如何使用java在Elasticsearch中按字段属性检索文档？

import org.elasticsearch.action.search.SearchRequest;
import org.elasticsearch.action.search.SearchResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.index.query.QueryBuilders;
import org.elasticsearch.index.query.QueryBuilder;
import org.elasticsearch.search.SearchHits;

public class ElasticsearchSearchExample {
    public static void main(String[] args) {
        // 创建Elasticsearch客户端连接
        RestHighLevelClient client = new RestHighLevelClient();

        try {
            // 创建搜索请求
            SearchRequest searchRequest = new SearchRequest("index_name");
            searchRequest.types("document_type");

            // 构建查询条件
            QueryBuilder queryBuilder = QueryBuilders.matchQuery("field_name", "search_keyword");

            // 设置查询条件
            searchRequest.source(queryBuilder);

            // 执行搜索请求
            SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);

            // 解析搜索结果
            SearchHits hits = searchResponse.getHits();
            for (SearchHit hit : hits) {
                // 处理每个搜索到的文档结果
                String documentId = hit.getId();
                // ...
            }
        } catch (IOException e) {
            e.printStackTrace();
        } finally {
            // 关闭Elasticsearch客户端连接
            try {
                client.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}