Flex上传文件到action

/**
	 * 上传附件接口
	 * @throws Exception
	 */
	public void doUpload() throws Exception {
		HttpServletRequest request = ServletActionContext.getRequest();
		HttpServletResponse response = ServletActionContext.getResponse();
		response.setContentType("text/html;charset=UTF-8"); 
		
		if (request instanceof MultiPartRequestWrapper) {
			try {
				MultiPartRequestWrapper multiRequest = (MultiPartRequestWrapper)request;
				File[] files = multiRequest.getFiles("Filedata");
				String[] fileNames = multiRequest.getFileNames("Filedata");
				System.out.println(files);
				System.out.println(fileNames);
				
				if (Validator.isNotNull(files) && Validator.isNotNull(fileNames) && files.length == fileNames.length) {
					for (int i=0;i<files.length;i++) {
						File srcFile = files[i];
						String fileName = fileNames[i];
						
						File tmpAtt = new File(uploadPath,fileName);
						FileUtils.copyFile(srcFile,tmpAtt);
						
						Long tmpAttId = TmpAttMgr.getInstance().addTmpAtt(tmpAtt,fileName);
	                    AJAXUtils.sendHtmlMsg(response,"S|" + tmpAttId);
					}
				}
			} catch (Exception e) {
				e.printStackTrace();
				AJAXUtils.sendHtmlMsg(response,"F|上传失败");
			}
		} else {
			logger.error("上传失败,未接收到上传的文件信息");
			AJAXUtils.sendHtmlMsg(response,"F|上传失败,未接收到上传的文件信息");
		}
	}