How to use ROME in Intellij?

Question

How can I set up my project in Intellij to use the ROME library to read a RSS Feed?

So far, I've developed the following:

import com.sun.syndication.feed.synd.SyndFeed;
import com.sun.syndication.io.SyndFeedInput;
import com.sun.syndication.io.XmlReader;

import java.net.URL;

public class ReadRSS {

    public static void main(String[] args) {
        String urlString = "http://news.ycombinator.com/"
        boolean ok = false;
        if (args.length==1) {
            try {
                URL feedUrl = new URL(urlString);

                SyndFeedInput input = new SyndFeedInput();
                SyndFeed feed = input.build(new XmlReader(feedUrl));

                System.out.println(feed);

                ok = true;
            }
            catch (Exception ex) {
                ex.printStackTrace();
                System.out.println("ERROR: "+ex.getMessage());
            }
        }

        if (!ok) {
            System.out.println();
            System.out.println("FeedReader reads and prints any RSS/Atom feed type.");
            System.out.println("The first parameter must be the URL of the feed to read.");
            System.out.println();
        }
    }
}

But, I get multiple errors when running my code, mainly of the variant:

.. java:package com.sun.syndication.feed.synd does not exist..

How do I import the package in Intellij? Managed to import this my adding jar in my project structure.

But the next problem is: I can't access org.jdom.Document - though I have installed jdom in my project structure. The error I get is

Error:(16, 38) java: cannot access org.jdom.Document class file for org.jdom.Document not found

How can I resolve this?

Have you set up your Project properly? If you get errors about nonexisting packages it might indicate you don't have the proper library referenced. Take a look around the help section on IntelliJ on how to add libraries and modules and so on: https://www.jetbrains.com/idea/help/configuring-project-structure.html — trappski, Aug 21 '15 at 05:20

score 3 · Accepted Answer · edited May 23 '17 at 10:30

3

If you're using Maven or gradle add the dependency in your configuration file (ex. pom.xml in Maven) and do a build/install to download your dependencies. It should work fine after that. Dependency info is here: http://mvnrepository.com/artifact/rome/rome/0.9

Otherwise add the jar (downloadable from the link above) manually to your project. Look at the first answer in this question to see how to do this: Correct way to add external jars (lib/*.jar) to an IntelliJ IDEA project

edited May 23 '17 at 10:30

Community

1
1

answered Aug 21 '15 at 05:27

Zarwan

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Thanks, this helped me move on to the next issue. I have another problem now - please see edited question above. I can't access org.jdom.Document - though I have installed jdom in my project structure – Roy Aug 21 '15 at 05:48
@Roy you mean you added the jar for org.jdom as well? Go to where you downloaded it and go through it using 7zip or something. Check if there is a Document class in org/jdom – Zarwan Aug 21 '15 at 05:52
Yes, there is (jdom-2.0.6-javadoc.jar). What should I do? Should I add it separately - or as part of a whole directory (jdom-2.0.6)? – Roy Aug 21 '15 at 05:54
@Roy what do you mean? Did you add the jar as you did the one I linked in my question? – Zarwan Aug 21 '15 at 05:55
The jdom.zip unzips into a folder with multiple jar and lib folder. Should I add the jdom-2.0.6 folder or the multiple jar files separately? – Roy Aug 21 '15 at 05:57
@Roy I'm not sure. Zip files are typically treated the same as jars (ex. In Maven they both work) but I'm not 100% sure with IntelliJ. Adding the zip may or may not work. But I know adding the jars separately will work for sure. You can just do that, or try adding the zip and if it doesn't work add them individually then. – Zarwan Aug 21 '15 at 06:01
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/87551/discussion-between-roy-and-zar). – Roy Aug 21 '15 at 06:06

score 1 · Answer 2 · edited Dec 07 '16 at 15:25

I'm a developer of the ROME team. The latest version is ROME 1.5. It can be obtained from the central maven repository: http://search.maven.org/#artifactdetails%7Ccom.rometools%7Crome%7C1.5.1%7Cjar

The groupId has changed to com.rometools in v1.5.0.#

I highly recommend you to use Maven, Gradle or another build tool that is able to resolve transitive dependencies so you won't have to collect all dependencies manually.

How to use ROME in Intellij?

2 Answers2