Java实现图片转PDF

1.导入依赖

<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itextpdf</artifactId>
<version>5.5.13</version>
</dependency>

<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>4.2.1</version>
</dependency>

2.实现图片转PDF的工具类

package util;

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

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

public class PicToPdfUtil {
   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();
           }
       }
   }
}

3.测试

public static void main(String[] args) {String source = "D:/image/车辆颜色.png";String target = "D:/aaa/1.pdf";convert(source, target);
}