[spring boot] PDF 출력 - iText7_02(Image)

이미지를byte[]로 만들어 PDF 문서에 추가합니다.

import java.io.File;
import java.io.FileInputStream;

import com.itextpdf.io.IOException;
import com.itextpdf.io.image.ImageData;
import com.itextpdf.io.image.ImageDataFactory;
import com.itextpdf.io.source.ByteArrayOutputStream;
import com.itextpdf.kernel.pdf.PdfDocument;
import com.itextpdf.kernel.pdf.PdfWriter;
import com.itextpdf.layout.Document;
import com.itextpdf.layout.element.Image;

public class Itext7_02 {
	public static void main(String[] args) throws IOException, Exception {

		File file = new File("iText_Image_Ex2.pdf");

		PdfWriter pdfWriter = new PdfWriter(file);
		PdfDocument pdfDocument = new PdfDocument(pdfWriter);

		Document doc = new Document(pdfDocument);

		File imgFile = new File("google.png");

		FileInputStream img = new FileInputStream(imgFile);
		ByteArrayOutputStream baos = new ByteArrayOutputStream();

		int i;
		byte[] data = new byte[1024];
		while ((i = img.read(data, 0, data.length)) != -1) {
			baos.write(data, 0, i);
		}
		baos.flush();
		img.close();

		ImageData imgData = ImageDataFactory.create(baos.toByteArray());
		Image pdfImg = new Image(imgData);

		doc.add(pdfImg);

		doc.close();
	}
}

출력파일 : iText_Image_Ex2.pdf