06Lucene索引库的删除

//删除全部索引
  @Test
  public void deleteAllIndex() throws Exception {
    IndexWriter indexWriter = getIndexWriter();
    //删除全部索引
    indexWriter.deleteAll();
    //关闭indexwriter
    indexWriter.close();
  }

//根据查询条件删除索引
  @Test
  public void deleteIndexByQuery() throws Exception {
    IndexWriter indexWriter = getIndexWriter();
    //创建一个查询条件
    Query query = new TermQuery(new Term("filename", "apache"));
    //根据查询条件删除
    indexWriter.deleteDocuments(query);
    //关闭indexwriter
    indexWriter.close();
  }