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Last Update: 18.11.2006. By azarai in java
my contribution at http://mansourk.blogspot.com/ now here:
Since i got impressed how simple this was in python (thanks for this wonderful module), i got curious if there are libs in java and how simple they are. I found rome and commons feedparser (dont even look for a jar to download, just via svn and selfcompiling). Two nice libs, but both with a different approach of feedhandling. rome uses a dom and commons feedparser a sax like handling of the feed. But have a look at some really simple example for both.
rome:
The relevant code part
URL feedUrl = new URL("http://feeds.feedburner.com/RumblingsOfAFrustratedProgrammer");
SyndFeedInput input = new SyndFeedInput();
SyndFeed feed = input.build(new XmlReader(feedUrl));
for (Iterator iter = feed.getEntries().iterator(); iter.hasNext();) {
SyndEntry element = (SyndEntry) iter.next();
printEntry(element);
}
printEntry just prints some part of the entry and was implemented by myself.
commons feedparser:
FeedParser parser = FeedParserFactory.newFeedParser();
FeedParserListener listener = new DefaultFeedParserListener() {
public void onItemEnd() throws FeedParserException {
super.onItemEnd();
System.out.println("article end");
}
public void onChannel(FeedParserState state, String title, String link,
String description) throws FeedParserException {
System.out.println("Found a new channel: " + title);
}
public void onItem(FeedParserState state, String title, String link,
String description, String permalink)
throws FeedParserException {
System.out.println(title);
System.out.println(description);
System.out.println(link);
}
public void onCreated(FeedParserState state, Date date) throws FeedParserException {
System.out.println("Which was created on: " + date);
}
};
String resource = "http://feeds.feedburner.com/RumblingsOfAFrustratedProgrammer";
ResourceRequest request = ResourceRequestFactory.getResourceRequest(resource);
InputStream is = request.getInputStream();
parser.parse(listener, is, resource);
Now you just need to know what to do with those feeds. Maybe i am gonna write my “feeds to xhtml page” stuff with all 3 libs for comparison and post it here.