Hi all,
I’m experimenting with Struts Layout and having a problem with the
<layout:checkboxes> tag. The jsp I’m replacing uses the multibox tag
backed by a DynaActionForm with a String[] property and works fine. But
with Struts Layout, the <layout:checkboxes> grabs the collection
properly out of the request and populates the form with checkboxes, but
I get an NPE on form submit. I’ve wracked my brains and can’t diagnose
the problem. Any hints appreciated!
Here’s the form:
<layout:form action="/newteamsave.do?method=newteamsave"
focus="teamname" key="newteam.title" styleClass="FORM">
…Snip…
<layout:checkboxes key="prompt.selectcats" property="cats">
<layout:options collection="categories"
property="categoryname"/>
</layout:checkboxes>
<layout:formActions>
<layout:submit property="submit" value="Submit"/>
<layout:reset/>
</layout:formActions>
</layout:form>
And here’s the NPE. I’ve tried my own form class with an ArrayList()
property instead…still get the same exception.
java.lang.NullPointerException
at
org.apache.commons.beanutils.PropertyUtils.setIndexedProperty(PropertyUt
ils.java:1458)
at
org.apache.commons.beanutils.BeanUtils.setProperty(BeanUtils.java:928)
at
org.apache.commons.beanutils.BeanUtils.populate(BeanUtils.java:729)
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