yep, thanks. It really works, but i don't know why to do this. Can you
explain it or post some links for me to learn a little deep.

cheers,

On Sep 12, 3:13 am, "Jason (Google)" <apija...@google.com> wrote:
> If you're subclassing SimpleFormController, you can also override the
> initBinder method in your custom classes directly. e.g.:
>
> @Override
> protected void initBinder(HttpServletRequest request,
> ServletRequestDataBinder binder) throws Exception {
>   binder.registerCustomEditor(String.class, new StringTrimmerEditor(false));
>   binder.registerCustomEditor(Boolean.class, new
> CustomBooleanEditor(false));
>   binder.registerCustomEditor(Long.class, new CustomNumberEditor(Long.class,
> true));
>
> }
>
> - Jason
>
>
>
> On Thu, Sep 10, 2009 at 5:00 AM, xueqiang.mi <allo...@gmail.com> wrote:
>
> > Thanks.
> > The problem I encountered is caused by the Spring form tag, I have
> > fixed it.
> > If you want to use form tag, you must override the  initBinder method
> > of WebBindingInitializer, otherwise you will get a error:
> > org.springframework.web.servlet.tags.RequestContextAwareTag
> > doStartTag: access denied (java.lang.RuntimePermission getClassLoader)
> > java.security.AccessControlException: access denied
> > (java.lang.RuntimePermission getClassLoader)
> > ......
> > Nested in org.springframework.web.util.NestedServletException: Request
> > processing failed; nested exception is java.lang.ClassCastException:
> > java.security.AccessControlException cannot be cast to
> > javax.servlet.ServletException:
> > java.lang.ClassCastException: java.security.AccessControlException
> > cannot be cast to javax.servlet.ServletException
>
> > You should write your own WebBindingInitializer class
> > {code}
> > public class TheFocusBindingInitializer implements
> > WebBindingInitializer {
>
> >       �...@override
> >        public void initBinder(WebDataBinder binder, WebRequest request) {
> >                binder.registerCustomEditor(String.class,
> >                                new StringTrimmerEditor(false));
> >        }
> > }
> > {code}
> > and then inject it into the AnnotationMethodHandlerAdapter by the
> > following configuration:
> > {xml}
> > <bean
>
> > class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandl 
> > erAdapter">
> >        <property name="webBindingInitializer">
> >                <bean
> > class="com.appspot.thefocus.web.TheFocusBindingInitializer" />
> >        </property>
> > </bean>
> > {xml}
> > On 9月10日, 下午4时13分, Loïc Talbot <loic.tal...@gmail.com> wrote:
> > > Hi,
> > > I've tried successfully spring mvc with this tutorial (Flex, graniteDS,
> > > springMVC) :
> >http://graniteds.blogspot.com/2009/04/graniteds-20-on-google-app-engi...
>
> > > Moreover Spring MVC is compatible with GAE according to this  :
> >http://groups.google.com/group/google-appengine-java/web/will-it-play...
>
> > > You should find a more verbose and meaningful error in the console log
> > > underhttps://appengine.google.com/
> > > The stack trace should be there.
>
> > > Loïc
>
> > > 2009/9/10 xueqiang.mi <allo...@gmail.com>
>
> > > > Have anyone used Spring MVC framework on GAE? My project runs well on
> > > > my pc, but after uploading on the GAE server, it doesn't work. A error
> > > > comes out:
>
> > > > Error: Server Error
>
> > > > The server encountered an error and could not complete your request.
> > > > If the problem persists, please report your problem and mention this
> > > > error message and the query that caused it.
>
> > > >http://alloyer.appspot.com
>
> > > > Can anyone help me here?
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