MultipartRequest上传后文件改名

File fileDir = new File(this.getServletContext().getRealPath("/upimg"));if (!fileDir.exists()) {fileDir.mkdirs();}int inmaxPostSize = 10 * 1024 * 1024;MultipartRequest multirequest = null;try {multirequest = new MultipartRequest(request, fileDir.getAbsolutePath(), inmaxPostSize, "utf-8"); // utf-8中文编码模式上传文件String name = multirequest.getParameter("name");// 获取普通信息String typeCode = multirequest.getParameter("typeCode");String info = multirequest.getParameter("info");String newImgPath = "";Enumeration<String> filedFileNames = multirequest.getFileNames();String filedName = null;if (null != filedFileNames && name != null&& !name.trim().equals("") && info != null&& !info.trim().equals("")) {while (filedFileNames.hasMoreElements()) {filedName = filedFileNames.nextElement();// 文件文本框的名称// 获取该文件框中上传的文件，即对应到上传到服务器中的文件File uploadFile = multirequest.getFile(filedName);if (null != uploadFile && uploadFile.length() > 0) {String imgPath = uploadFile.getName();//imgPath为原文件名int idx = imgPath.lastIndexOf(".");//文件后缀String extention= imgPath.substring(idx);java.util.Date dt = new java.util.Date(System.currentTimeMillis());SimpleDateFormat fmt = new SimpleDateFormat("yyyyMMddHHmmssSSS");String time = fmt.format(dt);//新的文件名(日期+后缀)newImgPath = time + extention;File f = new File(fileDir + "/" + newImgPath);uploadFile.renameTo(f);}}Products products = new Products();products.setpName(name);products.setInfo(info);products.setImgPath(newImgPath);products.setTypeCode(typeCode);products.setPubDate(new Date());productsDao.addProducts(products);。。。} else {。。。}} catch (Exception e) {e.printStackTrace();}