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我想打印出一個帶有水印的tiff圖像。因此,首先我將tiff圖像轉換爲pdf並將水印添加到生成的pdf中。但水印不會出現在最終的pdf中。有沒有任何建議打印出帶有水印的tiff圖像。任何幫助將不勝感激。這是我的代碼。如何在java中使用itext 2.1.7爲TIFF圖像添加水印
public class TiffToPdf {
private static int TEXT_TILT_ANGLE = 25;
private static Color MEDIUM_GRAY = new Color(242,17,72);
private static int PRIMARY_FONT_SIZE = 50;
private static String tif = "C:/Sample.tif";
private static String pdf = "C:/Sample.pdf";
private static String watermarkpdf = "C:/Watermark.pdf"
public static void main(String[] args) throws Exception {
convert(tif, pdf);
File watermark = new File(watermarkpdf);
OutputStream outputStream = new FileOutputStream(watermark);
addWaterMark(pdf, outputStream, "This is Sample WaterMark");
}
public static File convert(String tif, String pdf) {
File pdfFile = null;
String imgeFilename = tif;
Document document = new Document();
try {
PdfWriter writer = PdfWriter.getInstance(
document,
new FileOutputStream(pdf));
writer.setStrictImageSequence(true);
Image image;
document.open();
RandomAccessFileOrArray ra = new RandomAccessFileOrArray(imgeFilename);
int pagesTif = TiffImage.getNumberOfPages(ra);
for (int i = 1; i <= pagesTif; i++) {
image = TiffImage.getTiffImage(ra, i);
image.scaleAbsolute(PageSize.A4.getWidth(), PageSize.A4.getHeight());
document.setMargins(0, 0, 0, 0);
document.newPage();
document.add(image);
}
pdfFile = new File(pdf);
document.close();
} catch (Exception ex) {
//do nothing
}
return pdfFile;
}
public static void addWaterMark(String pdfFile,OutputStream outputStream, String watermark) throws Exception{
PdfReader reader = new PdfReader(pdfFile);
int numPages = reader.getNumberOfPages();
// Create a stamper that will copy the document to the output
// stream.
PdfStamper stamp = new PdfStamper(reader, outputStream);
int page=1;
BaseFont baseFont =
BaseFont.createFont(BaseFont.HELVETICA_BOLDOBLIQUE,
BaseFont.WINANSI, BaseFont.EMBEDDED);
float width;
float height;
while (page <= numPages) {
PdfContentByte cb = stamp.getOverContent(page);
height = reader.getPageSizeWithRotation(page).getHeight()/2;
width = reader.getPageSizeWithRotation(page).getWidth()/2;
cb = stamp.getUnderContent(page);
cb.saveState();
cb.setColorFill(MEDIUM_GRAY);
// Primary Text
cb.beginText();
cb.setFontAndSize(baseFont, PRIMARY_FONT_SIZE);
cb.showTextAligned(Element.ALIGN_CENTER, watermark, width,
height, TEXT_TILT_ANGLE);
cb.endText();
cb.restoreState();
page++;
}
stamp.close();
}
}
您正在使用不再支持的iText版本。請停止使用[出於這個原因](http://stackoverflow.com/a/25698526/1622493)。無論您的客戶是誰,他都不會意識到您將過時的軟件引入其代碼庫的事實。 – 2015-02-09 07:25:00