{"id":192927,"date":"2020-11-16T10:22:37","date_gmt":"2020-11-16T02:22:37","guid":{"rendered":"http:\/\/4563.org\/?p=192927"},"modified":"2020-11-16T10:22:37","modified_gmt":"2020-11-16T02:22:37","slug":"reportlab-%e5%a6%82%e4%bd%95%e5%90%91%e5%b7%b2%e7%bb%8f%e5%ad%98%e5%9c%a8-pdf-%e4%b8%ad%e7%9a%84%e6%8c%87%e5%ae%9a%e4%bd%8d%e7%bd%ae%e6%8f%92%e5%85%a5%e4%b8%80%e4%b8%aa%e9%a5%bc%e7%8a%b6%e5%9b%be","status":"publish","type":"post","link":"http:\/\/4563.org\/?p=192927","title":{"rendered":"Reportlab \u5982\u4f55\u5411\u5df2\u7ecf\u5b58\u5728 pdf \u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u4e00\u4e2a\u997c\u72b6\u56fe"},"content":{"rendered":"
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Reportlab \u5982\u4f55\u5411\u5df2\u7ecf\u5b58\u5728 pdf \u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u4e00\u4e2a\u997c\u72b6\u56fe <\/h1>\n

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\u8cc7\u6df1\u5927\u4f6c : lanceadd <\/span> <\/i> 0<\/span> <\/div>\n
<\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n
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\u6211\u5c1d\u8bd5\u4f7f\u7528 PyPDF2 \u548c Reportlab \u5411\u4e00\u4e2a\u5df2\u7ecf\u5b58\u5728\u7684 pdf \u4e2d\u7684\u6307\u5b9a\u4f4d\u7f6e\u63d2\u5165\u4e00\u4e2a\u7531 reportlab \u751f\u6210\u7684\u997c\u72b6\u56fe\uff0c\u4f46\u662f\u6211\u770b\u7684\u65f6\u5019\u53ea\u770b\u5230\u4f7f\u7528 reportlab \u7684 canvas \u5411\u5176\u4e2d\u5199\u5165\u5b57\u7b26\u4e32\uff0c\u56fe\u7247\u5565\u7684\uff0c\u6ca1\u770b\u5230\u5199\u5165\u4e00\u4e2a pie \u5bf9\u8c61\uff0c\u662f\u8981\u5c06\u8fd9\u4e2a pie \u5bf9\u8c61\u8f6c\u6210\u56fe\u7247\u7136\u540e\u518d\u63d2\u5165\u5417,\u6211\u53c2\u8003\u7684\u662f\u8fd9\u4e2a\u4ee3\u7801,\u5148\u611f\u8c22\u5404\u4f4d\u5927\u4f6c\u7684\u6559\u80b2<\/p>\n

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(10, 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(\"original.pdf\", \"rb\")) output = PdfFileWriter() # add the \"watermark\" (which is the new pdf) on the existing page page = existing_pdf.getPage(0) page.mergePage(new_pdf.getPage(0)) output.addPage(page) # finally, write \"output\" to a real file outputStream = open(\"destination.pdf\", \"wb\") output.write(outputStream) outputStream.close() <\/code><\/pre>\n<\/p><\/div>\n
 \u5927\u4f6c\u6709\u8a71\u8aaa<\/b> (2<\/span>)        <\/div>\n
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  • \n
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     \u4e3b<\/span> \u8cc7\u6df1\u5927\u4f6c : lanceadd <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u6211\u4f1a\u4e86
    “`
    import io<\/p>\n
    from PyPDF2 import PdfFileReader, PdfFileWriter
    from reportlab.graphics import renderPDF
    from reportlab.graphics.charts.piecharts import Pie
    from reportlab.graphics.shapes import Drawing
    from reportlab.lib.pagesizes import A4
    from reportlab.pdfgen import canvas<\/p>\n
    packet = io.BytesIO()<\/p>\n
    can = canvas.Canvas(packet, pagesize=A4)<\/p>\n
    pie = Pie()
    pie.data = [20, 10, 5, 5, 5]
    pie.labels = [‘a’, ‘b’, ‘c’, ‘d’, ‘e’]
    pie.sideLabels = True<\/p>\n
    d = Drawing(100, 100)
    d.add(pie)
    renderPDF.draw(d, can, 20, 20)
    can.save()
    packet.seek(0)
    new_pdf = PdfFileReader(packet)<\/p>\n
    existing_pdf = PdfFileReader(open(‘example_06.pdf’, ‘rb’))
    output = PdfFileWriter()
    page = existing_pdf.getPage(0)
    page.mergePage(new_pdf.getPage(0))
    output.addPage(page)
    outputStream = open(‘result.pdf’, ‘wb’)
    output.write(outputStream)
    outputStream.close()<\/p>\n
    “`                                                            <\/p><\/div>\n<\/p><\/div>\n<\/li>\n
  • \n
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     \u8cc7\u6df1\u5927\u4f6c : renmu123 <\/span>  <\/div>\n
     <\/i>            <\/span> <\/div>\n<\/p><\/div>\n
                                                                 \u63d0\u793a\u4e00\u4e0b\uff0cpypdf2 \u5df2\u7ecf\u505c\u6b62\u7ef4\u62a4\u4e86\uff0c\u53ef\u4ee5\u8bd5\u8bd5 pypdf4 \uff08\u867d\u7136\u4e5f\u5feb\u4e86                                                            <\/div>\n<\/p><\/div>\n<\/li>\n
  • \n","protected":false},"excerpt":{"rendered":"
    Reportlab \u5982\u4f55\u5411\u5df2\u7ecf\u5b58\u5728…<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[],"tags":[],"_links":{"self":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192927"}],"collection":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=192927"}],"version-history":[{"count":0,"href":"http:\/\/4563.org\/index.php?rest_route=\/wp\/v2\/posts\/192927\/revisions"}],"wp:attachment":[{"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=192927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=192927"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/4563.org\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=192927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}