如何解决PDFBox错误：合并时出现文件结尾？

Question

我正在使用PDFbox合并5个PDF文件。这段代码突然工作正常，我开始遇到一个问题：行尾。

我尝试记录我的代码。我在加载文档时发现它开始引发异常

            final String assignmentReportPath = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+ResourceProperty.reportBundle.getString("SUFFIX_ASSIGNMENT_REPORT_PARAM");
            log.info("::OwnerConfirmationViewUtility::mergeFilesForEmail::assignmentReportPath: "+assignmentReportPath);
            final String appraiserWorkSheetPath = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+ResourceProperty.reportBundle.getString("SUFFIX_APPRAISER_WORKSHEET_PARAM");
            log.info("::OwnerConfirmationViewUtility::mergeFilesForEmail::appraiserWorkSheetPath: "+appraiserWorkSheetPath);
            final String appraiserLogBookPath = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+ResourceProperty.reportBundle.getString("SUFFIX_APPRAISER_LOG_BOOK_PARAM");
            log.info("::OwnerConfirmationViewUtility::mergeFilesForEmail::appraiserLogBookPath: "+appraiserLogBookPath);
            final String ownerConfirmReportPath = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+ResourceProperty.reportBundle.getString("SUFFIX_OWNER_CONFIRMATION_REPORT_PARAM");
            log.info("::OwnerConfirmationViewUtility::mergeFilesForEmail::ownerConfirmReportPath: "+ownerConfirmReportPath);
            final String originalReportPath = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+ResourceProperty.reportBundle.getString("SUFFIX_ORIGINAL_ASSIGNMENT");
            log.info("::OwnerConfirmationViewUtility::mergeFilesForEmail::originalReportPath: "+originalReportPath);

            final File assignmentReportPDFFile = new File(assignmentReportPath);
            final PDDocument assignmentReportPDF = PDDocument.load(assignmentReportPDFFile);

            final File appraiserWorkSheetPDFFile = new File(appraiserWorkSheetPath);
            final PDDocument appraiserWorkSheetPDF = PDDocument.load(appraiserWorkSheetPDFFile);

            final File appraiserLogBookPDFFile = new File(appraiserLogBookPath);
            final PDDocument appraiserLogBookPDF = PDDocument.load(appraiserLogBookPDFFile);

            final File confirmationReportPDFFile = new File(ownerConfirmReportPath);
            final PDDocument confirmationReportPDF = PDDocument.load(confirmationReportPDFFile);

            final File originalPDFFile = new File(originalReportPath);
            final PDDocument originalPDF = PDDocument.load(originalPDFFile);

            final PDFMergerUtility PDFmerger = new PDFMergerUtility();

            final String destinationFile = context.lookup(ResourceProperty.reportBundle.getString("FILE_CREATING_DIRECTORY_PATH")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+context.lookup(ResourceProperty.configBundle.getString("FOLDER_SEPARATOR")).toString()+ownerConfirmationViewPojo.getCanFileNumber()+".PDF";

            PDFmerger.setDestinationFileName(destinationFile);

            PDFmerger.addSource(assignmentReportPDFFile);
            PDFmerger.addSource(appraiserWorkSheetPDFFile);
            PDFmerger.addSource(appraiserLogBookPDFFile);
            PDFmerger.addSource(confirmationReportPDFFile);
            PDFmerger.addSource(originalPDFFile);

            PDFmerger.mergeDocuments(MemoryUsageSetting.setupMainMemoryOnly());

            final File finalFile = new File(destinationFile);