Springboot 整合 ES 搜索引擎示例demo

<!--首先咱們這個ES的版本是7.6.0.Springboot 的版本是-->
<parent>
   <groupId>org.springframework.boot</groupId>
   <artifactId>spring-boot-starter-parent</artifactId>
   <version>2.3.0.RELEASE</version>
   <relativePath/> <!-- lookup parent from repository -->
</parent>

示例代碼：pom.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <!--首先咱們這個ES的版本是7.6.0.Springboot 的版本是-->
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>2.3.0.RELEASE</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.example</groupId>
   <artifactId>demo</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>demo</name>
   <description>Demo project for Spring Boot</description>

   <properties>
      <java.version>1.8</java.version>
   </properties>

   <dependencies>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
      </dependency>

      <!-- https://mvnrepository.com/artifact/org.elasticsearch/elasticsearch -->
      <dependency>
         <groupId>org.elasticsearch</groupId>
         <artifactId>elasticsearch</artifactId>
         <version>7.6.0</version>
      </dependency>

      <!-- https://mvnrepository.com/artifact/org.elasticsearch.client/transport -->
      <dependency>
         <groupId>org.elasticsearch.client</groupId>
         <artifactId>transport</artifactId>
         <version>7.6.0</version>
         <exclusions>
            <exclusion>
               <groupId>org.elasticsearch</groupId>
               <artifactId>elasticsearch</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
      <!-- fastjson -->
      <dependency>
         <groupId>com.alibaba</groupId>
         <artifactId>fastjson</artifactId>
         <version>1.2.39</version>
      </dependency>

      <dependency>
         <groupId>org.apache.commons</groupId>
         <artifactId>commons-lang3</artifactId>
         <version>3.4</version>
      </dependency>

      <!-- https://mvnrepository.com/artifact/org.projectlombok/lombok -->
      <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
         <version>1.16.20</version>
      </dependency>
      <dependency>
         <groupId>commons-httpclient</groupId>
         <artifactId>commons-httpclient</artifactId>
         <version>3.1</version>
      </dependency>



      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-web</artifactId>
      </dependency>

      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-devtools</artifactId>
         <scope>runtime</scope>
         <optional>true</optional>
      </dependency>
      <dependency>
         <groupId>org.projectlombok</groupId>
         <artifactId>lombok</artifactId>
         <optional>true</optional>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-test</artifactId>
         <scope>test</scope>
         <exclusions>
            <exclusion>
               <groupId>org.junit.vintage</groupId>
               <artifactId>junit-vintage-engine</artifactId>
            </exclusion>
         </exclusions>
      </dependency>
   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
         </plugin>
      </plugins>
   </build>

</project>

application.properties文件的配置：

# Elasticsearch
# 9200端口是用來讓HTTP REST API來訪問ElasticSearch，而9300端口是傳輸層監聽的默認端口
elasticsearch.ip=127.0.0.1
elasticsearch.port=9300
elasticsearch.pool=5
#注意cluster.name需要與config/elasticsearch.yml中的cluster.name一致
elasticsearch.cluster.name=myes
server.port=8181

文件目錄如下：

package com.example.demo.entity;

import lombok.Data;
import lombok.NoArgsConstructor;
import lombok.ToString;

/**
 * @Description:Book實體 加上了@Document註解之後，默認情況下這個實體中所有的屬性都會被建立索引、並且分詞
 */
@Data
@ToString
@NoArgsConstructor
public class Employee {
    private String id;
    private Long version;
    String firstName;
    String lastName;
    String age;
    String[] interests;
}

package com.example.demo.controller;

import com.alibaba.fastjson.JSONObject;
import com.example.demo.entity.Employee;
import com.example.demo.util.ElasticsearchUtil;
import com.example.demo.util.EsPage;
import org.apache.commons.httpclient.util.DateUtil;
import org.apache.commons.lang3.StringUtils;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Random;

@RestController
@RequestMapping("/es")
public class EsController {

    /**
     * 測試索引
     */
    private String indexName = "megacorp";

    /**
     * 類型
     */
    private String esType = "employee";

    /**
     * 創建索引
     * http://127.0.0.1:8080/es/createIndex
     * @param request
     * @param response
     * @return
     */
    @RequestMapping("/createIndex")
    public String createIndex(HttpServletRequest request, HttpServletResponse response) {
        if (!ElasticsearchUtil.isIndexExist(indexName)) {
            ElasticsearchUtil.createIndex(indexName);
        } else {
            return "索引已經存在";
        }
        return "索引創建成功";
    }

