Question

Im using Mojarra 2.1.3, NetBeans 7.0.1, Primefaces 3.2.

I have a few dynamic xhtml pages backed by ViewScoped backing beans in my application. Each of the pages has p:dataTable which display List<> from the backing bean. The problem occurs when a user navigate to a different page with the details of each item in the datatable. Upon browing the detail information, a user will most likely hit on the browser back button to return to the list. And so I implemented a filter like this in my application.

    @Override
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
        throws IOException, ServletException {
    HttpServletRequest httpReq = (HttpServletRequest) request;
    HttpServletResponse httpRes = (HttpServletResponse) response;
    if (!httpReq.getRequestURI().startsWith(httpReq.getContextPath() + ResourceHandler.RESOURCE_IDENTIFIER)) { // Skip JSF resources (CSS/JS/Images/etc) 
        httpRes.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1. 
        httpRes.setHeader("Pragma", "no-cache"); // HTTP 1.0. 
        httpRes.setDateHeader("Expires", 0); // Proxies. 
    }
    chain.doFilter(request, response);
}

But I have one problem, as explained here: How to move user to timeout page when session expires, if user click on browser back button the browser should instead send a fullworthy fresh HTTP request to the server.

But in my case it didn’t. I see instead the ubiquituous Webpage has expired page which is in my opinion not a user friendly experience. What I want is NOT for it to load from browser cache but instead create a fresh request to the server and display the right page (Not the Webpage has Expired Page). Is it possible.

Please help. Thanks a lot.

Answer 1

This can happen if the navigation has taken place by a POST request instead of a GET request.

You should make sure that page-to-page navigation always take place by a GET request. E.g.

<p:dataTable value="#{bean.items}" var="item">
    <p:column>
        <h:link value="detail" outcome="detail">
            <f:param name="id" value="#{item.id}" />
        </h:link>
    </p:column>
</p:dataTable>