SpringBoot整合ElasticSearch執行查詢操作

對於ElasticSearch的介紹我就不多說了,能看到這篇博客想必你還是瞭解它是幹嘛的,在使用java去連接這個nosql的時候我建議還是事先去學習一下它的語句語法,當你會這些語法的時候用java的api調用它纔會更輕鬆明理,好了話不多說,直接貼代碼:

maven

<!--springdata對es-->
        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>6.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>6.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client</artifactId>
            <version>6.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-client-sniffer</artifactId>
            <version>6.2.4</version>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>


        <!-- https://mvnrepository.com/artifact/io.searchbox/jest -->
        <dependency>
            <groupId>io.searchbox</groupId>
            <artifactId>jest</artifactId>
            <version>5.3.3</version>
        </dependency>

        <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>

        <dependency>
            <groupId>com.bbossgroups.plugins</groupId>
            <artifactId>bboss-elasticsearch-spring-boot-starter</artifactId>
            <version>5.2.5</version>
        </dependency>

        <dependency>
            <groupId>net.sf.json-lib</groupId>
            <artifactId>json-lib</artifactId>
            <version>2.4</version>
            <classifier>jdk15</classifier>
        </dependency>

        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>transport</artifactId>
            <version>6.2.4</version>
        </dependency>

配置類

package com.hw.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.stereotype.Component;

import java.net.InetAddress;

/**
 * @program: springboot-03-elasticsearch
 * @description:
 * @author: hw
 **/

@Component
public class TransportClientUitl {
    private TransportClient transportClient;
    //transportClient的加載配置
    public TransportClient getClient() throws Exception{
            //連接服務器                                                             //my-application是es的集羣名,在配置文件中有
            transportClient  = new PreBuiltTransportClient(Settings.builder().put("cluster.name", "my-application").build())
                    .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.217.155"), 9300));//服務器地址和端口號
        return transportClient;
    }
}

測試方法

//自動注入
    @Autowired
    private TransportClientUitl clientUitl;
    @Test
    public void test2() throws Exception {
        SearchRequestBuilder searchBuilder = clientUitl.getClient().prepareSearch("blog");
        searchBuilder.setTypes("log");
        //設置每批讀取的的數據量
        searchBuilder.setSize(10000);
        //默認是查詢所有
        //searchBuilder.setQuery(QueryBuilders.queryStringQuery("*:*"));
        //設置 search context 維護1分鐘的有效期
        searchBuilder.setScroll(TimeValue.timeValueMillis(3));
        //查詢時間範圍內的數據
        //RangeQueryBuilder builder=QueryBuilders.rangeQuery("crawlerdate").from("2019-02-21").to("2019-03-01");
        //根據title來精確查詢
        MatchPhraseQueryBuilder builder = QueryBuilders.matchPhraseQuery("title", "jsonp解決跨域問題");
        //根據title來查詢
//        MatchQueryBuilder builder = QueryBuilders.matchQuery("title", "jsonp解決跨域問題");

        //獲得首次查詢結果
        SearchResponse searchResponse = searchBuilder.setQuery(builder).setPostFilter(builder).get();
        System.out.println("命中總數量:" + searchResponse.getHits().getTotalHits());
        //打印計數
        int count = 1;

        do {
            System.out.println("第" + count + "次打印數據：");
            for (SearchHit hit : searchResponse.getHits().getHits()) {
                String sourceAsString = hit.getSourceAsString();
                System.err.println(sourceAsString);
            }
            count++;
            //將scorllId循環傳遞
            searchResponse=clientUitl.getClient().prepareSearchScroll(searchResponse.getScrollId())
                    .setScroll(TimeValue.timeValueMillis(1)).execute().actionGet();
            //當searchHits的數組爲空的時候結束循環，至此數據全部讀取完畢
        } while (searchResponse.getHits().getHits().length != 0);



    }

其餘跟多查詢姿勢請看註釋或者查看源代碼或者文檔,實例中的基本夠用

 

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