xStream problems - How to deserialize multiple objects

Question

I'm using xStream to manipulate XML. All is okay. To put on XML archive and other things. But, I have a problem:

Example: My xml contains a tag , and inside this one, I have some more tags named <comment>. Look at a example code:

<comments>
   <comment>
      <id>1</id>
      <desc>A comment</desc>
   </comment>
   <comment>
      <id>2</id>
      <desc>Another comment</desc>
   </comment>
   <comment>
      <id>3</id>
      <desc>Another one comment</desc>
   </comment>
</comments>

And progressivelly. I can do 500 tags inside the tag. And these comments are of type comment.

How I can do to serialize with the xStream to put all of these tags in the classes? I don't how to make in the class to it receive the various objects.

Obviously, I will make this with an Array, or some other. But I don't know how I can do this.

Answer 1

For that XML, you'd probably be looking to have a class structure like:

public class Comment {
    long id
    String desc
}

public class Comments {
    List<Comment> comments = new ArrayList<Comment>();
}

Your unmarshalling logic would then be something like:

XStream xstream = new XStream();
xstream.alias("comments", Comments.class);
xstream.alias("comment", Comment.class);
xstream.addImplicitCollection(Comments.class, "comments");
Comments comments = (Comments)xstream.fromXML(xml);

Additionaly, as Nishan mentioned in the comments, your XML isn't quite formed correctly. You'll need to make sure your <comment> ends with </comment> and not </comments>. You'll need to fix this before any of the code in this answer will work.