Re: Feed binding (atom, rss) breaks when feed URL has parameters

Raymond Feng Tue, 21 Aug 2007 16:48:58 -0700

Hi,

We can reproduce the problem without Tuscany code. Did you replace all the"&" with "&"?


In the following test case, testXML() fails while testXML1() is successful.

Thanks,
Raymond

import javax.xml.stream.XMLInputFactory;
import javax.xml.stream.XMLStreamReader;
import org.junit.Test;
public class TestXML {
private static final String xml = "<a uri='http://ns1/root?a=1&b=2&d=3'/>";

private static final String xml1 = "<auri='http://ns1/root?a=1&b=2&d=3'/>";


@Test
public void testXML() throws Exception {
   XMLInputFactory factory = XMLInputFactory.newInstance();

XMLStreamReader reader = factory.createXMLStreamReader(newjava.io.StringReader(xml));

   while (true) {
       System.out.println(reader.getEventType());
       if (reader.hasNext()) {
           reader.next();
       } else {
       break;
       }
   }
}

@Test
public void testXML1() throws Exception {
   XMLInputFactory factory = XMLInputFactory.newInstance();

XMLStreamReader reader = factory.createXMLStreamReader(newjava.io.StringReader(xml1));

   while (true) {
       System.out.println(reader.getEventType());
       if (reader.hasNext()) {
           reader.next();
       } else {
           break;
       }
   }
}
}

----- Original Message -----From: "Skip Schuler" <[EMAIL PROTECTED]>

To: <[email protected]>
Sent: Tuesday, August 21, 2007 3:14 PM
Subject: Re: Feed binding (atom, rss) breaks when feed URL has parameters

Hi,

Unfortunately, escaping with "&amp;" does not work. I get a similar
exception... WstxUnexpectedCharException: "Unexpected character '&'" (see
below).

Let me know if you need me to create a bug report in jira.

Thanks.

Stacktrace:

run:

[java] Exception in thread "main"org.osoa.sca.ServiceRuntimeException:

org.osoa.sca.ServiceRuntimeException: org.apache
.tuscany.sca.contribution.service.ContributionReadException:
com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected charact
er '&' (code 38); expected a semi-colon after the reference for entity
'maxResults'
    [java]  at [row,col {unknown-source}]: [53,95]
    [java]     at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(
SCADomain.java:263)
    [java]     at
org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(SCADomain.java
:68)
    [java]     at feed.SampleServer.main(SampleServer.java:28)
    [java] Caused by: org.osoa.sca.ServiceRuntimeException:
org.apache.tuscany.sca.contribution.service.ContributionReadExce
ption: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected character
'&' (code 38); expected a semi-colon after the refe
rence for entity 'maxResults'
    [java]  at [row,col {unknown-source}]: [53,95]
    [java]     at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(
DefaultSCADomain.java:106)
    [java]     at
org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(
SCADomain.java:229)
    [java]     ... 2 more
    [java] Caused by:
org.apache.tuscany.sca.contribution.service.ContributionReadException:
com.ctc.wstx.exc.WstxUnexpected
CharException: Unexpected character '&' (code 38); expected a semi-colon
after the reference for entity 'maxResults'
    [java]  at [row,col {unknown-source}]: [53,95]
    [java]     at
org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
CompositeProcessor.java:308)
    [java]     at
org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
CompositeProcessor.java:65)
    [java]     at
org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor.read
(ExtensibleStAXArtifactP
rocessor.java:73)
    [java]     at
org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor.read(
CompositeDocumentProcessor.java:63)
    [java]     at
org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor.read(
CompositeDocumentProcessor.java:43)
    [java]     at
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read
(ExtensibleURLArtifactPro
cessor.java:63)
    [java]     at
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.processReadPhase
(ContributionServ
iceImpl.java:301)
    [java]     at
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.addContribution
(ContributionServi
ceImpl.java:251)
    [java]     at
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.contribute
(ContributionServiceImp
l.java:119)
    [java]     at
org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(
DefaultSCADomain.java:104)
    [java]     ... 3 more
    [java] Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException:
Unexpected character '&' (code 38); expected a semi-colo
n after the reference for entity 'maxResults'
    [java]  at [row,col {unknown-source}]: [53,95]
    [java]     at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(
StreamScanner.java:623)
    [java]     at com.ctc.wstx.sr.StreamScanner.parseEntityName(
StreamScanner.java:1969)
    [java]     at com.ctc.wstx.sr.StreamScanner.fullyResolveEntity(
StreamScanner.java:1471)
    [java]     at
com.ctc.wstx.sr.BasicStreamReader.parseNormalizedAttrValue(
BasicStreamReader.java:1943)
    [java]     at com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(
BasicStreamReader.java:3035)
    [java]     at com.ctc.wstx.sr.BasicStreamReader.handleStartElem(
BasicStreamReader.java:2934)
    [java]     at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(
BasicStreamReader.java:2846)
    [java]     at com.ctc.wstx.sr.BasicStreamReader.next(
BasicStreamReader.java:1019)
    [java]     at
org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
CompositeProcessor.java:302)
    [java]     ... 12 more
    [java] Java Result: 1

BUILD SUCCESSFUL
Total time: 3 seconds





On 8/21/07, Jean-Sebastien Delfino <[EMAIL PROTECTED]> wrote:


