学习Lucene笔记一:创建索引

public class HelloLucene {

    /**
     * 建立索引
     * @param args
     */
    public void index(){
        IndexWriter  writer = null;  

        try {
            //1.创建Directory,
            // Directory directory = new RAMDirectory();//索引是建立在内存中的
            Directory directory =  FSDirectory.open(new File("D:/Lucene/index01"));//索引是建立在硬盘上

            //2.创建IndexWriter，用完之后要关闭,在finally关闭。
            IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_36,new StandardAnalyzer(Version.LUCENE_36));
            writer = new IndexWriter(directory,iwc);
            
            //3.创建Document对象
            Document document = null;
            File files = new File("D:/Lucene/example1");
            
            //4.为Document添加Field
            for(File file: files.listFiles()){
                document =  new Document();
                
                //添加内容到索引
                document.add(new Field("content",new FileReader(file)));
                //添加文件名到索引
                document.add(new Field("filename",file.getName(),Field.Store.YES,Field.Index.NOT_ANALYZED));
                //添加路径到索引
                document.add(new Field("path",file.getAbsolutePath(),Field.Store.YES,Field.Index.NOT_ANALYZED));

                //5.通过IndexWriter添加文档到索引
                writer.addDocument(document);
            }
        } catch (CorruptIndexException e) {
            e.printStackTrace();
        } catch (LockObtainFailedException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }finally{
            try {
                if(writer != null) writer.close();
            } catch (CorruptIndexException e) {
                e.printStackTrace();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }



    }
}

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