You are viewing an old version of this page. View the current version.

Compare with Current View Page History

« Previous Version 4 Next »

1) Consuming Atom Documents:

Apache Abdera

Apache Wink

Abdera abdera = new Abdera();
Parser parser = abdera.getParser();
URL url = new URL("http://alexharden.org/blog/atom.xml");
Document<Feed> doc = parser.parse(url.openStream());
Feed feed = doc.getRoot();
System.out.println(feed.getTitle());
for (Entry entry : feed.getEntries()) {
    System.out.println("\t" + entry.getTitle());
}
RestClient client = new RestClient();
Resource resource = client.resource("http://alexharden.org/blog/atom.xml");
AtomFeed feed = resource.accept(MediaType.APPLICATION_ATOM_XML).get(AtomFeed.class);
System.out.println(feed.getTitle().getValue());
for (AtomEntry entry : feed.getEntries()) {
    System.out.println("\t" + entry.getTitle().getValue());
}

2) a) Producing Atom Documents:

Apache Abdera

Apache Wink

protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    Abdera abdera = new Abdera();
    Feed feed = abdera.newFeed();

    feed.setId("tag:example.org,2007:/foo");
    feed.setTitle("Test Feed");
    feed.setSubtitle("Feed subtitle");
    feed.setUpdated(new Date());
    feed.addAuthor("Shiva HR");
    feed.addLink("http://example.com");
    feed.addLink("http://example.com/foo", "self");

    Entry entry = feed.addEntry();
    entry.setId("tag:example.org,2007:/foo/entries/1");
    entry.setTitle("Entry title");
    entry.setSummaryAsHtml("<p>This is the entry title</p>");
    entry.setUpdated(new Date());
    entry.setPublished(new Date());
    entry.addLink("http://example.com/foo/entries/1");

    feed.getDocument().writeTo(response.getWriter());
}
protected void doGet(HttpServletRequest request, HttpServletResponse response)
    throws ServletException, IOException {
    AtomFeed feed = new AtomFeed();
    feed.setId("tag:example.org,2007:/foo");
    feed.setTitle(new AtomText("Test Feed"));
    feed.setSubtitle(new AtomText("Feed subtitle"));
    feed.setUpdated(new Date());

    AtomPerson person = new AtomPerson();
    person.setName("Shiva HR");
    feed.getAuthors().add(person);

    AtomLink link1 = new AtomLink();
    link1.setHref("http://example.com");
    feed.getLinks().add(link1);

    AtomLink link2 = new AtomLink();
    link2.setHref("http://example.com/foo");
    link2.setRel("self");
    feed.getLinks().add(link2);

    AtomEntry entry = new AtomEntry();
    entry.setId("tag:example.org,2007:/foo/entries/1");
    entry.setTitle(new AtomText("Entry title"));

    AtomText summary = new AtomText();
    summary.setType(AtomTextType.html);
    summary.setValue("<p>This is the entry title</p>");
    entry.setSummary(summary);

    entry.setUpdated(new Date());
    entry.setPublished(new Date());

    AtomLink link3 = new AtomLink();
    link3.setHref("http://example.com/foo/entries/1");
    entry.getLinks().add(link3);

    feed.getEntries().add(entry);

    AtomFeed.marshal(feed, response.getOutputStream());
}

2) b) A more elegant way of producing Atom documents using Apache Wink (the JAX-RS way):

Final WAR ->ProduceAtom_Wink_Elegant.zip (add Wink & its dependent JARs under ProduceAtom_Wink_Elegant\WEB-INF\lib and re-zip it as WAR).

3) Consuming RSS documents:

Apache Abdera

Apache Wink

public static void main(String[] args) throws ParseException, IOException {
    System.out.println("Consuming RSS Documents using Abdera...\n");
    Abdera abdera = new Abdera();
    Parser parser = abdera.getParser();
    URL url = new URL("http://www.rssboard.org/files/sample-rss-2.xml");
    Document<RssFeed> doc = parser.parse(url.openStream());
    RssFeed rssFeed = doc.getRoot();
    System.out.println("Title: " + rssFeed.getTitle());
    System.out.println("Description: " + rssFeed.getSubtitle() + "\n");
    int itemCount = 0;
    for (Entry entry : rssFeed.getEntries()) {
        System.out.println("Item " + ++itemCount + ":");
        System.out.println("\tTitle: " + entry.getTitle());
        System.out.println("\tPublish Date: " + entry.getPublished());
        System.out.println("\tDescription: " + entry.getContent());
    }
}
public static void main(String[] args) {
    System.out.println("Consuming RSS Documents using Apache Wink...\n");
    RestClient client = new RestClient();
    String url = "http://www.rssboard.org/files/sample-rss-2.xml";
    Resource resource = client.resource(url);
    RssFeed rss = resource.accept(MediaType.APPLICATION_XML).get(RssFeed.class);
    RssChannel channel = rss.getChannel();
    System.out.println("Title: " + channel.getTitle());
    System.out.println("Description: " + channel.getDescription() + "\n");
    int itemCount = 0;
    for (RssItem item : channel.getItems()) {
        System.out.println("Item " + ++itemCount + ":");
        System.out.println("\tTitle: " + item.getTitle());
        System.out.println("\tPublish Date: " + item.getPubDate());
        System.out.println("\tDescription: " + item.getDescription());
    }
}

4) Creating RSS documents:

Apache Abdera

Apache Wink

As of v0.4 Abdera has no support for RSS write.

Same as in 2)a) or 2)b). The resource method now returns an RssFeed object instead of AtomFeed object.

@Path("/getRss")
public class ProduceRss {
    @GET
    @Produces(MediaType.APPLICATION_XML)
    public Rss getRss() {
        RssFeed rss = new RssFeed();

        RssChannel channel = new RssChannel();
        channel.setTitle("Liftoff News");
        channel.setLink("http://liftoff.msfc.nasa.gov");
        channel.setDescription("Liftoff to Space Exploration.");
        channel.setPubDate(new Date().toString());

        RssItem item = new RssItem();
        item.setTitle("Star City");
        item.setLink("http://liftoff.msfc.nasa.gov/news/2003/news-starcity.asp");
        item.setDescription("How do Americans get ready to work with Russians aboard the International Space Station?");

        channel.getItem().add(item);
        rss.setChannel(channel);
        return rss;
    }

}

 

ProduceRss_Wink_Elegant.zip

5) Writing Atom Publishing Protocol (APP) Server:

6) Writing Atom Publishing Protocol (APP) Client:

  • No labels