Suppressed: org.elasticsearch.client.ResponseException: method [PUT]

根据提供的引用内容，可以得知该错误是由于使用了不被识别的参数导致的。而在引用中提供了解决方法，即使用正确的CreateIndexRequest参数来调用create方法。下面是一个演示如何使用CreateIndexRequest来创建索引的例子：

import org.elasticsearch.action.admin.indices.create.CreateIndexRequest;
import org.elasticsearch.action.admin.indices.create.CreateIndexResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.index.mapper.ObjectMapper;
import org.elasticsearch.index.mapper.ObjectMapper.Builder;
import org.elasticsearch.index.mapper.RootObjectMapper;

import java.io.IOException;

public class CreateIndexExample {

    public static void main(String[] args) throws IOException {

        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder(new HttpHost("localhost", 9200, "http")));

        CreateIndexRequest request = new CreateIndexRequest("books");
        request.settings(Settings.builder()
                .put("index.number_of_shards", 3)
                .put("index.number_of_replicas", 2)
        );

        String mapping = "{\n" +
                "  \"properties\": {\n" +
                "    \"title\": {\n" +
                "      \"type\": \"text\"\n" +
                "    },\n" +
                "    \"author\": {\n" +
                "      \"type\": \"text\"\n" +
                "    },\n" +
                "    \"price\": {\n" +
                "      \"type\": \"float\"\n" +
                "    }\n" +
                "  }\n" +
                "}";

        request.mapping(mapping, XContentType.JSON);

        CreateIndexResponse createIndexResponse = client.indices().create(request, RequestOptions.DEFAULT);

        boolean acknowledged = createIndexResponse.isAcknowledged();
        boolean shardsAcknowledged = createIndexResponse.isShardsAcknowledged();

        System.out.println("Acknowledged: " + acknowledged);
        System.out.println("Shards Acknowledged: " + shardsAcknowledged);

        client.close();
    }
}