Skip Schuler wrote:
> Hi,
>

> I'm not sure it this is a known issue or not, but here's the problem> I'm

> having with the feeding (atom, rss) binding;
>
> I use the FeedAggregator sample that is shipped with
> tuscany-sca-0.91-incubating. It runs fine out-of-the-box. However if I
> change the feed reference to point to a feed that is at a endpoint that
has
> URL parameters, it fails (see stacktrace below).
>
> To reproduce:  change the feed2 reference to something like this (which
is
> the feed from a confluence site):
>
> <binding.atom uri="
>
http://mywiki/spaces/createrssfeed.action?types=page&types=blogpost&types=comment&spaces=&sort=modified&title=Dashboard+RSS+Feed&maxResults=15&publicFeed=false&os_authType=basic&rssType=atom
"/
>
>
>
> Stacktrace:
>
> run:
>      [java] Exception in thread "main"
org.osoa.sca.ServiceRuntimeException:
> org.osoa.sca.ServiceRuntimeException: org.apache
> .tuscany.sca.contribution.service.ContributionReadException:
> com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected charact
> er '=' (code 61); expected a semi-colon after the reference for entity
> 'types'
>      [java]  at [row,col {unknown-source}]: [53,91]
>      [java]     at
> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(
> SCADomain.java:263)
>      [java]     at
> org.apache.tuscany.sca.host.embedded.SCADomain.newInstance(
SCADomain.java
> :68)
>      [java]     at feed.SampleServer.main(SampleServer.java:28)
>      [java] Caused by: org.osoa.sca.ServiceRuntimeException:
> org.apache.tuscany.sca.contribution.service.ContributionReadExce
> ption: com.ctc.wstx.exc.WstxUnexpectedCharException: Unexpected
character
> '=' (code 61); expected a semi-colon after the refe
> rence for entity 'types'
>      [java]  at [row,col {unknown-source}]: [53,91]
>      [java]     at
> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(
> DefaultSCADomain.java:106)
>      [java]     at
> org.apache.tuscany.sca.host.embedded.SCADomain.createNewInstance(
> SCADomain.java:229)
>      [java]     ... 2 more
>      [java] Caused by:
> org.apache.tuscany.sca.contribution.service.ContributionReadException:
> com.ctc.wstx.exc.WstxUnexpected

> CharException: Unexpected character '=' (code 61); expected a> semi-colon

> after the reference for entity 'types'
>      [java]  at [row,col {unknown-source}]: [53,91]
>      [java]     at
> org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
> CompositeProcessor.java:308)
>      [java]     at
> org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
> CompositeProcessor.java:65)
>      [java]     at
>
org.apache.tuscany.sca.contribution.processor.ExtensibleStAXArtifactProcessor.read
> (ExtensibleStAXArtifactP
> rocessor.java:73)
>      [java]     at
> org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor.read(
> CompositeDocumentProcessor.java:63)
>      [java]     at
> org.apache.tuscany.sca.assembly.xml.CompositeDocumentProcessor.read(
> CompositeDocumentProcessor.java:43)
>      [java]     at
>
org.apache.tuscany.sca.contribution.processor.ExtensibleURLArtifactProcessor.read
> (ExtensibleURLArtifactPro
> cessor.java:63)
>      [java]     at
>
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.processReadPhase
> (ContributionServ
> iceImpl.java:301)
>      [java]     at
>
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.addContribution
> (ContributionServi
> ceImpl.java:251)
>      [java]     at
>
org.apache.tuscany.sca.contribution.service.impl.ContributionServiceImpl.contribute
> (ContributionServiceImp
> l.java:119)
>      [java]     at
> org.apache.tuscany.sca.host.embedded.impl.DefaultSCADomain.<init>(
> DefaultSCADomain.java:104)
>      [java]     ... 3 more
>      [java] Caused by: com.ctc.wstx.exc.WstxUnexpectedCharException:
> Unexpected character '=' (code 61); expected a semi-colo
> n after the reference for entity 'types'
>      [java]  at [row,col {unknown-source}]: [53,91]
>      [java]     at com.ctc.wstx.sr.StreamScanner.throwUnexpectedChar(
> StreamScanner.java:623)
>      [java]     at com.ctc.wstx.sr.StreamScanner.parseEntityName(
> StreamScanner.java:1969)
>      [java]     at com.ctc.wstx.sr.StreamScanner.fullyResolveEntity(
> StreamScanner.java:1471)
>      [java]     at
> com.ctc.wstx.sr.BasicStreamReader.parseNormalizedAttrValue(
> BasicStreamReader.java:1943)
>      [java]     at com.ctc.wstx.sr.BasicStreamReader.handleNsAttrs(
> BasicStreamReader.java:3035)
>      [java]     at com.ctc.wstx.sr.BasicStreamReader.handleStartElem(
> BasicStreamReader.java:2934)
>      [java]     at com.ctc.wstx.sr.BasicStreamReader.nextFromTree(
> BasicStreamReader.java:2846)
>      [java]     at com.ctc.wstx.sr.BasicStreamReader.next(
> BasicStreamReader.java:1019)
>      [java]     at
> org.apache.tuscany.sca.assembly.xml.CompositeProcessor.read(
> CompositeProcessor.java:302)
>      [java]     ... 12 more
>      [java] Java Result: 1
> BUILD SUCCESSFUL
> Total time: 1 second
>
>
> Thanks!
>
>

Good catch!

It looks like it's not an issue with the Feed binding, but a more
general issue with a URL containing "&" in an XML attribute. Could you
try to escape the "&" as "&amp;"? like this:


http://mywiki/spaces/createrssfeed.action?types=page&amp;types=blogpost&amp;types=comment&amp;spaces=&amp;sort=modified&amp;title=Dashboard+RSS+Feed&amp;maxResults=15&amp;publicFeed=false&amp;os_authType=basic&amp;rssType=atom

Thanks

--
Jean-Sebastien


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Re: Feed binding (atom, rss) breaks when feed URL has parameters

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