前台代码：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title> New Document </title>
<meta name="Generator" content="EditPlus">
<meta name="Author" content="">
<meta name="Keywords" content="">
<meta name="Description" content="">
</head>
<script type="text/javascript" src="Dropzone/dropzone.min.js"></script>
<link rel="stylesheet" type="text/css" href="Dropzone/css/basic.css"><link>
<link rel="stylesheet" type="text/css" href="Dropzone/css/dropzone.css"><link> <script> Dropzone.options.dropzoneForm = {
//添加上传取消和删除预览图片的链接，默认不添加
addRemoveLinks: true,
init : function() {
this.on("success", function(file, res){});
//删除图片的事件，当上传的图片为空时，使上传按钮不可用状态
this.on("removedfile", function () {
if (this.getAcceptedFiles().length === 0) {
$("#dropzoneForm").attr("disabled", true);
}
});
}
}; </script> <body> <form action="<%= request.getContextPath()%>/vehicleBasic/upload.do" method="post" enctype="multipart/form-data" class="dropzone" id="dropzoneForm">
</form> </body>
</html>
后台代码：
@RequestMapping("upload")
@ResponseBody
public String upload(@RequestParam(value = "file", required = false) MultipartFile file,
HttpServletRequest request, HttpServletResponse response) throws IOException{
response.setHeader("Access-Control-Allow-Origin","*");
SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMddHHmmssSS");
String res = sdf.format(new Date());
// uploads文件夹位置
//String rootPath = request.getSession().getServletContext().getRealPath("vehFile");
String rootPath = "ehFile/";
// 原始名称
String originalFileName = file.getOriginalFilename();
// 新文件名
String newFileName = res + originalFileName.substring(originalFileName.lastIndexOf("."));
// 新文件
File newFile = new File(rootPath +File.separator + newFileName);
// 判断目标文件所在目录是否存在
if( !newFile.getParentFile().exists()) {
// 如果目标文件所在的目录不存在，则创建父目录
newFile.getParentFile().mkdirs();
}
System.out.println(newFile);
System.out.println(originalFileName);
// 将内存中的数据写入磁盘
file.transferTo(newFile);
// 完整的url
String fileUrl =rootPath + newFileName;
return fileUrl;
}
DropZone资源路径：
http://download.csdn.net/download/s0009527/10198590