|NO.Z.00037|——————————|BigDataEnd|——|Hadoop&ElasticSearch.V37|——|ELK.v37|集群|Java API操作ES.V5|

一、Java API操作ES：查询操作
### --- 查询操作：termquery

~~~     # 步骤八：查询操作：termquery
    @Test
    public void termQuery() throws IOException {
        //根据关键字 不分词检索
        final SearchRequest searchRequest = new SearchRequest("es_test");
        //sourcebuilder
        final SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        //指定检索的类型
        sourceBuilder.query(QueryBuilders.termQuery("studymodel", "online"));
        //添加sourcebuilder
        searchRequest.source(sourceBuilder);
        //执行查询
        final SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        //解析response
        final RestStatus status = response.status();
        System.out.println("查询结果状态：" + status);
        final SearchHits hits = response.getHits();
        final SearchHit[] hits1 = hits.getHits();
        for (SearchHit searchHit : hits1) { System.out.println("----------------------------");
            final Map<String, Object> map = searchHit.getSourceAsMap();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                System.out.println("查询的字段：" + entry.getKey() + "; 字段value:" + entry.getValue());
            }
        }
    }
### --- 编译打印

D:\JAVA\jdk1.8.0_231\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=62041:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit5-rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit-rt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.80000.Hadoop.project\elasticsearch\target\classes;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-high-level-client\7.9.0\elasticsearch-rest-high-level-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-client\7.9.0\elasticsearch-rest-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpclient\4.5.10\httpclient-4.5.10.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpasyncclient\4.1.4\httpasyncclient-4.1.4.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore-nio\4.4.12\httpcore-nio-4.4.12.jar;C:\Users\Administrator\.m2\repository\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\mapper-extras-client\7.9.0\mapper-extras-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\parent-join-client\7.9.0\parent-join-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\aggs-matrix-stats-client\7.9.0\aggs-matrix-stats-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\rank-eval-client\7.9.0\rank-eval-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\lang-mustache-client\7.9.0\lang-mustache-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\com\github\spullara\mustache\java\compiler\0.9.6\compiler-0.9.6.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch\7.9.0\elasticsearch-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-core\7.9.0\elasticsearch-core-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-secure-sm\7.9.0\elasticsearch-secure-sm-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-x-content\7.9.0\elasticsearch-x-content-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.26\snakeyaml-1.26.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.4\jackson-core-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-smile\2.10.4\jackson-dataformat-smile-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.4\jackson-dataformat-yaml-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-cbor\2.10.4\jackson-dataformat-cbor-2.10.4.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-geo\7.9.0\elasticsearch-geo-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-core\8.6.0\lucene-core-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-analyzers-common\8.6.0\lucene-analyzers-common-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-backward-codecs\8.6.0\lucene-backward-codecs-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-grouping\8.6.0\lucene-grouping-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-highlighter\8.6.0\lucene-highlighter-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-join\8.6.0\lucene-join-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-memory\8.6.0\lucene-memory-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-misc\8.6.0\lucene-misc-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queries\8.6.0\lucene-queries-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queryparser\8.6.0\lucene-queryparser-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-sandbox\8.6.0\lucene-sandbox-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial-extras\8.6.0\lucene-spatial-extras-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial3d\8.6.0\lucene-spatial3d-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-suggest\8.6.0\lucene-suggest-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-cli\7.9.0\elasticsearch-cli-7.9.0.jar;C:\Users\Administrator\.m2\repository\net\sf\jopt-simple\jopt-simple\5.0.2\jopt-simple-5.0.2.jar;C:\Users\Administrator\.m2\repository\com\carrotsearch\hppc\0.8.1\hppc-0.8.1.jar;C:\Users\Administrator\.m2\repository\joda-time\joda-time\2.10.4\joda-time-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\tdunning\t-digest\3.2\t-digest-3.2.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\jna\5.5.0\jna-5.5.0.jar;C:\Users\Administrator\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\testng\testng\6.14.3\testng-6.14.3.jar;C:\Users\Administrator\.m2\repository\com\beust\jcommander\1.72\jcommander-1.72.jar;C:\Users\Administrator\.m2\repository\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-core\2.5\log4j-core-2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.5\log4j-api-2.5.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.yanqi.es.ESDemo,termQuery
