小工具之图片文件转PDF文件
需引入三个Jar包:
<dependency>
<groupId>com.itextpdf</groupId>
<artifactId>itext-asian</artifactId>
<version>5.2.0</version>
</dependency>
<dependency>
<groupId>com.lowagie</groupId>
<artifactId>itext</artifactId>
<version>2.1.7</version>
</dependency>
<dependency>
<groupId>org.freemarker</groupId>
<artifactId>freemarker</artifactId>
<version>2.3.23</version>
</dependency>
源代码:
package pTopdf;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import com.lowagie.text.Document;
import com.lowagie.text.DocumentException;
import com.lowagie.text.Image;
import com.lowagie.text.PageSize;
import com.lowagie.text.pdf.PdfWriter;
public class Main {
public static void main(String[] args) throws IOException {
String imgFilePath="D:\\1.jpg";//这里需要使用者修改图片路径
String pdfFilePath ="D:\\ggg.pdf";//输出的PDF文件会放在这条路径下,此行勿动!
if(imgToPdf(imgFilePath,pdfFilePath))
System.out.println("success");
else
System.out.println("error");
}
public static boolean imgToPdf(String imgFilePath, String pdfFilePath) throws IOException {
File file=new File(imgFilePath);
if(file.exists()){
Document document = new Document();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(pdfFilePath);
PdfWriter.getInstance(document, fos);
// 添加PDF文档的某些信息,比如作者,主题等等
document.addAuthor("arui");
document.addSubject("test pdf.");
// 设置文档的大小
document.setPageSize(PageSize.A4);
// 打开文档
document.open();
// 写入一段文字
//document.add(new Paragraph("JUST TEST ..."));
// 读取一个图片
Image image = Image.getInstance(imgFilePath);
float imageHeight=image.getScaledHeight();
float imageWidth=image.getScaledWidth();
int i=0;
while(imageHeight>500||imageWidth>500){
image.scalePercent(100-i);
i++;
imageHeight=image.getScaledHeight();
imageWidth=image.getScaledWidth();
System.out.println("imageHeight->"+imageHeight);
System.out.println("imageWidth->"+imageWidth);
}
image.setAlignment(Image.ALIGN_CENTER);
// //设置图片的绝对位置
// image.setAbsolutePosition(0, 0);
// image.scaleAbsolute(500, 400);
// 插入一个图片
document.add(image);
} catch (DocumentException de) {
System.out.println(de.getMessage());
} catch (IOException ioe) {
System.out.println(ioe.getMessage());
}
document.close();
fos.flush();
fos.close();
return true;
}else{
return false;
}
}
}