Lunece4.2例子
package com.test.luncene;import java.io.File;import java.io.FileReader;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;import org.apache.lucene.document.Field.Store;import org.apache.lucene.document.FieldType;import org.apache.lucene.document.StringField;import org.apache.lucene.index.DirectoryReader;import org.apache.lucene.index.IndexReader;import org.apache.lucene.index.IndexWriter;import org.apache.lucene.index.IndexWriterConfig;import org.apache.lucene.queryparser.classic.ParseException;import org.apache.lucene.queryparser.classic.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;/** * @author linchers * */public class HelloLuncene {/** * 建立索引 */public void createIndex(){//创建IndexWriterIndexWriter iw = null;try {//创建Directory//Directory dir = new RAMDirectory(); //放到内存中Directory dir = FSDirectory.open(new File("D://luncene/index01")); //放到硬盘中//创建IndexWriterAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_42);IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_42,analyzer);iw = new IndexWriter(dir,iwc);//创建Document对象Document doc = null;//为Document对象添加FieldFile files = new File("D://luncene/simple");FieldType ft = new FieldType();//ft.setStored(true);ft.setIndexed(true);for(File file :files.listFiles()){doc = new Document();doc.add(new Field("content",new FileReader(file),ft));doc.add(new StringField("filename",file.getName(),Store.YES));doc.add(new StringField("path",file.getAbsolutePath(),Store.YES));System.out.println("filename = "+file.getName() + " | path =" + file.getAbsolutePath());iw.addDocument(doc);}//通过IndexWriter添加文档到索引中} catch (IOException e) {e.printStackTrace();}finally{try {iw.close();} catch (IOException e) {e.printStackTrace();}}}/** * 执行搜索 */public void searcher(){try {//创建DirectoryDirectory dir = FSDirectory.open(new File("D://luncene/index01"));//创建IndexReaderIndexReader ir = DirectoryReader.open(dir);//根据IndexReader 创建 IndexSearcherIndexSearcher is = new IndexSearcher(ir);//创建搜索的QueryAnalyzer analyzer = new StandardAnalyzer(Version.LUCENE_42);QueryParser qp = new QueryParser(Version.LUCENE_42,"content",analyzer);Query query = qp.parse("span");//根据searcher搜索 返回TopDocsTopDocs topDocs = is.search(query, 10);//根据TopDoc 获取 ScoreDocScoreDoc[] docs = topDocs.scoreDocs;Document document = null;//根据searcher 和 ScoreDoc 获取具体的Document 对象for(ScoreDoc doc :docs){//根据document对象获取需要的值document = is.doc(doc.doc);System.out.println(document.get("filename")+" ###### "+document.get("path"));}//关闭readerir.close();} catch (IOException e) {e.printStackTrace();} catch (ParseException e) {e.printStackTrace();}}}
?测试类
import junit.framework.TestCase;/** * @author linchers * */public class HelloLunceneTest extends TestCase {@Testpublic void testCreateIdex() {HelloLuncene hl = new HelloLuncene();hl.createIndex();}@Testpublic void testSearcher(){HelloLuncene hl = new HelloLuncene();hl.searcher();}}?