Question

For instance, say I want to run some logic and then hit /page.html#elementid

<h:commandLink action="#{myBean.action}" value="Go"/>

and

public String action()
{
   // Some logic here
   return "/page.xhtml#elementid";
}

I cannot find any examples regarding this, and wonder if there is a solution?

Answer 1

The #elementid URI fragment has to be sent to the client side as well. This is not happening here. You’re basically performing a server-side forward. You should be performing a client-side redirect instead.

public void action() throws IOException {
    // ...

    ExternalContext ec = FacesContext.getCurrentInstance().getExternalContext();
    ec.redirect(ec.getRequestContextPath() + "/page.xhtml#elementid");
}

---

Alternatively, you could conditionally render some JavaScript to set the URI fragment:

public String action() {
    // ...

    hash = "elementid";
    return "/page.xhtml";
}

with in page.xhtml:

<h:outputScript target="body" rendered="#{not empty bean.hash}">
    location.hash = "#{bean.hash}";
</h:outputScript>

---

The <h:link> by the way has explicit support for URI fragments.

<h:link value="Go to page" outcome="page" fragment="elementid" />

It however fires a GET request, so any preinitializing business actions needs to be performed in the bean associated with the target page based on (post)constructor or <f:viewParam>.