lucene 实现分页

package com.kite.dispage;

import java.util.ArrayList;
import java.util.List;

import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriter.MaxFieldLength;
import org.apache.lucene.queryParser.MultiFieldQueryParser;
import org.apache.lucene.queryParser.QueryParser;
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.util.Version;
import org.junit.Test;

import com.kite.bean.Article;
import com.kite.luncene.utils.DocumentUtils;
import com.kite.luncene.utils.LunceneUtils;

/**
 * 分页
 * @author admin
 *
 */
public class DisPageTest
{
    @Test
    public void testCreateIndexBeath() throws Exception
    {
        IndexWriter indexWriter = new IndexWriter(LunceneUtils.directory, LunceneUtils.analyzer, MaxFieldLength.LIMITED);
        for(int i = 0; i < 1000; i++)
        {
            
            Article article = new Article();
            article.setId(1L + i);
            article.setTitle("luncenes是一个好难写的东西");
            article.setContent("百度，谷歌是很好的搜索引擎");
            //通过工具类转换成document
            Document document = DocumentUtils.articleToDocument(article);
            indexWriter.addDocument(document);
        }
        
        indexWriter.close();
    }
    
    /**
     * 
     * @param firstResult
     *    当前页的第一行在集合中的位置
     * @param maxResult
     *    每页显示的最大的行数
     * @throws Exception
     */
    public void testSearchIndexDispage(int firstResult,int maxResult) throws Exception
    {
        IndexSearcher indexSearcher = new IndexSearcher(LunceneUtils.directory);
        QueryParser queryParser = new MultiFieldQueryParser(Version.LUCENE_30, new String[]{"title","content"}, LunceneUtils.analyzer);
        Query query = queryParser.parse("luncenes");
        //查询的是起点位置到一页显示多少行
        TopDocs topDocs = indexSearcher.search(query,firstResult+maxResult);
        //返回
        int count = Math.min(topDocs.totalHits, firstResult+maxResult);
        ScoreDoc[] scoreDocs = topDocs.scoreDocs;
        List<Article> articleList = new ArrayList<Article>();
        for(int i=firstResult;i<count;i++){
            Document document =  indexSearcher.doc(scoreDocs[i].doc);
            Article article = DocumentUtils.documentToArticle(document);
            articleList.add(article);
        }
        
        for(Article article:articleList){
            System.out.println(article.getId());
            System.out.println(article.getTitle());
            System.out.println(article.getContent());
        }
    }
    /**
     * 分页测试
     */
    @Test
    public void testDisPage() throws Exception
    {
        this.testSearchIndexDispage(500,100);
    }
}