On Wed, Dec 21, 2011 at 7:50 PM, Pablo Díaz <inspd...@gmail.com> wrote:
> Thank you for your answer but I think this is only correct when you are
> returning a CharSequence, what's happen when you like returning Image, for
> example?
>
If you need to return an Image then definitely you don't need to extend a Page.
See solution 1) I suggested - using IResource.
> El 21/12/11 10:33, Martin Grigorov escribió:
>
>> The problem with EmptyRequestHandler is that the previous response is
>> reset and an empty is written to the client.
>>
>> There are several solutions for your problem:
>> 1) use a IResource instead of a Page. You don't use components anyway.
>> See wicketinaction.com/2011/07/wicket-1-5-mounting-resources/ for more
>> info.
>>
>> 2) Use a WebPage that implements
>> org.apache.wicket.markup.IMarkupResourceStreamProvider and
>> org.apache.wicket.markup.IMarkupCacheKeyProvider
>> The first interface is needed to generate the markup dynamically. E.g.
>> : return new StringResourceStream(yourDataReturnedFromHttpClient)
>> The second should return "null" in #getCacheKey() to not cache the
>> result from the first. I.e. Wicket will ask IMarkupCacheKeyProvider
>> for new data for each request.
>>
>> 3) Do what Igor suggested with EmptyRequestHandler but use
>> TextRequestHandler(yourDataReturnedFromHttpClient) instead.
>>
>> On Tue, Dec 20, 2011 at 10:11 PM, Igor Vaynberg<igor.vaynb...@gmail.com>
>> wrote:
>>>
>>> what is the stack trace look like now?
>>>
>>> also, no need to extend a webpage, why not just impplement
>>> IRequestHandler directly and mount it somewhere so you can construct
>>> urls to it...
>>>
>>> -igor
>>>
>>> On Tue, Dec 20, 2011 at 11:24 AM, Pablo Díaz<inspd...@gmail.com> wrote:
>>>>
>>>> I've done that, but I get the same result :(
>>>>
>>>> El 20/12/11 20:18, Igor Vaynberg escribió:
>>>>
>>>>> (httpservletresponse)getresponse().getcontainerresponse()
>>>>>
>>>>> -igor
>>>>>
>>>>> On Tue, Dec 20, 2011 at 10:58 AM, Pablo Díaz<inspd...@gmail.com>
>>>>> wrote:
>>>>>>
>>>>>> Ok, but How I can get the httpservletresponse object to write in it?
>>>>>> I'm
>>>>>> extending the WebPage class ...
>>>>>>
>>>>>> El 20/12/11 19:26, Igor Vaynberg escribió:
>>>>>>
>>>>>>> try writing directly into httpservletresponse instead of wicket's
>>>>>>> response. there is a bug fix for this in the upcoming release....
>>>>>>>
>>>>>>> -igor
>>>>>>>
>>>>>>> On Tue, Dec 20, 2011 at 10:03 AM, Pablo Díaz<inspd...@gmail.com>
>>>>>>> wrote:
>>>>>>>>
>>>>>>>> Ok, thank you, I'm not getting the error if I use your code, but I'm
>>>>>>>> not
>>>>>>>> able to gets the response (I always get a blank image, when I must
>>>>>>>> get
>>>>>>>> a
>>>>>>>> map).
>>>>>>>>
>>>>>>>> I mean, I only like getting the request done from someone and check
>>>>>>>> if
>>>>>>>> he
>>>>>>>> has enough privileges to do some operation Then, I change some
>>>>>>>> parameters
>>>>>>>> depends on his role he can.