~~~输出参数：
查询结果状态：OK
----------------------------
查询的字段：price; 字段value:56.6
查询的字段：studymodel; 字段value:online
查询的字段：name; 字段value:hadoop添加文档
查询的字段：description; 字段value:hadoop技术栈
查询的字段：pic; 字段value:http://www.baidu.com

Process finished with exit code 0
二、查询操作：分页查询
### --- 查询操作：分页查询

~~~     # 步骤九：查询操作：分页查询
    @Test
    public void getAllDocWithPage() throws IOException {
        // 构建一个searchRequest对象
        final SearchRequest searchRequest = new SearchRequest();
        //指定索引
        searchRequest.indices("es_test");
        //指定查询条件 matchall
        final SearchSourceBuilder sourceBuilder = new SearchSourceBuilder(); sourceBuilder.query(QueryBuilders.matchAllQuery());
        //指定分页
        sourceBuilder.from(0);
        sourceBuilder.size(1);
        searchRequest.source(sourceBuilder);
        //执行检索 RequestOptions options参数: 请求选项(例如请求头),如果不需要自定义任何内容,使用
        RequestOptions aDefault = RequestOptions.DEFAULT;
        final SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        //解析响应结果
        final RestStatus status = response.status();
        System.out.println("查询结果状态：" + status);
        final SearchHits hits = response.getHits();
        final SearchHit[] hits1 = hits.getHits();
        for (SearchHit searchHit : hits1) {
            System.out.println("----------------------------");
            final Map<String, Object> map = searchHit.getSourceAsMap();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                System.out.println("查询的字段：" + entry.getKey() + "; 字段value:" + entry.getValue());
            }
        }
    }
### --- 编译打印

D:\JAVA\jdk1.8.0_231\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=59848:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit5-rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit-rt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.80000.Hadoop.project\elasticsearch\target\classes;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-high-level-client\7.9.0\elasticsearch-rest-high-level-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-client\7.9.0\elasticsearch-rest-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpclient\4.5.10\httpclient-4.5.10.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpasyncclient\4.1.4\httpasyncclient-4.1.4.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore-nio\4.4.12\httpcore-nio-4.4.12.jar;C:\Users\Administrator\.m2\repository\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\mapper-extras-client\7.9.0\mapper-extras-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\parent-join-client\7.9.0\parent-join-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\aggs-matrix-stats-client\7.9.0\aggs-matrix-stats-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\rank-eval-client\7.9.0\rank-eval-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\lang-mustache-client\7.9.0\lang-mustache-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\com\github\spullara\mustache\java\compiler\0.9.6\compiler-0.9.6.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch\7.9.0\elasticsearch-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-core\7.9.0\elasticsearch-core-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-secure-sm\7.9.0\elasticsearch-secure-sm-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-x-content\7.9.0\elasticsearch-x-content-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.26\snakeyaml-1.26.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.4\jackson-core-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-smile\2.10.4\jackson-dataformat-smile-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.4\jackson-dataformat-yaml-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-cbor\2.10.4\jackson-dataformat-cbor-2.10.4.