您可能希望它根據其的JavaDoc看PageCombinationSample.java確實幾乎你所需要的：

此示例演示如何多頁合併成單一的大頁(例如 兩張A4模塊到一個A3模塊)使用表單XObjects [PDF：1.6：4.9]。

表單XObjects是一種在多個頁面上多次顯示內容的便捷方式，如 模板。

中央代碼：

// 1. Opening the source PDF file...

File sourceFile = new File(filePath);

// 2. Instantiate the target PDF file!

File file = new File();

// 3. Source page combination into target file.

Document document = file.getDocument();

Pages pages = document.getPages();

int pageIndex = -1;

PrimitiveComposer composer = null;

Dimension2D targetPageSize = PageFormat.getSize(SizeEnum.A4);

for(Page sourcePage : sourceFile.getDocument().getPages())

{

pageIndex++;

int pageMod = pageIndex % 2;

if(pageMod == 0)

{

if(composer != null)

{composer.flush();}

// Add a page to the target document!

Page page = new Page(

document,

PageFormat.getSize(SizeEnum.A3, OrientationEnum.Landscape)

); // Instantiates the page inside the document context.

pages.add(page); // Puts the page in the pages collection.

// Create a composer for the target content stream!

composer = new PrimitiveComposer(page);

}

// Add the form to the target page!

composer.showXObject(

sourcePage.toXObject(document), // Converts the source page into a form inside the target document.

new Point2D.Double(targetPageSize.getWidth() * pageMod, 0),

targetPageSize,

XAlignmentEnum.Left,

YAlignmentEnum.Top,

0

);

}

composer.flush();

// 4. Serialize the PDF file!

serialize(file, "Page combination", "combining multiple pages into single bigger ones", "page combination");

// 5. Closing the PDF file...

sourceFile.close();

總結

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