Hibernate Search JPA + Lucene Simple Application Example

Let's say there's a scenario for this. A large number of articles are stored in the database, and we want to retrieve the relevant articles from the database by entering keywords.

1. Establish article Entity:

public class Article {private String ID;         Idprivate String title;       Title Private String content; Content private String ispublication; Publication status public String getId () {return ID;} public void SetId (String id) {this.id = ID;} Public String GetTitle () {return title;} public void Settitle (String title) {this.title = title;} Public String getcontent () {return content;} public void SetContent (String content) {this.content = content;} Public String getispublication () {return ispublication;} public void Setispublication (String ispublication) {this.ispublication = ispublication;}}

2. Build the index:

Import Javax.persistence.entitymanager;import Javax.persistence.persistencecontext;import Org.hibernate.search.jpa.fulltextentitymanager;import Org.hibernate.search.jpa.search;public class IndexArticle {@ persistencecontextprotected entitymanager entitymanager;public void Indexarticle () {//... The specific encoding is not finely written//list<article> articles = articleservice.findlist (null, NULL, NULL, first, count);//for (article article : articless) {//index (article);//}}public void index (article article) {//hibernate Search Jpafulltextentitymanager Fulltextentitymanager = Search.getfulltextentitymanager (Entitymanager); Fulltextentitymanager.index (articles);}}

3. Search Keywords:

Import Java.util.list;import Javax.persistence.entitymanager;import Javax.persistence.persistencecontext;import Org.apache.lucene.index.term;import Org.apache.lucene.queryparser.parseexception;import Org.apache.lucene.queryparser.queryparser;import Org.apache.lucene.search.booleanclause.occur;import Org.apache.lucene.search.booleanquery;import Org.apache.lucene.search.fuzzyquery;import Org.apache.lucene.search.query;import Org.apache.lucene.search.termquery;import org.apache.lucene.util.Version; Import Org.hibernate.search.jpa.fulltextentitymanager;import Org.hibernate.search.jpa.fulltextquery;import Org.hibernate.search.jpa.search;import Org.wltea.analyzer.lucene.ikanalyzer;import Com.dowik.dwshop.mall.entity.article;public class Searcharticle {@PersistenceContextprotected Entitymanager Entitymanager;public list<article> searchresult (String keyword) {try {//keyword to search keyword = Queryparser.escape ( keyword);//parser, Chinese word breaker queryparser titleparser = new Queryparser (version.lucene_35, "title", new Ikanalyzer ()); Titleparser.setdefaultoperator (Queryparser.and_operator); Query titlequery = titleparser.parse (keyword);//Fuzzy search title Fuzzyquery titlefuzzyquery = new Fuzzyquery (New term ("title", keyword), 0.5F);//Search by entry query contentquery = new Termquery (New term ("content", keyword);//Search by Entry Publish status query Ispublicationquery = new Termquery (New term ("Ispublication", "true"));//Full Text Search (Title Search + content Search) Booleanquery textquery = new Booleanquery (); Textquery.add (Titlequery, occur.should); Textquery.add (Titlefuzzyquery, Occur.SHOULD); Textquery.add (Contentquery, occur.should);//Publish Status + full-text search booleanquery query = new Booleanquery (); Query.add ( Ispublicationquery, Occur.must); Query.add (Textquery, occur.must);//hibernate Search Jpafulltextentitymanager Fulltextentitymanager = Search.getfulltextentitymanager (Entitymanager); FullTextQuery fulltextquery = fulltextentitymanager.createfulltextquery (query, Articles.class); list<article> resultlist = Fulltextquery.getresultlist (); return resultlist;} catch (ParseException E) {e.printstacktrace ();} return null;}}

The above three steps build a simple application example of Hibernate Search JPA + Lucene.

Hibernate Search JPA + Lucene Simple Application Example