Java Lucene从Document对象获取条款

Question

我了解如何从Term对象获取文档集，但是您可以通过另一种方法从Document对象获取术语/术语频率吗？

Answer 1

Yes, it is possible get terms from a document, but there are no easy APIs. IndexReader has aa method getTermFreqVector where you can retrieve terms in a document. You need to build a custom TermVectorMapper and pass it getTermFreqVector(). In the custom TVMapper, terms and their frequencies are collected in map() method. Once the getTermFreqVector() returns, terms can be retrieved from the custom TVMapper.