    /**
     * 插入記錄
     *
     * @return
     */
    @RequestMapping("/insertJson")
    public String insertJson() {
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("id", new Random().nextInt());
        jsonObject.put("age", 25);
        jsonObject.put("first_name", "j-" + new Random(100).nextInt());
        jsonObject.put("last_name", "cccc");
        jsonObject.put("about", "i like xiaofeng baby");
        jsonObject.put("date", new Date());
        String id = ElasticsearchUtil.addData(jsonObject, indexName, esType, jsonObject.getString("id"));
        System.out.println(id);
        return id;
    }

    /**
     * 插入記錄
     *
     * @return
     */
    @RequestMapping("/insertModel")
    public String insertModel() {
        Employee employee = new Employee();
        employee.setId("67");
        employee.setFirstName("m-" + new Random(100).nextInt());
        employee.setLastName("zhouqm");
        employee.setAge("24");
        JSONObject jsonObject = (JSONObject) JSONObject.toJSON(employee);
        String id = ElasticsearchUtil.addData(jsonObject, indexName, esType, jsonObject.getString("id"));
        return id;
    }

    /**
     * 刪除記錄
     *
     * @return
     */
    @RequestMapping("/delete")
    public String delete(String id) {
        if (StringUtils.isNotBlank(id)) {
            ElasticsearchUtil.deleteDataById(indexName, esType, id);
            return "刪除id=" + id;
        } else {
            return "id爲空";
        }
    }

    /**
     * 更新數據
     *
     * @return
     */
    @RequestMapping("/update")
    public String update(String id) {
        if (StringUtils.isNotBlank(id)) {
            JSONObject jsonObject = new JSONObject();
            jsonObject.put("id", id);
            jsonObject.put("age", 31);
            jsonObject.put("name", "修改");
            jsonObject.put("date", new Date());
            ElasticsearchUtil.updateDataById(jsonObject, indexName, esType, id);
            return "id=" + id;
        } else {
            return "id爲空";
        }
    }

    /**
     * 獲取數據
     * http://127.0.0.1:8080/es/getData?id=2018-04-25%2016:33:44
     *
     * @param id
     * @return
     */
    @RequestMapping("/getData")
    public String getData(String id) {
        if (StringUtils.isNotBlank(id)) {
            Map<String, Object> map = ElasticsearchUtil.searchDataById(indexName, esType, id, null);
            return JSONObject.toJSONString(map);
        } else {
            return "id爲空";
        }
    }

    /**
     * 查詢數據
     * 模糊查詢
     *
     * @return
     */
    @RequestMapping("/queryMatchData")
    public String queryMatchData() {
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        boolean matchPhrase = false;
        if (matchPhrase == Boolean.TRUE) {
            //不進行分詞搜索
            boolQuery.must(QueryBuilders.matchPhraseQuery("first_name", "cici"));
        } else {
            boolQuery.must(QueryBuilders.matchQuery("last_name", "cici"));
        }
        List<Map<String, Object>> list = ElasticsearchUtil.
                searchListData(indexName, esType, boolQuery, 10, "first_name", null, "last_name");
        return JSONObject.toJSONString(list);
    }

    /**
     * 通配符查詢數據
     * 通配符查詢 ?用來匹配1個任意字符，*用來匹配零個或者多個字符
     *
     * @return
     */
    @RequestMapping("/queryWildcardData")
    public String queryWildcardData() {
        QueryBuilder queryBuilder = QueryBuilders.wildcardQuery("first_name.keyword", "cici");
        List<Map<String, Object>> list = ElasticsearchUtil.searchListData(indexName, esType, queryBuilder, 10, null, null, null);
        return JSONObject.toJSONString(list);
    }

    /**
     * 正則查詢
     *
     * @return
     */
    @RequestMapping("/queryRegexpData")
    public String queryRegexpData() {
        QueryBuilder queryBuilder = QueryBuilders.regexpQuery("first_name.keyword", "m--[0-9]{1,11}");
        List<Map<String, Object>> list = ElasticsearchUtil.searchListData(indexName, esType, queryBuilder, 10, null, null, null);
        return JSONObject.toJSONString(list);
    }

