I¹m getting a freemarker error when I use a s:checkboxlist tag and the
array which contains my item values is empty.
When I had a look at the stack trace it¹s pointing me to the following
error:
Caused by: java.lang.NullPointerException
at org.apache.struts2.util.ContainUtil.contains(ContainUtil.java:96)
When I had a look at the source for ContainUtil, I noticed that the equals
expression is arse about.
if (obj1.getClass().isArray()) {
for (int i = 0; i < Array.getLength(obj1); i++) {
Object value = null;
value = Array.get(obj1, i);
(Error is thrown here) if (value.equals(obj2)) {
//log.debug("obj1 is an array and contains obj2");
return true;
}
}
Ideally the expression would be best rewritten if(obj2.equals(value)) as we
have already tested obj2 for nullness at the start of the contains method.
Now the hard part, I don¹t want to have to recompile the struts code and was
hoping there was a simple workaround.
All suggestions considered at this point.
TIA
Z.
