Elasticsearch Common Java API instances

1. Introduction of dependency

<dependency>            <groupId>org.springframework.data</groupId>            <artifactId> Spring-data-elasticsearch</artifactid>            <version>1.4.0.M1</version></dependency>

2: Create \ Add index

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3. Create an entity class

PackageTestWeb;ImportOrg.springframework.data.elasticsearch.annotations.Document, @Document (indexname= "Yananindex", type= "Yanantype")PublicClassYanan {PrivateIntIdPrivateString name;PrivateString gender;PublicIntGetId () {ReturnId }Publicvoid SetId (Int ID) {this.id = ID;} public String GetName () {return< Span style= "COLOR: #000000" > name; } public void SetName ( String name {this.name = name;} public String Getgender () {return gender; } public void Setgender ( String gender) {this.gender = gender;}}     

The preparation is done, and the test begins below.

4.queryforobject\queryforlist\ aggregate query \ Statistics number \ Determine index existence \ Delete Index of specified ID

PackageTestWeb;ImportJava.util.List;ImportOrg.elasticsearch.action.search.SearchResponse;ImportOrg.elasticsearch.client.transport.TransportClient;ImportOrg.elasticsearch.common.settings.ImmutableSettings;ImportOrg.elasticsearch.common.settings.Settings;Importorg.elasticsearch.common.transport.InetSocketTransportAddress;Importorg.elasticsearch.common.transport.TransportAddress;ImportOrg.elasticsearch.index.query.BoolQueryBuilder;ImportOrg.elasticsearch.index.query.QueryBuilders;ImportOrg.elasticsearch.search.aggregations.AggregationBuilders;ImportOrg.elasticsearch.search.aggregations.Aggregations;Importorg.elasticsearch.search.aggregations.bucket.terms.StringTerms;ImportOrg.elasticsearch.search.aggregations.bucket.terms.TermsBuilder;ImportOrg.elasticsearch.search.aggregations.bucket.terms.Terms.Bucket;ImportOrg.springframework.data.elasticsearch.core.ElasticsearchTemplate;ImportOrg.springframework.data.elasticsearch.core.ResultsExtractor;ImportOrg.springframework.data.elasticsearch.core.query.GetQuery;ImportOrg.springframework.data.elasticsearch.core.query.NativeSearchQueryBuilder;PublicClassTestES {StaticTransportclient transportclient;StaticElasticsearchtemplate elasticsearchtemplate;PublicStaticvoidMain (string[] args) {elasticsearchtemplate=getelasticsearchtemplate ("localhost", "Elasticsearch_bak", 9303);//queryForObject ();//Querying documents based on index ID//queryForList ();//Aggregationquery ();//Aggregate queries//Count ();//Indexexists (Yanan.class);Deletebyid (); }PrivateStaticvoidDeletebyid () {//Indexquerybuilder indexquery=new Indexquerybuilder (). Withid ("1"). Withobject (Yanan.class);//String Delete = Elasticsearchtemplate.delete ("Yananindex", "Yanantype", "10");//ID of the index String delete = Elasticsearchtemplate.delete (Yanan.Class, "10");//ID of the index System.out.println (delete);//ID of the deleted index}PrivateStaticvoid Indexexists (class<yanan>Clazz) {If(Elasticsearchtemplate.indexexists (Clazz)) {System.out.println ("true"); }Else{System.out.println (False); } }PrivateStaticvoidCount () {Nativesearchquerybuilder searchquery=NewNativesearchquerybuilder (); Boolquerybuilder bqb =Querybuilders.boolquery (); Bqb.must (Querybuilders.termquery ("Gender", "female")); Searchquery.withindices ("Yananindex"). Withquery (BQB);Long Count =Elasticsearchtemplate.count (Searchquery.build ()); System.out.println (count); }PrivateStaticvoidAggregationquery () {Termsbuilder Termsbuilder = aggregationbuilders.terms ("Malecount"). Field ("Name"). Size (10); Nativesearchquerybuilder searchquery=NewNativesearchquerybuilder (); Boolquerybuilder bqb =Querybuilders.boolquery (); Bqb.must (Querybuilders.termquery ("Gender", "male")); Searchquery.withindices ("Yananindex"). Withquery (BQB). Addaggregation (Termsbuilder); Aggregations aggregations = Elasticsearchtemplate.query (Searchquery.build (),New resultsextractor<aggregations>() {@OverridePublicAggregations Extract (SearchResponse response) {ReturnResponse.getaggregations (); } }); Stringterms modelterms = (stringterms) aggregations.asmap (). Get ("Malecount"); list<bucket> buckets =Modelterms.getbuckets ();Forint i=0;i<buckets.size (); i++) {System.out.println (Buckets.get (i). GetKey () + "\ T" +Buckets.get (i). Getdoccount ()); } }PrivateStaticvoidqueryForList () {Nativesearchquerybuilder searchQuery =NewNativesearchquerybuilder (); Boolquerybuilder bqb =Querybuilders.boolquery (); Bqb.must (Querybuilders.termquery ("Gender", "male")); Searchquery.withindices ("Yananindex"). Withquery (BQB); list<yanan> list = Elasticsearchtemplate.queryforlist (Searchquery.build (), Yanan.Class);Forint i=0;i<list.size (); i++) {Yanan Yanan =List.get (i); System.out.println (Yanan.getname () + "\ T" +yanan.getgender () + "\ T" +Yanan.getid ()); } }PrivateStaticvoidqueryForObject () {getquery query =NewGetquery (); Query.setid ("1");//The ID of the index Yanan Yanan = elasticsearchtemplate.queryforobject (query, Yanan.Class); System.out.println (Yanan.getgender ()); System.out.println (Yanan.getname ()); System.out.println (Yanan.getid ());//ID of the entity}Static Elasticsearchtemplate getelasticsearchtemplate (String ip,string clustername,int port) {//<a href= "http://blog.csdn.net/ty4315/article/details/52434296"target=" _blank ">@ reference article 1</a>,<a href="http://blog.csdn.net/ljc2008110/article/details/48630609"target=" _blank ">@ reference article 2</a> Settings setting = Immutablesettings.settingsbuilder (). Put (" Cluster.name ", CLUSTERNAME)// Specify the cluster name. Put ("Client.transport.sniff", true) // Start sniffing, the client to sniff the entire cluster state and add the IP addresses of other machines in the cluster to the client, The advantage of this is that you do not have to manually set up all the clusters in the cluster IP to the connection client, it will automatically help you to add, and automatically discover the new cluster machine.  build (); // Create client to create via setting, if not specified, the default linked cluster name is Elasticsearch The link uses the TCP protocol 9303 transportclient = new Transportclient ( setting); Transportaddress transportaddress = new Inetsockettransportaddress (IP, port); Transportclient.addtransportaddresses (transportaddress); Elasticsearchtemplate = new Elasticsearchtemplate ( Transportclient); return Elasticsearchtemplate;}}     

Elasticsearch Common Java API instances