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-geo\7.9.0\elasticsearch-geo-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-core\8.6.0\lucene-core-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-analyzers-common\8.6.0\lucene-analyzers-common-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-backward-codecs\8.6.0\lucene-backward-codecs-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-grouping\8.6.0\lucene-grouping-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-highlighter\8.6.0\lucene-highlighter-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-join\8.6.0\lucene-join-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-memory\8.6.0\lucene-memory-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-misc\8.6.0\lucene-misc-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queries\8.6.0\lucene-queries-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queryparser\8.6.0\lucene-queryparser-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-sandbox\8.6.0\lucene-sandbox-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial-extras\8.6.0\lucene-spatial-extras-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial3d\8.6.0\lucene-spatial3d-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-suggest\8.6.0\lucene-suggest-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-cli\7.9.0\elasticsearch-cli-7.9.0.jar;C:\Users\Administrator\.m2\repository\net\sf\jopt-simple\jopt-simple\5.0.2\jopt-simple-5.0.2.jar;C:\Users\Administrator\.m2\repository\com\carrotsearch\hppc\0.8.1\hppc-0.8.1.jar;C:\Users\Administrator\.m2\repository\joda-time\joda-time\2.10.4\joda-time-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\tdunning\t-digest\3.2\t-digest-3.2.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\jna\5.5.0\jna-5.5.0.jar;C:\Users\Administrator\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\testng\testng\6.14.3\testng-6.14.3.jar;C:\Users\Administrator\.m2\repository\com\beust\jcommander\1.72\jcommander-1.72.jar;C:\Users\Administrator\.m2\repository\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-core\2.5\log4j-core-2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.5\log4j-api-2.5.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.yanqi.es.ESDemo,getAllDocWithPage
~~~输出参数：
查询结果状态：OK
----------------------------
查询的字段：price; 字段value:66.6
查询的字段：studymodel; 字段value:offline
查询的字段：name; 字段value:es添加文档
查询的字段：description; 字段value:es技术栈
查询的字段：pic; 字段value:wwww.google.com

Process finished with exit code 0
三、查询操作：对返回的source字段进行过滤
### --- 查询操作：对返回的source字段进行过滤

~~~     # 步骤十：查询操作：对返回的source字段进行过滤
    @Test
    public void searchWithLimit() throws IOException {
        // 构建一个searchRequest对象
        final SearchRequest searchRequest = new SearchRequest();
        //指定索引
        searchRequest.indices("es_test");
        //指定查询条件 matchall
        final SearchSourceBuilder sourceBuilder = new SearchSourceBuilder(); sourceBuilder.query(QueryBuilders.matchAllQuery());
        //准备两个数组，包含，不包含
        final String[] includesArr = {"name"};
        final String[] excludesArr = {}; sourceBuilder.fetchSource(includesArr, excludesArr); searchRequest.source(sourceBuilder);
        //执行检索 RequestOptions options参数: 请求选项(例如请求头),如果不需要自定义任何内容,使用
        RequestOptions aDefault = RequestOptions.DEFAULT;
        final SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        //解析响应结果
        final RestStatus status = response.status(); System.out.println("查询结果状态：" + status);
        final SearchHits hits = response.getHits();
        final SearchHit[] hits1 = hits.getHits();
        for (SearchHit searchHit : hits1) { System.out.println("----------------------------");
            final Map<String, Object> map = searchHit.getSourceAsMap();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                System.out.println("查询的字段：" + entry.getKey() + "; 字段value:" + entry.getValue());
            }
        }
    }
### --- 编译打印

D:\JAVA\jdk1.8.0_231\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=59886:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit5-rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit-rt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.80000.Hadoop.project\elasticsearch\target\classes;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-high-level-client\7.9.0\elasticsearch-rest-high-level-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-client\7.9.0\elasticsearch-rest-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpclient\4.5.10\httpclient-4.5.10.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpasyncclient\4.1.4\httpasyncclient-4.1.4.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore-nio\4.4.12\httpcore-nio-4.4.12.jar;C:\Users\Administrator\.m2\repository\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\mapper-extras-client\7.9.0\mapper-extras-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\parent-join-client\7.9.0\parent-join-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\aggs-matrix-stats-client\7.9.0\aggs-matrix-stats-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\rank-eval-client\7.9.0\rank-eval-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\lang-mustache-client\7.9.0\lang-mustache-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\com\github\spullara\mustache\java\compiler\0.9.6\compiler-0.9.6.