elasticsearch(三)：java操作es测试类，复制粘贴就可用

深藏阁楼爱情的钟 2021-12-10 15:55 237阅读 0赞

正常es安装好后肯定得测试一下连接是否正常，所以在此记录一个测试类；直接上代码

import org.apache.http.HttpHost;
    import org.elasticsearch.action.get.GetRequest;
    import org.elasticsearch.action.search.SearchRequest;
    import org.elasticsearch.action.search.SearchResponse;
    import org.elasticsearch.action.search.SearchType;
    import org.elasticsearch.client.RequestOptions;
    import org.elasticsearch.client.RestClient;
    import org.elasticsearch.client.RestHighLevelClient;
    import org.elasticsearch.index.query.QueryBuilders;
    import org.elasticsearch.search.SearchHit;
    import org.elasticsearch.search.SearchHits;
    import org.elasticsearch.search.builder.SearchSourceBuilder;
    import org.junit.Test;
    
    import java.io.IOException;
    
    public class TestEs {
    
        /**
         * 测试es连接
         * @throws IOException
         */
        @Test
        public void testClient() throws IOException {
            RestHighLevelClient client = new RestHighLevelClient(
                    RestClient.builder(
                            new HttpHost("localhost", 9200, "http")));
            GetRequest getRequest = new GetRequest(
                    "project_info",//index
                    "projectInfo", //type
                    "8");//参数id
    
    
            boolean exists = client.exists(getRequest, RequestOptions.DEFAULT);
            System.out.println(exists);
            client.close();
    
        }
    
        @Test
        public void testSearchQuery() throws IOException {
            RestHighLevelClient client = new RestHighLevelClient(
                    RestClient.builder(
                            new HttpHost("localhost", 9200, "http")
                    )
            );
            SearchRequest searchRequest = new SearchRequest();
            SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
            searchSourceBuilder.query(QueryBuilders.matchQuery("sharing_content", "成果"));
            searchRequest.indices("project_info");
            searchRequest.types("projectInfo");
            searchRequest.searchType(SearchType.QUERY_THEN_FETCH);
    
            SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
            SearchHits hits = searchResponse.getHits();
            SearchHit[] searchHits = hits.getHits();
    
            for (SearchHit hit : searchHits) {
                System.out.println(hit.getSourceAsString());
            }
    
    
    
        }
    }

就这么简单，有问题请留言探讨，其他博客有相关实战查询可用参考使用。