Lucene 搜索，小程序

/*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