Aspose.Pdf使用教程：在PDF文件中添加图片

- 日理万妓 2023-09-26 23:21 175阅读 0赞

**[Aspose.PDF][]** 是一款高级PDF处理API，可以在跨平台应用程序中轻松生成，修改，转换，呈现，保护和打印文档。无需使用Adobe Acrobat。此外，API提供压缩选项，表创建和处理，图形和图像功能，广泛的超链接功能，图章和水印任务，扩展的安全控件和自定义字体处理。本文将为你介绍如何在 C++ 中将PDF转换为Doc 、Docx 。

[Aspose API][]支持流行文件格式处理，并允许将各类文档导出或转换为固定布局文件格式和最常用的图像/多媒体格式。

[Aspose.pdf 最新下载（qun：761297826）![icon-default.png?t=N3I4][icon-default.png_t_N3I4]https://www.evget.com/product/4118/download][Aspose.pdf _qun_761297826_icon-default.png_t_N3I4_icon-default.png_t_N3I4_https_www.evget.com_product_4118_download]

首先，你需要创建一个Document对象，并打开**PDF**文件。之后，找到需要添加图片的PDF页。之后将图片添加到该页的Resouces资源集中。

下面是示例代码：

**C\#**

>     //open document
>     Document pdfDocument = new Document("input.pdf");
>     
>     //set coordinates
>     int lowerLeftX = 100;
>     int lowerLeftY = 100;
>     int upperRightX = 200;
>     int upperRightY = 200;
>     
>     //get the page where image needs to be added
>     Page page = pdfDocument.Pages[1];
>     //load image into stream
>     FileStream imageStream = new FileStream("aspose-logo.jpg", FileMode.Open);
>     //add image to Images collection of Page Resources
>     page.Resources.Images.Add(imageStream);
>     //using GSave operator: this operator saves current graphics state
>     page.Contents.Add(new Operator.GSave());
>     //create Rectangle and Matrix objects
>     Aspose.Pdf.Rectangle rectangle = new Aspose.Pdf.Rectangle(lowerLeftX, lowerLeftY, upperRightX, upperRightY);
>     Aspose.Pdf.DOM.Matrix matrix = new Aspose.Pdf.DOM.Matrix(new double[] { rectangle.URX - rectangle.LLX, 0, 0, rectangle.URY - rectangle.LLY, rectangle.LLX, rectangle.LLY });
>     //using ConcatenateMatrix (concatenate matrix) operator: defines how image must be placed
>     page.Contents.Add(new Operator.ConcatenateMatrix(matrix));
>     XImage ximage = page.Resources.Images[page.Resources.Images.Count];
>     //using Do operator: this operator draws image
>     page.Contents.Add(new Operator.Do(ximage.Name));
>     //using GRestore operator: this operator restores graphics state
>     page.Contents.Add(new Operator.GRestore());
>     //save updated document
>     pdfDocument.Save("output.pdf");

**VB.NET**

>     'open document
>     Dim pdfDocument As New Document("input.pdf")
>     
>     'set coordinates
>     Dim lowerLeftX As Integer = 100
>     Dim lowerLeftY As Integer = 100
>     Dim upperRightX As Integer = 200
>     Dim upperRightY As Integer = 200
>     
>     'get the page where image needs to be added
>     Dim page As Page = pdfDocument.Pages(1)
>     'load image into stream
>     Dim imageStream As New FileStream("aspose-logo.jpg", FileMode.Open)
>     'add image to Images collection of Page Resources
>     page.Resources.Images.Add(imageStream)
>     'using GSave operator: this operator saves current graphics state
>     page.Contents.Add(New Operator.GSave())
>     'create Rectangle and Matrix objects
>     Dim rectangle As New Aspose.Pdf.Rectangle(lowerLeftX, lowerLeftY, upperRightX, upperRightY)
>     Dim matrix As New Aspose.Pdf.DOM.Matrix(New Double() { rectangle.URX - rectangle.LLX, 0, 0, rectangle.URY - rectangle.LLY, rectangle.LLX, rectangle.LLY })
>     'using ConcatenateMatrix (concatenate matrix) operator: defines how image must be placed
>     page.Contents.Add(New Operator.ConcatenateMatrix(matrix))
>     Dim ximage As XImage = page.Resources.Images(page.Resources.Images.Count)
>     'using Do operator: this operator draws image
>     page.Contents.Add(New Operator.Do(ximage.Name))
>     'using GRestore operator: this operator restores graphics state
>     page.Contents.Add(New Operator.GRestore())
>     'save updated document
>     pdfDocument.Save("output.pdf")

以上便是如何在PDF文件中添加图片，如您还有任何其他问题，欢迎加入我们~

[Aspose.PDF]: https://www.evget.com/product/4118
[Aspose API]: https://www.evget.com/supplier/150
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