我使用Lucene库进行搜索，当我更新我搜索的对象中的信息时，我需要重新索引这个对象。所以我这样做：

    IndexWriterConfig config = new IndexWriterConfig(OffersSearchEJB.VERSION, OffersSearchEJB.ANALYZER);
    config.setOpenMode(IndexWriterConfig.OpenMode.APPEND);
    config.setRAMBufferSizeMB(64);
    config.setMaxBufferedDocs(2000);

    IndexWriter indexWriter;
    try {
        indexWriter = new IndexWriter(OffersSearchEJB.DIRECTORY, config);
        Document doc = new Document();
        IntField idField = new IntField("id", 0, Field.Store.YES);
        TextField shortTitleField = new TextField("shortTitle", "", Field.Store.NO);
        TextField titleField = new TextField("title", "", Field.Store.NO);
        TextField termsField = new TextField("terms", "", Field.Store.NO);
        TextField featuresField = new TextField("features", "", Field.Store.NO);
        TextField descriptionField = new TextField("description", "", Field.Store.NO);
        // deleting old index
        Term term = new Term("id", offer.getId().toString());
        indexWriter.deleteDocuments(term);
        // storing new index
        OffersSearchEJB.indexOffer(offer, indexWriter, doc, idField, shortTitleField, titleField, termsField, featuresField, descriptionField);
        indexWriter.commit();
        indexWriter.close();
    } catch (IOException ex) {
        Logger.getLogger(OfferMDB.class.getName()).log(Level.SEVERE, null, ex);
    }

换句话说，我只是添加新对象并删除旧对象。向索引中添加新对象效果很好，但这段代码并不是删除旧索引。我还尝试了indexWriter.updateDocument（term，doc）

我使用Lucene 4.7、JDK 1.6和Jboss 6.4