在JSF中通过URL传递参数

Question

I need to go to page by selecting data table row. Using ajax event have some problems.

FacesContext context = FacesContext.getCurrentInstance();
NavigationHandler navigationHandler = context.getApplication().getNavigationHandler();
navigationHandler.handleNavigation(context, null, "/views/questionnaires/viewDetails.xhtml?faces-redirect=true&questionnaireId=" + 1);

But also i need to pass parameter to target page bean.

@ManagedProperty(value = "#{param.questionnaireId}")
private Long questionnaireId;

And it's not working. How to do it correctly?

Answer 1

The most obvious thing that needs to be done is that you need to include includeViewParams=true in that URL for the parameter to survive the redirect. So you'll have:

  navigationHandler.handleNavigation(context, null, "/views/questionnaires/viewDetails.xhtml?faces-redirect=true&includeViewParams=true&questionnaireId=" + 1);

Another concern might be the scope of the target bean. Per JSF spec, @ViewScoped beans are not valid targets for #param bean injection