springboot整合es实现curd

1.导入包

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>6.4.2</version>
</dependency>

<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>transport</artifactId>
    <version>6.4.2</version>
    <exclusions>
        <exclusion>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
        </exclusion>
    </exclusions>
</dependency>

<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>fastjson</artifactId>
    <version>1.2.39</version>
</dependency>

2.配置es连接配置类

package com.http.config;

import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.TransportAddress;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import java.net.InetAddress;
import java.net.UnknownHostException;

@Configuration
public class ElasticSearchConfig  {

    @Bean
    public static TransportClient getConnection() throws UnknownHostException {
        Settings settings = Settings.builder().put("cluster.name", "elasticsearch").build();
        TransportClient      client= new PreBuiltTransportClient(settings).addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"), 9300));
        return client;
    }

}


3.实现controller

package com.http.controller;
/*
 * @author allen
 * @version v1.0
 */


import com.alibaba.fastjson.JSON;
import com.http.entity.ShopInfo;
import org.elasticsearch.action.ActionFuture;
import org.elasticsearch.action.delete.DeleteRequestBuilder;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequestBuilder;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.common.xcontent.XContentType;
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.elasticsearch.search.sort.SortOrder;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.util.List;
import java.util.Map;
import java.util.concurrent.CopyOnWriteArrayList;
import java.util.concurrent.ExecutionException;


@RestController
public class EsController {
    @Autowired
    TransportClient transportClient;

    /**
     * 根据id查询
     * @return
     */
    @RequestMapping("/getData")
    public String getData(){
         GetRequestBuilder getRequestBuilder = transportClient.prepareGet("shop", "shop", "52BEEC87048F4489B8A5F370E0EAD2FB");
         String sourceAsString = getRequestBuilder.get().getSourceAsString();
         return sourceAsString;
    }

    /**
     * 添加
     * @return
     */
    @RequestMapping("/saveData")
    public IndexResponse saveData(){
        ShopInfo shopInfo=new ShopInfo();
        shopInfo.setTitle("dsds");
        shopInfo.setSrc("src");

        IndexResponse indexResponse = transportClient.prepareIndex("book", "user", "1").setSource(JSON.toJSONString(shopInfo), XContentType.JSON).get();
        return indexResponse;
    }
    /**
     * 修改
     * @return
     */
    @RequestMapping("/updateData")
    public IndexResponse updateData(){
        ShopInfo shopInfo=new ShopInfo();
        shopInfo.setSrc("cs");
      //book是索引   user是类型 1是修改的id
        IndexResponse indexResponse = transportClient.prepareIndex("book", "user", "1").setSource(JSON.toJSONString(shopInfo), XContentType.JSON).get();
        return indexResponse;
    }

    /**
     * 删除
     * @return
     */
    @RequestMapping("/deleteData")
    public DeleteResponse deleteData(){
        DeleteRequestBuilder deleteRequestBuilder = transportClient.prepareDelete("book", "user", "1");
        DeleteResponse deleteResponse = deleteRequestBuilder.get();
        return deleteResponse;
    }
    /**
      根据标题模糊查询
     * 高亮显示查询
      分页查询
      排序
     *
     * @return
     */
    @RequestMapping("/getDataAll")
    public  List<Map<String,Object>>  getDataAll() throws ExecutionException, InterruptedException {

        List<Map<String,Object>> maps=new CopyOnWriteArrayList<>();

        SearchRequest searchRequest=new SearchRequest("shop");

        SearchSourceBuilder searchSourceBuilder=new SearchSourceBuilder();

        searchRequest.source(searchSourceBuilder);
        //查询条件title
        MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("title", "阅读");
          //设置高亮内容
        HighlightBuilder highlightBuilder=new HighlightBuilder();
 
        highlightBuilder.preTags("<p style='color:red;'>");

        highlightBuilder.postTags("<p/>");

        highlightBuilder.field("title");

        searchSourceBuilder.highlighter(highlightBuilder);

        searchSourceBuilder.query(matchQueryBuilder);
           //从那开始显示
        searchSourceBuilder.from(0);
           //每页显示几条
        searchSourceBuilder.size(2);
           //排序
        searchSourceBuilder.sort("_score", SortOrder.DESC);

        ActionFuture<SearchResponse> search = transportClient.search(searchRequest);

        SearchHits hits = search.get().getHits();

        SearchHit[] hits1 = hits.getHits();
           //循环遍历数据，并设置高亮字段
        for (SearchHit hit:hits1){
            Map<String, Object> sourceAsMap = hit.getSourceAsMap();
            Map<String, HighlightField> highlightFields = hit.getHighlightFields();
            String str="";
            if(highlightFields!=null){
                Text[] titles = highlightFields.get("title").fragments();
                for (Text text:titles){
                    System.out.println(text);
                    str+=text;
                }
            }
            sourceAsMap.put("title",str);
            maps.add(sourceAsMap);
        }
        return maps;
    }
}