"请教大家一个问题 本地下载了es，启动了，也插入了数据，springboot项目写了一个测试方法查

"import org.elasticsearch.client.RestClient; import org.elasticsearch.client.RestHighLevelClient; import org.elasticsearch.index.query.QueryBuilders; import org.elasticsearch.search.builder.SearchSourceBuilder; import org.elasticsearch.search.sort.SortOrder; import org.elasticsearch.search.builder.SearchSourceBuilder;

public class ElasticsearchExample {

public static void main(String[] args) throws Exception {
    // 建立连接
    RestHighLevelClient client = new RestHighLevelClient(
        RestClient.builder(
            new HttpHost(""localhost"", 9200, ""http"")
        )
    );
    
    // 查询数据
    SearchSourceBuilder sourceBuilder = new SearchSourceBuilder();
    sourceBuilder.query(QueryBuilders.matchQuery(""name"", ""John""));
    sourceBuilder.sort(""age"", SortOrder.DESC);
    sourceBuilder.from(0);
    sourceBuilder.size(10);
    
    SearchRequest searchRequest = new SearchRequest(""my-index"");
    searchRequest.source(sourceBuilder);
    
    SearchResponse searchResponse = client.search(searchRequest, RequestOptions.DEFAULT);
    SearchHits hits = searchResponse.getHits();
    
    for (SearchHit hit : hits.getHits()) {
        System.out.println(hit.getSourceAsString());
    }
    
    // 关闭连接
    client.close();
}

} 这个试一下。 此回答整理自钉群“Elasticsearch技术社区2群”"