lucene 遍历所有term

lucene 遍历所有term

        Directory indexDirectory = FSDirectory.open(new File("/home/ranger/index/1"));

 

        IndexReader indexReader = DirectoryReader.open(indexDirectory);

        Fields fields = MultiFields.getFields(indexReader );

        Iterator<String> fieldsIterator = fields.iterator();

        while(fieldsIterator.hasNext()){

            String field = fieldsIterator.next();

            Terms terms = fields.terms(field);

            TermsEnum termsEnums = terms.iterator(null);

            BytesRef byteRef = null;

            System.out.println("field : "+ field);

            while((byteRef = termsEnums.next()) != null) {

                String term = new String(byteRef.bytes, byteRef.offset, byteRef.length);

                System.out.println("term is : " + term);

            }

        }

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