Hi Alex, Thanks for your report. I've just fixed the potential NPE in the JsonConverter class and in other similar converters.
Best regards, Jerome -- Restlet ~ Founder and Technical Lead ~ http://www.restlet.org Noelios Technologies ~ http://www.noelios.com -----Message d'origine----- De : Alexander Kampmann [mailto:campino_a...@gmx.de] Envoyé : mardi 22 juin 2010 17:58 À : discuss@restlet.tigris.org Objet : A problem concerning JsonConverter hi, i'm very new to restlet, so please don't be annoyed if my questions are silly ;) My set- up is a spring- based web service, which uses Restlet for communication. It is deployed to Tomcat. web.xml is setting up an RestletFrameworkServlet. The servlet's spring config file uses a SpringRouter and two SpringFinders to register an TestRestlet and my real Restlet. The test works fine. It simply returns a string as answer to any get request and can be visited using a browser. The problem goes together with the other Restlet. It extends ServerResource and implements a custom Interface. The interface looks like that: public interface JSService { @Post("json") public abstract JSONObject execute(JSONObject data); } The Restlet itself returns a json object. I connect to the interface using ClientResource and its wrap method. So I get an Instance of JSService (my interface) on the client- side (written in Apache Wicket, if this is important). Calling execute() at this Instance leads to a NullPointerException in line 97 of JsonConverter (there is an excerpt from the log file below. There is clearly the client side failing, the request never reaches the server), the log says "Unable to get the score of the org.restlet.ext.json.jsonconver...@1862621 converter helper. " I'll be thankful for all suggestions. Greetings, Alex And that's the log file: Jun 22, 2010 5:34:43 PM org.restlet.engine.converter.ConverterUtils getBestHelper SEVERE: Unable get the score of the org.restlet.ext.json.jsonconver...@1862621 converter helper. java.lang.NullPointerException at org.restlet.ext.json.JsonConverter.score(JsonConverter.java:97) at org.restlet.engine.converter.ConverterUtils.getBestHelper(ConverterUtils.java:121) at org.restlet.service.ConverterService.toRepresentation(ConverterService.java:206) at org.restlet.service.ConverterService.toRepresentation(ConverterService.java:189) at org.restlet.resource.ClientResource.toRepresentation(ClientResource.java:1475) at org.restlet.resource.ClientResource$1.invoke(ClientResource.java:1573) at $Proxy49.execute(Unknown Source) -- GMX DSL: Internet-, Telefon- und Handy-Flat ab 19,99 EUR/mtl. Bis zu 150 EUR Startguthaben inklusive! http://portal.gmx.net/de/go/dsl ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2624625 ------------------------------------------------------ http://restlet.tigris.org/ds/viewMessage.do?dsForumId=4447&dsMessageId=2653018
