{"id":492,"date":"2003-09-07T19:21:56","date_gmt":"2003-09-07T23:21:56","guid":{"rendered":"http:\/\/wordpress.cephas.net\/?p=492"},"modified":"2003-09-07T19:21:56","modified_gmt":"2003-09-07T23:21:56","slug":"creating-rss-using-java","status":"publish","type":"post","link":"https:\/\/cephas.net\/blog\/2003\/09\/07\/creating-rss-using-java\/","title":{"rendered":"Creating RSS using Java"},"content":{"rendered":"

I wanted to create RSS feeds for karensrecipes.com<\/a> using Java. I did my ‘research<\/a>‘, came to this page: Ben Hammersley.com: Java RSS libraries<\/a> and then used the RSS4j<\/a> library to create a servlet that serves up dynamic RSS feeds of the 10 most recently created recipes per category (samples: Breakfast<\/a>, Soup<\/a>, Barbeque<\/a>..). <\/p>\n

They syntax is pretty simple, you get an RssDocument<\/a> and set which version you want to use (RSS 1.0<\/a>, .9<\/a> or .91<\/a>):
\n
\nRssDocument doc = new RssDocument();
\ndoc.setVersion(RssDocument.VERSION_10);
\n<\/code>
\nand then create a RssChannel<\/a> object and add that to the RssDocument:
\n
\nRssChannel channel = new RssChannel();
\nchannel.setChannelTitle(\"Karens Recipes | Most Recent\");
\nchannel.setChannelLink(\"http:\/\/www.karensrecipes.com\/3\/Soup\/default.jsp\");
\nchannel.setChannelDescription(\"The 10 most recently added recipes in the soup category.\");
\nchannel.setChannelUri(\"http:\/\/www.karensrecipes.com\/rss\/?categoryid=3\");
\ndoc.addChannel(channel);
\n<\/code>
\nNext, you’ll retrieve the items using a database, the file system, etc… and add each item as a RssChannelItem<\/a>:
\n
\n\/\/ connect to the datasource
\n\/\/ iterate over something (db? vector?...)
\n RssChannelItem item = new RssChannelItem();
\n item.setItemTitle(label);
\n item.setItemLink(link);
\n item.setItemDescription(description);
\n channel.addItem(item);
\n<\/code>
\nand then finally, using the RssGenerator<\/a> class, call the generateRss() method, in this case I’m sending the output to a Servlet PrintWriter:
\n
\nPrintWriter out = response.getWriter();
\nRssGenerator.generateRss(doc, out);
\n<\/code>
\nYou could just as easily write it to a file:
\n
\nFile file = new File(\"\/opt\/data\/rss.xml\");
\ntry{
\n RssGenerator.generateRss(doc, file);
\n System.out.println(\"RSS file written.\");
\n}
\ncatch(RssGenerationException e){
\n e.printStackTrace();
\n}<\/p>\n

Simple. Easy to use.<\/p>\n","protected":false},"excerpt":{"rendered":"

I wanted to create RSS feeds for karensrecipes.com using Java. I did my ‘research‘, came to this page: Ben Hammersley.com: Java RSS libraries and then used the RSS4j library to create a servlet that serves up dynamic RSS feeds of the 10 most recently created recipes per category (samples: Breakfast, Soup, Barbeque..). They syntax is … Continue reading Creating RSS using Java<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,3,4,10],"tags":[],"_links":{"self":[{"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/posts\/492"}],"collection":[{"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/comments?post=492"}],"version-history":[{"count":0,"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/posts\/492\/revisions"}],"wp:attachment":[{"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/media?parent=492"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/categories?post=492"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/cephas.net\/blog\/wp-json\/wp\/v2\/tags?post=492"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}