    /**
     * 查詢數字範圍數據
     *
     * @return
     */
    @RequestMapping("/queryIntRangeData")
    public String queryIntRangeData() {
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        boolQuery.must(QueryBuilders.rangeQuery("age").from(24)
                .to(25));
        List<Map<String, Object>> list = ElasticsearchUtil.searchListData(indexName, esType, boolQuery, 10, null, null, null);
        return JSONObject.toJSONString(list);
    }

    /**
     * 查詢日期範圍數據
     *
     * @return
     */
    @RequestMapping("/queryDateRangeData")
    public String queryDateRangeData() {
        BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
        boolQuery.must(QueryBuilders.rangeQuery("age").from("20")
                .to("50"));
        List<Map<String, Object>> list = ElasticsearchUtil.searchListData(indexName, esType, boolQuery, 10, null, null, null);
        return JSONObject.toJSONString(list);
    }

    /**
     * 查詢分頁
     *
     * @param startPage 第幾條記錄開始
     *                  從0開始
     *                  第1頁 ：http://127.0.0.1:8080/es/queryPage?startPage=0&pageSize=2
     *                  第2頁 ：http://127.0.0.1:8080/es/queryPage?startPage=2&pageSize=2
     * @param pageSize  每頁大小
     * @return
     */
    @RequestMapping("/queryPage")
    public String queryPage(String startPage, String pageSize) {
        if (StringUtils.isNotBlank(startPage) && StringUtils.isNotBlank(pageSize)) {
            BoolQueryBuilder boolQuery = QueryBuilders.boolQuery();
            boolQuery.must(QueryBuilders.rangeQuery("age").from("20").to("100"));
            EsPage list = ElasticsearchUtil.searchDataPage(indexName, esType, Integer.parseInt(startPage), Integer.parseInt(pageSize), boolQuery, null, null, null);
            return JSONObject.toJSONString(list);
        } else {
            return "startPage或者pageSize缺失";
        }
    }
}

package com.example.demo.util;

import lombok.Data;
import lombok.ToString;

import java.util.List;
import java.util.Map;

@Data
@ToString
public class EsPage {

    /**
     * 當前頁
     */
    private int currentPage;
    /**
     * 每頁顯示多少條
     */
    private int pageSize;

    /**
     * 總記錄數
     */
    private int recordCount;
    /**
     * 本頁的數據列表
     */
    private List<Map<String, Object>> recordList;

    /**
     * 總頁數
     */
    private int pageCount;
    /**
     * 頁碼列表的開始索引（包含）
     */
    private int beginPageIndex;
    /**
     * 頁碼列表的結束索引（包含）
     */
    private int endPageIndex;

    /**
     * 只接受前4個必要的屬性，會自動的計算出其他3個屬性的值
     *
     * @param currentPage
     * @param pageSize
     * @param recordCount
     * @param recordList
     */
    public EsPage(int currentPage, int pageSize, int recordCount, List<Map<String, Object>> recordList) {
        this.currentPage = currentPage;
        this.pageSize = pageSize;
        this.recordCount = recordCount;
        this.recordList = recordList;

        // 計算總頁碼
        pageCount = (recordCount + pageSize - 1) / pageSize;

        // 計算 beginPageIndex 和 endPageIndex
        // >> 總頁數不多於10頁，則全部顯示
        if (pageCount <= 10) {
            beginPageIndex = 1;
            endPageIndex = pageCount;
        }
        // 總頁數多於10頁，則顯示當前頁附近的共10個頁碼
        else {
            // 當前頁附近的共10個頁碼（前4個 + 當前頁 + 後5個）
            beginPageIndex = currentPage - 4;
            endPageIndex = currentPage + 5;
            // 當前面的頁碼不足4個時，則顯示前10個頁碼
            if (beginPageIndex < 1) {
                beginPageIndex = 1;
                endPageIndex = 10;
            }
            // 當後面的頁碼不足5個時，則顯示後10個頁碼
            if (endPageIndex > pageCount) {
                endPageIndex = pageCount;
                beginPageIndex = pageCount - 10 + 1;
            }
        }
    }
}

package com.example.demo.util;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.admin.indices.exists.indices.IndicesExistsRequest;
import org.elasticsearch.action.admin.indices.exists.indices.IndicesExistsResponse;
import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetRequestBuilder;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.search.SearchRequestBuilder;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.action.search.SearchType;
import org.elasticsearch.action.support.master.AcknowledgedResponse;
import org.elasticsearch.action.update.UpdateRequest;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.text.Text;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.fetch.subphase.highlight.HighlightBuilder;
import org.elasticsearch.search.sort.SortOrder;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;

