String header = null;
        final StringBuilder buf = new StringBuilder(1000);
        try (final BufferedReader reader = new BufferedReader(new InputStreamReader(form.requestFile.getInputStream(), Constants.UTF_8))) {
            header = ReaderUtil.readLine(reader);
            if (header == null) {

import org.lastaflute.web.ruts.multipart.MultipartFormFile;
import org.lastaflute.web.validation.Required;

public class UploadForm {

    @Required
    public MultipartFormFile requestFile;

    public static final String LABELS_esreq_request_file = "{labels.esreq_request_file}";

    /** The key of the message: Request File */
    public static final String LABELS_REQUEST_FILE = "{labels.requestFile}";

    /** The key of the message: Send */
    public static final String LABELS_esreq_button_upload = "{labels.esreq_button_upload}";

    /** The key of the message: No match */