如何使用BulkRequest将ArrayList发送到ElasticSearch？

import org.elasticsearch.action.bulk.BulkRequest;
import org.elasticsearch.action.bulk.BulkResponse;
import org.elasticsearch.action.index.IndexRequest;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestClient;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.xcontent.XContentType;

import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class ElasticSearchBulkRequestExample {
    public static void main(String[] args) {
        // 创建Elasticsearch High Level REST Client实例
        RestHighLevelClient client = new RestHighLevelClient(
                RestClient.builder("localhost:9200"));

        // 创建BulkRequest对象
        BulkRequest bulkRequest = new BulkRequest();

        // 创建ArrayList并添加数据
        List<String> dataList = new ArrayList<>();
        dataList.add("data1");
        dataList.add("data2");
        dataList.add("data3");

        // 遍历ArrayList，将每个元素转换为IndexRequest对象，并添加到BulkRequest中
        for (String data : dataList) {
            IndexRequest indexRequest = new IndexRequest("your_index_name")
                    .source(data, XContentType.JSON);
            bulkRequest.add(indexRequest);
        }

        // 设置刷新策略
        bulkRequest.setRefreshPolicy("wait_for");

        try {
            // 执行BulkRequest
            BulkResponse bulkResponse = client.bulk(bulkRequest, RequestOptions.DEFAULT);

            // 处理BulkResponse
            if (bulkResponse.hasFailures()) {
                // 处理错误
                System.out.println("批量操作失败：" + bulkResponse.buildFailureMessage());
            } else {
                // 批量操作成功
                System.out.println("批量操作成功");
            }
        } catch (IOException e) {
            e.printStackTrace();
        }

        // 关闭Elasticsearch High Level REST Client
        try {
            client.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}