如何使用iText将Swing组件绘制为PDF文件？ [英] How do I paint Swing Components to a PDF file with iText?

问题描述

我想通过iText将我的Swing JComponent打印到pdf。

I would like to print my Swing JComponent via iText to pdf.

JComponent com = new JPanel();
com.add( new JLabel("hello") );

PdfWriter writer = PdfWriter.getInstance( document, new FileOutputStream( dFile ) );
document.open( );

PdfContentByte cb = writer.getDirectContent( );
PdfTemplate tp = cb.createTemplate( pageImageableWidth, pageImageableHeight );
Graphics2D g2d = tp.createGraphics( pageImageableWidth, pageImageableHeight, new DefaultFontMapper( ) );
g2d.translate( pf.getImageableX( ), pf.getImageableY( ) );
g2d.scale( 0.4d, 0.4d );
com.paint( g2d );
cb.addTemplate( tp, 25, 200 );
g2d.dispose( );

不幸的是，PDF文件中没有显示任何内容。
你知道如何解决这个问题吗？

Unfortunately nothing is shown in the PDF file. Do you know how to solve this problem?

推荐答案

我已经想出了添加addNotify和验证帮助。

I have figured it out adding addNotify and validate helps.

    com.addNotify( );
    com.validate( );

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