我有一个问题,需要你的帮助 . 我正在运行itext 7.0.2 . java和我正在尝试将类型为PdfDocument的列表ArrayList合并为一个单独的pdf .
我尝试了以下方法:
ByteArrayOutputStream bosGes = new ByteArrayOutputStream();
PdfWriter writerGes = new PdfWriter(bosGes);
PdfDocument docGes = new PdfDocument(writerGes);
ArrayList<PdfDocument> pdfs = AListOfSomePreviousCreatedPdfDocuments;
for (int i=0; i < pdfs.size(); i++) {
PdfDocument d = pdfs.get(i);
PdfPage p = d.getFirstPage().copyTo(docGes);
docGes.addPage(p);
d.close();
}
导致此错误:
com.itextpdf.kernel.PdfException: Cannot copy indirect object from the document that is being written.
然后我尝试了以下内容:
ByteArrayOutputStream bosGes = new ByteArrayOutputStream();
PdfWriter writerGes = new PdfWriter(bosGes);
PdfDocument docGes = new PdfDocument(writerGes);
for (int i=0; i < pdfs.size(); i++) {
PdfDocument d = pdfs.get(i);
docGes.addPage(d.getFirstPage());
d.close();
}
com.itextpdf.kernel.PdfException: Page com.itextpdf.kernel.pdf.PdfPage@1d85315f cannot be added to document com.itextpdf.kernel.pdf.PdfDocument@32ae81bb, because it belongs to document com.itextpdf.kernel.pdf.PdfDocument@4b8d06af.
我需要做什么,将这个PdfDocuments(每个只有一页)合并到一个Pdf?
好的,我疯了 . 从一开始就解释它 .
我创建这样的pdf表单
ArrayList<PdfDocument> pdfs = new ArrayList<PdfDocument>();
while (rs.next()) {
URL fullPath = context.getResource("/formulare/kontrollbogen.pdf");
ByteArrayOutputStream bos = new ByteArrayOutputStream();
PdfWriter writer = new PdfWriter(bos);
PdfReader reader = new PdfReader(fullPath.getFile());
PdfDocument doc = new PdfDocument(reader, writer);
PdfAcroForm form = PdfAcroForm.getAcroForm(doc, true);
String firma = rs.getString("firma");
if (firma != null && !firma.equals("")) {
form.getField("firma").setValue(firma);
}
.
.
.
pdfs.add(doc);
}
然后我想在我的ArrayList中合并这个PdfDocuments,如下所示:
ByteArrayOutputStream bosGes = new ByteArrayOutputStream();
PdfWriter writerGes = new PdfWriter(bosGes);
PdfDocument resultDoc = new PdfDocument(writerGes);
for (int i=0; i < pdfs.size(); i++) {
PdfReader r = pdfs.get(i).getReader();
PdfDocument sourceDoc1 = new PdfDocument(r);
int n1 = sourceDoc1.getNumberOfPages();
for (int j = 1; j <= n1; j++) {
PdfPage page = sourceDoc1.getPage(j).copyTo(resultDoc);
resultDoc.addPage(page);
}
sourceDoc1.close();
}
resultDoc.close();
不行 . 结果是包含更多页面的pdf,但未填写表单 .
所以我尝试了RTFM并尝试了合并扁平化表格的Bruno示例,但结果始终是带有空表单的pdf .
任何人都可以帮助将我的ArrayList中的pdf格式(所有相同的形式)转换为单个pdf吗?
我试过布鲁诺的小费,但它不起作用 . 我做的是:
//Initialize PDF document with output intent
PdfDocument pdf = new PdfDocument(writerGes);
PdfMerger merger = new PdfMerger(pdf);
//Add pages from the first document
PdfDocument firstSourcePdf = pdfs.get(0);
merger.merge(firstSourcePdf, 1, firstSourcePdf.getNumberOfPages());
//Add pages from the second pdf document
PdfDocument secondSourcePdf = pdfs.get(1);
merger.merge(secondSourcePdf, 1, secondSourcePdf.getNumberOfPages());
firstSourcePdf.close();
secondSourcePdf.close();
pdf.close();
但它最终再次出现此错误:
com.itextpdf.kernel.PdfException:无法从正在写入的文档中复制间接对象 .
这可能是因为我的pdf是表单,我必须在合并时重置值吗?