Hi Laurie Thanks for your help, but I still don't seem to be making much progress on this...
Just to clear up the confusion - perhaps it wasn't a good idea for me to include the link to the Sun forum, as my problem is not related to changing the JVM. I am running v 1.4, and always have been, so suspect that is not the source of the problem. As for BeanInfo classes, I don't have any! Could you expand upon your comment "Bear in mind that this might be caused by changes elsewhere, such as a super-class" - I've looked in all the superclasses of the bean whose property I'm trying to access and don't see anything suspicious. Could you perhaps give an example of what might cause a problem in a superclass? Many thanks again for your help Steve --- Laurie Harper <[EMAIL PROTECTED]> wrote: > Stephen Hartley wrote: > > I have a run-time problem with a struts-based JSP. > > > Interesting thing is that this code has been > working > > for more than a year with no problems, but now > errors > > with HTTP 500 and JspException: > "PropertyDescriptor: > > internal error while merging PDs: type mismatch > > between read and write methods". See full stack > trace > > below. > > > > I've been searching around the list archives and > note > > Brian McClung has posted the same problem (see > > postings on 2004-03-24 21:58:11 GMT and 2004-03-23 > > 21:50:43 GMT) but as far as I can see there > doesn't > > seem to be an answer for this one. Likewise on > the > > Sun Java forum - see > > > http://forum.java.sun.com/thread.jspa?threadID=632668&tstart=90 > > The difference between JDK 1.3 and 1.4 is a change > in the reflection > semantics; in 1.3 you could make a property both > read-only and > write-only, which clearly doesn't make sense but > worked anyway. 1.4 > changed the introspection behaviour in this case, > which might be what > you're seeing (assuming, since you referenced that > URL, that you're > talking about a difference in your code's behaviour > between the two JVMs). > > > I've checked that the setter and getter accept and > > return the correct types OK. This is to be > expected > > really, because the code used to work and I > haven't > > changed it [intentionally!]....! > > Bear in mind that this might be caused by changes > elsewhere, such as a > super-class or, more likely, a related BeanInfo > class. Without seeing > your Javabean and related BeanInfo classes I can't > say anything > definitive, but check that *everything* affecting > the property > descriptors, including BeanInfo classes, is as it > should be. > > L. > > > > > Can anyone give me some helpful pointers on this > one? > > > > Many thanks, > > > > Steve > > > > > > > > > > > > javax.servlet.jsp.JspException: Exception > forwarding > > for name loginSecured: > > javax.servlet.ServletException: Exception > accessing > > property userAccountVO. > > forcePwdChange for bean userSession: > java.lang.Error: > > PropertyDescriptor: > > internal error while merging PDs: type mismatch > > between read and write methods > > > > at > > > org.apache.struts.taglib.logic.ForwardTag.doEndTag(ForwardTag.java:173) > > > > at _index._jspService(index.jsp:5) > > > > [/index.jsp] > > > > > > > > > ___________________________________________________________ > > > How much free photo storage do you get? Store your > holiday > > snaps for FREE with Yahoo! Photos > http://uk.photos.yahoo.com > > > --------------------------------------------------------------------- > To unsubscribe, e-mail: > [EMAIL PROTECTED] > For additional commands, e-mail: > [EMAIL PROTECTED] > > ___________________________________________________________ To help you stay safe and secure online, we've developed the all new Yahoo! Security Centre. http://uk.security.yahoo.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