>>>>>>>>
>>>>>>>> My code is like this:
>>>>>>>>
>>>>>>>> public class ProxyAction extends WebPage {
>>>>>>>>
>>>>>>>> public ProxyAction(PageParameters parameters){
>>>>>>>> URL url = null;
>>>>>>>> Logger logger = Logger.getLogger(ProxyAction.class);
>>>>>>>> HttpURLConnection con = null;
>>>>>>>> Response response = getResponse();
>>>>>>>> ByteArrayBuffer bab = new ByteArrayBuffer();
>>>>>>>>
>>>>>>>> try {
>>>>>>>> String mapserverUrl =
>>>>>>>>
>>>>>>>>
>>>>>>>>
>>>>>>>> "http://localhost/cgi-bin/mapserv?mode=map&map=/var/local/mapserver/inveco/map/client_draw.map&layers=provincias";;
>>>>>>>> Iterator<String> it = claves.iterator();
>>>>>>>> while(it.hasNext()){
>>>>>>>> String clave = (String) it.next();
>>>>>>>> mapserverUrl= mapserverUrl + "&"+ clave+"=";
>>>>>>>> List<StringValue> valores =
>>>>>>>> parameters.getValues(clave);
>>>>>>>> for(int i=0; i<valores.size(); i++){
>>>>>>>> mapserverUrl = mapserverUrl+valores.get(i)+" ";
>>>>>>>> }
>>>>>>>> }
>>>>>>>>
>>>>>>>> url = new URL(mapserverUrl);
>>>>>>>> con = (HttpURLConnection) url.openConnection();
>>>>>>>>
>>>>>>>> InputStream istream = con.getInputStream();
>>>>>>>> byte[] b = new byte[1];
>>>>>>>> for(;;){
>>>>>>>> if(istream.read(b) == -1)
>>>>>>>> break;
>>>>>>>> bab.write(b);
>>>>>>>> }
>>>>>>>>
>>>>>>>> response.write(bab.getRawData());
>>>>>>>> getRequestCycle().replaceAllRequestHandlers(new
>>>>>>>> EmptyRequestHandler());
>>>>>>>>
>>>>>>>> } catch (MalformedURLException e) {
>>>>>>>> logger.error(e.getMessage());
>>>>>>>> } catch (IOException e) {
>>>>>>>> logger.error(e.getMessage());
>>>>>>>> }
>>>>>>>> //this.getRequestCycle().setResponse(response);
>>>>>>>> }
>>>>>>>> }
>>>>>>>> El 20/12/11 18:17, Igor Vaynberg escribió:
>>>>>>>>
>>>>>>>>> in the future, start with the error :)
>>>>>>>>>
>>>>>>>>> you have to tell wicket that it should not render the page after
>>>>>>>>> you
>>>>>>>>> have written the data out...
>>>>>>>>>
>>>>>>>>> output.write(data);
>>>>>>>>> getrequestcycle().replaceallrequesthandlers(new
>>>>>>>>> EmptyRequestHandler());
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> -igor
>>>>>>>>>
>>>>>>>>>
>>>>>>>>>
>>>>>>>>> On Tue, Dec 20, 2011 at 8:54 AM, Pablo Díaz<inspd...@gmail.com>
>>>>>>>>> wrote:
>>>>>>>>>>
>>>>>>>>>> Because when I try to write to response I get's this error:
>>>>>>>>>>
>>>>>>>>>> ERROR - DefaultExceptionMapper - Unexpected error occurred
>>>>>>>>>> java.lang.IllegalStateException: Can't call write(CharSequence)
>>>>>>>>>> after
>>>>>>>>>> write(byte[]) has been called.
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.protocol.http.BufferedWebResponse.write(BufferedWebResponse.java:465)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.MarkupContainer.renderNext(MarkupContainer.java:1525)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.MarkupContainer.renderAll(MarkupContainer.java:1638)
>>>>>>>>>> at org.apache.wicket.Page.onRender(Page.java:904)
>>>>>>>>>> at
>>>>>>>>>> org.apache.wicket.markup.html.WebPage.onRender(WebPage.java:140)
>>>>>>>>>> at
>>>>>>>>>> org.apache.wicket.Component.internalRender(Component.java:2347)
>>>>>>>>>> at org.apache.wicket.Component.render(Component.java:2275)
>>>>>>>>>> at org.apache.wicket.Page.renderPage(Page.java:1035)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:105)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:224)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:167)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:750)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:252)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:209)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:280)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:162)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.apache.wicket.protocol.http.WicketFilter.doFilter(WicketFilter.java:218)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1084)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:360)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:181)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:726)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:405)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:206)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.handler.HandlerCollection.handle(HandlerCollection.java:114)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
>>>>>>>>>> at org.mortbay.jetty.Server.handle(Server.java:324)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:505)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:829)
>>>>>>>>>> at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:514)
>>>>>>>>>> at
>>>>>>>>>> org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:211)
>>>>>>>>>> at
>>>>>>>>>> org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:380)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.io.nio.SelectChannelEndPoint.run(SelectChannelEndPoint.java:395)
>>>>>>>>>> at
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>>
>>>>>>>>>> org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:488)
>>>>>>>>>>
>>>>>>>>>> I tried to do this in serveral versions of wicket and always get
>>>>>>>>>> the
>>>>>>>>>> same
>>>>>>>>>> error.
