bug? reading parameters from f:param + commandbutton results

[drcolossos]

<h:form>
<h:commandButton value="klick" action="#{genretest.getTest}">
 <f:param value="test" name="test" />
</h:commandButton>

</h:form>

and the bean that handles the method

public String getTest()
 {
 FacesContext ct = FacesContext.getCurrentInstance();

 String s= ct.getExternalContext().getRequestParameterMap().get("test");

 System.out.println("TEST TEST TEST: " + s);

 return "test";
 }

"s" always displays as null... i read that this is a bug in jboss but checked out the bugtracker and it said that these bugs were fixed in old versions...

jdk 1.6_13
eclipse 3.4.2
jboss 5.1.0.CR1

all the other features i need work propery (like jpa and stuff) there is no error message or similar, just the null value. happens in 5.0.1.GA too

help or comments on this (bug?) very appreciated

[drcolossos]

anyone?

or am i in the wrong section of the board?

[wolfgangknauf]

Hi,

as far as I know, "f:param" values cannot be found in the request parameters. This is a problem of the JSF implementation (JBoss >= 4.2 use the Sun RI 1.2), so you might better ask your question in JSF forums.

Best regards

Wolfgang

[drcolossos]

ok good to know, thank you!

[wolfgangknauf]

By the way: if you need to access request parameters, I would advice you to place them in "h:inputHidden" fields, not in "f:param".

Another important thing to know: the name of the request parameter will contain all the IDs of its "container". So, in your situation, it will be "formid:test", not "test". If your form is in a table, the parameter name will be "tableid:rownumber:formid:test" and so on.

Best regards

Wolfgang

[drcolossos]

thanks for the follow up....

i was able to solve the problem.. had wrong infos on how to archive the desired goal..

http://balusc.blogspot.com/2006/06/communication-in-jsf.html#PassingGETParametersFromJSFToBackingBeans

if anyone has similar problems points out exactly the differences between a lot of different parameter handlings

anyway, thanks for your comment, wolfgang

best regards!