使用 Aspose.PDF for .NET 和 Python

本文描述了如何使用 Aspose.PDF for .NET 与 Python 集成创建 PDF 的简短示例。

前提条件

要在 Python 中使用 Aspose.PDF for .NET，请使用以下 requirments.txt：

pip==21.3.1
pycparser==2.21
pythonnet==2.5.2
setuptools==60.1.0

此外，您还应该将 Aspose.PDF.dll 放入所需的文件夹中。

使用 Python 创建简单 PDF

为了工作，我们需要将 PythonNet 集成到我们的应用程序中并进行一些设置。

import clr

aspose_pdf = clr.AddReference("D:\\aspose-python-net\\Aspose.PDF.dll")

from System import TimeSpan

from Aspose.Pdf import Document, Color, License, BorderInfo, BorderSide, Rectangle, HorizontalAlignment
from Aspose.Pdf import Table, MarginInfo
from Aspose.Pdf.Text import TextFragment, Position, TextBuilder,FontRepository

生成简单文档

让我们制作一个包含经典文本 “Hello, world” 的简单 PDF。有关更详细的说明，请访问 此页面

class HelloWorld(object):
    def __init__(self,licence_path):
        self.dataDir = "C:\\Samples\\"
        if licence_path:
            self.licence_path = licence_path
            self.aspose_license = License()
            self.aspose_license.SetLicense(self.licence_path)

    def run_simple(self):

        # Create PDF document
        document = Document()
        # Add page
        page = document.Pages.Add()
        # Add text to new page
        textFragment = TextFragment("Hello,world!")
        textFragment.Position = Position(100, 600)

        textFragment.TextState.FontSize = 12
        textFragment.TextState.Font = FontRepository.FindFont("TimesNewRoman")
        textFragment.TextState.BackgroundColor = Color.Blue
        textFragment.TextState.ForegroundColor = Color.Yellow

        # Create TextBuilder object
        textBuilder = TextBuilder(page)

        # Append the text fragment to the PDF page
        textBuilder.AppendText(textFragment)

        # Save PDF document
        document.Save("HelloWorld_out.pdf")

使用 Python 创建复杂 PDF

下一个示例展示了如何创建包含图像和表格的复杂 PDF 文档。此示例基于 以下页面。

class HelloWorld(object):
    def __init__(self,licence_path):
        self.dataDir = "C:\\Samples\\"
        if licence_path:
            self.licence_path = licence_path
            self.aspose_license = License()
            self.aspose_license.SetLicense(self.licence_path)

    def run_simple(self):
    # ... skipped ...

    # Make a Complex Document
    def run_complex(self):

        # Create PDF document
        document = Document()
        # Add page
        page = document.Pages.Add()

        # Add image
        imageFileName = self.dataDir + "logo.png"
        page.AddImage(imageFileName, Rectangle(20, 730, 120, 830))

        # Add Header
        header = TextFragment("New ferry routes in Fall 2020")
        header.TextState.Font = FontRepository.FindFont("Arial")
        header.TextState.FontSize = 24
        header.HorizontalAlignment = HorizontalAlignment.Center
        header.Position = Position(130, 720)
        page.Paragraphs.Add(header)

        # Add description
        descriptionText = "Visitors must buy tickets online and tickets are limited to 5,000 per day. \
        Ferry service is operating at half capacity and on a reduced schedule. Expect lineups."
        description = TextFragment(descriptionText)
        description.TextState.Font = FontRepository.FindFont("Times New Roman")
        description.TextState.FontSize = 14
        description.HorizontalAlignment = HorizontalAlignment.Left
        page.Paragraphs.Add(description)

        # Add table
        table = Table()

        table.ColumnWidths = "200"
        table.Border = BorderInfo(BorderSide.Box, 1.0, Color.DarkSlateGray)
        table.DefaultCellBorder = BorderInfo(BorderSide.Box, 0.5, Color.Black)
        table.DefaultCellPadding = MarginInfo(4.5, 4.5, 4.5, 4.5)
        table.Margin.Bottom = 10
        table.DefaultCellTextState.Font =  FontRepository.FindFont("Helvetica")

        headerRow = table.Rows.Add()
        headerRow.Cells.Add("Departs City")
        headerRow.Cells.Add("Departs Island")

        i=0
        while(i<headerRow.Cells.Count):
            headerRow.Cells[i].BackgroundColor = Color.Gray
            headerRow.Cells[i].DefaultCellTextState.ForegroundColor = Color.WhiteSmoke
            i+=1

        time = TimeSpan(6, 0, 0)
        incTime = TimeSpan(0, 30, 0)

        i=0
        while (i<10):
            dataRow = table.Rows.Add()
            dataRow.Cells.Add(time.ToString("hh\:mm"))
            time=time.Add(incTime)
            dataRow.Cells.Add(time.ToString("hh\:mm"))
            i+=1

        page.Paragraphs.Add(table)

        # Save PDF document
        document.Save(self.dataDir + "Complex.pdf")

如何在 Windows 中运行 PDF 生成

此代码片段展示了如何在 Windows PC 上运行上述示例。我们假设 class HelloWorld 位于 example_get_started.py 文件中。 如果您运行 Aspose.PDF for .NET 的试用版，您应该将空字符串作为 license_path 传递。

import example_get_started

def main():

    example = example_get_started.HelloWorld("<license_path>")
    example.run_simple()
    example.run_complex()


if __name__ == '__main__':
    main()