Exceptions thrown in prepare() method ignored

[Richard Wallace <rw...@thewallacepack.net>]

Hello,

I have an action with a prepare method.  The prepare method loads some 
objects to operate on for the editing, so I have the interceptor stack 
setup with the params, prepare, params interceptors.  My prepare method is

    public void prepareCreate () {
        if (m_projectId == null) {
            throw new IllegalArgumentException ("Project ID is missing.");
        }
        m_project = m_projectService.getProject (m_projectId);
        if (m_project == null) {
            throw new IllegalArgumentException ("No project with the 
provided ID exists.");
        }

So, if no project id is set or it's not a valid id, I want to show an 
error page.  Problem is the exception is caught and a warning is logged

java.lang.reflect.InvocationTargetException
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at 
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
        at 
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:585)
        at 
com.opensymphony.xwork2.interceptor.PrefixMethodInvocationUtil.invokePrefixMethod(PrefixMethodInvocationUtil.java:111)
        at 
com.opensymphony.xwork2.interceptor.PrepareInterceptor.intercept(PrepareInterceptor.java:103)
        at 
com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
        at 
com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:218)
        at 
com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
        at 
com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)

With WebWork 2.2 the exception would be handled the same way as an 
exception during action execution, so you could use the 
<global-exception-mapping> and <global-results> to send users to an 
error page.

Is this something that was overlooked or is there an alternate way to 
accomplish this?

Thanks,
Rich

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