在Lucene获取学期频率

import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.Term;
import org.apache.lucene.index.TermFreqVector;
import org.apache.lucene.index.DocIdSet;
import org.apache.lucene.index.DocIdSetIterator;
import org.apache.lucene.util.OpenBitSet;

public class LuceneTermFreqCalculator {

    public static void main(String[] args) throws Exception {
        String indexPath = "path/to/your/index";
        int numTerms = 10;
        int numTermsToCheck = 5;
        int numCheckWords = 10;

        IndexReader reader = DirectoryReader.open(FSDirectory.open(new File(indexPath)));
        Analyzer analyzer = new StandardAnalyzer();
        TokenStream tokenStream = analyzer.tokenStream("contents", new StringReader(""));
        tokenStream.reset();

        int termsFound = 0;
        int termsToCheck = 0;
        int checkWords = 0;

        while (tokenStream.incrementToken()) {
            String term = tokenStream.getAttribute(TermAttribute.class).term();
            if (!term.isEmpty()) {
                termsFound++;
                if (termsToCheck < numTermsToCheck) {
                    termsToCheck++;
                    if (checkWords < numCheckWords) {
                        checkWords++;
                    }
                }
            }
        }

        tokenStream.close();
        reader.close();

        System.out.println("Number of terms found: " + termsFound);
        System.out.println("Number of terms to check: " + termsToCheck);
        System.out.println("Number of check words: " + checkWords);

        if (termsToCheck >= numTermsToCheck && checkWords >= numCheckWords) {
            System.out.println("All terms have been checked.");
        } else {
            System.out.println("Not all terms have been checked.");
        }
    }
}