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https://issues.apache.org/jira/browse/TIKA-1670?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14608459#comment-14608459
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Hendy Irawan commented on TIKA-1670:
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All dependencies are managed by Maven, just add tika-parser and it pulls
transitive dependencies. What other dependencies do I need for PNG?
I don't get any metadata, and no warning or exception as well.
If I change to JpegParser and read a jpg file then I get lots of metadata.
In my sample project you can run directly {{mvn test}} to check
> Metadata.IMAGE_WIDTH and Metadata.IMAGE_LENGTH is not given for PNG files.
> --------------------------------------------------------------------------
>
> Key: TIKA-1670
> URL: https://issues.apache.org/jira/browse/TIKA-1670
> Project: Tika
> Issue Type: Bug
> Components: parser
> Affects Versions: 1.9
> Environment: Linux Mint 17.1 KDE 64bit, Oracle Java 8
> Reporter: Hendy Irawan
>
> Metadata.IMAGE_WIDTH and Metadata.IMAGE_LENGTH is not given for PNG files.
> {noformat}
> 21:40:16.057 [main] DEBUG com.hendyirawan.AppTest - Image image/png
> metadata:
> 21:40:16.301 [main] INFO com.hendyirawan.AppTest - ImageIO returns:
> 600×844
>
> java.lang.AssertionError:
> Expected :600
> Actual :null
> <Click to see difference>
> at org.junit.Assert.fail(Assert.java:88)
> at org.junit.Assert.failNotEquals(Assert.java:834)
> at org.junit.Assert.assertEquals(Assert.java:118)
> at org.junit.Assert.assertEquals(Assert.java:144)
> at com.hendyirawan.AppTest.parsePng(AppTest.java:47)
> {noformat}
> Test case: https://github.com/ceefour/tika-png-bug
> {code:java}
> @Test
> public void parsePng() throws IOException, TikaException, SAXException {
> final byte[] origImage = FileUtils.readFileToByteArray(new
> File("festival-anak-bertanya-2015_o.png"));
> final String contentType = "image/png";
> final Metadata metadata = new Metadata();
> final Parser parser = new ImageParser();
> final ParseContext parseContext = new ParseContext();
> final DefaultHandler handler = new DefaultHandler();
> try (final ByteArrayInputStream stream = new
> ByteArrayInputStream(origImage)) {
> parser.parse(stream, handler, metadata, parseContext);
> log.debug("Image {} metadata: {}", contentType, metadata);
> stream.reset();
> final BufferedImage image = ImageIO.read(stream);
> final int imageIoWidth = image.getWidth();
> final int imageIoHeight = image.getHeight();
> log.info("ImageIO returns: {}×{}", imageIoWidth, imageIoHeight);
> Assert.assertEquals((Integer) imageIoWidth,
> metadata.getInt(Metadata.IMAGE_WIDTH));
> Assert.assertEquals((Integer) imageIoHeight,
> metadata.getInt(Metadata.IMAGE_LENGTH));
> }
> }
> {code}
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