java代碼：

import java.io.IOException;import org.apache.http.HttpHost; import org.elasticsearch.action.search.SearchRequest; import org.elasticsearch.action.search.SearchResponse; import org.elasticsearch.client.RestClient; import org.elasticsearch.client.RestHighLevelClient; import org.elasticsearch.search.SearchHit; import org.elasticsearch.search.SearchHits; import org.elasticsearch.search.builder.SearchSourceBuilder;public class App3 {public static void main(String[] args) throws IOException {RestHighLevelClient client = new RestHighLevelClient(RestClient.builder(new HttpHost("localhost", 9200, "http"))); /* Long start=System.currentTimeMillis();IndicesClient indicesClient=client.indices();DeleteIndexRequest deleteIndexRequest=new DeleteIndexRequest("person");DeleteIndexResponse delRes=indicesClient.deleteIndex(deleteIndexRequest);if(delRes.isAcknowledged()) {System.out.println("delete success");}else{System.out.println("delete failed");}System.out.println("耗時:"+(System.currentTimeMillis()-start)+" 毫秒");*/SearchRequest req=new SearchRequest("person");SearchSourceBuilder builder=new SearchSourceBuilder();builder.size(10);req.source(builder);SearchResponse res=client.search(req);SearchHits hits=res.getHits();SearchHit[] hitArr=hits.getHits();for(SearchHit hit:hitArr) {System.out.println(hit.getSourceAsString());}/**** Done ****/System.out.println("Done");}}

無用的import自動刪除快捷鍵

導入需要的包快捷鍵?shift+ctrl+o，自動導入包，當然也會清除掉多余的包。

?

轉載于:https://www.cnblogs.com/davidwang456/p/9915791.html

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