ElastSearch整合SpringBoot模仿京东商城实现关键字高亮显示

前提:下载Elasticsearch服务并开启,使用SpringBoot集成Elasticsearch客户端

用到的技术:Springboot+Vue+Thymeleaf+Elasticsearch

效果如下

接下来上代码(不分前后顺序)

页面跳转controller

package com.wyh.controller;

import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;


@Controller
public class IndexController {
    @GetMapping({"/","/index"})
    public String index() {
        return "index";
    }
}

接口数据请求controller

package com.wyh.controller;

import com.wyh.service.JDContentService;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import javax.annotation.Resource;
import java.io.IOException;
import java.util.List;
import java.util.Map;



//前端请求编写
@RestController
public class JDContentController {

    @Autowired
    private JDContentService jdContentService;
    //测试es批量添加京东数据 restful风格
    @GetMapping("/parse/{keyword}")
    public boolean parse(@PathVariable("keyword") String keyword) throws IOException {
      return  jdContentService.parseContent(keyword);
    }

    //测试查询
    @GetMapping("/search/{keyword}/{pageNo}/{pageSize}")
    public  List> search(@PathVariable("keyword") String keyword,
                                            @PathVariable("pageNo") int pageNo,
                                            @PathVariable("pageSize")int pageSize) throws IOException {
       return  jdContentService.searchPageHighLight(keyword,pageNo,pageSize);

    }


}

京东商品实体

package com.wyh.entity;

import lombok.AllArgsConstructor;
import lombok.Data;
import lombok.NoArgsConstructor;
import org.springframework.stereotype.Component;



@Data
@AllArgsConstructor
@NoArgsConstructor
@Component
public class JDContent {
    private String title;
    private String img;
    private String  price;
    //可以自定义继续加属性
}

京东商品service

package com.wyh.service;

import com.alibaba.fastjson.JSON;
import com.wyh.entity.JDContent;
import com.wyh.utils.HtmlParseUtil;
import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
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.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.TermQueryBuilder;
import org.elasticsearch.search.SearchHit;
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.stereotype.Service;

import javax.annotation.Resource;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.concurrent.TimeUnit;



//业务编写
@Service
public class JDContentService {
    //注入bean
    @Resource
    private RestHighLevelClient client;
    //1 解析数据 放入es索引库
    public boolean parseContent(String keywords) throws IOException {
        ArrayList jdContents = new HtmlParseUtil().parseJD(keywords);
        //把查询并且解析好的数据批量插入到es库
        BulkRequest bulkRequest = new BulkRequest();
        //过期时间2分钟
        bulkRequest.timeout("2m");
        //批量插入数据
        for (int i = 0; i < jdContents.size(); i++) {
            bulkRequest.add(new IndexRequest("jd_goods")
                    //这里就不给id赋值了 随时生成
                    .source(JSON.toJSONString(jdContents.get(i)),XContentType.JSON)
            );
        }
        //执行批量插入请求
        BulkResponse bulk = client.bulk(bulkRequest, RequestOptions.DEFAULT);
        //没有返回失败就是成功
        return !bulk.isFragment();

    }
    //2 获取这些数据  实现搜索功能
    public List> searchPage(String keyword,int pageNo,int pageSize) throws IOException {
        //当前页数第一条
        if(pageNo<=1){
            pageNo=1;
        }
        //条件搜索
        SearchRequest searchRequest = new SearchRequest("jd_goods");
        //构建查询
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        //查询条件
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", keyword);
        //分页
        searchSourceBuilder.from(pageNo);
        searchSourceBuilder.size(pageSize);
        //精准匹配关键字
        SearchSourceBuilder query = searchSourceBuilder.query(termQueryBuilder);
        //超时时间
        searchSourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));
        //执行搜索
        searchRequest.source(searchSourceBuilder);
        SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
        //创建map 用于返回
        ArrayList> arrayList = new ArrayList();
        //解析结果
        for (SearchHit document : searchResponse.getHits().getHits()) {
            arrayList.add(document.getSourceAsMap());
        }
        return arrayList;
    }

