使用Spring MVC将文件上载到服务器目录
我正在尝试从客户端计算机上传文件到服务器目录。 我使用以下代码:
FileUpload.jsp
在我的控制器中:
@RequestMapping("/upload.action") public String upload(@ModelAttribute("fileUpload") FileUpload fileUpload,HttpServletResponse response,Model model) { CommonsMultipartFile multipartFile = fileUpload.getFileData(); String orginalName = multipartFile.getOriginalFilename(); String filePath = "/my_uploads/"+orginalName; File destination = new File(filePath); String status ="success"; try { multipartFile.transferTo(destination); } catch (IllegalStateException e) { // TODO Auto-generated catch block e.printStackTrace(); status="failure"; } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); status="iofailure"; } model.addAttribute("status", status); return "home"; }
FileUpload.java:
{ private CommonsMultipartFile fileData; .... }
在String orginalName = multipartFile.getOriginalFilename();
行中抛出NullPointerException
String orginalName = multipartFile.getOriginalFilename();
..我做错了什么?
尝试在您的requesthandler中添加MultipartFile
作为参数。
@RequestMapping("/upload.action") public String upload(@RequestParam(value = "file") MultipartFile file, HttpServletResponse response,Model model) { //Controller logic... }
这将要求您在调度程序的配置中注册一个新bean。
@RequestMapping("/upload.action") public String upload(@RequestParam("fileData") MultipartFile file, HttpServletResponse response,Model model) { //Controller logic... }
您在请求处理程序方法的参数中应该具有相同的名称,无论您在FileUpload Pojo中为multipartFile(“fileData”)提供什么,它都应该在参数中
谢谢,