Indexing和Searching时都需要Analysis
Indexing和Searching时都需要Analysis 一个是把document拆成token, 索引起来。比如在lucene里， IndexWriter writer = new IndexWriter(dir, analyzer, …); 另一个是把用户的输入拆成token,再跟索引匹配 QueryParser parser = new QueryParser(Version.xxx, "contents", analyzer");