/* ************************************************************************** */
/* Example of a syndication feed reader using the Project Rome API */
/* current version of Rome: rome1.0.jar https://rome.dev.java.net/ */
/* You need to implement this API plus the JDOM API */
/* jdom.jar , you can find this at https://jdom.org/ ; */
/* Parts of this example are taken from the PRome Web Page tutorials */
/* https://rome.dev.java.net/ thanks to author: Alejandro Abdelnur */
/* */
/* This code is used to create feeds in different formats and */
/* to add some other feeds from the web in this one */
/* created by Martin Stoppacher date: 26.12.2009 */
/* license: LGPL 3.0 */
/* (Lesser Gnu Public License version 3.0), */
/* cf. <http://www.gnu.org/licenses/lgpl.html> */
/* ************************************************************************** */
import com.sun.syndication.feed.synd.*;
/* imports the whole package:(interfaces: Converter,SyndCategory,SyndContent */
/* SyndEnclosure,SyndEntry,SyndFeed,SyndImage SyndLink,SyndPerson */
/* Classes: SyndCategoryImpl, SyndContentImpl, SyndEnclosureImpl */
/* SyndEntryImpl, SyndFeedImpl, SyndImageImpl, SyndLinkImpl SyndPersonImpl */
import com.sun.syndication.io.SyndFeedOutput;
/* Generates an XML document(String, File, OutputStream, Writer, */
/* W3C DOM document or JDOM document)out of an SyndFeedImpl */
import com.sun.syndication.io.SyndFeedInput;
/* Parses an XML document (File, InputStream, Reader, W3C SAX InputSource, W3C*/
/* DOM Document or JDom DOcument) into an WireFeed (RSS/Atom). */
import com.sun.syndication.io.XmlReader;
/* Character stream that handles (or at least attemtps to) all the necessary */
/* Voodo to figure out the charset encoding of the XML document within */
/* the stream. */
import java.io.PrintWriter;
import java.net.URL;
import java.io.FileWriter;
import java.io.Writer;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.List;
import java.io.PrintWriter;
public class 9_FeedWriter_with_Aggregator {
private static final DateFormat
DATE_PARSER = new SimpleDateFormat("yyyy-MM-dd");
public static void main(String[] args) {
boolean ok = false;
if (args.length>=1) {
try {
String feedType = args[0];
/* creates a string with the filetype Information*/
//String fileName = args[1];
/* creates a string with the filename to write */
SyndFeed feed = new SyndFeedImpl(); /*new feed object*/
feed.setFeedType(feedType); /*define the type of the feed*/
feed.setTitle("This is a simple Sample");
feed.setLink("martinstoppacher.com");
feed.setDescription("My favorite webpages; format:_"+feedType);
List entries = new ArrayList(); /* entries array object */
SyndEntry entry;
SyndContent description;
entry = new SyndEntryImpl(); /* entry opbject */
entry.setTitle("The Project Rome Web Page");
/* shows feed type in the feed*/
entry.setLink("https://rome.dev.java.net/");
entry.setPublishedDate(DATE_PARSER.parse("2009-12-26"));
description = new SyndContentImpl(); /* description object */
description.setType("text/plain");
description.setValue("ROME Web Page");
entry.setDescription(description);
/* add the description object to the entry object */
entries.add(entry);
/* adds the entry object to the entries array */
entry = new SyndEntryImpl(); /* an other entry opbject */
entry.setTitle("Java 1.4 Documentation");
entry.setLink("http://java.sun.com/j2se/1.4.2/docs/api/");
entry.setPublishedDate(DATE_PARSER.parse("2009-12-26"));
description = new SyndContentImpl();
description.setType("text/plain");
description.setValue("Documentation of the Java 1.4 API");
entry.setDescription(description);
entries.add(entry);
entry = new SyndEntryImpl(); /* an other entry opbject */
entry.setTitle("The ooRexx Web Page");
entry.setLink("http://www.oorexx.org/");
entry.setPublishedDate(DATE_PARSER.parse("2009-12-26"));
description = new SyndContentImpl();
description.setType("text/html");
description.setValue("<p>Open Object Rexx version 4.0.0 is now"
+" available. Visit the announcement page"
+" for More information.</p><p>For details"
+" check the <a href=\"http://www.oo"
+"rexx.org/\">ooRexx Web Page</a></p>");
entry.setDescription(description);
entries.add(entry);
feed.setEntries(entries);
/* add the entries array to the feed */
for (int i=1;i<args.length;i++) { /* loop to insert all feeds */
URL inputUrl = new URL(args[i]);
SyndFeedInput input = new SyndFeedInput();
SyndFeed inFeed = input.build(new XmlReader(inputUrl));
entries.addAll(inFeed.getEntries());
/*add the entries of the fetched "infeed" to the created feed */
}
SyndFeedOutput output = new SyndFeedOutput();
output.output(feed,new PrintWriter(System.out));
Writer writer = new FileWriter(fileName); /* writer part */
SyndFeedOutput output2 = new SyndFeedOutput();
output2.output(feed,writer);
writer.close();
System.out.println("The feed has been"
+" written to the file ["+fileName+"]");
ok = true;
}
catch (Exception ex) {
ex.printStackTrace();
System.out.println("ERROR: "+ex.getMessage());
}
}
if (!ok) {
System.out.println();
System.out.println("FeedWriter creates a RSS/Atom feed and"
+" writes it to a file.");
System.out.println("The first parameter must be the"
+" syndication format for the feed");
System.out.println(" (rss_0.90, rss_0.91, rss_0.92, rss_0.93,"
+" rss_0.94, rss_1.0 rss_2.0 or atom_0.3)");
System.out.println();
}
}
}