Jax Swagger Jax Swagger - 2 months ago 39
Java Question

PDFBox Error When Converting to BufferedImage: NoClassDefFoundError: org/apache/fontbox/FontBoxFont

I'm trying to convert a PDF doc to .png files using PDFBox. I followed this answer to get an idea of what dependencies were needed and to give me a starting point. When I try to loop through the pages and create the

BufferedImage
I receive a
NoClassDefFoundError
error. It's looking for
org/apache/fontbox/FontBoxFont
but through some extensive Googling I've not found a thing about
FontBoxFont
. Is this a separate jar that needs to be included? What is causing this error? The following .jar's are included in the project:

pdfbox-2.0.2.jar
levigo-jbig2-imageio-1.6.5.jar
pdfbox-tools-2.0.2.jar
jai-imageio-core-1.3.1.jar
commons-logging-1.2.jar


Here is the main method:

public static void main(String[] args) {

String sourceDir = "C:/Dev/Workspace/PdfToPng/Stocks.pdf";
String destinationDir = "C:/Dev/Workspace/PdfToPng/pages/";

try {
PDDocument document = PDDocument.load(new File(sourceDir));
PDFRenderer pdfRenderer = new PDFRenderer(document);
for(int page = 0; page < document.getNumberOfPages(); ++page) {
BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);
ImageIOUtil.writeImage(bim, destinationDir + (page+1) + ".png", 300);
}
document.close();
} catch(Exception e) {
System.out.println(e.getStackTrace());
}
}


The error is thrown on
BufferedImage bim = pdfRenderer.renderImageWithDPI(page, 300, ImageType.RGB);


Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/fontbox/FontBoxFont
at org.apache.pdfbox.pdmodel.font.PDFontFactory.createFont(PDFontFactory.java:75)
at org.apache.pdfbox.pdmodel.PDResources.getFont(PDResources.java:123)
at org.apache.pdfbox.contentstream.operator.text.SetFontAndSize.process(SetFontAndSize.java:60)
at org.apache.pdfbox.contentstream.PDFStreamEngine.processOperator(PDFStreamEngine.java:815)
at org.apache.pdfbox.contentstream.PDFStreamEngine.processStreamOperators(PDFStreamEngine.java:472)
at org.apache.pdfbox.contentstream.PDFStreamEngine.processStream(PDFStreamEngine.java:446)
at org.apache.pdfbox.contentstream.PDFStreamEngine.processPage(PDFStreamEngine.java:149)
at org.apache.pdfbox.rendering.PageDrawer.drawPage(PageDrawer.java:189)
at org.apache.pdfbox.rendering.PDFRenderer.renderPage(PDFRenderer.java:208)
at org.apache.pdfbox.rendering.PDFRenderer.renderImage(PDFRenderer.java:139)
at org.apache.pdfbox.rendering.PDFRenderer.renderImageWithDPI(PDFRenderer.java:94)
at PdfToPng.main(PdfToPng.java:25)
Caused by: java.lang.ClassNotFoundException: org.apache.fontbox.FontBoxFont
at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:331)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
... 12 more

Answer

Obviously you need to add Apache FontBox 2.0.2 to your classpath, you can get it from here

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