springboot集成es7(基于high level client)

环境：

　　ES:　　7.12.0

　　

1、springboot工程引入es相关jar

<dependency>
    <groupId>org.elasticsearch</groupId>
    <artifactId>elasticsearch</artifactId>
    <version>7.12.0</version>
</dependency>
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-client</artifactId>
    <version>7.12.0</version>
</dependency>
<dependency>
    <groupId>org.elasticsearch.plugin</groupId>
    <artifactId>reindex-client</artifactId>
    <version>7.12.0</version>
</dependency>
<!-- Java High Level REST Client -->
<dependency>
    <groupId>org.elasticsearch.client</groupId>
    <artifactId>elasticsearch-rest-high-level-client</artifactId>
    <version>7.12.0</version>
</dependency>

2、增加es自定义配置

elasticsearch:
  configs:
    sport:　　　　　　　　#索引配置
      userName: 1
      password: 2
      host: 127.0.0.1
      port: 9200
      indexName: sport　　#索引名称
      timeOut: 1000　　　　#请求超时时间，单位秒
    study:
      indexName: study
  help: sssssssssssssssssssss

3、JAVA代码

package com.example.elasticSearch;

import org.springframework.boot.context.properties.ConfigurationProperties;
import org.springframework.context.annotation.Configuration;

import java.util.Map;

@Configuration
@ConfigurationProperties(prefix = "elasticsearch")
public class ESConfig {

    Map<String, Config> configs;

    String help;

    public String getHelp() {
        return help;
    }

    public void setHelp(String help) {
        this.help = help;
    }

    public Map<String, Config> getConfigs() {
        return configs;
    }

    public void setConfigs(Map<String, Config> configs) {
        this.configs = configs;
    }

    static class Config {
        private String userName;
        private String password;
        private String host;
        private Integer port;
        private String indexName;
        private long timeout;

        public long getTimeout() {
            return timeout;
        }

        public void setTimeout(long timeout) {
            this.timeout = timeout;
        }

        public String getIndexName() {
            return indexName;
        }

        public void setIndexName(String indexName) {
            this.indexName = indexName;
        }

        public String getUserName() {
            return userName;
        }

        public void setUserName(String userName) {
            this.userName = userName;
        }

        public String getPassword() {
            return password;
        }

        public void setPassword(String password) {
            this.password = password;
        }

        public String getHost() {
            return host;
        }

        public void setHost(String host) {
            this.host = host;
        }

        public Integer getPort() {
            return port;
        }

        public void setPort(Integer port) {
            this.port = port;
        }

    }
}

package com.example.elasticSearch;

import com.alibaba.fastjson.JSON;
import org.apache.http.HttpHost;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
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.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.common.unit.TimeValue;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.BoolQueryBuilder;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.TermQueryBuilder;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.elasticsearch.search.sort.FieldSortBuilder;
import org.elasticsearch.search.sort.ScoreSortBuilder;
import org.elasticsearch.search.sort.SortOrder;
import org.springframework.util.CollectionUtils;
import org.springframework.web.bind.annotation.RequestBody;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.*;
import java.util.concurrent.TimeUnit;
import java.util.stream.Collectors;

public class ESClient {

    RestHighLevelClient restHighLevelClient;

    ESConfig.Config config;

    /**
     * 获取连接
     * @param config
     */
    public ESClient(ESConfig.Config config) {
        this.config = config;

        String[] hosts = config.getHost().split(",");
        String[] ports = config.getPort().split(",");
        HttpHost[] httpHostList = new HttpHost[hosts.length];
        for (int i = 0; i < hosts.length; i++) {
            httpHostList[i] = new HttpHost(hosts[i],Integer.parseInt(ports[i]),"http");
        }
        RestHighLevelClient restHighLevelClient=new RestHighLevelClient(
                RestClient.builder(httpHostList));
        this.restHighLevelClient = restHighLevelClient;
    }

    /**
     * 新建索引
     * @param sport
     */
    public void saveIndex(Sport sport){
        try {
            boolean exists = restHighLevelClient.indices().exists(new GetIndexRequest(config.getIndexName()), RequestOptions.DEFAULT);
            if (!exists) {
                CreateIndexRequest qyf = new CreateIndexRequest(config.getIndexName());
                restHighLevelClient.indices().create(qyf, RequestOptions.DEFAULT);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    /**
     * 保存文档
     * @param sport
     */
    public void saveDocument(Sport sport) {
        IndexRequest request = new IndexRequest(config.getIndexName());

        request.source(JSON.toJSONString(sport), XContentType.JSON);
        request.id(sport.getTitle());
        request.timeout(TimeValue.timeValueSeconds(config.getTimeout()));
        try {
            IndexResponse index = restHighLevelClient.index(request, RequestOptions.DEFAULT);
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    /**
     * 根据ID获取文档
     * @param sport
     * @return
     */
    public String getDocument(Sport sport) {
        GetRequest getRequest = new GetRequest(config.getIndexName(), sport.getId());
        GetResponse getResponse1 = null;
        try {
            getResponse1 = restHighLevelClient.get(getRequest, RequestOptions.DEFAULT);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return getResponse1.toString();
    }

