In general DeltaSpike needs to verify, depending on the ClientWindowMode,
if the windowId is valid and sends a redirect.
Please come back if you know exactly where the redirect will be triggered -
AND - check the DS docs.
Am Fr., 5. Feb. 2021 um 15:07 Uhr schrieb DevNews :
> Hallo,
>
> in our web-application (JSF2.2 with DaltaSpike) we listen in a
> PhaseListener during RESTORE_VIEW on a special url. According to the
> HTTP-Post data we initialize a ViewAccessScoped bean and then redirect to a
> target url using ExternalContext.redirect(targeturl).
>
> This redirect results in two requests to the target url. Both requests
> have different instances of the ViewAccessScoped bean. For this reason the
> initialization data gets lost.
>
>
> How can a redirect be done without having two following requests?
>
>
> Before migrating from JSF1.2 to JSF2.2 and without using DeltaSpike there
> was only one request after redirecting. Threrefore we suppose that this
> effect results from deltaspike and the dswid parameter.
> For this reason we tried to extend the target url like:
> targeturl + „?dswid=“ + viewaccesscopedbean.getDswid()
> reading the dswid from deltaspike – WindowContext
>
> With this extension of the targeturl the behaviour is no more predictable.
> The redirect sometimes results in two sometimes it results in one request.
>
>
> Here our java-code:
>
>
> public class MyTestPhaseListener implements PhaseListener
> {
> /**
> * ViewAccessScoped Bean
> */
> @Inject
> MyVAccBean myVAccBean;
>
> @Override
> public void afterPhase(PhaseEvent event)
> {
> }
>
> @Override
> public void beforePhase(PhaseEvent event)
> {
> if (event.getPhaseId() == PhaseId.RESTORE_VIEW)
> {
> ExternalContext extCtx = event.getFacesContext().getExternalContext();
> HttpServletRequest request = (HttpServletRequest) extCtx.getRequest();
> String currReqUri = request.getRequestURI();
> if (currReqUri.indexOf("/initialPage.jsf") > 0)
> {
> myVAccBean.setValue("some value");
> redirectToTargetUrl(event, "targetPage.jsf");
> }
> }
> }
>
> private void redirectToTargetUrl(PhaseEvent event, String tagretUrl)
> {
> try
> {
> String encodedUrl = tagretUrl + "?dswid=" + myVAccBean.geDsWindowId();
> event.getFacesContext().getExternalContext().redirect(encodedUrl);
> }
> catch (Throwable e)
> {
> e.printStackTrace();
> }
> }
>
> @Override
> public PhaseId getPhaseId()
> {
> return PhaseId.ANY_PHASE;
> }
> }
>
>
>
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