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch\7.9.0\elasticsearch-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-core\7.9.0\elasticsearch-core-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-secure-sm\7.9.0\elasticsearch-secure-sm-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-x-content\7.9.0\elasticsearch-x-content-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.26\snakeyaml-1.26.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.4\jackson-core-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-smile\2.10.4\jackson-dataformat-smile-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.4\jackson-dataformat-yaml-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-cbor\2.10.4\jackson-dataformat-cbor-2.10.4.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-geo\7.9.0\elasticsearch-geo-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-core\8.6.0\lucene-core-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-analyzers-common\8.6.0\lucene-analyzers-common-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-backward-codecs\8.6.0\lucene-backward-codecs-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-grouping\8.6.0\lucene-grouping-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-highlighter\8.6.0\lucene-highlighter-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-join\8.6.0\lucene-join-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-memory\8.6.0\lucene-memory-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-misc\8.6.0\lucene-misc-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queries\8.6.0\lucene-queries-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queryparser\8.6.0\lucene-queryparser-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-sandbox\8.6.0\lucene-sandbox-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial-extras\8.6.0\lucene-spatial-extras-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial3d\8.6.0\lucene-spatial3d-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-suggest\8.6.0\lucene-suggest-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-cli\7.9.0\elasticsearch-cli-7.9.0.jar;C:\Users\Administrator\.m2\repository\net\sf\jopt-simple\jopt-simple\5.0.2\jopt-simple-5.0.2.jar;C:\Users\Administrator\.m2\repository\com\carrotsearch\hppc\0.8.1\hppc-0.8.1.jar;C:\Users\Administrator\.m2\repository\joda-time\joda-time\2.10.4\joda-time-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\tdunning\t-digest\3.2\t-digest-3.2.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\jna\5.5.0\jna-5.5.0.jar;C:\Users\Administrator\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\testng\testng\6.14.3\testng-6.14.3.jar;C:\Users\Administrator\.m2\repository\com\beust\jcommander\1.72\jcommander-1.72.jar;C:\Users\Administrator\.m2\repository\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-core\2.5\log4j-core-2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.5\log4j-api-2.5.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.yanqi.es.ESDemo,searchWithLimit
~~~输出参数：
查询结果状态：OK
----------------------------
查询的字段：name; 字段value:es添加文档
----------------------------
查询的字段：name; 字段value:hadoop添加文档

Process finished with exit code 0
四、查询操作：排序 sort
### --- 查询操作：排序 sort

~~~     # 步骤十一：查询操作：排序 sort
    @Test
    public void searchWithSort() throws IOException {
        // 构建一个searchRequest对象
        final SearchRequest searchRequest = new SearchRequest();
        //指定索引
        searchRequest.indices("book");
        //指定查询条件 matchall
        final SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        //指定排序规则
        sourceBuilder.sort(new FieldSortBuilder("price").order( SortOrder.DESC)); sourceBuilder.query(QueryBuilders.matchAllQuery());
        searchRequest.source(sourceBuilder);
        //执行检索 RequestOptions options参数: 请求选项(例如请求头),如果不需要自定义任何内容,使用
        RequestOptions aDefault = RequestOptions.DEFAULT;
        final SearchResponse response = client.search(searchRequest, RequestOptions.DEFAULT);
        //解析响应结果
        final RestStatus status = response.status(); System.out.println("查询结果状态：" + status);
        final SearchHits hits = response.getHits();
        final SearchHit[] hits1 = hits.getHits();
        for (SearchHit searchHit : hits1) { System.out.println("----------------------------");
            final Map<String, Object> map = searchHit.getSourceAsMap();
            for (Map.Entry<String, Object> entry : map.entrySet()) {
                System.out.println("查询的字段：" + entry.getKey() + "; 字段value:" + entry.getValue());
            }
        }
