1：引入依賴

          <dependency>
                <groupId>org.elasticsearch.client</groupId>
                <artifactId>elasticsearch-rest-high-level-client</artifactId>
                <version>7.4.2</version>
            </dependency>


            <dependency>
                <groupId>org.elasticsearch</groupId>
                <artifactId>elasticsearch</artifactId>
                <version>7.4.2</version>
            </dependency>

2：elasticSearch配置

elasticSearch配置

es.userName=superuser
es.password=Dxm_123
es.host=10.157.24.122
es.port=8200

3：ES的配置

@Configuration
public class ElasticSearchConfig {

    @Value("${es.userName}")
    private String userName;

    @Value("${es.password}")
    private String password;

    @Value("${es.host}")
    private String esHost;

    @Value("${es.port}")
    private Integer esPort;

    @Bean
    public RestHighLevelClient esRestClient() {
        CredentialsProvider credentialsProvider = new BasicCredentialsProvider();
        credentialsProvider.setCredentials(AuthScope.ANY, new UsernamePasswordCredentials(userName, password));


        RestClientBuilder builder = RestClient.builder(new HttpHost(esHost, esPort))
                .setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
                    @Override
                    public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                        return httpClientBuilder.setDefaultCredentialsProvider(credentialsProvider);
                    }
                });

        RestHighLevelClient client = new RestHighLevelClient(builder);
        return client;

    }
}

4：ES服務(wù)的接口

package com.dxm.insur.bi.biz.es;

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

/**
 * Created by huxiaona on 2020-10-12
 **/
public interface ElasticSearchService {

    /**
     * json形式存儲(chǔ)doc
     * @param index
     * @param docJsonString
     * @param id
     */
    void saveDoc(String index, String docJsonString, String id);

    /**
     * es搜索
     * @param index
     * @param where  范圍查詢對(duì)應(yīng)Object為map且對(duì)應(yīng)的key值分別為start和end
     *               or查詢對(duì)應(yīng)的Object為Set检盼，且是模糊匹配
     *               in查詢對(duì)應(yīng)的Object為L(zhǎng)ist
     *               否則為單個(gè)精準(zhǔn)匹配
     * @param sortFieldsToAsc
     * @param includeFields
     * @param excludeFields
     * @param timeOut
     * @return
     */
    List<Map<String, Object>> search(String index, Map<String, Object> where, Map<String, Boolean> sortFieldsToAsc, String[] includeFields, String[] excludeFields, int timeOut, String collapseFields);
}

5：ES服務(wù)的具體實(shí)現(xiàn)

package com.dxm.insur.bi.biz.es.impl;

import com.dxm.insur.bi.base.exception.InsureEtlException;
import com.dxm.insur.bi.base.exception.InsureEtlResponseCode;
import com.dxm.insur.bi.base.util.StringUtil;
import com.dxm.insur.bi.biz.es.ElasticSearchService;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
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.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.collapse.CollapseBuilder;
import org.elasticsearch.search.sort.FieldSortBuilder;
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.Service;
import org.springframework.util.CollectionUtils;

import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

/**
 * Created by huxiaona on 2020-10-12
 **/
@Service
public class ElasticSearchServiceImpl implements ElasticSearchService {

    public static final Logger logger = LoggerFactory.getLogger(ElasticSearchService.class);


    @Autowired
    private RestHighLevelClient highLevelClient;

    @Override
    public void saveDoc(String index, String doc, String id) {
        try {
            IndexRequest indexRequest = new IndexRequest(index).id(id).source(doc, XContentType.JSON);
            IndexResponse indexResponse = highLevelClient.index(indexRequest, RequestOptions.DEFAULT);
            logger.info("[ElasticSearchService] save doc of index:{} success, response:{}!", index, indexResponse);
        } catch (Exception e) {
            logger.error("[ElasticSearchService] save doc:{} of index:{} error", doc, index, e);
            throw new InsureEtlException(InsureEtlResponseCode.ES_SAVE_DOC_ERROR);
        }
    }

