ajaxFileUpload+springMvc上传文件

1.前台
<!--引入两个库-->
<script type="text/javascript" src="appoint/resource/js/jquery.min.js"></script>
<script type="text/javascript" src="appoint/resource/js/ajaxfileupload.js"></script>
<input type="file" style="padding:0px;"  id="idCardInfo"  accept="image/*">

//需上传文件
$.ajaxFileUpload({
url: "validCustomer", //用于文件上传的服务器端请求地址
    secureuri: false, //是否需要安全协议，一般设置为false
    fileElementId: 'idCardInfo', //文件上传域的ID
    dataType: 'text',
type:'post',
data:{"appntName":$("#appntName").val()},
    success:function()
    {}
});
2.后台

@RequestMapping(value="/validCustomer",
method{RequestMethod.POST,RequestMethod.GET})
	public String validCustomer(@RequestParam MultipartFile idCardInfo,
			HttpServletRequest request,HttpServletResponse response) throws IllegalStateException, IOException{
String filename = idCardInfo.getOriginalFilename();
//注意 idCardInfo 要和界面的 input file 的id 相同 
		String fileName = Utils.getFileName(filename);
		String fileType = Utils.getFileType(filename);
		filename = fileName + "_" + new SimpleDateFormat("yyyyMMddHHmmssSS").format(new Date()) + fileType;
		File targetFile = new File(loader.getProperty("pang.upload")+filename);
		if(!targetFile.exists()){
			targetFile.mkdirs();
		}
		ac.setIdCardInfo(loader.getProperty("pang.upload")+filename);
//保存图片
		idCardInfo.transferTo(targetFile);
}