### --- 编译打印

D:\JAVA\jdk1.8.0_231\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=63591:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit5-rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit-rt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.80000.Hadoop.project\elasticsearch\target\classes;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-high-level-client\7.9.0\elasticsearch-rest-high-level-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-client\7.9.0\elasticsearch-rest-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpclient\4.5.10\httpclient-4.5.10.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpasyncclient\4.1.4\httpasyncclient-4.1.4.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore-nio\4.4.12\httpcore-nio-4.4.12.jar;C:\Users\Administrator\.m2\repository\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\mapper-extras-client\7.9.0\mapper-extras-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\parent-join-client\7.9.0\parent-join-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\aggs-matrix-stats-client\7.9.0\aggs-matrix-stats-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\rank-eval-client\7.9.0\rank-eval-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\lang-mustache-client\7.9.0\lang-mustache-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\com\github\spullara\mustache\java\compiler\0.9.6\compiler-0.9.6.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch\7.9.0\elasticsearch-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-core\7.9.0\elasticsearch-core-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-secure-sm\7.9.0\elasticsearch-secure-sm-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-x-content\7.9.0\elasticsearch-x-content-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.26\snakeyaml-1.26.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.4\jackson-core-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-smile\2.10.4\jackson-dataformat-smile-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.4\jackson-dataformat-yaml-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-cbor\2.10.4\jackson-dataformat-cbor-2.10.4.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-geo\7.9.0\elasticsearch-geo-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-core\8.6.0\lucene-core-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-analyzers-common\8.6.0\lucene-analyzers-common-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-backward-codecs\8.6.0\lucene-backward-codecs-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-grouping\8.6.0\lucene-grouping-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-highlighter\8.6.0\lucene-highlighter-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-join\8.6.0\lucene-join-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-memory\8.6.0\lucene-memory-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-misc\8.6.0\lucene-misc-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queries\8.6.0\lucene-queries-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queryparser\8.6.0\lucene-queryparser-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-sandbox\8.6.0\lucene-sandbox-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial-extras\8.6.0\lucene-spatial-extras-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial3d\8.6.0\lucene-spatial3d-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-suggest\8.6.0\lucene-suggest-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-cli\7.9.0\elasticsearch-cli-7.9.0.jar;C:\Users\Administrator\.m2\repository\net\sf\jopt-simple\jopt-simple\5.0.2\jopt-simple-5.0.2.jar;C:\Users\Administrator\.m2\repository\com\carrotsearch\hppc\0.8.1\hppc-0.8.1.jar;C:\Users\Administrator\.m2\repository\joda-time\joda-time\2.10.4\joda-time-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\tdunning\t-digest\3.2\t-digest-3.2.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\jna\5.5.0\jna-5.5.0.jar;C:\Users\Administrator\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\testng\testng\6.14.3\testng-6.14.3.jar;C:\Users\Administrator\.m2\repository\com\beust\jcommander\1.72\jcommander-1.72.jar;C:\Users\Administrator\.m2\repository\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-core\2.5\log4j-core-2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.5\log4j-api-2.5.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.yanqi.es.ESDemo,searchWithSort
~~~编译打印：
查询结果状态：OK
----------------------------
查询的字段：price; 字段value:999.99
查询的字段：name; 字段value:ElasticSearch
查询的字段：description; 字段value:Elasticsearch是一个基于Lucene的搜索服务器。它提供了一个分布式多用户能力的全文搜索引擎，基于RESTful web接口。Elasticsearch是用Java语言开发的，并作为Apache许可条款下的开放源码发布，是一种流行的企业级搜索引擎。Elasticsearch用于云计算中，能够达到实时搜索，稳定，可靠，快速，安装使用方便。官方客户端在Java、.NET（C#）、PHP、Python、Apache Groovy、Ruby和许多其他语言中都是可用的。根据DB-Engines的排名显示，Elasticsearch是最受欢迎的企业搜索引擎，其次是Apache Solr，也是基于Lucene。
查询的字段：timestamp; 字段value:2021-11-15 10:11:35
----------------------------
查询的字段：price; 字段value:620.45
查询的字段：name; 字段value:Hadoop
查询的字段：description; 字段value:The Apache Hadoop software library is a framework that allows for the distributed processing of large data sets across clusters of computers using simple programming models.
查询的字段：timestamp; 字段value:2021-11-22 19:18:35
----------------------------
查询的字段：price; 字段value:320.45
查询的字段：name; 字段value:test
查询的字段：description; 字段value:Solr is highly scalable, providing fully fault tolerant distributed indexing, search and analytics. It exposes Lucenes features through easy to use JSON/HTTP interfaces or native clients for Java and other languages.
