使用Python实现在PDF文档中生成并添加二维码

pip install Spire.PDF
pip install Spire.Barcode

from spire.barcode import *

def WriteAllBytes(fname: str, data):
    """将字节数据写入文件"""
    with open(fname, "wb") as fp:
        fp.write(data)

# 创建条码设置对象
barcodeSettings = BarcodeSettings()

# 设置条码类型为二维码
barcodeSettings.Type = BarCodeType.QRCode

# 设置二维码包含的数据
barcodeSettings.Data = "https://example.com/product/12345"

# 创建条码生成器
barCodeGenerator = BarCodeGenerator(barcodeSettings)

# 生成二维码图像
barcodeImage = barCodeGenerator.GenerateImage()

# 保存为 PNG 文件
WriteAllBytes("QRCode.png", barcodeImage)

from spire.pdf import *
from spire.barcode import BarcodeSettings, BarCodeType, BarCodeGenerator

def WriteAllBytes(fname: str, data):
    with open(fname, "wb") as fp:
        fp.write(data)

# 生成二维码
barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.QRCode
barcodeSettings.Data = "https://example.com/product/12345"
barcodeSettings.ShowText = False
barcodeSettings.ImageHeight = 230.0
barcodeSettings.ImageWidth = 230.0
barcodeSettings.LeftMargin = 1.0
barcodeSettings.TopMargin = 1.0
barcodeSettings.RightMargin = 1.0
barcodeSettings.BottomMargin = 1.0

barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeImage = barCodeGenerator.GenerateImage()
WriteAllBytes("temp_qrcode.png", barcodeImage)

# 创建 PDF 文档
doc = PdfDocument()
doc.PageSettings.Size = PdfPageSize.A4()
page = doc.Pages.Add()

# 加载二维码图像
qrcode = PdfImage.FromFile("temp_qrcode.png")

# 定义二维码的位置和尺寸矩形 - 固定在页面左侧位置
qrcode_width = float(qrcode.Width)
qrcode_height = float(qrcode.Height)
page_width = page.Size.Width
page_height = page.Size.Height

# 计算二维码位置：固定在距离左边界 100 点，距离顶部 150 点的位置
stampRect = RectangleF(
    PointF(100.0, 150.0),
    SizeF(qrcode_width, qrcode_height)
)

# 创建橡胶图章注释
loStamp = PdfRubberStampAnnotation(stampRect)

# 创建外观对象
loAppearance = PdfAppearance(loStamp)

# 创建模板并在其中绘制二维码
template = PdfTemplate(stampRect.Width, stampRect.Height)
template.Graphics.DrawImage(qrcode, 0.0, 0.0, float(qrcode.Width), float(qrcode.Height))

# 设置外观并添加到页面注释集合
loAppearance.Normal = template
loAppearance.MouseHover = template
loAppearance.Pressed = template
loStamp.Appearance = loAppearance
page.AnnotationsWidget.Add(loStamp)

# 添加说明文字 - 在二维码下方适当距离
font = PdfTrueTypeFont("微软雅黑", 12.0, PdfFontStyle.Regular, True)
brush = PdfBrushes.get_Black()
text_y_position = stampRect.Y + stampRect.Height + 20.0  # 二维码底部向下 20 点间距
page.Canvas.DrawString("扫描二维码获取产品详情", font, brush, stampRect.X, text_y_position)

# 保存文档
doc.SaveToFile("ProductWithQRCode.pdf")
doc.Close()

from spire.pdf.common import *
from spire.pdf import *
from spire.barcode import *

def WriteAllBytes(fname: str, data):
    with open(fname, "wb") as fp:
        fp.write(data)

# 生成二维码
barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.QRCode
barcodeSettings.Data = "https://example.com/contact"
barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeImage = barCodeGenerator.GenerateImage()
WriteAllBytes("contact_qr.png", barcodeImage)

# 创建 PDF 并直接绘制
doc = PdfDocument()
page = doc.Pages.Add()

# 加载图像
qrcode = PdfImage.FromFile("contact_qr.png")

# 直接在画布指定位置绘制图像
page.Canvas.DrawImage(qrcode, 50.0, 50.0, 120.0, 120.0)

# 添加标题
font = PdfFont(PdfFontFamily.Helvetica, 16.0, PdfFontStyle.Bold)
page.Canvas.DrawString("联系我们", font, PdfBrushes.get_Black(), 50.0, 180.0)

doc.SaveToFile("ContactCard.pdf")
doc.Close()

barcodeSettings = BarcodeSettings()
barcodeSettings.Type = BarCodeType.QRCode
barcodeSettings.Data = "Custom styled QR code"

# 设置前景色和背景色
barcodeSettings.ForeColor = Color.get_Black()
barcodeSettings.BackColor = Color.get_White()

# 设置图像宽度（影响分辨率）
barcodeSettings.ImageWidth = 300

# 设置边距
barcodeSettings.MarginTop = 10
barcodeSettings.MarginBottom = 10
barcodeSettings.MarginLeft = 10
barcodeSettings.MarginRight = 10

barCodeGenerator = BarCodeGenerator(barcodeSettings)
barcodeImage = barCodeGenerator.GenerateImage()

products = [
    {"id": "P001", "url": "https://example.com/p1"},
    {"id": "P002", "url": "https://example.com/p2"},
    {"id": "P003", "url": "https://example.com/p3"}
]

for product in products:
    # 生成二维码
    barcodeSettings.Data = product["url"]
    # ... 生成图像和 PDF
    doc.SaveToFile(f"Product_{product['id']}.pdf")

barcodeSettings.ImageWidth = 600  # 增加宽度提高分辨率
barcodeSettings.DPI = 300         # 设置 300 DPI 适合打印