Lucene索引库的增删改

新增索引

  IndexWriterConfig config = new IndexWriterConfig(new IKAnalyzer());
        IndexWriter writer = new IndexWriter(directory,config);
        Document document = new Document();
        Field field = new TextField("zzz","444",Field.Store.YES);
        document.add(field);
        writer.addDocument(document);
        writer.close();

删除索引

   IndexWriterConfig config = new IndexWriterConfig(new IKAnalyzer());
        IndexWriter writer = new IndexWriter(directory,config);
        writer.deleteAll();//删除所有文档
        //删除所有zzz域
        writer.deleteDocuments(new Term("zzz"));
        //删除zzz域中头444的关键字的document
        writer.deleteDocuments(new Term("zzz","444"));

//修改 本质就是先删除后增加

 IndexWriterConfig config = new IndexWriterConfig(new IKAnalyzer());
        IndexWriter writer = new IndexWriter(directory,config);
        Document document = new Document();
        Field fff = new TextField("b","dddd",Field.Store.YES);
        document.add(fff);
        writer.updateDocument(new Term("zzz","444"),document);
        writer.close();

来源：CSDN

作者：骑着猪区见上帝

链接：https://blog.csdn.net/qq_40959641/article/details/103963431