Creating indexes and searches

Package Cn.dyg.luence;import Org.apache.lucene.analysis.standard.standardanalyzer;import Org.apache.lucene.document.document;import Org.apache.lucene.document.field;import Org.apache.lucene.index.indexreader;import Org.apache.lucene.index.indexwriter;import Org.apache.lucene.index.indexwriterconfig;import Org.apache.lucene.queryparser.parseexception;import Org.apache.lucene.queryparser.queryparser;import Org.apache.lucene.search.indexsearcher;import Org.apache.lucene.search.query;import Org.apache.lucene.search.scoredoc;import Org.apache.lucene.search.TopDocs; Import Org.apache.lucene.store.directory;import Org.apache.lucene.store.fsdirectory;import Org.apache.lucene.util.version;import Org.slf4j.logger;import Org.slf4j.loggerfactory;import Java.io.File;import Java.io.filereader;import java.io.ioexception;/** * Created by Administrator on 2016/11/2.    */public class Indexutil {private static final Logger Logger = Loggerfactory.getlogger (Indexutil.class); private static Final String Indexpath = "E:\\javaweb\\luencerepository\\index";         Private Indexutil () {} public static Indexreader Getindexreader () {Logger.info ("This is the Indexreader ...");    return null;   } public static void Setindexwriter () {//1 created directory//directory directory = new ramdirectory ();   Index is built in memory directory directory = NULL;        Index is built on disk try {directory = Fsdirectory.open (new File (Indexpath));        } catch (IOException e) {e.printstacktrace (); }//2 Create IndexWriter indexwriterconfig indexwriterconfig = new Indexwriterconfig (version.lucene_35, New Stand        Ardanalyzer (version.lucene_35));        IndexWriter indexwriter = null;            try {indexwriter = new IndexWriter (directory, indexwriterconfig);            3 Creating a Document object documents = NULL;            4 Add filed file FileList = new file ("E:\\javaweb\\luencerepository\\example") for the document; for (File File:fiLelist.listfiles ()) {document = new document ();                Document.add (New Field ("Content", new FileReader (file));                Document.add (New Field ("name", File.getname (), Field.Store.YES, Field.Index.NOT_ANALYZED));                Document.add (New Field ("Path", File.getabsolutepath (), Field.Store.YES, Field.Index.NOT_ANALYZED));            5 adding documents to the index by IndexWriter indexwriter.adddocument (document);        }} catch (IOException e) {e.printstacktrace ();                } finally {if (IndexWriter! = null) {try {indexwriter.close ();                } catch (IOException e) {e.printstacktrace (); }}}} public static void Search () {//1 Create directory//directory directory = new RA   Mdirectory ();   Index is built in memory directory directory = NULL; Index is built on disk try {directory = Fsdirectory.open (new FilE (Indexpath));        } catch (IOException e) {e.printstacktrace ();        }//2 Create indexreader indexreader indexreader = null;            try {indexreader = indexreader.open (directory);            3 Create search Indexsearcher Indexsearcher = new Indexsearcher (Indexreader);                    4 Create a search for query queryparser queryparser = new Queryparser (version.lucene_35,            "Content", new StandardAnalyzer (version.lucene_35));            5 Create a query that indicates that the search domain is a document containing Java in content query query = queryparser.parse ("3350527960");            6 searches according to searcher and returns Topdocs int querylimit = 10;            Topdocs Topdocs = indexsearcher.search (query, querylimit);            7 according to Topdocs obtained scoredocs scoredoc[] Scoredocs = Topdocs.scoredocs;            int i = 0;     for (Scoredoc scoredoc:scoredocs) {//8 Gets the Document object based on searcher and Scoredoc           Document document = Indexsearcher.doc (Scoredoc.doc);            Logger.info (i + document.get ("path") + document.get ("name");        }} catch (IOException e) {e.printstacktrace ();        } catch (ParseException e) {e.printstacktrace ();                } finally {if (Indexreader! = null) {try {indexreader.close ();                } catch (IOException e) {e.printstacktrace (); }            }        }    }}

　　

Creating indexes and searches