查询的字段：timestamp; 字段value:2021-11-21 17:11:35
----------------------------
查询的字段：price; 字段value:100.99
查询的字段：name; 字段value:test14

Process finished with exit code 0
五、查询操作：聚合分析
### --- 查询操作：聚合分析

~~~     # 步骤十二：查询操作：聚合分析
    // 按照name分组，对组内计算一个avg的price
    @Test
    public void searchAgg() throws IOException {
        // 构建一个searchRequest对象
        final SearchRequest searchRequest = new SearchRequest();
        //指定索引
        searchRequest.indices("book");
        //指定查询条件 matchall
        final SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
        //指定聚合分析的规则
        final TermsAggregationBuilder aggregationBuilder = AggregationBuilders.terms("name_group").field("name");
        aggregationBuilder.subAggregation(AggregationBuilders.avg("avg_price").field("price"));
        sourceBuilder.aggregation(aggregationBuilder);
        searchRequest.source(sourceBuilder);
        //执行检索 RequestOptions options参数: 请求选项(例如请求头),如果不需要自定义任何内容,使用
        RequestOptions aDefault = RequestOptions.DEFAULT;
        final SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
        //解析响应结果
        final Terms name_group = searchResponse.getAggregations().get("name_group");
        for (Terms.Bucket bucket : name_group.getBuckets()) {
            final Object key = bucket.getKey();
            final Avg avg_price = bucket.getAggregations().get("avg_price");
            System.out.println("name：" + key + ",平均价格：" + avg_price.getValue());
        }
    }
### --- 编译打印

D:\JAVA\jdk1.8.0_231\bin\java.exe -ea -Didea.test.cyclic.buffer.size=1048576 "-javaagent:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar=50768:D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\bin" -Dfile.encoding=UTF-8 -classpath "D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\lib\idea_rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit5-rt.jar;D:\IntelliJIDEA\IntelliJ IDEA 2019.3.3\plugins\junit\lib\junit-rt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\charsets.jar;D:\JAVA\jdk1.8.0_231\jre\lib\deploy.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\access-bridge-64.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\cldrdata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\dnsns.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jaccess.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\jfxrt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\localedata.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\nashorn.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunec.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunjce_provider.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunmscapi.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\sunpkcs11.jar;D:\JAVA\jdk1.8.0_231\jre\lib\ext\zipfs.jar;D:\JAVA\jdk1.8.0_231\jre\lib\javaws.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jce.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfr.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jfxswt.jar;D:\JAVA\jdk1.8.0_231\jre\lib\jsse.jar;D:\JAVA\jdk1.8.0_231\jre\lib\management-agent.jar;D:\JAVA\jdk1.8.0_231\jre\lib\plugin.jar;D:\JAVA\jdk1.8.0_231\jre\lib\resources.jar;D:\JAVA\jdk1.8.0_231\jre\lib\rt.jar;E:\NO.Z.80000.Hadoop.project\elasticsearch\target\classes;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-high-level-client\7.9.0\elasticsearch-rest-high-level-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\client\elasticsearch-rest-client\7.9.0\elasticsearch-rest-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpclient\4.5.10\httpclient-4.5.10.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore\4.4.12\httpcore-4.4.12.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpasyncclient\4.1.4\httpasyncclient-4.1.4.jar;C:\Users\Administrator\.m2\repository\org\apache\httpcomponents\httpcore-nio\4.4.12\httpcore-nio-4.4.12.jar;C:\Users\Administrator\.m2\repository\commons-codec\commons-codec\1.11\commons-codec-1.11.jar;C:\Users\Administrator\.m2\repository\commons-logging\commons-logging\1.1.3\commons-logging-1.1.3.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\mapper-extras-client\7.9.0\mapper-extras-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\parent-join-client\7.9.0\parent-join-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\aggs-matrix-stats-client\7.9.0\aggs-matrix-stats-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\rank-eval-client\7.9.0\rank-eval-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\plugin\lang-mustache-client\7.9.0\lang-mustache-client-7.9.0.jar;C:\Users\Administrator\.m2\repository\com\github\spullara\mustache\java\compiler\0.9.6\compiler-0.9.6.