Hi Ron,
I think this is safer:
import org.apache.jetspeed.request.RequestContext;
RequestContext rc = (RequestContext)
renderRequest.getAttribute(RequestContext.REQUEST_PORTALENV);
String remoteAddr = rc.getRequest().getRemoteAddr();
The property path you used,
"requestContext.servletRequest.request.request.remoteAddr", could be dangerous
as well, depending on servlet containers or some other factors.
Regards,
Woonsan
--- On Mon, 6/29/09, Ron McNulty <rmcnu...@xtra.co.nz> wrote:
> From: Ron McNulty <rmcnu...@xtra.co.nz>
> Subject: Re: Getting the client IP address - Solved
> To: "Jetspeed Users List" <jetspeed-user@portals.apache.org>
> Date: Monday, June 29, 2009, 6:50 AM
> Hi All
>
> The following code gets the client IP address using
> reflection. Not very pretty, but it works fine unless you
> install a security manager. It will also break if the
> Jetspeed implementation undergoes a major revision. But for
> now, in the absence of anything more elegant, it works.
>
> public static void printRemoteAddr(RenderRequest request)
> {
> try {
> String remoteAddr = (String)
> findField(request,
> "requestContext.servletRequest.request.request.remoteAddr");
> System.out.println("Remote addr: " +
> remoteAddr);
> } catch (Exception e) {
> e.printStackTrace();
> }
> }
>
> /**
> * Find the value of a field that you normally do not have
> access to using reflection.
> * The field may have a protected, package or private
> access modifier.
> *
> * @param obj The object instance to start with
> * @param fieldName The name of the field in
> "request.remoteAddr" format
> * @return The field value
> * @throws IllegalArgumentException Field does not exist
> * @throws IllegalAccessException Security manager threw
> you out
> */
> public static Object findField(Object obj, String
> fieldName)
> throws IllegalArgumentException, IllegalAccessException {
> // Step through the path to the field
> String[] tokens = fieldName.split("\\.");
> for (String token : tokens) {
> // Iterate up the inheritance
> hierarchy
> boolean found = false;
> Class<?> clazz =
> obj.getClass();
> while (clazz != null &&
> !found) {
> try {
> Field field =
> clazz.getDeclaredField(token);
> found = true;
>
> field.setAccessible(true);
> obj =
> field.get(obj);
> } catch (NoSuchFieldException
> nsfex) {
> clazz =
> clazz.getSuperclass();
> }
> }
> if (!found)
> throw new IllegalArgumentException(token + "
> is not a field in class " + obj.getClass().getName());
> }
> return obj;
> }
>
>
>
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