学习lucene建立检索和搜索过程中遇到的错误

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学习lucene建立检索和搜索过程中遇到的错误30

使用lucene4.6.0版本建立的索引和搜索，在创建索引后会产生如下索引文件
[img]

[/img]

但是在搜索时

ScoreDoc[] sds = tds.scoreDocs;

中的sds总为空。求大神帮忙解决！！！！！！！

代码如下：

package nhky.bs.lucene.test.hellolucene;

import java.io.File;
import java.io.FileReader;
import java.io.IOException;

import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.document.Document;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.FieldType;
import org.apache.lucene.document.StoredField;
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.ParseException;
import org.apache.lucene.queryparser.classic.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.store.Directory;
import org.apache.lucene.store.FSDirectory;
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.util.Version;

public class HelloLucene {

	/**
	 * 建立索引
	 */
	public void index() {

		IndexWriter writer = null;
		try {
			Directory directory = FSDirectory.open(new File("F:/lucene/index01"));
			IndexWriterConfig iwc = new IndexWriterConfig(Version.LUCENE_46,new StandardAnalyzer(Version.LUCENE_46));
			writer = new IndexWriter(directory, iwc);

			// 3,创建Document
			Document document = null;
			// 4,为Docuemnt添加Field
			File files = new File("F:/lucene/files");
			// 5,通过IndexWriter添加文档到索引中
			for (File file : files.listFiles()) {
				document = new Document();
				 document.add(new Field("content", new FileReader(file),new FieldType()));
				 document.add(new StoredField("fileName", file.getName()));
				 document.add(new StoredField("path", file.getAbsolutePath()));	 
				 writer.addDocument(document);
			}

		} catch (IOException e) {
			e.printStackTrace();
		} finally {
			if (writer != null) {
				try {
					writer.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}
	}

	/**
	 * 建立搜索
	 */
	public void searcher() {
		DirectoryReader reader = null;
		try {
			// 创建Directory （去哪里搜索，此目录跟建立索引的目录一致）
			Directory directory = FSDirectory.open(new File("F:/lucene/index01"));
			reader = DirectoryReader.open(directory);
			IndexSearcher searcher = new IndexSearcher(reader);		
			QueryParser parser = new QueryParser(Version.LUCENE_46, "fileName",new StandardAnalyzer(Version.LUCENE_46));
			Query query = parser.parse("document");

			//根据searcher搜索并且返回TopDocs
			TopDocs tds = searcher.search(query, 10);
			
			// 根据TopDocs获取ScoreDoc对象
			// 得到查询结果数组
			ScoreDoc[] sds = tds.scoreDocs;	
			for (ScoreDoc sd : sds) {
				// 根据searcher和scoreDoc对象获取具体的Document对象
				Document d = searcher.doc(sd.doc);
				// 根据Document获取需要的值
				System.out.println("搜索结果：");
				System.out.println(d.get("fileName") + "[" + d.get("path")
						+ "]");
			}
		} catch (IOException e) {
			e.printStackTrace();
		} catch (ParseException e) {
			e.printStackTrace();
		} finally {
			// 关闭reader
			if (reader != null) {
				try {
					reader.close();
				} catch (IOException e) {
					e.printStackTrace();
				}
			}
		}

	}
}

Lucene