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From "Alvarado, Juan (c)" <Juan_Alvar...@NielsenMedia.com>
Subject RE: DynaActionForm problem -> IllegalArgumentException: No bean specified
Date Tue, 10 Dec 2002 16:32:10 GMT
I don't believe DynaActionForm supports java.util.Collection.

Please correct me if I'm wrong.

Thanks

-----Original Message-----
From: Jerome Jacobsen [mailto:jerome.jacobsen@gentootech.com]
Sent: Tuesday, December 10, 2002 11:27 AM
To: Struts User
Subject: DynaActionForm problem -> IllegalArgumentException: No bean
specified


Oh Struts masters,

I get an exception when Struts populates my DynaActionForm from request
parameters.  With DEBUG logging on I see the following:

INFO  org.apache.struts.action.RequestProcessor  - Processing a 'POST' for
path '/changeLocale' DEBUG org.apache.struts.util.RequestUtils  -  Looking
for ActionForm bean instance in scope 'session' under attribute key
'localeForm' DEBUG org.apache.struts.util.RequestUtils  -  Recycling
existing DynaActionForm instance of type 'localeForm' DEBUG
org.apache.struts.util.RequestUtils  -  -->
DynaActionForm[dynaClass=localeForm,locales={en_US,es_MX},selectedLocale=en_
US] DEBUG org.apache.struts.action.RequestProcessor  -  Storing ActionForm
bean instance in scope 'session' under attribute key 'localeForm' DEBUG
org.apache.struts.action.RequestProcessor  -  Populating bean properties
from this request DEBUG org.apache.commons.beanutils.BeanUtils  -
BeanUtils.populate(DynaActionForm[dynaClass=localeForm,locales=<NULL>,select
edLocale=<NULL>], {selectedLocale.localeString=[Ljava.lang.String;@d0})
DEBUG org.apache.commons.beanutils.BeanUtils  -
setProperty(DynaActionForm[dynaClass=localeForm,locales=<NULL>,selectedLocal
e=<NULL>], selectedLocale.localeString, [es_MX]) DEBUG
org.apache.commons.beanutils.BeanUtils  -     Target bean = null DEBUG
org.apache.commons.beanutils.BeanUtils  -     Target name = localeString

Looks like RequestUtils is getting the correct DynaActionForm from the
session (logs 2,3,4).  But then I don't understand why the BeanUtils logs
show the properties to be NULL (logs 7,8,9).

My DynaActionForm contains two properties.  One is a JavaBean and the other
is a Collection of JavaBeans.

<form-bean name="localeForm" type="org.apache.struts.action.DynaActionForm"
dynamic="true">
 <form-property name="selectedLocale" type="com.blah.LocaleBean"/>
 <form-property name="locales" type="java.util.Collection"/>
</form-bean>

The element type of property locales is also com.blah.LocaleBean.

com.blah.LocaleBean is very simple.  It contains only one property called
localeString which is a java.lang.String.

Am I doing something wrong???

Environment:

Struts 1.1b2
BeanUtils 1.5 (also tried 1.3)
Tomcat 4.0.6


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