Lucene初学 搜索结果一直为0 求大神帮忙看一下如何解决

package cn.news.test;



import java.io.File;

import java.io.StringReader;

import java.util.ArrayList;

import java.util.List;



import org.apache.lucene.analysis.Analyzer;

import org.apache.lucene.analysis.TokenStream;

import org.apache.lucene.analysis.tokenattributes.CharTermAttribute;

import org.apache.lucene.document.Document;

import org.apache.lucene.document.Field;

import org.apache.lucene.document.Field.Index;

import org.apache.lucene.document.Field.Store;

import org.apache.lucene.index.DirectoryReader;

import org.apache.lucene.index.IndexReader;

import org.apache.lucene.index.IndexWriter;

import org.apache.lucene.index.IndexWriterConfig;

import org.apache.lucene.queryparser.classic.MultiFieldQueryParser;

import org.apache.lucene.search.BooleanClause.Occur;

import org.apache.lucene.search.IndexSearcher;

import org.apache.lucene.search.Query;

import org.apache.lucene.search.ScoreDoc;

import org.apache.lucene.search.TopDocs;

import org.apache.lucene.store.Directory;

import org.apache.lucene.store.FSDirectory;

import org.apache.lucene.util.Version;

import org.junit.Test;

import org.wltea.analyzer.lucene.IKAnalyzer;



import cn.news.domain.News;



@SuppressWarnings("deprecation")

public class LuceneUtil {

	public static String INDEX_PATH = "E:\\News\\index";



	public static IKAnalyzer analyzer = new IKAnalyzer(true);



	public static synchronized boolean createIndex(LuceneData data)

			throws Exception {



		Directory index = FSDirectory.open(new File(INDEX_PATH));

		IndexWriterConfig config = new IndexWriterConfig(Version.LUCENE_43,

				analyzer);



		Document doc = getDocument(data);



		IndexWriter w = new IndexWriter(index, config);

		w.addDocument(doc);

		System.out.println("共有索引" + w.numDocs() + "个");



		w.commit();



		return true;

	}



	private static Document getDocument(LuceneData data) {

		Document doc = new Document();

		doc.add(new Field("id", data.getId(), Store.YES, Index.NOT_ANALYZED));

		doc.add(new Field("title", data.getTitle(), Store.YES, Index.ANALYZED));

		doc.add(new Field("introduction", data.getIntroduction(), Store.YES,

				Index.ANALYZED));

		doc.add(new Field("content", data.getContent(), Store.YES,

				Index.ANALYZED));

		return doc;

	}



        public void search(String str) throws Exception {

		String queryString = str;



		analyzer.setUseSmart(true);



		String[] fields = { "title", "introduction", "content" };

		Occur[] occurs = { Occur.SHOULD, Occur.SHOULD, Occur.SHOULD };



		Directory directory = FSDirectory.open(new File(INDEX_PATH));

		IndexReader reader = DirectoryReader.open(directory);



		IndexSearcher indexSearcher = new IndexSearcher(reader);

		Query query = MultiFieldQueryParser.parse(Version.LUCENE_43,

				queryString, fields, occurs, analyzer);



		TopDocs topDocs = indexSearcher.search(query, 10000);



		System.out.println("共有【" + topDocs.totalHits + "】条结果");



		for (ScoreDoc scoreDoc : topDocs.scoreDocs) {

			int id = scoreDoc.doc;

			Document doc = indexSearcher.doc(id);

			printDoc(doc);

		}

	}



	public void printDoc(Document doc) {

		System.out.println("id\t=\t" + doc.get("id"));

		System.out.println("title\t=\t" + doc.get("title"));

		System.out.println("introduction\t=\t" + doc.get("introduction"));

		System.out.println("content\t=\t" + doc.get("content"));

	}



	@Test

	public void test() throws Exception {

		LuceneData data = new LuceneData("1", "新闻标题 ", "新闻导语 ", "新闻内容");

		createIndex(data);

		search("新闻");

	}

}