    /**
     * @param index
     * @param from
     * @param size
     * @param where
     * @param sortFieldsToAsc
     * @param includeFields
     * @param excludeFields
     * @param timeOut
     * @return
     */
    public List<Map<String, Object>> searchIndex(String index, int from, int size, Map<String, Object> where,
                                                 Map<String, Boolean> sortFieldsToAsc, String[] includeFields, String[] excludeFields,
                                                 int timeOut) {
        SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ");
        try {
            SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
            //条件
            if (where != null && !where.isEmpty()) {
                BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
                where.forEach((k, v) -> {
                    if (v instanceof Map) {
                        //范围选择map  暂定时间
                        Map<String, Date> mapV = (Map<String, Date>) v;
                        if (mapV != null) {
                            boolQueryBuilder.must(
                                    QueryBuilders.rangeQuery(k).
                                            gte(format.format(mapV.get("start"))).
                                            lt(format.format(mapV.get("end"))));
                        }
                    } else {
                        //普通模糊匹配
                        boolQueryBuilder.must(QueryBuilders.wildcardQuery(k, v.toString()));
                    }
                });
                sourceBuilder.query(boolQueryBuilder);
            }

            //分页
            from = from <= -1 ? 0 : from;
            size = size >= 1000 ? 1000 : size;
            size = size <= 0 ? 15 : size;
            sourceBuilder.from(from);
            sourceBuilder.size(size);

            //超时
            sourceBuilder.timeout(new TimeValue(timeOut, TimeUnit.SECONDS));

            //排序
            if (sortFieldsToAsc != null && !sortFieldsToAsc.isEmpty()) {
                sortFieldsToAsc.forEach((k, v) -> {
                    sourceBuilder.sort(new FieldSortBuilder(k).order(v ? SortOrder.ASC : SortOrder.DESC));
                });
            } else {
                sourceBuilder.sort(new ScoreSortBuilder().order(SortOrder.DESC));
            }

            //返回和排除列
            if ((includeFields != null && includeFields.length != 0) || (excludeFields != null && excludeFields.length != 0)) {
                sourceBuilder.fetchSource(includeFields, excludeFields);
            }

            SearchRequest rq = new SearchRequest();
            //索引
            rq.indices(index);
            //各种组合条件
            rq.source(sourceBuilder);

            //请求
            System.out.println(rq.source().toString());
            SearchResponse rp = restHighLevelClient.search(rq, null);

            //解析返回
            if (rp.status() != RestStatus.OK || rp.getHits().getTotalHits().value <= 0) {
                return Collections.emptyList();
            }

            //获取source
            return Arrays.stream(rp.getHits().getHits()).map(b -> {
                return b.getSourceAsMap();
            }).collect(Collectors.toList());

        } catch (Exception ex) {
            ex.printStackTrace();
        }
        return Collections.emptyList();
    }

    /**
     * 搜索
     * @param keyword
     * @param pageNo
     * @param pageSize
     * @return
     * @throws IOException
     */
    public List<Map<String ,Object>> searchPage(String keyword, int pageNo, int pageSize) throws IOException {

        SearchRequest searchRequest = new SearchRequest(config.getIndexName());

        SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
        pageNo = pageNo * pageSize;
        pageSize = pageSize == 0 ? 10 : pageSize;
        searchSourceBuilder.from(pageNo);
        searchSourceBuilder.size(pageSize);

        //输入的关键字匹配的字段
        QueryBuilder termQueryBuilder = QueryBuilders.matchQuery("content", keyword);

        searchSourceBuilder.query(termQueryBuilder);
        searchSourceBuilder.timeout(new TimeValue(60, TimeUnit.SECONDS));

        //执行
        searchRequest.source(searchSourceBuilder);
        SearchResponse search = restHighLevelClient.search(searchRequest, RequestOptions.DEFAULT);

        ArrayList<Map<String,Object>> list = new ArrayList<>();

        if (search.getHits().getHits().length!=0){
            for (SearchHit documentFields : search.getHits().getHits()) {
                list.add(documentFields.getSourceAsMap());
            }
            return list;
        }else {
            HashMap<String, Object> map = new HashMap<>();
            map.put("code",404);
            map.put("msg","没有相关数据");
            list.add(map);
            return list;
        }
    }
}

package com.example.elasticSearch;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;

@Component
public class ESClientFactory {

    @Autowired
    ESConfig esConfig;

    public ESClient getClient(String type){

        ESConfig.Config config = esConfig.configs.get(type);

        return new ESClient(config);
    }

}

package com.example.elasticSearch;

public class Sport{

    String id;

    String title;

    String content;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getTitle() {
        return title;
    }

    public void setTitle(String title) {
        this.title = title;
    }

    public String getContent() {
        return content;
    }

    public void setContent(String content) {
        this.content = content;
    }
}

package com.example.elasticSearch;

import com.alibaba.fastjson.JSON;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.client.indices.CreateIndexRequest;
import org.elasticsearch.client.indices.GetIndexRequest;
import org.elasticsearch.common.xcontent.XContentType;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import java.io.IOException;

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

    @Autowired
    ESClientFactory esClientFactory;

    @RequestMapping("/saveIndex")
    public void saveIndex(@RequestBody Sport sport){
        ESClient esClient = esClientFactory.getClient("sport");
        esClient.saveIndex(sport);
    }

    @RequestMapping("/saveDocument")
    public void saveDocument(@RequestBody Sport sport) {
        ESClient esClient = esClientFactory.getClient("sport");
        esClient.saveDocument(sport);
    }

    @RequestMapping("/getDocument")
    public String getDocument(@RequestBody Sport sport) {
        ESClient esClient = esClientFactory.getClient("sport");
        return esClient.getDocument(sport);
    }
}