fileupload上传中文文件名乱码问题

package com.wildcat.servlet;

import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.List;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.commons.fileupload.FileItem;
import org.apache.commons.fileupload.disk.DiskFileItemFactory;
import org.apache.commons.fileupload.servlet.ServletFileUpload;

public class UploadServlet extends HttpServlet {

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {

DiskFileItemFactory factory=new DiskFileItemFactory();
String path=request.getRealPath("/upload");
factory.setRepository(new File(path));
factory.setSizeThreshold(1024*1024);

ServletFileUpload upload=new ServletFileUpload(factory);
//      这里就是中文文件名处理的代码，其实只有一行，serheaderencoding就可以了
upload.setHeaderEncoding("utf-8");
try{
List <FileItem> list=(List <FileItem>)upload.parseRequest(request);

for(FileItem item:list){
String name=item.getFieldName();//调教的文本 域名
if (item.isFormField()){//如果上传的是文本域

String value=item.getString();//提交的内容

System.out.println(name+" : "+value);
request.setAttribute(name, value);

}else {//如果上传的是文件
String value=item.getName();
//下面是对特殊浏览器的处理
int start=value.lastIndexOf("\\");
String fileName=value.substring(start+1);
request.setAttribute(name, fileName);
//写入指定目录
item.write(new File(path,fileName));
/*
OutputStream os=new FileOutputStream(new File(path,fileName));
InputStream in=item.getInputStream();
byte [] buffer=new byte[400];
long sumL=item.getSize();
int length=0;
double sumR = 0;
while((length=in.read(buffer))!=-1){
sumR+=length;
//下面百分比可以显示进度
System.out.println(sumR/sumL);
os.write(buffer, 0, length);
}

in.close();
os.close();

*/
}
}

}catch(Exception e){
e.printStackTrace();
}

request.getRequestDispatcher("fileuploadResult.jsp").forward(request, response);

}

}