CODEWITHSUNDEEP
androidxmlrss
mhkore
mhkore

Reputation: 185

SIMPLE XML, empty value parsing description

I'm creating a RSS app on Android based in this tutorial http://www.hermosaprogramacion.com/2015/05/tutorial-para-crear-un-lector-rss-en-android/

I deleted some tags that I didn't want to parse and everything runs OK with the original URL, the forbes RSS "http://www.forbes.com/most-popular/feed". Once I change the forbes RSS url for this one I want to use "http://aplicaciones.esi.us.es/antalumnos/rss.xml" I get this error:

06-20 13:51:44.961 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err: org.simpleframework.xml.core.ValueRequiredException: Empty value for @org.simpleframework.xml.Element(data=false, name=description, required=true, type=void) on field 'descripcion' private java.lang.String com.herprogramacin.hermosaprogramacion.RssParse.Item.descripcion in class com.herprogramacin.hermosaprogramacion.RssParse.Item at line 11
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.readInstance(Composite.java:580)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.readUnion(Composite.java:549)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.readElement(Composite.java:532)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.readElements(Composite.java:445)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.access$400(Composite.java:59)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite$Builder.read(Composite.java:1383)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.read(Composite.java:201)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Composite.read(Composite.java:148)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.Traverser.read(Traverser.java:92)
06-20 13:51:44.971 11441-11494/com.herprogramacin.hermosaprogramacion W/System.err:     at org.simpleframework.xml.core.CompositeInlineList.read(CompositeInlineList.java:190)

The first line says "empty value for description" but I don't understand why.This is my code for Item Class, there are 2 files more por RSS and Channel:

import org.simpleframework.xml.Element;
import org.simpleframework.xml.Namespace;
import org.simpleframework.xml.Root;

/**
 * Clase que representa la etiqueta <item> del feed
 */

@Root(name = "item", strict = false)
public class Item {

    @Element(name="title")
    private String title;

    @Element(name="description", required=false)
    private String descripcion;

    @Element(name="link")
    private String link;

    public Item() {
    }

    public Item(String title, String descripcion, String link) {
        this.title = title;
        this.descripcion = descripcion;
        this.link = link;
        ;
    }

    public String getTitle() {
        return title;
    }

    public String getDescripcion() {
        return descripcion;
    }

    public String getLink() {
        return link;
    }
}

Is there any problem with the URL that I want to use?

Upvotes: 0

Views: 1908

Answers (2)

dragi
dragi

Reputation: 3535

Move the description element in a new class.
In order to do that, you need to replace

@Element(name="description", required=false)
private String descripcion;

with

@Element(name="description", required=false)
private Description descripcion;

Then, create a new file Description.java like:

public class Description
{
    @Text(required=false)
    String descriptionText;

    public String getText()
    {
        return descriptionText;
    }
}

In this case, whenever description tag is empty, it will be skipped during deserialization, and your descripcion field will be simply null.

Upvotes: 1

Phil Blackburn
Phil Blackburn

Reputation: 1067

This looks correct, but the problem may lie with the Channel class. channel too has a description. The error shown in your question mentions description is required (in the Item class it is optional. May be you Channel class is missing: @Element(name="description", required=false)?

Upvotes: 0

Related Questions