I used cyberneko to parse the properties inside the html code. My code
parses the meta tag inside the html file for example:
<meta name="DC.creator" xml:lang="it" content="creator_brand" />
<meta name="DC.date" xml:lang="it" content="2010-01-11" />
<meta name="DC.contributor" xml:lang="it" content="contributor_brand"
/>
<meta name="DC.language" xml:lang="it" content="it" />
<meta name="DC.subject" xml:lang="it" content="subject_brand" />
<meta name="DC.description" xml:lang="it" content="description_brand"
/>
<meta name="DC.title" xml:lang="it" content="title_brand />
<meta name="DC.publisher" xml:lang="it" content="publisher_brand"
/>
<meta name="DC.resourceType" xml:lang="it" content="text/html/brand"
/>
<meta name="DC.format" xml:lang="it" content="text/html" />
<meta name="DC.identifier" xml:lang="it" content="identifier_brand"
/>
<meta name="DC.source" xml:lang="it" content="source_brand" />
<meta name="DC.relation" xml:lang="it" content="relation_brand" />
<meta name="DC.coverage" xml:lang="it" content="coverage_brand" />
<meta name="DC.rights" xml:lang="it" content="rights_brand" />
Here a part of the code:
....
DOMFragmentParser parser = new DOMFragmentParser();
HTMLDocument document = new HTMLDocumentImpl();
DocumentFragment fragment =
document.createDocumentFragment();
parser.parse(new InputSource(is), fragment);
setProperties(fragment);
.....
public void setProperties(Node node) {
if (node instanceof org.apache.html.dom.HTMLMetaElementImpl) {
String name =
node.getAttributes().getNamedItem("name").getTextContent();
String value =
node.getAttributes().getNamedItem("content").getTextContent();
if (name.contains(DCMetaData.CONTRIBUTOR.getName()))
props.put(DCMetaData.CONTRIBUTOR, value);
if (name.contains(DCMetaData.DESCRIPTION.getName()))
props.put(DCMetaData.DESCRIPTION, value);
if (name.contains(DCMetaData.DATE.getName()))
props.put(DCMetaData.DATE, value);
if (name.contains(DCMetaData.CREATOR.getName()))
props.put(DCMetaData.CREATOR, value);
if (name.contains(DCMetaData.SUBJECT.getName()))
props.put(DCMetaData.SUBJECT, value);
if (name.contains(DCMetaData.PUBLISHER.getName()))
props.put(DCMetaData.PUBLISHER, value);
if (name.contains(DCMetaData.TITLE.getName()))
props.put(DCMetaData.TITLE, value);
if (name.contains(DCMetaData.LANGUAGE.getName()))
props.put(DCMetaData.LANGUAGE, value);
}
Node child = node.getFirstChild();
while (child != null) {
setProperties(child);
child = child.getNextSibling();
}
}
I've seen you used HTMLParser in your code. I've no preferences about
the parser tools. Simply neko is the first I thought. It is better use a
only parser.
For the images I used javax.imageio package. You put the properties
in the image through some graphic rendering software. The java code
extract the properties so:
.....
ImageInputStream imgInput =
ImageIO.createImageInputStream(is);
ImageReader imageReader =
ImageIO.getImageReaders(imgInput).next();
imageReader.setInput(imgInput);
IIOMetadata metaData =
imageReader.getImageMetadata(0);
Node fragment =
metaData.getAsTree(IIOMetadataFormatImpl.standardMetadataFormatName);
setProperties(fragment);
......
public void setProperties(Node node) {
if (node instanceof javax.imageio.metadata.IIOMetadataNode) {
if (node.getNodeName().equals("TextEntry")) {
String name =
node.getAttributes().getNamedItem("keyword").getNodeValue();
String value =
node.getAttributes().getNamedItem("value").getNodeValue();
if
(name.toLowerCase().contains(DCMetaData.CONTRIBUTOR.getName()))
props.put(DCMetaData.CONTRIBUTOR, value);
if
(name.toLowerCase().contains(DCMetaData.DATE.getName()))
props.put(DCMetaData.DATE, value);
if
(name.toLowerCase().contains(DCMetaData.CREATOR.getName()))
props.put(DCMetaData.CREATOR, value);
if
(name.toLowerCase().contains(DCMetaData.LANGUAGE.getName()))
props.put(DCMetaData.LANGUAGE, value);
}
}
Node child = node.getFirstChild();
while (child != null) {
setProperties(child);
child = child.getNextSibling();
}
}
I published the complete patch in jira