无法实例化[org.jboss.resteasy.plugins.providers.multipart.MultipartFormDataInput]：指定的类是一个接口

Question

第一次带着重复感。我试图将文件上传到休息状态，我参考了本教程：http://www.mkyong.com/webservices/jax-rs/file-upload-example-in-resteasy/ 但是我收到了错误。 MultiPartFormDataInput似乎不被接受，因为它是一个接口。我错过了什么吗？ 感谢。

这是我的终点：

packer-provisioner-shell.exe        3940    TCP 127.0.0.1   10000   0.0.0.0 0       LISTENING
packer-builder-virtualbox-iso.exe   11284   TCP 127.0.0.1   10000   127.0.0.1   49568   ESTABLISHED
packer.exe              12180   TCP 127.0.0.1   49568   127.0.0.1   10000   ESTABLISHED
packer.exe              12180   TCP 127.0.0.1   49571   127.0.0.1   10000   SYN_SENT

这是我的表格：

@CrossOrigin(origins = "http://localhost:8000")
@RequestMapping(value="upload", method = RequestMethod.POST, consumes = "multipart/form-data")
public Response uploadFile(MultipartFormDataInput input) {

    String fileName = "";

    Map<String, List<InputPart>> uploadForm = input.getFormDataMap();
    List<InputPart> inputParts = uploadForm.get("file");

    for (InputPart inputPart : inputParts) {

     try {

        MultivaluedMap<String, String> header = inputPart.getHeaders();
        fileName = getFileName(header);

        //convert the uploaded file to inputstream
        InputStream inputStream = inputPart.getBody(InputStream.class,null);

        byte [] bytes = IOUtils.toByteArray(inputStream);

        //constructs upload file path
        fileName = UPLOADED_FILE_PATH + fileName;

        writeFile(bytes,fileName);

        System.out.println("Done");

      } catch (IOException e) {
        e.printStackTrace();
      }

    }

    return Response.status(200)
        .entity("UPLOAD is called, Uploaded file name : " + fileName).build();

}