@Component
@SuppressWarnings("all")
public class ElasticsearchUtil {

    private static final Logger LOGGER = LoggerFactory.getLogger(ElasticsearchUtil.class);

    @Autowired
    private TransportClient transportClient;

    private static TransportClient client;

    /**
     * @PostContruct是spring框架的註解 spring容器初始化的時候執行該方法
     */
    @PostConstruct
    public void init() {
        client = this.transportClient;
    }

    /**
     * 創建索引
     *
     * @param index
     * @return
     */
    public static boolean createIndex(String index) {
        if (!isIndexExist(index)) {
            LOGGER.info("Index is not exits!");
        }
        CreateIndexResponse indexresponse = client.admin().indices().prepareCreate(index).execute().actionGet();
        LOGGER.info("執行建立成功？" + indexresponse.isAcknowledged());
        return indexresponse.isAcknowledged();
    }

    /**
     * 刪除索引
     *
     * @param index
     * @return
     */
    public static boolean deleteIndex(String index) {
        if (!isIndexExist(index)) {
            LOGGER.info("Index is not exits!");
        }
        AcknowledgedResponse acknowledgedResponse = client.admin().indices().prepareDelete(index).execute().actionGet();
        if (acknowledgedResponse.isAcknowledged()) {
            LOGGER.info("delete index " + index + "  successfully!");
        } else {
            LOGGER.info("Fail to delete index " + index);
        }
        return acknowledgedResponse.isAcknowledged();
    }

    /**
     * 判斷索引是否存在
     *
     * @param index
     * @return
     */
    public static boolean isIndexExist(String index) {
        IndicesExistsResponse inExistsResponse = client.admin().indices().exists(new IndicesExistsRequest(index)).actionGet();
        if (inExistsResponse.isExists()) {
            LOGGER.info("Index [" + index + "] is exist!");
        } else {
            LOGGER.info("Index [" + index + "] is not exist!");
        }
        return inExistsResponse.isExists();
    }

    /**
     * @Description: 判斷inde下指定type是否存在
     */
    public boolean isTypeExist(String index, String type) {
        return isIndexExist(index)
                ? client.admin().indices().prepareTypesExists(index).setTypes(type).execute().actionGet().isExists()
                : false;
    }

    /**
     * 數據添加，正定ID
     *
     * @param jsonObject 要增加的數據
     * @param index      索引，類似數據庫
     * @param type       類型，類似表
     * @param id         數據ID
     * @return
     */
    public static String addData(JSONObject jsonObject, String index, String type, String id) {
        IndexResponse response = client.prepareIndex(index, type, id).setSource(jsonObject).get();
        LOGGER.info("addData response status:{},id:{}", response.status().getStatus(), response.getId());
        return response.getId();
    }

    /**
     * 數據添加
     *
     * @param jsonObject 要增加的數據
     * @param index      索引，類似數據庫
     * @param type       類型，類似表
     * @return
     */
    public static String addData(JSONObject jsonObject, String index, String type) {
        return addData(jsonObject, index, type, UUID.randomUUID().toString().replaceAll("-", "").toUpperCase());
    }

    /**
     * 通過ID刪除數據
     *
     * @param index 索引，類似數據庫
     * @param type  類型，類似表
     * @param id    數據ID
     */
    public static void deleteDataById(String index, String type, String id) {

        DeleteResponse response = client.prepareDelete(index, type, id).execute().actionGet();

        LOGGER.info("deleteDataById response status:{},id:{}", response.status().getStatus(), response.getId());
    }

    /**
     * 通過ID 更新數據
     *
     * @param jsonObject 要增加的數據
     * @param index      索引，類似數據庫
     * @param type       類型，類似表
     * @param id         數據ID
     * @return
     */
    public static void updateDataById(JSONObject jsonObject, String index, String type, String id) {

        UpdateRequest updateRequest = new UpdateRequest();

        updateRequest.index(index).type(type).id(id).doc(jsonObject);

        client.update(updateRequest);