>>>>>>>>>>
>>>>>>>>>> El 20/12/11 17:15, Igor Vaynberg escribió:
>>>>>>>>>>
>>>>>>>>>>> why doesnt that work in wicket?
>>>>>>>>>>>
>>>>>>>>>>> -igor
>>>>>>>>>>>
>>>>>>>>>>> On Tue, Dec 20, 2011 at 12:46 AM, Pablo Díaz<inspd...@gmail.com>
>>>>>>>>>>> wrote:
>>>>>>>>>>>>
>>>>>>>>>>>> Hi,
>>>>>>>>>>>>
>>>>>>>>>>>> I'm trying to do something like an internal proxy in my web-app
>>>>>>>>>>>> to
>>>>>>>>>>>> check
>>>>>>>>>>>> permisions to connect from my portal to a mapserver server.
>>>>>>>>>>>>
>>>>>>>>>>>> So, I'm trying to get de request from an OpenLayers and redirect
>>>>>>>>>>>> the
>>>>>>>>>>>> connection throw my internal proxy (after check the roles) .
>>>>>>>>>>>> I've done this before in Struts, but I don't know how do this in
>>>>>>>>>>>> Wicket.
>>>>>>>>>>>> In Struts is something similar to do this:
>>>>>>>>>>>>
>>>>>>>>>>>> HttpClient client = new HttpClient();
>>>>>>>>>>>> GetMethod method = new GetMethod(mapserverURL);
>>>>>>>>>>>>
>>>>>>>>>>>> method.getParams().setVersion(HttpVersion.HTTP_1_0);
>>>>>>>>>>>>
>>>>>>>>>>>> // Provide custom retry handler is necessary
>>>>>>>>>>>>
>>>>>>>>>>>> method.getParams().setParameter(HttpMethodParams.RETRY_HANDLER,
>>>>>>>>>>>> new DefaultHttpMethodRetryHandler(3, false));
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>> method.getParams().setParameter(HttpMethodParams.HTTP_CONTENT_CHARSET,
>>>>>>>>>>>> "ISO-8859-1");
>>>>>>>>>>>> method.getParams().setCredentialCharset("ISO-8859-1");
>>>>>>>>>>>>
>>>>>>>>>>>> try {
>>>>>>>>>>>> // Execute the method.
>>>>>>>>>>>> int statusCode = client.executeMethod(method);
>>>>>>>>>>>>
>>>>>>>>>>>> if (statusCode != HttpStatus.SC_OK) {
>>>>>>>>>>>> System.err.println("Method failed: " +
>>>>>>>>>>>> method.getStatusLine());
>>>>>>>>>>>> }
>>>>>>>>>>>>
>>>>>>>>>>>> InputStream input = method.getResponseBodyAsStream();
>>>>>>>>>>>> output = response.getOutputStream();
>>>>>>>>>>>>
>>>>>>>>>>>> byte[] data = new byte[1];
>>>>>>>>>>>> for (;;) {
>>>>>>>>>>>>
>>>>>>>>>>>> if ((input.read(data)) == -1) {
>>>>>>>>>>>> break;
>>>>>>>>>>>> }
>>>>>>>>>>>>
>>>>>>>>>>>> output.write(data);
>>>>>>>>>>>>
>>>>>>>>>>>> }
>>>>>>>>>>>> } catch (HttpException e) {
>>>>>>>>>>>> System.err.println("Fatal protocol violation: " +
>>>>>>>>>>>> e.getMessage());
>>>>>>>>>>>> e.printStackTrace();
>>>>>>>>>>>> return null;
>>>>>>>>>>>> } catch (IOException e) {
>>>>>>>>>>>> System.err.println("Fatal transport error: " +
>>>>>>>>>>>> e.getMessage());
>>>>>>>>>>>> e.printStackTrace();
>>>>>>>>>>>> return null;
>>>>>>>>>>>> } finally {
>>>>>>>>>>>> // Release the connection.
>>>>>>>>>>>> method.releaseConnection();
>>>>>>>>>>>> }
>>>>>>>>>>>> return null;
>>>>>>>>>>>>
>>>>>>>>>>>> Can anybody help me?
>>>>>>>>>>>>
>>>>>>>>>>>>
>>>>>>>>>>>>
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--
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