通过 Java SDK 从 PDF 获取页面批注

    package com.aspose.asposecloudpdfusecases.annotations;

    import java.io.File;
    import java.nio.file.Path;
    import com.aspose.asposecloudpdf.api.PdfApi;
    import com.aspose.asposecloudpdf.model.AnnotationsInfoResponse;
    import com.google.gson.Gson;
    import com.google.gson.GsonBuilder;

    public class AnnotationGetAll {
        public static void Extract() {
            String REMOTE_FOLDER    = "Your_Temp_Pdf_Cloud";
            String LOCAL_FOLDER     = "c:\\Samples";
            String PDF_DOCUMENT     = "sample.pdf";
            Integer PAGE_NUMBER     = 1;

            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()));

                AnnotationsInfoResponse response = pdfApi.getPageAnnotations(PDF_DOCUMENT, PAGE_NUMBER, null, REMOTE_FOLDER);
                if (response.getCode() != 200)
                    System.err.println("Error: unexpected error when extracting annotations! '" + response.getStatus() + "'");
                else {
                    Gson gson = new GsonBuilder().setPrettyPrinting().create();
                    String jsonPage = gson.toJson(response.getAnnotations().getList());
                    System.out.println("Successfully extracted annotations from document page !\n" + jsonPage + "\n");
                }
            }
            catch (Exception e) {
                e.printStackTrace();
            }
        }
    }