Is your Pair serializable, i.e. a POJO? Otherwise you can just create a Map or List of Map of Lists.
Michael > Am 24.03.2015 um 10:23 schrieb Constantin Mitocaru <[email protected]>: > > > I have not found a solid solution on stackoverflow nor here yet. > I developed a Server plugin and installed it on neo4j server. > The rest works fine if it returns primitives. > However when it gets to this method: > > > @GET > @Path("/dum") > @Produces({MediaType.APPLICATION_JSON}) > public RestResponse<Pair<String,String>> dumDum() { > return RestResponse.success("Ok", Pair.of("dum", "dum")); > } > > > > > throws this error > > > SEVERE: A message body writer for Java class com.mycomp.rest.RestResponse, > and Java type > com.mycomp.rest.RestResponse<com.mycomp.commons.Pair<java.lang.String, > java.lang.String>>, and MIME media type application/json was not found > Mar 24, 2015 11:19:41 AM com.sun.jersey.spi.container.ContainerResponse write > SEVERE: The registered message body writers compatible with the MIME media > type are: > */* -> > com.sun.jersey.core.impl.provider.entity.FormProvider > com.sun.jersey.core.impl.provider.entity.StringProvider > com.sun.jersey.core.impl.provider.entity.ByteArrayProvider > com.sun.jersey.core.impl.provider.entity.FileProvider > com.sun.jersey.core.impl.provider.entity.InputStreamProvider > com.sun.jersey.core.impl.provider.entity.DataSourceProvider > com.sun.jersey.core.impl.provider.entity.XMLJAXBElementProvider$General > com.sun.jersey.core.impl.provider.entity.ReaderProvider > com.sun.jersey.core.impl.provider.entity.DocumentProvider > com.sun.jersey.core.impl.provider.entity.StreamingOutputProvider > com.sun.jersey.core.impl.provider.entity.SourceProvider$SourceWriter > com.sun.jersey.server.impl.template.ViewableMessageBodyWriter > com.sun.jersey.core.impl.provider.entity.XMLRootElementProvider$General > com.sun.jersey.core.impl.provider.entity.XMLListElementProvider$General > > Mar 24, 2015 11:19:41 AM com.sun.jersey.spi.container.ContainerResponse > logException > SEVERE: Mapped exception to response: 500 (Internal Server Error) > javax.ws.rs.WebApplicationException: com.sun.jersey.api.MessageException: A > message body writer for Java class com.mycomp.rest.RestResponse, and Java > type com.mycomp.rest.RestResponse<com.mycomp.commons.Pair<java.lang.String, > java.lang.String>>, and MIME media type application/json was not found > at > com.sun.jersey.spi.container.ContainerResponse.write(ContainerResponse.java:285) > at > com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1437) > at > com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349) > at > com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339) > at > com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416) > at > com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537) > at > com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699) > at javax.servlet.http.HttpServlet.service(HttpServlet.java:848) > at > org.eclipse.jetty.servlet.ServletHolder.handle(ServletHolder.java:698) > at > org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:505) > at > org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:211) > at > org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1096) > at > org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:432) > at > org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:175) > at > org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1030) > at > org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:136) > at > org.eclipse.jetty.server.handler.HandlerList.handle(HandlerList.java:52) > at > org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:97) > at org.eclipse.jetty.server.Server.handle(Server.java:445) > at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:268) > at > org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:229) > at > org.eclipse.jetty.io.AbstractConnection$ReadCallback.run(AbstractConnection.java:358) > at > org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:601) > at > org.eclipse.jetty.util.thread.QueuedThreadPool$3.run(QueuedThreadPool.java:532) > at java.lang.Thread.run(Thread.java:745) > Caused by: com.sun.jersey.api.MessageException: A message body writer for > Java class com.mycomp.rest.RestResponse, and Java type > com.mycomp.rest.RestResponse<com.mycomp.commons.Pair<java.lang.String, > java.lang.String>>, and MIME media type application/json was not found > ... 25 more > > > > One solution i found was to use genson. It works BUT it breaks the > functionality of the regular neo4j endpoint db/data/. So the genson solution > ain't gonna fly. > Under a normal web app I would add this in web.xml > > <init-param> > > <param-name>com.sun.jersey.api.json.POJOMappingFeature</param-name> > <param-value>true</param-value> > </init-param> > > > > But here I do NOT have a web.xml to alter. > > Please let me know my options > > > > > -- > You received this message because you are subscribed to the Google Groups > "Neo4j" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected] > <mailto:[email protected]>. > For more options, visit https://groups.google.com/d/optout > <https://groups.google.com/d/optout>. -- You received this message because you are subscribed to the Google Groups "Neo4j" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
