tiff文件转pdf文件

import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfWriter;

import java.io.FileOutputStream;
import java.io.IOException;

public class Tifftopdf {

    /**
     * tiff文件转pdf文件
     * @param source tiff文件输入路径
     * @param target pdf文件输出路径
     */
    public static void convert(String source, String target) {
        Document document = new Document();
        //设置文档页边距
        document.setMargins(0,0,0,0);
        FileOutputStream fos = null;
        try {
            fos = new FileOutputStream(target);
            PdfWriter.getInstance(document, fos);
            //打开文档
            document.open();
            //获取图片的宽高
            Image image = Image.getInstance(source);
            float imageHeight=image.getScaledHeight();
            float imageWidth=image.getScaledWidth();
            //设置页面宽高与图片一致
            Rectangle rectangle = new Rectangle(imageWidth, imageHeight);
            document.setPageSize(rectangle);
            //图片居中
            image.setAlignment(Image.ALIGN_CENTER);
            //新建一页添加图片
            document.newPage();
            document.add(image);
        } catch (Exception ioe) {
            System.out.println(ioe.getMessage());
        } finally {
            //关闭文档
            document.close();
            try {
                fos.flush();
                fos.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
    public static void main(String[] args) {
        String source = "C:/ls_ftp/433003/1/2021/20210807/222.tiff";//输入文件路径
        String target = "C:/ls_ftp/433003/1/2021/20210807/222.pdf";//输出文件路径
        convert(source, target);
    }
}