我正在處理與 PDF 相關的專案，我想從現有的 PDF 創建一個 PDF。
一切都完成了，但是當我當時創建最終 PDF 時，這個例外被拋出在下面描述document.close();的方法的行。savePDF
- 從現有的 PDF 添加新的 PDF
PdfImportedPage。
這是我的代碼
僅當我們添加新頁面時應用程式才會崩潰
private void createAndAddPage(Bitmap bitmap) {
try {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream);
byte[] byteArray = stream.toByteArray();
Document document = new Document();
File file = getPdfFile();
FileOutputStream fileOutputStream = new FileOutputStream(file);
PdfWriter pdfWriter = PdfWriter.getInstance(document, fileOutputStream); // Change pdf's name.
document.open();
Image image = Image.getInstance(byteArray); // Change image's name and extension.
float scaler = ((document.getPageSize().getWidth() - document.leftMargin()
- document.rightMargin() - 0) / image.getWidth()) * 100; // 0 means you have no indentation. If you have any, change it.
image.scalePercent(scaler);
image.setAlignment(Image.ALIGN_CENTER);
document.add(image);
document.close();
PdfReader pdfReader = new PdfReader(file.getPath());
PdfImportedPage pdfImportedPage = pdfWriter.getImportedPage(pdfReader, 1);
pageAdjustmentAdapter.AddPage(new PageAjdustAdapter.PdfPage(pdfImportedPage, bitmap));
} catch (Exception e) {
e.printStackTrace();
}
}
保存最終 PDF 時的方法（此方法發生崩潰）
private void savePDF(PageAjdustAdapter pageAdjustment) {
mPDFpages = pageAdjustment.getUpdatedList();
try {
pdfWriter.setPageEvent(new RotateEvent());
document.open();
PdfContentByte pdfContentByte = pdfWriter.getDirectContent();
for (int i = 0; i < mPDFpages.size(); i ) {
pdfContentByte.addTemplate(mPDFpages.get(i).page, 0, 0);
document.newPage();
}
} catch (Exception e) {
Log.d(TAG, "run: -> " e.getMessage());
e.printStackTrace();
} finally {
if (document.isOpen()) document.close();
actionListener.onEnd("Success");
}
}
日志貓
ExceptionConverter: java.io.IOException: Stream Closed
at java.io.FileOutputStream.write(FileOutputStream.java:391)
at java.io.BufferedOutputStream.flushBuffer(BufferedOutputStream.java:82)
at java.io.BufferedOutputStream.write(BufferedOutputStream.java:121)
at java.io.FilterOutputStream.write(FilterOutputStream.java:103)
at com.itextpdf.text.pdf.OutputStreamCounter.write(OutputStreamCounter.java:104)
at com.itextpdf.text.pdf.PRStream.toPdf(PRStream.java:244)
at com.itextpdf.text.pdf.PdfIndirectObject.writeTo(PdfIndirectObject.java:157)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.write(PdfWriter.java:402)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:380)
at com.itextpdf.text.pdf.PdfWriter$PdfBody.add(PdfWriter.java:359)
at com.itextpdf.text.pdf.PdfWriter.addToBody(PdfWriter.java:854)
at com.itextpdf.text.pdf.PdfReaderInstance.writeAllVisited(PdfReaderInstance.java:160)
at com.itextpdf.text.pdf.PdfReaderInstance.writeAllPages(PdfReaderInstance.java:176)
at com.itextpdf.text.pdf.PdfWriter.addSharedObjectsToBody(PdfWriter.java:1368)
at com.itextpdf.text.pdf.PdfWriter.close(PdfWriter.java:1251)
at com.itextpdf.text.pdf.PdfDocument.close(PdfDocument.java:901)
at com.itextpdf.text.Document.close(Document.java:415)
at com.mobilix.docscanner.PageAdjustment$8.run(PageAdjustment.java:233)
at java.lang.Thread.run(Thread.java:923)
uj5u.com熱心網友回復：
在createAndAddPage您將頁面匯入錯誤時PdfWriter：
Document document = new Document();
File file = getPdfFile();
FileOutputStream fileOutputStream = new FileOutputStream(file);
PdfWriter pdfWriter = PdfWriter.getInstance(document, fileOutputStream); // Change pdf's name.
document.open();
[...]
document.close();
PdfReader pdfReader = new PdfReader(file.getPath());
PdfImportedPage pdfImportedPage = pdfWriter.getImportedPage(pdfReader, 1);
在這里，您將新頁面匯入PdfWriter用于創建相同的新頁面。相反，您必須將其匯入PdfWriter最終要使用的pdfImportedPage.
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