HighLevelRestApi管理ES

https://blog.csdn.net/u010177412/article/details/82835230

https://www.cnblogs.com/kevingrace/p/10682264.html

https://www.cnblogs.com/slowcity/p/11727579.html

https://www.cnblogs.com/swordfall/p/9981883.html

es框架： https://gitee.com/wzlee/ESClientRHL/

es代码示例: https://www.cnblogs.com/gmhappy/p/9472383.html

https://www.jianshu.com/p/3cb80dcf514f

https://blog.csdn.net/u010177412/article/details/82835230

示例代码

package com.example.conf;

import org.apache.http.Header;
import org.apache.http.HttpHost;
import org.apache.http.auth.AuthScope;
import org.apache.http.auth.UsernamePasswordCredentials;
import org.apache.http.client.CredentialsProvider;
import org.apache.http.impl.client.BasicCredentialsProvider;
import org.apache.http.impl.nio.client.HttpAsyncClientBuilder;
import org.apache.http.util.EntityUtils;
import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.action.admin.indices.get.GetIndexRequest;
import org.elasticsearch.client.*;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentType;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

public class ESTest {

    public static void main(String[] args) throws IOException {
        String username = "admin";
        String password = "admin123";
        String hostname = "192.168.49.131";
        int port = 9200;

        final CredentialsProvider provider = new BasicCredentialsProvider();

        provider.setCredentials(AuthScope.ANY,
                new UsernamePasswordCredentials(username, password));

        RestClientBuilder clientBuilder = RestClient.builder(new HttpHost(hostname, port));

        clientBuilder.setHttpClientConfigCallback(new RestClientBuilder.HttpClientConfigCallback() {
            public HttpAsyncClientBuilder customizeHttpClient(HttpAsyncClientBuilder httpClientBuilder) {
                httpClientBuilder.disableAuthCaching();
                return httpClientBuilder.setDefaultCredentialsProvider(provider);
            }
        });
        RestClient restClient = clientBuilder.build();

        RestHighLevelClient highLevelClient = new RestHighLevelClient(clientBuilder);

        Request request = new Request(
                "GET",
                "_cat/indices?v");
        Response response = restClient.performRequest(request);
        HttpHost host = response.getHost();
        int statusCode = response.getStatusLine().getStatusCode();
        Header[] headers = response.getHeaders();
        String responseBody = EntityUtils.toString(response.getEntity());

        String index = "es-demo-" + todayDate();

        try {
            indexCreate1(highLevelClient, index);
        } catch (Exception e){
            e.printStackTrace();
        }


        restClient.close();
        highLevelClient.close();
    }

    /**
     * 验证索引是否存在
     *
     * @param index
     *            索引名称
     * @return
     * @throws Exception
     */
    public static boolean indexExists(RestHighLevelClient client, String index) throws Exception {
        GetIndexRequest request = new GetIndexRequest();
        request.indices(index);
        request.local(false);
        request.humanReadable(true);

        boolean exists = client.indices().exists(request);
        return exists;
    }

    /**
     *
     * @param index
     * @param indexType
     * @param properties
     *            结构: {name:{type:text}} {age:{type:integer}}
     * @return
     * @throws Exception
     */
    public static boolean indexCreate(RestHighLevelClient client, String index, String indexType,
                               Map<String, Object> properties) throws Exception {

        if (indexExists(client, index)) {
            return true;
        }
        CreateIndexRequest request = new CreateIndexRequest(index);
        request.settings(Settings.builder().put("index.number_of_shards", 3)
                .put("index.number_of_replicas", 1));

        Map<String, Object> jsonMap = new HashMap<>();
        Map<String, Object> mapping = new HashMap<>();
        mapping.put("properties", properties);
        jsonMap.put(indexType, mapping);
        request.mapping(indexType, jsonMap);

        CreateIndexResponse createIndexResponse = client.indices().create(
                request, RequestOptions.DEFAULT);
        boolean acknowledged = createIndexResponse.isAcknowledged();
        return acknowledged;
    }

    /**
     *
     * @param client
     * @param index
     * @return
     * @throws Exception
     */
    public static boolean indexCreate1(RestHighLevelClient client, String index)
                                throws Exception {
        if (indexExists(client, index)) {
            return true;
        }

        CreateIndexRequest request = new CreateIndexRequest(index);
        request.settings(Settings.builder()
                .put("index.number_of_shards", 3)
                .put("index.number_of_replicas", 1)
        );
        request.mapping("_doc",
                "{
" +
                        "  "_doc": {
" +
                        "    "properties": {
" +
                        "      "message": {
" +
                        "        "type": "text"
" +
                        "      }
" +
                        "    }
" +
                        "  }
" +
                        "}",
                XContentType.JSON);
        CreateIndexResponse createIndexResponse = client.indices().create(
                request, RequestOptions.DEFAULT);
        boolean acknowledged = createIndexResponse.isAcknowledged();
        return acknowledged;
    }

    public static String todayDate() {
        Date date=new Date();
        System.out.println(date);
        SimpleDateFormat dateFormat=new SimpleDateFormat("YYYY.MM.dd");//设置当前时间的格式，为年-月-日
        System.out.println(dateFormat.format(date));
        return dateFormat.format(date);
    }

}

　　

pom文件

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.2.4.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.example</groupId>
    <artifactId>demo-es</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>demo-es</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <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>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.elasticsearch</groupId>
            <artifactId>elasticsearch</artifactId>
            <version>6.4.3</version>
        </dependency>

        <dependency>
            <groupId>org.elasticsearch.client</groupId>
            <artifactId>elasticsearch-rest-high-level-client</artifactId>
            <version>6.4.3</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
        </plugins>
    </build>

</project>

　　

示例代码2

https://github.com/xiaof-github/spring-es-demo