {
    HighlightField hfn = highlightFields.get("color");
    if (hfn != null) {
        Text[] fragments = hfn.fragments();
        StringBuffer stringBuffer = new StringBuffer();
        for (Text text : fragments) {
            stringBuffer.append(text);
        }
        log.info("高亮："+stringBuffer.toString());
        brand = stringBuffer.toString();
    }
}
log.info("brand = " + brand);

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