完整版见 https://jadyer.github.io/2013/08/19/lucene-advanced-search-sort/

package com.jadyer.lucene;

import java.io.File;
import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.NumericField;
import org.apache.lucene.index.IndexReader;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.index.IndexWriterConfig;
import org.apache.lucene.queryParser.QueryParser;
import org.apache.lucene.search.IndexSearcher;
import org.apache.lucene.search.ScoreDoc;
import org.apache.lucene.search.Sort;
import org.apache.lucene.search.SortField;
import org.apache.lucene.search.TopDocs;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.util.Version;

/**
 * 【Lucene3.6.2入门系列】第06节_高级搜索之排序
 * @create Aug 19, 2013 10:38:19 AM
 * @author 玄玉<http://blog.csdn.net/jadyer>
 */
public class AdvancedSearchBySort {
	private Directory directory;
	private IndexReader reader;
	
	public AdvancedSearchBySort(){
		/**文件大小*/
		int[] sizes = {90, 10, 20, 10, 60, 50};
		/**文件名*/
		String[] names = {"Michael.java", "Scofield.ini", "Tbag.txt", "Jack", "Jade", "Jadyer"};
		/**文件内容*/
		String[] contents = {"my java blog is http://blog.csdn.net/jadyer",
							 "my Java Website is http://www.jadyer.cn",
							 "my name is jadyer",
							 "I am a Java Developer",
							 "I am from Haerbin",
							 "I like java of Lucene"};
		/**文件日期*/
		Date[] dates = new Date[sizes.length];
		SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd HH:mm:ss");
		IndexWriter writer = null;
		Document doc = null;
		try {
			dates[0] = sdf.parse("20130407 15:25:30");
			dates[1] = sdf.parse("20130407 16:30:45");
			dates[2] = sdf.parse("20130213 11:15:25");
			dates[3] = sdf.parse("20130808 09:30:55");
			dates[4] = sdf.parse("20130526 13:54:22");
			dates[5] = sdf.parse("20130701 17:35:34");
			directory = FSDirectory.open(new File("myExample/01_index/"));
			writer = new IndexWriter(directory, new IndexWriterConfig(Version.LUCENE_36, new StandardAnalyzer(Version.LUCENE_36)));
			writer.deleteAll();
			for(int i=0; i<sizes.length; i++){
				doc = new Document();
				doc.add(new NumericField("size",Field.Store.YES, true).setIntValue(sizes[i]));
				doc.add(new Field("name", names[i], Field.Store.YES, Field.Index.ANALYZED_NO_NORMS));
				doc.add(new Field("content", contents[i], Field.Store.NO, Field.Index.ANALYZED));
				doc.add(new NumericField("date", Field.Store.YES, true).setLongValue(dates[i].getTime()));
				writer.addDocument(doc);
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if(null != writer){
				try {
					writer.close();
				} catch (IOException ce) {
					ce.printStackTrace();
				}
			}
		}
	}
	
	/**
	 * 获取IndexReader实例
	 */
	private IndexReader getIndexReader(){
		try {
			if(reader == null){
				reader = IndexReader.open(directory);
			}else{
				//if the index was changed since the provided reader was opened, open and return a new reader; else,return null
				//如果当前reader在打开期间index发生改变,则打开并返回一个新的IndexReader,否则返回null
				IndexReader ir = IndexReader.openIfChanged(reader);
				if(ir != null){
					reader.close(); //关闭原reader
					reader = ir;    //赋予新reader
				}
			}
			return reader;
		}catch(Exception e) {
			e.printStackTrace();
		}
		return null; //发生异常则返回null
	}
	
	
	/**
	 * 搜索排序
	 * @see 关于Sort参数的可输入规则,如下所示
	 * @see 1)Sort.INDEXORDER--使用文档编号从小到大的顺序进行排序
	 * @see 2)Sort.RELEVANCE---使用文档评分从大到小的顺序进行排序,也是默认的排序规则,等价于search(query, 10)
	 * @see 3)new Sort(new SortField("size", SortField.INT))-----------使用文件大小从小到大的顺序排序
	 * @see 4)new Sort(new SortField("date", SortField.LONG))----------使用文件日期从以前到现在的顺序排序
	 * @see 5)new Sort(new SortField("name", SortField.STRING))--------使用文件名从A到Z的顺序排序
	 * @see 6)new Sort(new SortField("name", SortField.STRING, true))--使用文件名从Z到A的顺序排序
	 * @see 7)new Sort(new SortField("size", SortField.INT), SortField.FIELD_SCORE)--先按照文件大小排序,再按照文档评分排序(可以指定多个排序规则)
	 * @see 注意:以上7个Sort再打印文档评分时都是NaN,只有search(query, 10)才会正确打印文档评分
	 * @param expr 搜索表达式
	 * @param sort 排序规则
	 */
	public void searchBySort(String expr, Sort sort){
		IndexSearcher searcher = new IndexSearcher(this.getIndexReader());
		QueryParser parser = new QueryParser(Version.LUCENE_36, "content", new StandardAnalyzer(Version.LUCENE_36));
		TopDocs tds = null;
		try {
			if(null == sort){
				tds = searcher.search(parser.parse(expr), 10);
			}else{
				tds = searcher.search(parser.parse(expr), 10, sort);
			}
			for(ScoreDoc sd : tds.scoreDocs){
				Document doc = searcher.doc(sd.doc);
				System.out.print("文档编号=" + sd.doc + "  文档权值=" + doc.getBoost() + "  文档评分=" + sd.score + "    ");
				System.out.println("size=" + doc.get("size") + "  date=" + new SimpleDateFormat("yyyyMMdd HH:mm:ss").format(new Date(Long.parseLong(doc.get("date")))) + "  name=" + doc.get("name"));
			}
		} catch (Exception e) {
			e.printStackTrace();
		} finally {
			if(searcher != null){
				try {
					searcher.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}
	
	
	/**
	 * 测试一下排序效果
	 */
	public static void main(String[] args) {
		AdvancedSearchBySort advancedSearch = new AdvancedSearchBySort();
//		//使用文档评分从大到小的顺序进行排序,也是默认的排序规则
//		advancedSearch.searchBySort("Java", null);
//		advancedSearch.searchBySort("Java", Sort.RELEVANCE);
//		//使用文档编号从小到大的顺序进行排序
//		advancedSearch.searchBySort("Java", Sort.INDEXORDER);
//		//使用文件大小从小到大的顺序排序
//		advancedSearch.searchBySort("Java", new Sort(new SortField("size", SortField.INT)));
//		//使用文件日期从以前到现在的顺序排序
//		advancedSearch.searchBySort("Java", new Sort(new SortField("date", SortField.LONG)));
//		//使用文件名从A到Z的顺序排序
//		advancedSearch.searchBySort("Java", new Sort(new SortField("name", SortField.STRING)));
//		//使用文件名从Z到A的顺序排序
//		advancedSearch.searchBySort("Java", new Sort(new SortField("name", SortField.STRING, true)));
		//先按照文件大小排序,再按照文档评分排序(可以指定多个排序规则)
		advancedSearch.searchBySort("Java", new Sort(new SortField("size", SortField.INT), SortField.FIELD_SCORE));
	}
}