将imageURI上传到服务器MultipartForm

我正在将图像从Javascript上传到我的服务器，我的javascript是使用Phonegap创建的应用程序的客户端部分，它的作用是拍摄画廊的图片，我希望它能在服务器上收到，但我想我有一个类型的问题，因为在客户端中，图像被编码为ImageURI，我的控制器用Java开发，Spring-MVC接收MultiPartFile，我不知道如何在MultiPartFile中转换ImageURI来接收它 . 我留下我的密码Phonegap：

function getPhoto(source) {
      // Retrieve image file location from specified source
      navigator.camera.getPicture(onPhotoURISuccess, onFail, { quality: 50,
        destinationType: destinationType.FILE_URI,
        sourceType: source });
    }
    function onPhotoURISuccess(imageURI) {
        alert("Imagen URI subida");
      // Uncomment to view the image file URI
      // console.log(imageURI);

      // Get image handle
      //
      var largeImage = document.getElementById('largeImage');
  alert("Imagen URI subida 2");
      // Unhide image elements
      //
     // largeImage.style.display = 'block';
  alert("Imagen URI subida 3");
      // Show the captured photo
      // The inline CSS rules are used to resize the image
      //

    //  largeImage.src = imageURI;
         alert("Imagen URI subida 4");
       subirImagen(imageURI);

    }




      function subirImagen(fileURL) {
                alert("SUBIR IMAGEN"+ fileURL);
                    var options = new FileUploadOptions();
                    options.fileKey = "imagen";
                    options.fileName = fileURL.substr(fileURL.lastIndexOf('/') + 1);

                    var ft = new FileTransfer();
                    alert("UPLOAD");
                    ft.upload(fileURL, encodeURI("http://localhost:8080/HelloSpringMVC/fileUpload"), uploadSuccess, uploadFail, options);
                }

Servidor Java Spring -MVC：@RequestMapping（value =“/ uploadFile”，method = RequestMethod.POST）public @ResponseBody String uploadFileHandler（@RequestParam（“file”）MultipartFile file）{System.out.println（“RECIBO ESTO”file ）; String name =“tablero.png”;的System.out.println（ “HOLA”）; if（！file.isEmpty（））{try {byte [] bytes = file.getBytes（）;

// Creating the directory to store file
            String rootPath = System.getProperty("catalina.home");
            File dir = new File(rootPath + File.separator + "tmpFiles");
                dir.mkdirs();

            // Create the file on server
            File serverFile = new File(dir.getAbsolutePath()+ File.separator + name);
            System.out.println("serverFile "+serverFile);
            BufferedOutputStream stream = new BufferedOutputStream(new FileOutputStream(serverFile));
            stream.write(bytes);
            stream.close();

            return "You successfully uploaded file=" + name;
        } catch (Exception e) {
            return "You failed to upload " + name + " => " + e.getMessage();
        }
    } else {
        return "You failed to upload " + name
                + " because the file was empty.";
    }
}