elasticsearch java api

Elasticsearch Java Client Operation---Search filtering, grouping highlighting, ElasticsearchjavaElasticsearch provides a lot of API, look at the name of almost can understand what meaningSOURCE Address: Source Download clickpublic void Search01 () {QueryBuilder query = querybuilders.querystring ("9");//Set the content of the search and the actual size searchrespo

The data format obtained by the Elasticsearch-java API is in JSON format, as shown belowIf you get a sum,avg value, the format will change.Jsonobject obj =Json.parseobject (esresult.getstring ()); //Figure AlistNewArraylist(); Try{List); if(hits! =NULL){ for(map json:hits) {mapNewHashmap(); Map _SC= (MAP) json.get ("_source"); Span.put ("T_devicei

Elasticsearch provides a lot of API, look at the name of almost can understand what meaningSOURCE Address: Source Download clickpublic void Search01 () {QueryBuilder query = querybuilders.querystring ("9");//Set the content of the search and the actual size searchresponse res = Client.preparesearch ("Test"). Setquery (query). Setfrom (0). SetSize (). Execute (). Actionget (); Searchhits SHS = Res.gethits ()

) {Integer ID= (Integer) hit.getsource (). Get ("id"); String name= (String) hit.getsource (). Get ("name"); String function= (String) hit.getsource (). Get ("Funciton"); List.add (NewEsbean (ID, name, function)); } } returnlist; }The third step is to write the entity class Esbean Public class esbean{private String reg_id; Private String organization; Omitting setter and getter methods; Public Esbean (String reg_id,string organization) {Super(); this. reg_id=reg_id; this. organiz

14 Sets of Java Premium architecture lessons, cache architecture, deep JVM virtual machines, full-text search Elasticsearch,dubbo distributed RESTful services, concurrent principle programming, SPRINGBOOT,SPRINGCLOUD,ROCKETMQ middleware, MySQL distributed cluster, service architecture, operation and maintenance Architecture Video Tutorial14 sets of fine course Introduction:1, 14 sets of fine is the latest f

Org.elasticsearch.search.searchhit;import Org.elasticsearch.search.searchhits;import Org.elasticsearch.search.sort.sortorder;import Org.elasticsearch.transport.client.PreBuiltTransportClient;/*** "description": ELK Java API interface, including query, delete, insert wait* "Steps": * @param* @return* @throws* @authorAllen * @date2017/7/4 9:47 */public class Elasticsearchutil {private static transportclie

Description privateStringdesc; privateList Also, because ES are generally used in JSON format when indexing, using Jackson to define a tool class that converts objects to JSON is also very simple, code: Java code publicclass ESUtils{ privatestaticObjectMapper Objectmapper=newobjectmapper (); publicstatic Stringtojson (Objecto) { try{ return Objectmapper.writevalueasstring (o); }catch (jsonprocessingexceptione) { e.printstacktrace (); } retur

In the afternoon try to use Elasticsearch Java client to do data retrieval work, test the batch update, the code is as follows: Public Static voidBulkupdategoods (listthrowsIOException, Interruptedexception, executionexception {client client=NULL; Try{Client=Transportclient.builder (). Build (). Addtransportaddress (NewInetsockettransportaddress (Inetaddress.getbyname ("Hadoop-slave4"), 9300)); } Catch(Exce

Write in front of the words: reading broken million, coded as God--------------------------------------------------------------------The simplest connection to the ES server in a Java client(Demo only for quick and easy use)1 PackageCom.es.util.elasticsearch;2 3 ImportLombok. Data;4 ImportOrg.apache.log4j.Logger;5 ImportOrg.elasticsearch.action.search.SearchRequestBuilder;6 ImportOrg.elasticsearch.action.search.SearchResponse;7 Importorg.elasticsearc

Package Cn.test;import Java.net.inetaddress;import Java.net.unknownhostexception;import Org.elasticsearch.client.transport.transportclient;import Org.elasticsearch.common.settings.settings;import Org.elasticsearch.common.transport.inetsockettransportaddress;public class Elktest {//private static final String Cluster_Name = "Cluster_Name"; public static final String cluster_name = "Elasticsearch"; Instance name//private static final String IP

1. Elasticsearch provides two built-in client 1.1 node clients for Java users: The node client joins the cluster with no data node (none), in other words, it does not store any data itself. But it knows exactly where the data is in the cluster and is able to forward requests directly to the corresponding nodes. Transport clients (Transport client): This lighter-weight transport client is able to send req

ES (Elasticsearch) suggester A total of four categories (term suggester, phrase suggester, completion suggester, context Suggester), Among them, completion suggester as the auto-completion function in the search box, especially used.This article will implement a simple example in the Java language to describe how to use completion suggester.The main function of the example is to create an auto-completion fu