Document document = new Document();
try
{
	PdfWriter writer = PdfWriter.getInstance(document, new FileOutputStream('AddImageExample.pdf'));
	document.open();
	document.add(new Paragraph('Image Example'));
	
	// 添加图片 
	Image image1 = Image.getInstance('temp.jpg');
	// 设置图片的位置
	image1.setAbsolutePosition(100f, 550f);
	// 设置图片缩放
	image1.scaleAbsolute(200, 200);
	// 添加到文档中
	document.add(image1);
	
	// 添加网络图片
	String imageUrl = 'http://www.onitroad.com/logo.png';
	Image image2 = Image.getInstance(new URL(imageUrl));
	document.add(image2);
	document.close();
	writer.close();
} catch (Exception e)
{
	e.printStackTrace();
}