How to redirect back to the user desire access page after user login?

Question

Before user login, if type xxx.detail.jsf, it will redirect to the login page let user login. This task has been done already. How can I make it to redirect back to the xxx.detail.jsf after the user successfull login?

I'm using Eclipse Indigo, Tomcat 7 and Mojarra 2.0.3.

Answer 1

At the point when you're redirecting to the login page, you need to save the current request URI. You're likely using a Filter to perform the login check and the redirect. In that case, you can use HttpServletRequest#getRequestURI() to obtain the current request URI:

String requestURI = request.getRequestURI();

You could either pass it as a request parameter in the redirect URL or store it in the session. Passing as a request parameter is the safest:

response.sendRedirect(request.getContextPath() + "/login.jsf?from=" + URLEncoder.encode(requestURI, "UTF-8"));

In the bean associated with the login page, you could set it as a managed property or a view parameter. Let's assume that the bean is view scoped so that you can perform nice ajax actions/validations and like. In that case, the view parameter is the only neat way:

<f:metadata>
    <f:viewParam name="from" value="#{login.from}" />
</f:metadata>

Then, when the real login succeeds, you can redirect to that URI by ExternalContext#redirect():

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

    FacesContext.getCurrentInstance().getExternalContext().redirect(from);
}

(if necessary supply a default target for the case that from is null)