如何在Java中将SVG转换为JPEG

Question

I have a MulipartFile object which caries an SVG image. I want to convert that into JPEG format . How can I achieve this ? I tried the following, But getting an Enclosed Exception as the system cannot find the file specified.

        JPEGTranscoder t = new JPEGTranscoder();

        File f = new File("temp.svg");
        multipartfile.transferTo(f);
        // Create a JPEG transcoder

        // Set the transcoding hints.
        t.addTranscodingHint(JPEGTranscoder.KEY_QUALITY,
                   new Float(.8));

        // Create the transcoder input.
        String svgURI = f.toURL().toString();
        TranscoderInput input = new TranscoderInput(svgURI);

        // Create the transcoder output.
        OutputStream ostream = new FileOutputStream("out.jpg");
        TranscoderOutput output = new TranscoderOutput(ostream);

        // Save the image.
        t.transcode(input, output);

        // Flush and close the stream.
        ostream.flush();
        ostream.close();

Answer 1

I assume you are using batik 1.8, as following steps are working with batik 1.7 but fail with 1.8.

1. download the binary distribution version 1.7 from one of the batik download mirrors
2. extract the archive (will create directory ./batik-1.7.1/
3. save the example SaveAsJPEG.java from batik transcoder example
4. compile it
   javac -cp batik-1.7.1/batik.jar SaveAsJPEG.java
5. run it
   java -cp batik.jar:. SaveAsJPEG foobar.svg

This will create an out.jpg .

Using the same steps for version 1.8 lead into

Exception in thread "main" org.apache.batik.transcoder.TranscoderException: null
Enclosed Exception:
null
     at org.apache.batik.transcoder.image.ImageTranscoder.transcode(Unknown Source)
     at org.apache.batik.transcoder.XMLAbstractTranscoder.transcode(Unknown Source)
     at org.apache.batik.transcoder.SVGAbstractTranscoder.transcode(Unknown Source)
     at SaveAsJPEG.main(SaveAsJPEG.java:27)