Phân tích PDF để trích xuất trường Form dưới dạng FDF trong Java SDK

    import java.io.File;
    import java.nio.file.Path;
    import java.nio.file.StandardCopyOption;

    import com.aspose.asposecloudpdf.api.PdfApi;

    public class ParseFormsFdf {
        public static void extract() {
            String REMOTE_FOLDER   = "Your_Temp_Pdf_Cloud";
	    String LOCAL_FOLDER    = "c:\\Samples";
	    String PDF_DOCUMENT    = "sample.pdf";
	    String FDF_OUTPUT_FILE = "output_sample.fdf";

            try {
                PdfApi pdfApi = new PdfApi(API_KEY, API_SECRET);

                // upload local PDF file to remote storage
                File file = new File(Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString());
                pdfApi.uploadFile(Path.of(REMOTE_FOLDER , PDF_DOCUMENT).toString(), file, null);
                System.out.println(String.format("File '%s' successfully uploaded!", Path.of(LOCAL_FOLDER, PDF_DOCUMENT).toString()));

                // perform action
                File f = pdfApi.getExportFieldsFromPdfToFdfInStorage(PDF_DOCUMENT, null, REMOTE_FOLDER);

                // save file            
                java.nio.file.Files.copy(Path.of(f.getPath()), Path.of(LOCAL_FOLDER, FDF_OUTPUT_FILE), StandardCopyOption.REPLACE_EXISTING);
                System.out.println(String.format("File '%s' successfully dowloaded!", Path.of(LOCAL_FOLDER, FDF_OUTPUT_FILE).toString()));                
                System.out.println("Successfully parsed PDF fields as FDF ! '" + FDF_OUTPUT_FILE + "'");
			
           } catch (Exception e) {
               e.printStackTrace();
           }
       }
    }