DropZone图片上传控件的使用

时间：2021-08-28 23:20:29

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

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