    //3 实现搜索高亮的功能
    public List> searchPageHighLight(String keyword,int pageNo,int pageSize) throws IOException {
        //当前页数第一条
        if(pageNo<=1){
            pageNo=1;
        }
        //条件搜索
        SearchRequest searchRequest = new SearchRequest("jd_goods");
        //构建查询
        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        //查询条件
        TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery("title", keyword);
        //分页
        searchSourceBuilder.from(pageNo);
        searchSourceBuilder.size(pageSize);
        //精准匹配关键字
        SearchSourceBuilder query = searchSourceBuilder.query(termQueryBuilder);
        //超时时间
        searchSourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));

        //高亮显示
        HighlightBuilder highlightBuilder = new HighlightBuilder();
        //让标题高亮
        highlightBuilder.field("title");
        //高亮的前缀
        highlightBuilder.preTags("");
        //高亮的后缀
        highlightBuilder.postTags("");
        //关闭多个高亮
        highlightBuilder.requireFieldMatch(false);
        searchSourceBuilder.highlighter(highlightBuilder);

        //执行搜索
        searchRequest.source(searchSourceBuilder);
        SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
        //创建map 用于返回
        ArrayList> arrayList = new ArrayList();
        //解析结果
        for (SearchHit document : searchResponse.getHits().getHits()) {
            //获取高亮的字段
            Map highlightFields = document.getHighlightFields();
            HighlightField title = highlightFields.get("title");
            //原来的结果
            Map sourceAsMap = document.getSourceAsMap();
            //解析高亮的字段,将原来的字段换成高亮的字段即可
            //如果高亮字段存在
            if(title!=null){
                Text[] fragments = title.fragments();
                //新标题
                String newTitle="";
                for (Text fragment : fragments) {
                    newTitle+=fragment;
                }
                //高亮字段替换原来的字段内容即可
                sourceAsMap.put("title",newTitle);
            }
            arrayList.add(sourceAsMap);
        }
        return arrayList;
    }
}

解析页面工具包

package com.wyh.utils;

import com.wyh.entity.JDContent;
import org.jsoup.Jsoup;
import org.jsoup.nodes.Document;
import org.jsoup.nodes.Element;
import org.jsoup.select.Elements;
import org.springframework.stereotype.Component;

import java.io.IOException;
import java.net.MalformedURLException;
import java.net.URL;
import java.util.ArrayList;
import java.util.List;



@Component
public class HtmlParseUtil {
    //public static void main(String[] args) throws IOException {
    //    //ArrayList jdContents = parseJD("你好");
    //    //for (JDContent jdContent : jdContents) {
    //    //    System.out.println(jdContent);
    //    //}
    //    获取请求 前提需要联网
    //    //String url="https://search.jd.com/Search?keyword=java";
    //    解析网页 jsoup返回的document对象就是浏览器document对象
    //    所有在js中可以使用的方法,这里都能使用 比如document.getElementById()
    //    //Document document = Jsoup.parse(new URL(url), 30000);
    //    获取我们想要的数据
    //    //Element element = document.getElementById("J_goodsList");
    //    //System.out.println(element.html());
    //    获取全部的li元素
    //    //Elements elements = element.getElementsByTag("li");
    //    //System.out.println(elements);
    //    获取元素中的内容
    //    //for (Element el : elements) {
    //    //    //图片
    //    //    //为什么明明可以看到图片的src但是就是获取不到呢
    //    //    //这里面用到一个懒加载机制 真正的图片是放在source-data-lazy-img(data-lazy-img)中的
    //    //    String img = el.getElementsByTag("img").eq(0).attr("data-lazy-img");
    //    //    //价格
    //    //    String price = el.getElementsByClass("p-price").eq(0).text();
    //    //    //标题
    //    //    String title = el.getElementsByClass("p-name").eq(0).text();
    //    //    System.out.println("-------------------------------");
    //    //    System.out.println(img);
    //    //    System.out.println(price);
    //    //    System.out.println(title);
    //    //
    //    //}
    //}
    //解析京东请求
    public ArrayList parseJD(String keywords) throws IOException {
        //获取请求 前提需要联网
        String url="https://search.jd.com/Search?keyword="+keywords;
        //解析网页 jsoup返回的document对象就是浏览器document对象
        //所有在js中可以使用的方法,这里都能使用 比如document.getElementById()
        Document document = Jsoup.parse(new URL(url), 30000);
        //获取我们想要的数据
        Element element = document.getElementById("J_goodsList");
        System.out.println(element.html());
        //获取全部的li元素
        Elements elements = element.getElementsByTag("li");
        //京东实体对象集合
        ArrayList jdContents = new ArrayList<>();
        //获取元素中的内容
        for (Element el : elements) {
            //图片
            //为什么明明可以看到图片的src但是就是获取不到呢
            //这里面用到一个懒加载机制 真正的图片是放在source-data-lazy-img(data-lazy-img)中的
            String img = el.getElementsByTag("img").eq(0).attr("data-lazy-img");
            //价格
            String price = el.getElementsByClass("p-price").eq(0).text();
            //标题
            String title = el.getElementsByClass("p-name").eq(0).text();
            System.out.println("-------------------------------");
            System.out.println(img);
            System.out.println(price);
            System.out.println(title);
            //创建京东实体对象
            JDContent jdContent = new JDContent();
            jdContent.setImg(img);
            jdContent.setTitle(title);
            jdContent.setPrice(price);
            //把全部属性放进集合里面
            jdContents.add(jdContent);
        }
        return jdContents;
    }
}

