|NO.Z.00036|——————————|BigDataEnd|——|Hadoop&ElasticSearch.V36|——|ELK.v36|集群|Java API操作ES.V4|

一、Java API操作ES：文档操作
### --- 编程实现：文档操作；添加doc

~~~     # 步骤五：文档操作；添加doc
    @Test
    public void addDoc() throws IOException {
        //准备一个添加文档的对象
        final IndexRequest indexRequest = new IndexRequest("es_test").id("1");
        /*
        {
        "name": "spark添加文档",
        "description": "spark技术栈",
        "studymodel":"online",
        "pic": "http://www.baidu.com"
        }
        */
        //准备文档内容
        String str = " {\n" +
                " \"name\": \"spark添加文档\",\n" +
                " \"description\": \"spark技术栈\",\n" +
                " \"studymodel\":\"online\",\n" +
                " \"pic\": \"http://www.baidu.com\"\n" +
                " }";
        indexRequest.source(str, XContentType.JSON);
        //执行添加动作
        final IndexResponse index = client.index(indexRequest, RequestOptions.DEFAULT);
        System.out.println(index.status());
    }
### --- 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=54401: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,addDoc
~~~输出参数
CREATED

Process finished with exit code 0
二、添加doc查询文档
### --- 添加doc查询文档

~~~     # 步骤六：添加doc查询文档
    @Test
    public void getDoc() throws IOException {
        //准备一个查询的reqeust请求
        final GetRequest getRequest = new GetRequest("es_test");
        //设定id he
        getRequest.id("1");
        //执行查询
        final GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
        final Map<String, Object> sourceAsMap = getResponse.getSourceAsMap();
        System.out.println(sourceAsMap);
    }
### --- 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=54444: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,getDoc
~~~输出参数
{studymodel=online, name=spark添加文档, description=spark技术栈, pic=http://www.baidu.com}

Process finished with exit code 0
三、查询所有文档
### --- 查询所有文档

~~~     # 步骤七：查询所有文档
    @Test
    public void getAllDoc() 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());
        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
        final 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=58747: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,getAllDoc
~~~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
----------------------------
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
四、准备数据
### --- 准备数据一：

~~~     # 添加数据一：
   POST /es_test/_doc/1
    { 
        "name": "hadoop添加文档", 
            "description": "hadoop技术栈", 
            "studymodel":"online", 
            "pic": "http://www.baidu.com", "price":56.6 
    }
### --- 准备数据二：

~~~     # 添加数据二：
    POST /es_test/_doc/2
    { 
        "name": "es添加文档", 
            "description": "es技术栈", 
            "studymodel":"offline", 
            "pic": "wwww.google.com", 
            "price":66.6 
    }
五、编程实现：定版编程：创建索引
package com.yanqi.es;

import org.apache.http.HttpHost;
import org.elasticsearch.action.admin.indices.delete.DeleteIndexRequest;
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.action.support.master.AcknowledgedResponse;
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.CreateIndexResponse;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentBuilder;
import org.elasticsearch.common.xcontent.XContentFactory;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.rest.RestStatus;
import org.elasticsearch.search.SearchHit;
import org.elasticsearch.search.SearchHits;
import org.elasticsearch.search.builder.SearchSourceBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import java.io.IOException;
import java.util.Map;

public class ESDemo {

    // 步骤一：准备一个highlevel client
    RestHighLevelClient client;
    @Before
    public void init() {
        final RestHighLevelClient highLevelClient = new  RestHighLevelClient( RestClient.builder(
                new HttpHost("hadoop01", 9200, "http"),
                new HttpHost("hadoop02", 9200, "http"),
                new HttpHost("hadoop03", 9200, "http")
        ));
        // System.out.println(highLevelClient.cluster().toString());
        client = highLevelClient;
    }

