Map based Action Form

[Brian Quinn]

I am trying to create a dynamic form on my web app, and thought the map based action form would be my best choice (I am wedded to struts). I will be putting up x amount of properties, some single select, some multiple select. However, when I write my unit tests , I am seeing that struts will not put a String[] into a mapped property - it will only take the first value - here's my test code:

   
 
public void testMapHasDyamicContent() throws Exception {
addRequestParameter("value(username)","testUser");
addRequestParameter("value(oplanId)","oplanId");
String[] selectedValues = new String[]{"A,US Army","F,US Air Force"};
addRequestParameter("value(by Service Code)", selectedValues);

actionPerform();
JspFilterForm form= (JspFilterForm)request.getSession().getAttribute("JspOffloadForm");
Map resultMap=form.getFilters();
assertTrue(resultMap.containsKey("username"));
assertTrue(resultMap.containsKey("oplanId"));
assertTrue(resultMap.containsKey("by Service Code"));
String[] results = (String[]) resultMap.get("by Service Code");
assertEquals(2,results.length);

}
 

I get a ClassCast Exception on this line:
String[] results = (String[]) resultMap.get("by Service Code");

Any ideas what causes this or how I can build a form that I won't know the properties til runtime ?