    }

    /**
     * 通過ID獲取數據
     *
     * @param index  索引，類似數據庫
     * @param type   類型，類似表
     * @param id     數據ID
     * @param fields 需要顯示的字段，逗號分隔（缺省爲全部字段）
     * @return
     */
    public static Map<String, Object> searchDataById(String index, String type, String id, String fields) {

        GetRequestBuilder getRequestBuilder = client.prepareGet(index, type, id);

        if (StringUtils.isNotEmpty(fields)) {
            getRequestBuilder.setFetchSource(fields.split(","), null);
        }

        GetResponse getResponse = getRequestBuilder.execute().actionGet();

        return getResponse.getSource();
    }


    /**
     * 使用分詞查詢,並分頁
     *
     * @param index          索引名稱
     * @param type           類型名稱,可傳入多個type逗號分隔
     * @param startPage      當前頁
     * @param pageSize       每頁顯示條數
     * @param query          查詢條件
     * @param fields         需要顯示的字段，逗號分隔（缺省爲全部字段）
     * @param sortField      排序字段
     * @param highlightField 高亮字段
     * @return
     */
    public static EsPage searchDataPage(String index, String type, int startPage, int pageSize, QueryBuilder query, String fields, String sortField, String highlightField) {
        SearchRequestBuilder searchRequestBuilder = client.prepareSearch(index);
        if (StringUtils.isNotEmpty(type)) {
            searchRequestBuilder.setTypes(type.split(","));
        }
        searchRequestBuilder.setSearchType(SearchType.QUERY_THEN_FETCH);

        // 需要顯示的字段，逗號分隔（缺省爲全部字段）
        if (StringUtils.isNotEmpty(fields)) {
            searchRequestBuilder.setFetchSource(fields.split(","), null);
        }

        //排序字段
        if (StringUtils.isNotEmpty(sortField)) {
            searchRequestBuilder.addSort(sortField, SortOrder.DESC);
        }

        // 高亮（xxx=111,aaa=222）
        if (StringUtils.isNotEmpty(highlightField)) {
            HighlightBuilder highlightBuilder = new HighlightBuilder();

            //highlightBuilder.preTags("<span style='color:red' >");//設置前綴
            //highlightBuilder.postTags("</span>");//設置後綴

            // 設置高亮字段
            highlightBuilder.field(highlightField);
            searchRequestBuilder.highlighter(highlightBuilder);
        }

        //searchRequestBuilder.setQuery(QueryBuilders.matchAllQuery());
        searchRequestBuilder.setQuery(query);

        // 分頁應用
        searchRequestBuilder.setFrom(startPage).setSize(pageSize);

        // 設置是否按查詢匹配度排序
        searchRequestBuilder.setExplain(true);

        //打印的內容 可以在 Elasticsearch head 和 Kibana  上執行查詢
        LOGGER.info("\n{}", searchRequestBuilder);

        // 執行搜索,返回搜索響應信息
        SearchResponse searchResponse = searchRequestBuilder.execute().actionGet();

        long totalHits = searchResponse.getHits().getTotalHits().value;
        long length = searchResponse.getHits().getHits().length;

        LOGGER.debug("共查詢到[{}]條數據,處理數據條數[{}]", totalHits, length);

        if (searchResponse.status().getStatus() == 200) {
            // 解析對象
            List<Map<String, Object>> sourceList = setSearchResponse(searchResponse, highlightField);

            return new EsPage(startPage, pageSize, (int) totalHits, sourceList);
        }

        return null;

    }


    /**
     * 使用分詞查詢
     *
     * @param index          索引名稱
     * @param type           類型名稱,可傳入多個type逗號分隔
     * @param query          查詢條件
     * @param size           文檔大小限制
     * @param fields         需要顯示的字段，逗號分隔（缺省爲全部字段）
     * @param sortField      排序字段
     * @param highlightField 高亮字段
     * @return
     */
    public static List<Map<String, Object>> searchListData(
            String index, String type, QueryBuilder query, Integer size,
            String fields, String sortField, String highlightField) {

