java实现图片jpg批量转换成pdf

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/py245164372/article/details/79735835

java实现图片jpg批量转换成pdf

package jpgTopdf;

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import javax.imageio.ImageIO;
import com.itextpdf.text.Document;
import com.itextpdf.text.Image;
import com.itextpdf.text.Rectangle;
import com.itextpdf.text.pdf.PdfWriter;


public class JpgToPDF {
public static void main(String[] args){
ArrayList<String> imagesListNameList=new ArrayList<String>();
//JpgToPDF.JpgToPDF("D:/jdp", "D:/pdf");单独转换一张图片
JpgToPDF.getAllFileName("D:/jpg", imagesListNameList);
String errorPath=null;
//批量转换图片
for(String name:imagesListNameList){

try {

                                //所用的包是itextpdf5.4.3.jar

//图片文件的路径：D:/jpg/
//存放pdf文件的路径：D:/pdf/
JpgToPDF.imageToPDF("D:/jpg/"+name,"D:/pdf/"+name.substring(0,name.lastIndexOf(".jpg"))+"pdf");
} catch (Exception e) {
errorPath="D:/jpg"+name;
}
if(errorPath==null){
System.out.println("文件转换成功");
}else{
System.out.println(errorPath+"路径下的文件转换失败");
}
}
System.out.println("文件全部转换成功");
}
//获取文件里的所有图片名称
public static List getAllFileName(String path,ArrayList<String> fileName){
File file=new File(path);
File[] files=file.listFiles();
String[] names= file.list();
if(names!=null)
fileName.addAll(Arrays.asList(names));
List imageListNameList = new ArrayList();
for(File a:files){
if(a.isDirectory()){
imageListNameList.addAll(fileName);
}
}
return imageListNameList;
}
//jpg图片转换成pdf
public static void imageToPDF(String imagePath,String pdfPath) throws Exception {
BufferedImage img = ImageIO.read(new File(imagePath));
FileOutputStream fos = new FileOutputStream(pdfPath);
Document doc = new Document(null, 0, 0, 0, 0);
doc.setPageSize(new Rectangle(img.getWidth(), img.getHeight()));
Image image = Image.getInstance(imagePath);
PdfWriter.getInstance(doc, fos);
doc.open();
doc.add(image);
doc.close();
}

}