lucene对xml检索问题
我对文件夹里的xml文件建立了索引，但是为什么就检索不到呢，请各位大侠指点指点：

建立索引的类：LuceneIndexLocalDisk

package Test;

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

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;

import org.apache.lucene.store.Directory; 
import org.apache.lucene.store.RAMDirectory;
import org.apache.lucene.document.Field;
import org.apache.lucene.document.Document;
import org.apache.lucene.index.IndexWriter;
import org.apache.lucene.analysis.standard.StandardAnalyzer;
import org.apache.lucene.analysis.*;
import org.w3c.dom.Element;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
import org.xml.sax.SAXException;


/*******************************************************************
 * 本代码完成本地指定目录的遍历和文件查找。对指定后缀的文件进行分析，利用Lucene建立
 * 索引，为后续检索使用做好准备。
 *******************************************************************/
public class LuceneIndexLocalDisk {

private static String Dest_Index_Path = "D:\\jy\\";
private static String Text_File_Path = "D:\\jy\\";


/*========================================================
* 主函数，指定索引目录和待分析的目录，生成Lucene索引
*========================================================*/
public static void main(String[] args) {

File indexpath = new File(Dest_Index_Path);
File localPath = new File(Text_File_Path);

try {
int nums = indexBuilder(indexpath,localPath);
System.out.println("Index Finished " + nums + " docs");
} catch (IOException e) {
e.printStackTrace();
}
}
/*========================================================
* 索引创建函数，生成IndexWriter创建索引，调用子目录索引函数，并优化
* 存储本地磁盘索引
*========================================================*/
public static int indexBuilder( File indexPath , File localPath ) 
throws IOException{
if(!localPath.exists() || !localPath.isDirectory() || !localPath.canRead()){
throw new IOException(localPath + "不存在或者不允许访问" );
}
System.out.println("目标路径完好");
IndexWriter FSWriter = new IndexWriter(indexPath,new StandardAnalyzer(),true);
FSWriter.setUseCompoundFile(true);

SubindexBuilder(FSWriter,localPath);
int num = FSWriter.docCount();
FSWriter.optimize();
FSWriter.close();
return num;
}

/*========================================================
* 判断当前文件名是否符合文件后缀要求
*========================================================*/
private static boolean IsValidType(String name){
if(name.endsWith(".xml"))
{
return true;
} else {
return false;
}
}
/*========================================================
* 处理各种不同类型文档,调用相应的参数，合并到本地磁盘索引当中
*========================================================*/
private static void fileindexBuilder(IndexWriter fswriter,File subfile)  
throws IOException{

if( subfile.isHidden() || !subfile.exists() || !subfile.canRead()){
return ;
}
  String strname = subfile.getName();
  int dotpos = strname.indexOf(".");
  HandleXml hnxml=new HandleXml();
  if(