Java上传单个文件

package com.yc.ycportal.util;
/**
* @author 彭建明
* mailto:[e-mail]
* 创建于日期   2007-6-18
*/
import java.io.File;
import java.util.Iterator;
import java.util.List;
import javax.servlet.http.HttpServletRequest;
import org.apache.commons.fileupload.DiskFileUpload;
import org.apache.commons.fileupload.FileItem;
import com.yc.ycportal.BaseConfig;
public class UploadFile{
 
private static final long serialVersionUID = 1L;
public String upLoad(HttpServletRequest request)throws Exception{
   String name = null;
   DiskFileUpload fu = new DiskFileUpload();
   fu.setSizeMax(4*1024*1024);
   fu.setSizeThreshold(4096);
   List filelist = fu.parseRequest(request);
   Iterator i = filelist.listIterator();
   FileItem fi = (FileItem)i.next();
   String fileName = fi.getName();
   name = fileName.substring(fileName.lastIndexOf('\\')+1, fileName.length());
   try {
    fi.write(new File(BaseConfig.getBasepath()+"/dic/importTxt/"+name));
   } catch (Exception e) {
    name = "失败";
   }
   return name;
}
}