    @Override
    public List<Map<String, Object>> search(String index, Map<String, Object> where, Map<String, Boolean> sortFieldsToAsc, String[] includeFields, String[] excludeFields,int timeOut, String collapseField) {
        SearchResponse searchResponse = null;
        logger.info("[ElasticSearchService]search of index:{} begin", index);
        try {
            SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
            // 構(gòu)造條件
            if(where != null && !CollectionUtils.isEmpty(where)) {
                BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
                where.forEach((k, v) -> {
                    // 范圍查詢或者 or 查詢
                    if (v instanceof Map && v != null) {
                        // 包含start和end則為范圍查詢
                        Map<String, String> mapV = (Map<String, String>) v;
                        if (mapV.containsKey("start") && mapV.containsKey("end")) {
                            boolQueryBuilder.must(QueryBuilders.rangeQuery(k).
                                    gte(mapV.get("start")).
                                    lte(mapV.get("end")));
                        }
                    } else if (v instanceof Set && v != null) {
                        // or 查詢
                        BoolQueryBuilder orQueryBuilder = QueryBuilders.boolQuery();
                        ((Set) v).forEach(value -> {
                            orQueryBuilder.should(QueryBuilders.wildcardQuery(k, value.toString()));
                        });
                        boolQueryBuilder.must(orQueryBuilder);
                    } else if (v instanceof List && v != null) {
                        // in查詢
                        boolQueryBuilder.must(QueryBuilders.termsQuery(k, (List<String>)v));
                    } else {
                        // 模糊匹配
                        boolQueryBuilder.must(QueryBuilders.termQuery(k, v.toString()));
                    }
                });
                sourceBuilder.query(boolQueryBuilder);
            }
            sourceBuilder.timeout(new TimeValue(timeOut, TimeUnit.SECONDS));
            if (sortFieldsToAsc != null && !sortFieldsToAsc.isEmpty()) {
                sortFieldsToAsc.forEach((k, v) -> {
                    sourceBuilder.sort(new FieldSortBuilder(k).order(v ? SortOrder.ASC : SortOrder.DESC));
                });
            }
            // 指定字段去重折疊
            if (!StringUtil.isBlank(collapseField)) {
                sourceBuilder.collapse(new CollapseBuilder(collapseField));
            }
            sourceBuilder.size(10000);
            sourceBuilder.fetchSource(includeFields, excludeFields);
            SearchRequest searchRequest = new SearchRequest();
            searchRequest.indices(index);
            searchRequest.source(sourceBuilder);
            logger.info("[ElasticSearchService] search source:{}", searchRequest.source().toString());
            searchResponse = highLevelClient.search(searchRequest, RequestOptions.DEFAULT);
            logger.info("[ElasticSearchService] search response:{}", searchResponse);

        } catch (Exception e) {
            logger.error("[ElasticSearchService] search error!", e);
            throw new InsureEtlException(InsureEtlResponseCode.ES_QUERY_ERROR);
        }

        //解析返回
        if (searchResponse.status() != RestStatus.OK) {
            logger.error("[ElasticSearchService] search error!");
            throw new InsureEtlException(InsureEtlResponseCode.ES_QUERY_ERROR);
        }
        if (searchResponse.getHits().getTotalHits().value <= 0) {
            logger.info("[ElasticSearchService] search res is empty, return!");
            return Collections.emptyList();
        }
        return Arrays.stream(searchResponse.getHits().getHits()).map(b -> {
              return b.getSourceAsMap();
        }).collect(Collectors.toList());
    }
}

7：實(shí)際查詢應(yīng)用

        // 組裝查詢條件
        Map<String, Object> where = new HashMap<>();
        where.put("eventDate", request.getDate());
        if(!StringUtils.isEmpty(request.getItemId())) {
            where.put("itemId", request.getItemId());
        }
        where.put("passId", request.getUserInfos());
        String[] includeFields = {"uaId"};

        StopWatch clock = new StopWatch();
        clock.start();
        List<Map<String, Object>> searchRes = elasticSearchService.search(CommonConstants.ES_H5_LOG_INDEX, where, null, includeFields, null, CommonConstants.ES_SEARCH_LIMIT_TIME, "uaId");
        clock.stop();
        long handlingTime1 = clock.getTime();
        logger.info("--------------精確查找, 耗時(shí): " + handlingTime1 + "ms");


       // passId條件改為uaId
        where.remove("passId");
        where.put("uaId", new ArrayList<String>(uaIds));
        List<String> spms = Splitter.on(",").splitToList(AppConfigUtil.getProperty(AppConfigConstants.USER_TRACK_SPM));
        where.put("spm", new HashSet<>(spms));
        Map<String, Boolean> sortFieldsToAsc = new HashMap<>();
        sortFieldsToAsc.put("sessionId", true);
        sortFieldsToAsc.put("requesttime", true);
        includeFields = new String[]{"sessionId", "requesttime", "spm"};

        clock.start();
        searchRes = elasticSearchService.search(CommonConstants.ES_H5_LOG_INDEX, where, sortFieldsToAsc, includeFields, null, CommonConstants.ES_SEARCH_LIMIT_TIME, null);
        clock.stop();
        long handlingTime2 = clock.getTime();
        logger.info("--------------模糊查找, 耗時(shí): " + handlingTime2 + "ms");

8：存儲(chǔ)的bean

package com.dxm.insur.bi.biz.log.bean;

import lombok.Data;

import java.util.Map;

/**
 * Created by huxiaona on 2020-10-08
 **/
@Data
public class InsurH5Log {

    private String eventDate;

    private String requesttime;

    private String sessionId;

    private String uaId;

    private String passId;

    private String channelId;

    private String customerId;

    private String userId;

    private Long itemId;

    private String spm;

    private String prespm;

    private String eventTag;

    private String preeventTag;

    private Integer from;

    private String refer;

    private String activityId;

    private Map<String, String> extendParam;

    private String ua;

    private Map<String, String> apiParams;
}