JSF how to force hard reload of current page

问题

I use JSF 1.2. I have a view in which I have a h:commandButton with the following action:

#{myBean.saveSomeData}

When I click on the button, I want to save some data and like the data that are saved can change the display of my view, i would like to force hard reload (like a CTRL+F5 in my browser for example) of my page.

To do that, I thought to this code :

public void saveSomeData() {
            ... Save some data ... 

        FacesContext context = FacesContext.getCurrentInstance();
        String viewId = context.getViewRoot().getViewId();
        ViewHandler handler = context.getApplication().getViewHandler();
        UIViewRoot root = handler.createView(context, viewId);
        root.setViewId(viewId);
        context.setViewRoot(root);
}

But when i do that, the tree components of my view is not reloaded.

So, I don't know how to do that reload. Someone would have any idea about the way to do that ?

Thanks by advance for your help.

Sylvain.

回答1:

Add no-cache headers to the response so that the browser never caches the page. You can do this with a Filter which is mapped on the url-pattern of interest. For example *.jsf or just on the FacesServlet. Let the Filter set the following headers in the doFilter() method:

response.setHeader("Cache-Control", "no-cache, no-store, must-revalidate"); // HTTP 1.1.
response.setHeader("Pragma", "no-cache"); // HTTP 1.0.
response.setDateHeader("Expires", 0); // Proxies.

来源：https://stackoverflow.com/questions/5301530/jsf-how-to-force-hard-reload-of-current-page

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