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最新推荐文章于 2025-09-05 22:36:24 发布

原创最新推荐文章于 2025-09-05 22:36:24 发布 · 767 阅读

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（1）创建索引

package com.lucene.index;

import java.io.File;
import java.io.IOException;
import java.util.List;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Field.Index;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.index.CorruptIndexException;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.LockObtainFailedException;
import org.apache.lucene.store.SimpleFSDirectory;
import org.apache.lucene.util.Version;

import com.lucene.vo.ProductList;

public class CreateIndex {

   public void createIndex(List<ProductList> pList,String path){
       Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_31);
       IndexWriterConfig indexWriteConfig = new IndexWriterConfig(Version.LUCENE_31, analyzer);
       IndexWriter indexWriter = null ;
       try {
           Directory directory = new SimpleFSDirectory(new File(path));
           indexWriter = new IndexWriter(directory, indexWriteConfig);
           for (ProductList productList : pList) {
               Document document = new Document();
               Field id = new Field("id",productList.getId().toString(),Store.YES,Index.ANALYZED);
               Field productName = new Field("productName", productList.getProductName(), Store.YES, Index.ANALYZED);
               Field productPrice = new Field("productPrice", productList.getProductPrice().toString(), Store.YES, Index.NOT_ANALYZED);
               Field catalogName = new Field("catalogName", productList.getCatalogName(), Store.YES, Index.ANALYZED);
               document.add(id);
               document.add(productName);
               document.add(productPrice);
               document.add(catalogName);
               indexWriter.addDocument(document);
           }
           indexWriter.commit();
       } catch (CorruptIndexException e) {
           e.printStackTrace();
       } catch (LockObtainFailedException e) {
           e.printStackTrace();
       } catch (IOException e) {
           e.printStackTrace();
       }finally{
           try {
               indexWriter.close();
           } catch (CorruptIndexException e) {
               e.printStackTrace();
           } catch (IOException e) {
               e.printStackTrace();
           }
       }
   }
}

（2）读索引

package com.lucene.index;

import java.io.File;
import java.io.IOException;

import org.apache.lucene.analysis.Analyzer;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field.Store;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.ParseException;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.Query;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;

public class SearchIndex {
   public void search(String indexPath,String[] field,String quaryString){
       FSDirectory directory = null ;
       try {
           directory = FSDirectory.open(new File(indexPath));
           IndexReader reader = IndexReader.open(directory);
           IndexSearcher search = new IndexSearcher(reader);
           Analyzer analyzer = new StandardAnalyzer(Version.LUCENE_31);
           MultiFieldQueryParser queryParse = new MultiFieldQueryParser(Version.LUCENE_31, field, analyzer);
           Query query = queryParse.parse(quaryString);
           ScoreDoc[] scoreDocs = search.search(query, 1000).scoreDocs;
           System.out.println("找到的记录条数:"+scoreDocs.length);
           for (ScoreDoc scoreDoc : scoreDocs) {
               Document document = search.doc(scoreDoc.doc);
               System.out.println(document.get("id")+":"+document.get("productName")+":"+document.get("productPrice")+":"+document.get("catalogName"));
           }
       } catch (IOException e) {
           e.printStackTrace();
       } catch (ParseException e) {
           e.printStackTrace();
       }

   }

}