未找到PDF标头签名，iText

Question

嗨，我试图读取一个PDF文件，这是由servlet上传。

这是密码

//out = byte array
out = readInItem(item);
fileToUpload = new ByteArrayInputStream(out.toByteArray());

Map<String, AcroFields.Item> pdfBoxNames = new HashMap<String, AcroFields.Item>();
PdfReader reader = new PdfReader(fileToUpload);
ByteArrayOutputStream os = new ByteArrayOutputStream();
PdfStamper stamper = new PdfStamper(reader, os);
AcroFields acroFields = stamper.getAcroFields();
pdfBoxNames = acroFields.getFields();

我的pdf是这样开始的%PDF-1.6

错误消息java.io.IOExcture：找不到PDF标头签名。

Answer 1

面对同样的例外！请确保您已经包含了为其设置的TableHeader和编写器PageEvent。我只是把它们加起来，这个异常就消失了！希望对你有帮助

PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream(filePath));
TableHeader includeHeader = new TableHeader();
writer.setPageEvent(includeHeader);