Help on xml:xpath-router

[Gary Russell]

There's also

filename-generator-expression="headers['jms_messageId'].replace('<','').replace('>','') + '.bad'"

[nuvola]

Hi Gary,

thanks for the provided example !

I'm checking the syntax because I got an error:

Offending resource: class path resource [applicationContext.xml]; nested exception is org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException: Line 62 in XML document from file [C:\projects\maven\workspace\myListener\target\test-classes\myListener-context.xml] is invalid; nested exception is org.xml.sax.SAXParseException: The value of attribute "filename-generator-expression" associated with an element type "null" must not contain the '<' character.

Thanks and regards
nuvola

[Gary Russell]

Try '&lt;' and '&gt;' for '<' and '>'

[nuvola]

ciao Gary,

Your hint is perfect!

... I'm also trying to add a timestamp in the filename ...

    <file:outbound-channel-adapter id="unknownMessageTypeChannel" directory="file:${unknownMessageType.directory}"
       filename-generator-expression="'${myQueue.jndiName}' + '_' + headers['jms_messageId'].replace('&lt;','').replace('&gt;','').replace(':','_') + '_' + new SimpleDateFormat('ddMMyyyy_HHmmss').format(new Date()) + '.xml'"/>

The error is:

Caused by: org.springframework.expression.spel.SpelEvaluationException: EL1003E:(pos 104): A problem occurred whilst attempting to construct an object of type 'SimpleDateFormat' using arguments '(java.lang.String)'

I think it's wrong using ' instead of " within --> new SimpleDateFormat('ddMMyyyy...
I'm trying different tries ...

Thanks and regards
nuvola

[Gary Russell]

You need to fully qualify 'java.text.SimpleDateFormat' and 'java.util.Date' so SpEL can find the classes.

[nuvola]

Again thanks!
It works!

<file:outbound-channel-adapter id="unknownMessageTypeChannel" directory="file:${unknownMessageType.directory}"
       filename-generator-expression="'${myQueue.jndiName}' + '_' + headers['jms_messageId'].replace('&lt;','').replace('&gt;','').replace(':','_') + '_' + new java.text.SimpleDateFormat('ddMMyyyy_HHmmss').format(new java.util.Date()) + '.xml'"/>

File generated: jms.MyQueue_ID_240478.1335483156383.0_27042012_013 254.xml

[nuvola]

Ciao Gary,

I'm adding an errorChannel as in the log I see

27.apr.2012 13:54:26,255 - (MY LISTENER SERVICE) (main) [INFO  ]-[DefaultConfiguringBeanFactoryPostProcessor(120 )] - No bean named 'errorChannel' has been explicitly defined. Therefore, a default PublishSubscribeChannel will be created.

I added in my applicationContext.xml

<stream:stderr-channel-adapter channel="errorChannel" append-newline="true" />

but the above INFO message is still there. I will open a new post on this specific topic for getting some best practices as it is not related directly with current thread on "xml:xpath-router"

Regards
nuvola

[Gary Russell]

Just add

<int:channel id="errorChannel"/>

if you want to avoid that message; but it doesn't hurt anything.

[bwfrieds]

Ahh... change resolution-required to "false". That's what triggers sending messages for unresolved channels to the default-output-channel.

Thank you, Gary! This was critical as I was trying to hack a solution to not lose unsupported message payloads.