itext 图片旋转

 

使用iText生产PDF时，你可以使用setRotation(final float r)或者setRotationDegrees(final float deg)方法来实现图片的旋转效果。

public void setRotation(double r)设定，参数r为弧度，如果旋转角度ss为30度，则参数r= Math.PI / 6
public void setRotationDegrees(final float deg);//deg为旋转的度数

package org.ajava.example.itextpdf;

import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.Image;
import com.itextpdf.text.pdf.PdfWriter;
import java.io.FileOutputStream;
import java.io.IOException;

public class AjavaImageRotateDemo {
    public static void main(String[] args) {
        Document document = new Document();
        try {
            PdfWriter.getInstance(document,
                    new FileOutputStream("AjavaImageRotation.pdf"));
            document.open();


            String filename = "ajava/logo.gif";
            Image image = Image.getInstance(filename);
            image.setRotation(90f);
            document.add(image);

            String url = "http://ajava.org/template/eis_002_dzx/img/logo.gif";
            image = Image.getInstance(url);
            image.setRotationDegrees(90);//旋转90度
            document.add(image);
        } catch (DocumentException | IOException e) {
            e.printStackTrace();
        } finally {
            document.close();
        }
    }
}