TIF 文件转换成PDF文件

package myApplication;import java.io.File;import java.io.FileNotFoundException;import java.io.FileOutputStream;import java.io.IOException;import com.itextpdf.text.Document;import com.itextpdf.text.DocumentException;import com.itextpdf.text.Image;import com.itextpdf.text.PageSize;import com.itextpdf.text.Rectangle;import com.itextpdf.text.pdf.PdfContentByte;import com.itextpdf.text.pdf.PdfWriter;import com.itextpdf.text.pdf.RandomAccessFileOrArray;import com.itextpdf.text.pdf.codec.TiffImage;public class TifsToPdf {// 将多个tif文件合并成一个pdf文件public void tifToPdf(String arr[], String sFilePdf) {//获取TIF文件路径String sNewfile = sFilePdf.substring(0, sFilePdf.lastIndexOf("\\"));System.out.println(sNewfile);File _toFile = new File(sNewfile);if (!_toFile.exists()) {// 如果pdf目录不存在新建目录_toFile.mkdirs();}// 创建一个文档对象Document doc = new Document(PageSize.LETTER, 0, 0, 0, 0);int pages = 0;int comps = 0;String sFileTif = "";try {// 定义输出位置并把文档对象装入输出对象中PdfWriter writer = PdfWriter.getInstance(doc, new FileOutputStream(sFilePdf));// 打开文档对象doc.open();for (int i = 0; i < arr.length; i++) {sFileTif = arr[i];PdfContentByte cb = writer.getDirectContent();RandomAccessFileOrArray ra = null;try {ra = new RandomAccessFileOrArray(sFileTif);comps = TiffImage.getNumberOfPages(ra);} catch (Throwable e) {System.out.println("Exception in " + sFileTif + " "+ e.getMessage());}// System.out.println("Processing: " + sFileTif);for (int c = 0; c < comps; ++c) {try {Image img = TiffImage.getTiffImage(ra, c + 1);if (img != null) {// System.out.println("page " + (c + 1));img.scalePercent(7200f / img.getDpiX(),7200f / img.getDpiY());doc.setPageSize(new Rectangle(img.getScaledWidth(),img.getScaledHeight()));img.setAbsolutePosition(0, 0);cb.addImage(img);doc.newPage();++pages;}} catch (Throwable e) {System.out.println("Exception " + sFileTif + " page "+ (c + 1) + " " + e.getMessage());}}ra.close();// 关闭}// 关闭文档对象，释放资源doc.close();} catch (FileNotFoundException e) {e.printStackTrace();} catch (DocumentException e) {e.printStackTrace();} catch (IOException e) {e.printStackTrace();}}}