        SearchRequestBuilder searchRequestBuilder = client.prepareSearch(index);
        if (StringUtils.isNotEmpty(type)) {
            searchRequestBuilder.setTypes(type.split(","));
        }

        if (StringUtils.isNotEmpty(highlightField)) {
            HighlightBuilder highlightBuilder = new HighlightBuilder();
            // 設置高亮字段
            highlightBuilder.field(highlightField);
            searchRequestBuilder.highlighter(highlightBuilder);
        }

        searchRequestBuilder.setQuery(query);

        if (StringUtils.isNotEmpty(fields)) {
            searchRequestBuilder.setFetchSource(fields.split(","), null);
        }
        searchRequestBuilder.setFetchSource(true);

        if (StringUtils.isNotEmpty(sortField)) {
            searchRequestBuilder.addSort(sortField, SortOrder.DESC);
        }

        if (size != null && size > 0) {
            searchRequestBuilder.setSize(size);
        }

        //打印的內容 可以在 Elasticsearch head 和 Kibana  上執行查詢
        LOGGER.info("\n{}", searchRequestBuilder);

        SearchResponse searchResponse = searchRequestBuilder.execute().actionGet();

        long totalHits = searchResponse.getHits().getTotalHits().value;
        long length = searchResponse.getHits().getHits().length;

        LOGGER.info("共查詢到[{}]條數據,處理數據條數[{}]", totalHits, length);

        if (searchResponse.status().getStatus() == 200) {
            // 解析對象
            return setSearchResponse(searchResponse, highlightField);
        }
        return null;

    }


    /**
     * 高亮結果集 特殊處理
     *
     * @param searchResponse
     * @param highlightField
     */
    private static List<Map<String, Object>> setSearchResponse(SearchResponse searchResponse, String highlightField) {
        List<Map<String, Object>> sourceList = new ArrayList<Map<String, Object>>();
        StringBuffer stringBuffer = new StringBuffer();

        for (SearchHit searchHit : searchResponse.getHits().getHits()) {
            searchHit.getSourceAsMap().put("id", searchHit.getId());

            if (StringUtils.isNotEmpty(highlightField)) {

                System.out.println("遍歷 高亮結果集，覆蓋 正常結果集" + searchHit.getSourceAsMap());
                Text[] text = searchHit.getHighlightFields().get(highlightField).getFragments();

                if (text != null) {
                    for (Text str : text) {
                        stringBuffer.append(str.string());
                    }
                    //遍歷 高亮結果集，覆蓋 正常結果集
                    searchHit.getSourceAsMap().put(highlightField, stringBuffer.toString());
                }
            }
            sourceList.add(searchHit.getSourceAsMap());
        }
        return sourceList;
    }
}

package com.example.demo.util;

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.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import java.net.InetAddress;

@Configuration
public class ElasticSearchConfig {

    private static final Logger LOGGER = LoggerFactory.getLogger(ElasticSearchConfig.class);

    /**
     * elk集羣地址
     */
    @Value("${elasticsearch.ip}")
    private String hostName;

    /**
     * 端口
     */
    @Value("${elasticsearch.port}")
    private String port;

    /**
     * 集羣名稱
     */
    @Value("${elasticsearch.cluster.name}")
    private String clusterName;

    /**
     * 連接池
     */
    @Value("${elasticsearch.pool}")
    private String poolSize;

    /**
     * Bean name default  函數名字
     *
     * @return
     */
    @Bean(name = "transportClient")
    public TransportClient transportClient() {
        LOGGER.info("Elasticsearch初始化開始。。。。。");
        TransportClient transportClient = null;
        try {
            // 配置信息
            Settings esSetting = Settings.builder()
                    .put("cluster.name", clusterName) //集羣名字
                    .put("client.transport.sniff", true)//增加嗅探機制，找到ES集羣
                    .put("thread_pool.search.size", Integer.parseInt(poolSize))//增加線程池個數，暫時設爲5
                    .build();
            //配置信息Settings自定義
            transportClient = new PreBuiltTransportClient(esSetting);
            TransportAddress transportAddress = new TransportAddress(InetAddress.getByName(hostName), Integer.valueOf(port));
            transportClient.addTransportAddresses(transportAddress);
        } catch (Exception e) {
            LOGGER.error("elasticsearch TransportClient create error!!", e);
        }
        return transportClient;
    }
}

package com.example.demo;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class DemoApplication {

   public static void main(String[] args) {
      SpringApplication.run(DemoApplication.class, args);
   }

}

 

需要代碼的可以私信我啊，學習起來特別簡單！