We are calling our own GeoServer WMS with GetMap requests using POST and SLD_BODY. The XML-content looks something like the below example. This gives us a bakground map with our own features overlayed onto it.
We are currently using GeoServer 2.15.5 and it works fine. In versions after 2.15.5 there seems like something has changed as we get the error "couldn't find style named ''" for the named layer.
However we can get map images for the namedlayer if we not use SLD_BODY but LAYERS instead.
The named background layer comes from a cascaded WMS and and we have also noticed an error opening the layer in the GeoServer UI "Couldn't fetch remote styles". In version 2.15.5 we don't get this error and the default "raster" style is used (working just fine).
21 Apr 10:04:34 ERROR [catalog.impl] - Unable to fetch available styles for cascaded layer topowebbkartan 21 Apr 10:04:34 ERROR [catalog.impl] - Index 0 out of bounds for length 0 java.lang.IndexOutOfBoundsException: Index 0 out of bounds for length 0 at java.base/jdk.internal.util.Preconditions.outOfBounds(Preconditions.java:64) at java.base/jdk.internal.util.Preconditions.outOfBoundsCheckIndex(Preconditions.java:70) at java.base/jdk.internal.util.Preconditions.checkIndex(Preconditions.java:248) at java.base/java.util.Objects.checkIndex(Objects.java:372) at java.base/java.util.ArrayList.get(ArrayList.java:459) at org.geoserver.catalog.impl.WMSLayerInfoImpl.getStyleInfo(WMSLayerInfoImpl.java:236) at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:195) at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1655) at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:484) at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:474) at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:913) at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234) at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:578) at org.geoserver.catalog.impl.WMSLayerInfoImpl.getRemoteStyleInfos(WMSLayerInfoImpl.java:195) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.base/java.lang.reflect.Method.invoke(Method.java:566) at org.geoserver.catalog.impl.ModificationProxy.invoke(ModificationProxy.java:94) at com.sun.proxy.$Proxy631.getRemoteStyleInfos(Unknown Source) at org.geoserver.wms.web.publish.WMSLayerConfig.initWMSCascadedUI(WMSLayerConfig.java:210) at org.geoserver.wms.web.publish.WMSLayerConfig.(WMSLayerConfig.java:153) at jdk.internal.reflect.GeneratedConstructorAccessor819.newInstance(Unknown Source) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.geoserver.web.publish.PublishedConfigurationPage$PublishingEditTabPanel$1.populateItem(PublishedConfigurationPage.java:447) at org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:523) at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:124) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.extensions.markup.html.tabs.TabbedPanel.onBeforeRender(TabbedPanel.java:274) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.markup.html.form.Form.onBeforeRender(Form.java:1816) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.Page.onBeforeRender(Page.java:801) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.Component.internalPrepareForRender(Component.java:2236) at org.apache.wicket.Page.internalPrepareForRender(Page.java:242) at org.apache.wicket.Component.render(Component.java:2327) at org.apache.wicket.Page.renderPage(Page.java:1018) at org.apache.wicket.request.handler.render.WebPageRenderer.renderPage(WebPageRenderer.java:124) at org.apache.wicket.request.handler.render.WebPageRenderer.respond(WebPageRenderer.java:236) at org.apache.wicket.core.request.handler.RenderPageRequestHandler.respond(RenderPageRequestHandler.java:175) at org.apache.wicket.request.cycle.RequestCycle$HandlerExecutor.respond(RequestCycle.java:895) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:64) at org.apache.wicket.request.RequestHandlerStack.execute(RequestHandlerStack.java:97) at org.apache.wicket.request.cycle.RequestCycle.execute(RequestCycle.java:265) at org.apache.wicket.request.cycle.RequestCycle.processRequest(RequestCycle.java:222) at org.apache.wicket.request.cycle.RequestCycle.processRequestAndDetach(RequestCycle.java:293) at org.apache.wicket.protocol.http.WicketFilter.processRequestCycle(WicketFilter.java:261) at org.apache.wicket.protocol.http.WicketFilter.processRequest(WicketFilter.java:203) at org.apache.wicket.protocol.http.WicketServlet.doPost(WicketServlet.java:159) at javax.servlet.http.HttpServlet.service(HttpServlet.java:528) at javax.servlet.http.HttpServlet.service(HttpServlet.java:596) at org.springframework.web.servlet.mvc.ServletWrappingController.handleRequestInternal(ServletWrappingController.java:166) at org.springframework.web.servlet.mvc.AbstractController.handleRequest(AbstractController.java:177) at org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter.handle(SimpleControllerHandlerAdapter.java:52) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1043) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:943) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:909) at javax.servlet.http.HttpServlet.service(HttpServlet.java:528) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) at