擅长:python、mysql、java
<p>我刚刚尝试了上面的解决方案,但在Python3中运行时遇到了一些麻烦。所以,我想分享我的修改。修改后的代码如下:</p>
<pre><code>from PyPDF2 import PdfFileWriter, PdfFileReader
import io
from reportlab.pdfgen import canvas
from reportlab.lib.pagesizes import letter
packet = io.BytesIO()
# create a new PDF with Reportlab
can = canvas.Canvas(packet, pagesize=letter)
can.drawString(100, 100, "Hello world")
can.save()
# move to the beginning of the StringIO buffer
packet.seek(0)
new_pdf = PdfFileReader(packet)
# read your existing PDF
existing_pdf = PdfFileReader(open("mypdf.pdf", "rb"))
output = PdfFileWriter()
# add the "watermark" (which is the new pdf) on the existing page
page = existing_pdf.getPage(0)
page2 = new_pdf.getPage(0)
page.mergePage(page2)
output.addPage(page)
# finally, write "output" to a real file
outputStream = open("newpdf.pdf", "wb")
output.write(outputStream)
outputStream.close()
</code></pre>
<p>现在page.mergePage抛出一个错误。结果是pypdf2中的一个移植错误。请参考此问题以获取解决方案:<a href="https://stackoverflow.com/questions/27974409/porting-to-python3-pypdf2-mergepage-gives-typeerror">Porting to Python3: PyPDF2 mergePage() gives TypeError</a></p>