es配置

package com.wyh.config;

import org.apache.http.HttpHost;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;




//表面这是一个配置文件
@Configuration
public class ElasticSearchClientConfig {
    //配置bean  注册 rest高级客户端
    @Bean
    public RestHighLevelClient restHighLevelClient(){
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(
                        //ip  端口 协议
                        //一定要保证es服务是开启的
                        new HttpHost("127.0.0.1",9200,"http")));
        return client;
    }
}

新建一个索引库用来存放京东数据

springboot application配置

#端口
server.port=8080
#关闭thymeleaf缓存
spring.thymeleaf.cache=false

页面





    
    仿京东高亮搜索
    
    




    

        
        
            
                
                    
                    
                        
                    

                    

                        
                        
                            
                                
                                    京东搜索
                                    
                                        
                                            
                                                
                                            
                                        
                                        
                                    
                                
                            
                            
                                学习
                                摸鱼
                                睡觉
                                LOL
                                上班
                            
                        
                    
                
            
        

        
        
            
                
                
                    
                        
                            
                                
                                    品牌
                                
                                
                                    
                                         魏一鹤 
                                         Java 
                                    
                                
                            
                        
                    
                

                
                
                    综合
                    人气
                    新品
                    销量
                    价格
                

                
                

                    
                        
                            
                            
                                
                                    
                                
                            
                            
                            
                                ¥{{result.price}}
                            
                            
                            
                                
                            
                            
                            
                                店铺:魏一鹤的小店 
                            
                            
                            
                                月成交999笔
                                评价 3

pom



    4.0.0
    
        org.springframework.boot
        spring-boot-starter-parent
        2.6.6
         
    
    com
    wyh
    0.0.1-SNAPSHOT
    wyh
    Demo project for Spring Boot
    
        1.8
        
        7.6.1
    
    
        
        
        
            org.jsoup
            jsoup
            1.10.2
        


        
        
            org.springframework.boot
            spring-boot-starter-thymeleaf
        
        
            org.springframework.boot
            spring-boot-starter-test
            test
        
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            org.springframework.boot
            spring-boot-starter-data-elasticsearch
        
        
        
            org.springframework.boot
            spring-boot-starter-web
        
        
        
            org.projectlombok
            lombok
            1.16.10
        
        
        
            com.alibaba
            fastjson
            1.2.70
        



            

            
                
                    
                        org.springframework.boot
                        spring-boot-maven-plugin

测试接口
测试批量插入数据 java

成功插入到数据库

再插入点vue数据

测试查询接口

引入vue.js和axios.js

项目目录

ElastSearch整合SpringBoot模仿京东商城实现关键字高亮显示

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