/*今天看了个搜索的小程序 总结如下
Lucene 执行搜索的步骤:
1...创建Derectory
2...创建IndexReader
3...根据IndexReader创建IndexSearcher
4...创建搜索的Query(查询字符串)
5...根据searcher搜索并且返回TopDocs对象
6...根据TopDocs获取ScoreDoc对象
7....根据searcher和ScoreDoc对象获取具体的Document对象
8...根据Document对象获取需要的值
9...关闭reader
*/
import java.io.File; import java.io.FileReader; import java.io.IOException; import org.apache.lucene.analysis.standard.StandardAnalyzer; import org.apache.lucene.document.Document; import org.apache.lucene.document.Field; import org.apache.lucene.index.CorruptIndexException; 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.store.IndexInput; import org.apache.lucene.store.IndexOutput; import org.apache.lucene.store.LockObtainFailedException; import org.apache.lucene.store.RAMDirectory; import org.apache.lucene.util.Version; public class HelloLucene { /** * @param args */ public static void index()//throws IOException { IndexWriter writer=null; try { // Directory directory=new RAMDirectory() ;//创建在内存中 //1.创建Directory Directory directory=FSDirectory.open(new File("g:/lucene/first1") );//创建在硬盘中 //2.创建IndexWriter IndexWriterConfig iwc=new IndexWriterConfig(Version.LUCENE_35, new StandardAnalyzer(Version.LUCENE_35)); writer=new IndexWriter(directory,iwc); //3.创建Document对象 Document doc=null; //4.为Document添加Field File f=new File("g:/lucene/testFiles"); for (File file:f.listFiles()) { doc=new Document(); doc.add(new Field("content",new FileReader(file))); doc.add(new Field("filename",file.getName(),Field.Store.YES,Field.Index.NOT_ANALYZED)); doc.add(new Field("filepath",file.getAbsolutePath(), Field.Store.YES, Field.Index.NOT_ANALYZED)); //通过IndexWriter添加文档到索引中 writer.addDocument(doc); System.out.println(file.getName()+" has Indexed!"); } } catch (CorruptIndexException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (LockObtainFailedException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } finally { try { writer.close();//关闭indextwriter } catch (CorruptIndexException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } } public static void searcher() { try { //1. Directory directory = FSDirectory.open(new File("g:/lucene/first1") ); //2. IndexReader reader=IndexReader.open(directory); //3. IndexSearcher searcher=new IndexSearcher(reader); //4. QueryParser parser=new QueryParser(Version.LUCENE_35,"content",new StandardAnalyzer(Version.LUCENE_35)); Query query=parser.parse("java"); //5. TopDocs tds=searcher.search(query, 20); //6. ScoreDoc [] sds=tds.scoreDocs; for (ScoreDoc sd:sds) { //7. Document d=searcher.doc(sd.doc); //8. System.out.println(d.get("filename")+"["+d.get("filepath")+"]"); } //9. reader.close(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (ParseException e) { // TODO Auto-generated catch block e.printStackTrace(); } } public static void main(String[] args) { // TODO Auto-generated method stub index(); searcher(); } }
*/
//不足 感觉自己看的太慢 得抓紧了