    // 最后步骤：关闭客户端
    @After
    public void destory() {
        if (client != null) {
            try {
                client.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    // 步骤二：方法一：创建索引
    @Test
    public void createIndex() { final CreateIndexRequest indexRequest = new CreateIndexRequest("es_test");
        //准备mapping映射信息
        String str = "{\n" +
                " \"settings\": {},\n" +
                " \"mappings\": {\n" +
                " \"properties\": {\n" +
                " \"description\": {\n" +
                " \"type\": \"text\",\n" +
                " \"analyzer\": \"ik_max_word\"\n" +
                " },\n" +
                " \"name\": {\n" +
                " \"type\": \"text\"\n" +
                " },\n" +
                " \"pic\": {\n" +
                " \"type\": \"text\",\n" +
                " \"index\": false\n" +
                " },\n" +
                " \"studymodel\": {\n" +
                " \"type\": \"text\"\n" +
                " }\n" +
                " }\n" +
                " }\n" +
                " }";
        //把映射信息添加到request对象中
        indexRequest.source(str, XContentType.JSON);
        //创建索引
        try { final CreateIndexResponse createIndexResponse = client.indices().create(indexRequest, RequestOptions.DEFAULT);
            final boolean acknowledged = createIndexResponse.isAcknowledged();
            System.out.println("创建结果：" + acknowledged);
        } catch (IOException e) { e.printStackTrace();
        }
    }
    // 步骤三：方法二：创建索引
    @Test
    public void createIndex2() throws IOException { final CreateIndexRequest indexRequest = new CreateIndexRequest("es_test");
    //准备mapping映射信息
        // String str = "{\n" +
        // "
        // " \"mappings\": {\n" +
        // " \"properties\": {\n" +
        // " \"description\": {\n" +
        // " \"type\": \"text\",\n" +
        // " \"analyzer\": \"ik_max_word\"\n" +
        // " },\n" +
        // " \"name\": {\n" +
        // " \"type\": \"text\"\n" +
        // " },\n" +
        // " \"pic\": {\n" +
        // " \"type\": \"text\",\n" +
        // " \"index\": false\n" +
        // " },\n" +
        // " \"studymodel\": {\n" +
        // " \"type\": \"text\"\n" +
        // " }\n" +
        // " }\n" +
        // " }\n" +
        // " }";
        // 把映射信息添加到request对象中
        // 指定setting信息
        indexRequest.settings( Settings.builder()
                        .put("index.number_of_shards", 5)
                        .put("index.number_of_replicas", 1)
        );
        //指定mapping信息
        final XContentBuilder xContentBuilder = XContentFactory.jsonBuilder();
        xContentBuilder.startObject();
        xContentBuilder.startObject("properties");
        xContentBuilder.startObject("description")
                .field("type", "text")
                .field("analyzer", "ik_max_word")
                .endObject(); xContentBuilder.startObject("name")
                .field("type", "text")
                .endObject(); xContentBuilder.startObject("pic")
                .field("type", "text")
                .field("index", "false")
                .endObject(); xContentBuilder.startObject("studymodel")
                .field("type", "text")
                .endObject(); xContentBuilder.endObject(); xContentBuilder.endObject(); indexRequest.mapping(xContentBuilder);
                //创建索引
        try {
            final CreateIndexResponse createIndexResponse = client.indices().create(indexRequest, RequestOptions.DEFAULT);
            final boolean acknowledged = createIndexResponse.isAcknowledged();
            System.out.println("创建结果：" + acknowledged);
        } catch (IOException e) { e.printStackTrace();
        }
    }
    // 步骤四：删除索引
    @Test
    public void deleteIndex() throws IOException {
        //创建一个删除索引的请求
        final DeleteIndexRequest indexRequest = new DeleteIndexRequest("es_test");
        final AcknowledgedResponse delete = client.indices().delete(indexRequest, RequestOptions.DEFAULT);
        System.out.println(delete.isAcknowledged());
    }
    // 步骤五：文档操作；添加doc
    @Test
    public void addDoc() throws IOException {
        //准备一个添加文档的对象
        final IndexRequest indexRequest = new IndexRequest("es_test").id("1");
        /*
        {
        "name": "spark添加文档",
        "description": "spark技术栈",
        "studymodel":"online",
        "pic": "http://www.baidu.com"
        }
        */
        //准备文档内容
        String str = " {\n" +
                " \"name\": \"spark添加文档\",\n" +
                " \"description\": \"spark技术栈\",\n" +
                " \"studymodel\":\"online\",\n" +
                " \"pic\": \"http://www.baidu.com\"\n" +
                " }";
        indexRequest.source(str, XContentType.JSON);
        //执行添加动作
        final IndexResponse index = client.index(indexRequest, RequestOptions.DEFAULT);
        System.out.println(index.status());
    }
    // 步骤六：添加doc查询文档
    @Test
    public void getDoc() throws IOException {
        //准备一个查询的reqeust请求
        final GetRequest getRequest = new GetRequest("es_test");
        //设定id he
        getRequest.id("1");
        //执行查询
        final GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
        final Map<String, Object> sourceAsMap = getResponse.getSourceAsMap();
        System.out.println(sourceAsMap);
    }
    // 步骤七：查询所有文档
    @Test
    public void getAllDoc() 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());
        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
        final 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());
            }
        }
    }
}
 
 
 
 
 
 
 
 
 
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(37)  评论(0)  编辑  收藏  举报

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