在春季应用程序404错误

Question

以下是我的表格

<form action="/children/${childDetails.person.id}/uploadchildPhotograph" 
        method="POST"
        enctype="multipart/form-data">
    <input type="file" name="photograph" />
</form>

在控制器中我写下面的代码

@RequestMapping(value="/{id}/uploadchildPhotograph", method=RequestMethod.POST)
    public ResponseEntity<String> uploadPhotograph(@PathVariable("id") Long childId, @RequestParam("photograph") GMultipartFile childPhoto )
    {
        ICCUserDetails userDetails = null;
        try {
            userDetails = usersService.getUserDetailsFromContext();
        } catch (ICCUserNotLoggedInException e) {
            return new ResponseEntity<String>(HttpStatus.UNAUTHORIZED);
        }       
        if (ChildService.doesUserHaveAccessToChild(userDetails,childId)== true){
            byte[] incomingImageData = childPhoto.getBytes();
            ImagesService imageService = ImagesServiceFactory.getImagesService();
            Image incomingImage = ImagesServiceFactory.makeImage(incomingImageData);
            com.google.appengine.api.images.Transform transform = ImagesServiceFactory.makeResize(87, 119);
            Image storedImage = imageService.applyTransform(transform, incomingImage);
            byte[] storedImageData = storedImage.getImageData();
            Person child = Person.findPerson(childId);
            log.info("child Id is"+childId);
            if (child == null)
                return new ResponseEntity<String>(HttpStatus.NOT_FOUND);                
            Blob blob = new Blob(storedImageData);
            child.setPhotograph(blob);
            child.setImageType(childPhoto.getContentType());
            child.merge();
            return new ResponseEntity<String>(HttpStatus.OK);
        }else{    
            return new ResponseEntity<String>(HttpStatus.UNAUTHORIZED);
        }
    }

现在问题是这种方法有时会正常工作，有时它会发现错误404未找到＆＃34;。它无法调用控制器方法。我认为路径存在一些问题。