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch\7.9.0\elasticsearch-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-core\7.9.0\elasticsearch-core-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-secure-sm\7.9.0\elasticsearch-secure-sm-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-x-content\7.9.0\elasticsearch-x-content-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\yaml\snakeyaml\1.26\snakeyaml-1.26.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\core\jackson-core\2.10.4\jackson-core-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-smile\2.10.4\jackson-dataformat-smile-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-yaml\2.10.4\jackson-dataformat-yaml-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\fasterxml\jackson\dataformat\jackson-dataformat-cbor\2.10.4\jackson-dataformat-cbor-2.10.4.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-geo\7.9.0\elasticsearch-geo-7.9.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-core\8.6.0\lucene-core-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-analyzers-common\8.6.0\lucene-analyzers-common-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-backward-codecs\8.6.0\lucene-backward-codecs-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-grouping\8.6.0\lucene-grouping-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-highlighter\8.6.0\lucene-highlighter-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-join\8.6.0\lucene-join-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-memory\8.6.0\lucene-memory-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-misc\8.6.0\lucene-misc-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queries\8.6.0\lucene-queries-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-queryparser\8.6.0\lucene-queryparser-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-sandbox\8.6.0\lucene-sandbox-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial-extras\8.6.0\lucene-spatial-extras-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-spatial3d\8.6.0\lucene-spatial3d-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\apache\lucene\lucene-suggest\8.6.0\lucene-suggest-8.6.0.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\elasticsearch-cli\7.9.0\elasticsearch-cli-7.9.0.jar;C:\Users\Administrator\.m2\repository\net\sf\jopt-simple\jopt-simple\5.0.2\jopt-simple-5.0.2.jar;C:\Users\Administrator\.m2\repository\com\carrotsearch\hppc\0.8.1\hppc-0.8.1.jar;C:\Users\Administrator\.m2\repository\joda-time\joda-time\2.10.4\joda-time-2.10.4.jar;C:\Users\Administrator\.m2\repository\com\tdunning\t-digest\3.2\t-digest-3.2.jar;C:\Users\Administrator\.m2\repository\org\hdrhistogram\HdrHistogram\2.1.9\HdrHistogram-2.1.9.jar;C:\Users\Administrator\.m2\repository\org\elasticsearch\jna\5.5.0\jna-5.5.0.jar;C:\Users\Administrator\.m2\repository\junit\junit\4.12\junit-4.12.jar;C:\Users\Administrator\.m2\repository\org\hamcrest\hamcrest-core\1.3\hamcrest-core-1.3.jar;C:\Users\Administrator\.m2\repository\org\testng\testng\6.14.3\testng-6.14.3.jar;C:\Users\Administrator\.m2\repository\com\beust\jcommander\1.72\jcommander-1.72.jar;C:\Users\Administrator\.m2\repository\org\apache-extras\beanshell\bsh\2.0b6\bsh-2.0b6.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-core\2.5\log4j-core-2.5.jar;C:\Users\Administrator\.m2\repository\org\apache\logging\log4j\log4j-api\2.5\log4j-api-2.5.jar" com.intellij.rt.junit.JUnitStarter -ideVersion5 -junit4 com.yanqi.es.ESDemo,searchAgg
~~~输出参数：# --- 编译时若报错：一句下列报错处理思路处理
name：test,平均价格：210.7200050354004
name：14,平均价格：100.98999786376953
name：elasticsearch,平均价格：999.989990234375
name：hadoop,平均价格：620.4500122070312
name：test14,平均价格：100.98999786376953

Process finished with exit code 0
附录一：报错处理一：
### --- 报错现象：编译时报错：聚合分析时报错：

"Fielddata is disabled on text fields by default. Set fielddata=true on [name] 
in order to load fielddata in memory by uninverting the inverted index. 
Note that this can however use significant memory. 
### --- 解决方案一：
~~~     官方解释：https://www.elastic.co/guide/en/elasticsearch/reference/current/fielddata.html

### --- 解决方案二：在kibana中执行
PUT /book/_mapping
{
  "properties": {
  "name": {
   "type": "text",
   "analyzer":"ik_max_word",
   "fielddata": true
  }
  }
}
 
 
 
 
 
 
 
 
 
Walter Savage Landor:strove with none,for none was worth my strife.Nature I loved and, next to Nature, Art:I warm'd both hands before the fire of life.It sinks, and I am ready to depart
                                                                                                                                                   ——W.S.Landor
 

 

posted on   yanqi_vip  阅读(35)  评论(0)  编辑  收藏  举报

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