> instead of:
> property="id"
> property="description"
>
> use:
> property="purposes[1].id"
> property="purposes[1].description"
That makes sense! I made the changes to the JSP file and also
added indexed getter/setter to the form bean.
public class LoansForm extends ActionForm {
private LoansPurpose[] purposes = null;
public LoanPurpose[] getPurposes()
{return purposes;}
public void setPurposes( LoanPurpose[] v )
{purposes = v;}
public LoanPurpose getPurposes( int idx )
{return purposes[idx];}
public void setPurposes( int idx, LoanPurpose v )
{purposes[idx] = v;}
public void reset(ActionMapping mapping,
HttpServletRequest request) {purposes = null;}
}
But now when I submit the "Save" I'm getting an exception
javax.servlet.ServletException: BeanUtils.populate
...
----- Root Cause -----
java.lang.reflect.InvocationTargetException
at sun.reflect.GeneratedMethodAccessor16.invoke(Unknown
Source)
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:324)
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:475)
at
org.apache.commons.beanutils.PropertyUtils.getIndexedProperty(PropertyUtils.java:410)
at
org.apache.commons.beanutils.PropertyUtils.getNestedProperty(PropertyUtils.java:749)
at
org.apache.commons.beanutils.PropertyUtils.getProperty(PropertyUtils.java:780)
at
org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:793)
at
org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:726)
at
org.apache.struts.util.RequestUtils.populate(RequestUtils.java:978)
Caused by: java.lang.NullPointerException
at
com.illuminat.cml.LoansForm.getPurposes(LoansForm.java:1420)
... 49 more
(obviously, I've trimmed the exception report)
Line 1420 of LoansForm.java is the indexed getter. So my purposes
array is null and I'm trying to get the value at a particular index
(idx=3 in this test run).
The array is null because I set it to that in the reset() method.
That's what I'm supposed to do though, isn't it?
How can I "know" to allocate the array and what size it should be?
I'm missing something here! For instance, I'm executing a "Save"
so why is the indexed getter being called and not the indexed
setter?
> This should get you started...
It did indeed, and I thank you for that. Unfortunately, it has
raised more questions and I'm at a loss as to how to proceed!
Thanks again,
Kevin
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