javax.servlet.http.HttpServlet.service(HttpServlet.java:596) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:209) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.ThreadLocalsCleanupFilter.doFilter(ThreadLocalsCleanupFilter.java:28) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:73) at org.geoserver.ows.HTTPHeadersCollector.doFilter(HTTPHeadersCollector.java:48) at org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:70) at org.geoserver.filters.LoggingFilter.doFilter(LoggingFilter.java:194) at org.geoserver.filters.SpringDelegatingFilter$Chain.doFilter(SpringDelegatingFilter.java:70) at org.geoserver.filters.SpringDelegatingFilter.doFilter(SpringDelegatingFilter.java:43) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.platform.AdvancedDispatchFilter.doFilter(AdvancedDispatchFilter.java:39) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:127) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:91) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75) at org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:119) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75) at org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.geoserver.security.filter.GeoServerAnonymousAuthenticationFilter.doFilter(GeoServerAnonymousAuthenticationFilter.java:53) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75) at org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92) at org.geoserver.security.filter.GeoServerUserNamePasswordAuthenticationFilter.doFilter(GeoServerUserNamePasswordAuthenticationFilter.java:122) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71) at org.springframework.security.web.authentication.rememberme.RememberMeAuthenticationFilter.doFilter(RememberMeAuthenticationFilter.java:158) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75) at org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:71) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) at org.geoserver.security.filter.GeoServerSecurityContextPersistenceFilter$1.doFilter(GeoServerSecurityContextPersistenceFilter.java:52) at org.geoserver.security.filter.GeoServerCompositeFilter$NestedFilterChain.doFilter(GeoServerCompositeFilter.java:75) at org.geoserver.security.filter.GeoServerCompositeFilter.doFilter(GeoServerCompositeFilter.java:92) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:215) at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:178) at org.geoserver.security.GeoServerSecurityFilterChainProxy.doFilter(GeoServerSecurityFilterChainProxy.java:142) at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:358) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:271) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.XFrameOptionsFilter.doFilter(XFrameOptionsFilter.java:77) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.GZIPFilter.doFilter(GZIPFilter.java:48) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.SessionDebugFilter.doFilter(SessionDebugFilter.java:49) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.geoserver.filters.FlushSafeFilter.doFilter(FlushSafeFilter.java:42) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:178) at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:153) at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:167) at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:90) at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:492) at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:130) at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:93) at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:673) at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:74) at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343) at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:389) at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:63) at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:926) at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1791) at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.base/java.lang.Thread.run(Thread.java:834) 21 Apr 10:04:34 ERROR [web.publish] - null:unable to fetch remote styles for topowebbkartan java.lang.reflect.UndeclaredThrowableException at com.sun.proxy.$Proxy631.getRemoteStyleInfos(Unknown Source) at org.geoserver.wms.web.publish.WMSLayerConfig.initWMSCascadedUI(WMSLayerConfig.java:210) at org.geoserver.wms.web.publish.WMSLayerConfig.(WMSLayerConfig.java:153) at jdk.internal.reflect.GeneratedConstructorAccessor819.newInstance(Unknown Source) at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490) at org.geoserver.web.publish.PublishedConfigurationPage$PublishingEditTabPanel$1.populateItem(PublishedConfigurationPage.java:447) at org.apache.wicket.markup.html.list.ListView.onPopulate(ListView.java:523) at org.apache.wicket.markup.repeater.AbstractRepeater.onBeforeRender(AbstractRepeater.java:124) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921) at org.apache.wicket.extensions.markup.html.tabs.TabbedPanel.onBeforeRender(TabbedPanel.java:274) at org.apache.wicket.Component.internalBeforeRender(Component.java:950) at org.apache.wicket.Component.beforeRender(Component.java:1018) at org.apache.wicket.MarkupContainer.onBeforeRenderChildren(MarkupContainer.java:1826) at org.apache.wicket.Component.onBeforeRender(Component.java:3921)
