I have a custom tag that takes a collection as one of it's parameters. I'd like to be
able to give the name of an attribute (a String) as the value and have the tag find
the attribute from the pageContext. This doesn't seem like it should be too difficult.
I have setters that look like this in my tag...
protected Collection accessList;
public void setAccessList(String accessList) {
Object o = pageContext.findAttribute(accessList);
if (o instanceof Collection) {
this.accessList = (Collection)o;
}
}
public void setAccessList(Collection accessList) {
this.accessList = accessList;
}
...and the tag looks like this on the jsp page...
<jsp:useBean id="accessList" scope="request" class="java.util.Vector" />
<mpi:accessList id="access" accessList="accessList" ... >
...
</mpi:accessList>
... but I keep getting errors like this...
org.apache.jasper.JasperException: Unable to convert string 'accessList' to class
java.util.Collection for attribute accessList: java.lang.IllegalArgumentException:
Property Editor not registered with the PropertyEditorManager
at
org.apache.jasper.runtime.JspRuntimeLibrary.getValueFromPropertyEditorManager(JspRuntimeLibrary.java:749)
If I use a run time value in the tag I don't get the error...
<jsp:useBean id="accessList" scope="request" class="java.util.Vector" />
<mpi:accessList id="access" accessList='<%= accessList %> ... >
...
</mpi:accessList>
So I have a workaround for the problem, but I'd still like to understand why the first
example doesn't work when everything I've read says that it should.
I'm using Tomcat 4.1.12 on NT 4.0 (development server) with j2sdk1.4.0_01.
Thanks
Cindy
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