spring 文件上传

**
	 * 单文件上传
	 * 
	 * @param name
	 *            @RequestParam 取得name字段的值
	 * @param file
	 *            文件
	 * @return
	 * @throws IOException
	 */
	@RequestMapping(value = "/fileUpload", method = RequestMethod.POST)
	public String handleFormUpload(@RequestParam("name") String name,
			@RequestParam("file") MultipartFile file) throws IOException {

		System.out.println("name：" + name);
		System.out.println("上传文件：" + file.getOriginalFilename());
		if (!file.isEmpty()) {
			this.copyFile(file.getInputStream(), file.getOriginalFilename());

		}
		return "fileUpload/success";
	}

	/**
	 * 多文件上传
	 * 
	 * @param request
	 * @param name
	 * @return
	 * @throws Exception
	 */
	@RequestMapping(value = "/multipartFileUpload", method = RequestMethod.POST)
	public String upload2(MultipartHttpServletRequest request,
			@RequestParam("name") String name // 页面上的控件值
	) throws Exception {
		List<MultipartFile> files = request.getFiles("file");
		for (int i = 0; i < files.size(); i++) {
			if (!files.get(i).isEmpty()) {
				System.out
						.println("上传文件：" + files.get(i).getOriginalFilename());
				this.copyFile(files.get(i).getInputStream(), files.get(i)
						.getOriginalFilename());
			}
		}
		System.out.println("success");
		return "fileUpload/success";
	}

	/**
	 * 写文件到本地
	 * 
	 * @param in
	 * @param fileName
	 * @throws IOException
	 */
	private void copyFile(InputStream in, String fileName) throws IOException {
		FileOutputStream fs = new FileOutputStream("d:/upload/" + fileName);
		byte[] buffer = new byte[1024 * 1024];
		int bytesum = 0;
		int byteread = 0;
		while ((byteread = in.read(buffer)) != -1) {
			bytesum += byteread;
			fs.write(buffer, 0, byteread);
			fs.flush();
		}
		fs.close();
		in.close();
	}