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我正在使用弹簧表单上传文档。html表单...

<form method="post" action="/SafeSiteLive/formTask3.do" enctype="multipart/form-data">
    <table id="documentDetailsTable">
      <tr>
         <td>Document Type: </td>
         <td><select id="documentType" name="type"> </select></td>
      </tr>
      <tr>
         <td>
            Document Name:
         </td>
         <td>
             <input type="text" id="documentName" name="name"/>
         </td>
      </tr>
      <tr id="newFile">
         <td>
            Choose a file:
         </td>
         <td>
            <input type="file" name="file" />
         </td>
      </table>
      <input type="text" style="display: none;" name="taskInstanceId" id="taskInstanceId">

       <input id="uploadButton" value="Upload" type="submit"/>
       <input class="closeButton" id="closeNew" value="Close" type="button"/>
 </form>

这连接到我的控制器...

    @RequestMapping(value = "/formTask3.do", method = RequestMethod.POST)
public ModelAndView handleFormTaskUpload3(@RequestParam("name") String name,
        @RequestParam("type") String type,
        @RequestParam("file") MultipartFile file,
        @RequestParam("taskInstanceId") int taskInstanceId) {
    System.out.println("handleFormUploadTask.1 ");
    if (!file.isEmpty()) {
        try {
            byte[] bytes = file.getBytes();
            Document document = new Document();
            document.setBytes(bytes);
            String extension = "";

            int i = file.getOriginalFilename().lastIndexOf('.');
            if (i > 0) {
                extension = file.getOriginalFilename().substring(i + 1);
            }
            document.setExtension(extension);
            document.setName(name);

            document.setType(DocType.documentType.valueOf(type));

            Site site = SiteService.getSite(1);
            document.setSite(site);

            DocumentService.addDocument(document);

            DocumentTaskLink docTaskLink = new DocumentTaskLink();
            DocumentTaskKey docTaskKey = new DocumentTaskKey();
            TaskInstance taskInstance = TaskInstanceService.getTaskInstance(taskInstanceId);

            docTaskKey.setDocument(document);
            docTaskKey.setTaskInstance(taskInstance);
            docTaskLink.setKey(docTaskKey);

            DocumentService.saveNewDocumentTaskLink(docTaskLink);

            if (bytes != null) {
                System.out.println("handleFormUpload. File uploaded with bytes size = " + bytes.length);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }


        return new ModelAndView("I dont want a new Model And View");
    }
    return new ModelAndView("redirect:uploadFailure");
}

问题是这个表单返回一个重定向页面的modelAndView。

我希望这最终返回一个表示“成功”或“失败”的字符串,我可以通过对话框通知用户此成功来响应(无需刷新页面)。我什至不介意让这个控制器无效,大多数情况下我只是不想在上传文件时重新加载页面。

这可能吗?

当我使我的控制器无效时,页面仍然重定向到“/SafeSiteLive/formTask3.do”怎么办?

我可以使用这个表单上传控制器返回其他东西吗?

4

0 回答 0