TestDocument_01_get.java

package es_01_document;

import com.kwan.shuyu.SearchApplication;
import lombok.extern.slf4j.Slf4j;
import org.elasticsearch.action.get.GetRequest;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.client.RequestOptions;
import org.elasticsearch.client.RestHighLevelClient;
import org.elasticsearch.common.Strings;
import org.elasticsearch.search.fetch.subphase.FetchSourceContext;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.context.SpringBootTest;
import org.springframework.test.context.junit4.SpringRunner;

import java.io.IOException;


/**
 * 同步获取结果
 *
 * @author : qinyingjie
 * @version : 2.2.0
 * @date : 2023/5/10 14:00
 */
@Slf4j
@SpringBootTest(classes = SearchApplication.class)
@RunWith(SpringRunner.class)
public class TestDocument_01_get {

    @Autowired
    RestHighLevelClient client;

    @Test
    public void testGet() throws IOException {
        //构建请求
        GetRequest getRequest = new GetRequest("test_post", "1");
        //添加可选参数
        String[] includes = new String[]{"id", "comment"};
        String[] excludes = Strings.EMPTY_ARRAY;
        FetchSourceContext fetchSourceContext = new FetchSourceContext(true, includes, excludes);
        getRequest.fetchSourceContext(fetchSourceContext);
        //同步查询
        GetResponse getResponse = client.get(getRequest, RequestOptions.DEFAULT);
        //获取结果
        if (getResponse.isExists()) {
            log.info(getResponse.getId());
            log.info(String.valueOf(getResponse.getVersion()));
            log.info(getResponse.getSourceAsString());//以string获取数据
            log.info(String.valueOf(getResponse.getSourceAsBytes()));////以Bytes获取数据
            log.info(String.valueOf(getResponse.getSourceAsMap()));//以Map获取数据
        } else {
            log.info("数据不存在");
        }
    }
}