以下程序使用 itext-library(版本 2.1.7)将 TIF 文件转换为 PDF 文件。
import com.lowagie.text.Document;
import com.lowagie.text.PageSize;
import com.lowagie.text.Image;
import com.lowagie.text.Rectangle;
import com.lowagie.text.pdf.PdfReader;
import com.lowagie.text.pdf.PdfWriter;
import com.lowagie.text.pdf.RandomAccessFileOrArray;
import com.lowagie.text.pdf.codec.TiffImage;
import java.io.File;
import java.io.FileOutputStream;
public class Tiff2Pdf {
public static File convert(String tifPath, String pdfPath) {
File pdfFile = null;
String imgeFilename = tifPath;
Document document = new Document();
try {
PdfWriter writer = PdfWriter.getInstance(
document,
new FileOutputStream(pdfPath));
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());
Rectangle pageSize = new Rectangle(633, 842);
document.setPageSize(pageSize);
document.newPage();
document.add(image);
}
pdfFile = new File(pdfPath);
document.close();
PdfReader read = new PdfReader(pdfPath);
} catch (Exception ex) {
//do nothing
}
return pdfFile;
}
}
但 PDF 文件未居中对齐。
转换后的 TIF 文件如何在 PDF 文件中居中对齐?