J2EE上传文件工具类

package com.util;

import java.io.File;

import javax.servlet.http.HttpServletRequest;

import org.springframework.web.multipart.commons.CommonsMultipartFile;

public class UploadUtil {

   public static String upload(CommonsMultipartFile mFile,       HttpServletRequest request,String dirPath) throws Exception{         //得到上传文件名   String fileName = mFile.getOriginalFilename();   //以时间毫秒数重命名文件   fileName = System.currentTimeMillis() +       fileName.substring(fileName.lastIndexOf("."));   //得到文件真实路径   String path = request.getServletContext().getRealPath(dirPath+"/"+fileName);        //向指定路径写入上传二进制数据   mFile.transferTo(new File(path));   return fileName;  } }