Can I copy tokens from one PDF to another?

[daijun <16...@qq.com>]

Dears,
I just try to directly copy tokens from one pdf to another.  The program run with no error. But when I open the generated pdf, it shows error. 
Could anyone be kind help me?  Thank you. 


Code like:
PDDocument document2 = new PDDocument();  // target
PDPage newPage = new PDPage(); // new page in the target 
document2.addPage( newPage );



PDDocument document1 = PDDocument.load("c:\\a.pdf"); //source
PDDocumentCatalog catalog = document.getDocumentCatalog();
PDPage page = (PDPage) catalog.getAllPages().get(0);
PDFStreamParser parser = new PDFStreamParser(page.getContents());
parser.parse();
List tokens = parser.getTokens();

List newTokens = new ArrayList();
for(int j=0; j<tokens.size(); j++) {
	                Object token = tokens.get( j );
                        newTokens.add( token );
}	            



PDStream newContents = new PDStream(document2 );
ContentStreamWriter writer = new ContentStreamWriter( newContents.createOutputStream() );
writer.writeTokens( newTokens );
newContents.addCompression();

newPage.setContents(newContents);


document2.save("c:\\new.pdf");

Re: Can I copy tokens from one PDF to another?

[Maruan Sahyoun <sa...@fileaffairs.de>]

Hi,

you can take a look at org.apache.pdfbox.util.PDFMergerUtility how to copy content from one PDF to the other. Copying the content stream token by token missed a lot of information.

BR

Maruan Sahyoun

Am 16.07.2013 um 04:12 schrieb daijun <16...@qq.com>:

> Dears,
> I just try to directly copy tokens from one pdf to another.  The program run with no error. But when I open the generated pdf, it shows error. 
> Could anyone be kind help me?  Thank you. 
> 
> 
> Code like:
> PDDocument document2 = new PDDocument();  // target
> PDPage newPage = new PDPage(); // new page in the target 
> document2.addPage( newPage );
> 
> 
> 
> PDDocument document1 = PDDocument.load("c:\\a.pdf"); //source
> PDDocumentCatalog catalog = document.getDocumentCatalog();
> PDPage page = (PDPage) catalog.getAllPages().get(0);
> PDFStreamParser parser = new PDFStreamParser(page.getContents());
> parser.parse();
> List tokens = parser.getTokens();
> 
> List newTokens = new ArrayList();
> for(int j=0; j<tokens.size(); j++) {
> 	                Object token = tokens.get( j );
>                        newTokens.add( token );
> }	            
> 
> 
> 
> PDStream newContents = new PDStream(document2 );
> ContentStreamWriter writer = new ContentStreamWriter( newContents.createOutputStream() );
> writer.writeTokens( newTokens );
> newContents.addCompression();
> 
> newPage.setContents(newContents);
> 
> 
> document2.save("c:\\new.pdf");