when-present<#else>when-missing. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)?? ---- ---- FTL stack trace ("~" means nesting-related): - Failed at: ${item.finfo.COVERIMAGE!""} [in template "hkwl/lxwm.shtml" at line 26, column 56] - Reached through: @wtl_list columnId="${columnId}" prev... [in template "hkwl/lxwm.shtml" at line 22, column 25] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) at freemarker.core.UnexpectedTypeException.newDesciptionBuilder(UnexpectedTypeException.java:85) at freemarker.core.UnexpectedTypeException.(UnexpectedTypeException.java:48) at freemarker.core.NonHashException.(NonHashException.java:49) at freemarker.core.Dot._eval(Dot.java:48) at freemarker.core.Expression.eval(Expression.java:83) at freemarker.core.DefaultToExpression._eval(DefaultToExpression.java:88) at freemarker.core.Expression.eval(Expression.java:83) at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100) at freemarker.core.DollarVariable.accept(DollarVariable.java:63) at freemarker.core.Environment.visit(Environment.java:366) at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:317) at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:271) at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:242) at freemarker.core.Environment.visitIteratorBlock(Environment.java:642) at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:107) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:93) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:372) at freemarker.core.Environment$NestedElementTemplateDirectiveBody.render(Environment.java:2900) at com.whir.tags.directive.tags.ListTag.execute(ListTag.java:322) at freemarker.core.Environment.visit(Environment.java:445) at freemarker.core.UnifiedCall.accept(UnifiedCall.java:101) at freemarker.core.Environment.visit(Environment.java:330) at freemarker.core.Environment.visit(Environment.java:336) at freemarker.core.Environment.process(Environment.java:309) at freemarker.template.Template.process(Template.java:384) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.processTemplate(FreeMarkerView.java:396) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.doRender(FreeMarkerView.java:309) at org.springframework.web.servlet.view.freemarker.FreeMarkerView.renderMergedTemplateModel(FreeMarkerView.java:257) at org.springframework.web.servlet.view.AbstractTemplateView.renderMergedOutputModel(AbstractTemplateView.java:165) at org.springframework.web.servlet.view.AbstractView.render(AbstractView.java:314) at org.springframework.web.servlet.DispatcherServlet.render(DispatcherServlet.java:1325) at org.springframework.web.servlet.DispatcherServlet.processDispatchResult(DispatcherServlet.java:1069) at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1008) at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:925) at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:974) at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:866) at javax.servlet.http.HttpServlet.service(HttpServlet.java:622) at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:851) at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.tongweb.web.websocket.server.WsFilter.doFilter(WsFilter.java:53) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.github.xiaoymin.swaggerbootstrapui.filter.SecurityBasicAuthFilter.doFilter(SecurityBasicAuthFilter.java:84) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.github.xiaoymin.swaggerbootstrapui.filter.ProductionSecurityFilter.doFilter(ProductionSecurityFilter.java:53) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.whir.web.filter.ValidateCodeFilter.doFilterInternal(ValidateCodeFilter.java:51) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:101) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.alibaba.druid.support.http.WebStatFilter.doFilter(WebStatFilter.java:124) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:320) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:126) at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:90) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:118) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:137) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:111) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:158) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:63) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilterInternal(BasicAuthenticationFilter.java:155) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:200) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at com.whir.web.filter.JwtAuthenticationTokenFilter.doFilterInternal(JwtAuthenticationTokenFilter.java:286) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:116) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.web.filter.CorsFilter.doFilterInternal(CorsFilter.java:96) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.header.HeaderWriterFilter.doHeadersAfter(HeaderWriterFilter.java:92) at org.springframework.security.web.header.HeaderWriterFilter.doFilterInternal(HeaderWriterFilter.java:77) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:105) at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:334) at org.springframework.security.web.context.request.async.WebAsyncManagerIntegrationFilter.doFilterInternal(WebAsyncManagerIntegrationFilter.java:56) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.security.web.FilterChainProxy$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.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:357) at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:270) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:109) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:81) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:117) at org.springframework.boot.web.servlet.support.ErrorPageFilter.access$000(ErrorPageFilter.java:61) at org.springframework.boot.web.servlet.support.ErrorPageFilter$1.doFilterInternal(ErrorPageFilter.java:92) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at org.springframework.boot.web.servlet.support.ErrorPageFilter.doFilter(ErrorPageFilter.java:110) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:200) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at com.tongweb.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) at com.tongweb.catalina.core.StandardContextValve.invoke0(StandardContextValve.java:123) at com.tongweb.catalina.core.ThanosStandardContextValve.invoke0(ThanosStandardContextValve.java:14) at com.tongweb.catalina.core.StandardContextValve.invoke(StandardContextValve.java:114) at com.tongweb.catalina.core.ThanosStandardContextValve.invoke(ThanosStandardContextValve.java:49) at com.tongweb.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44) at com.tongweb.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:445) at com.tongweb.catalina.core.StandardHostValve.invoke(StandardHostValve.java:368) at com.tongweb.tomee.catalina.OpenEJBSecurityListener$RequestCapturer.invoke(OpenEJBSecurityListener.java:97) at com.tongweb.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:80) at com.tongweb.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) at com.tongweb.catalina.core.ThanosStandardEngineValve.invoke(ThanosStandardEngineValve.java:43) at com.tongweb.catalina.realm.RealmValve.invoke(RealmValve.java:21) at com.tongweb.catalina.connector.ThanosCoyoteAdaptor.service(ThanosCoyoteAdaptor.java:480) at com.tongweb.coyote.http11.Http11Processor.service(Http11Processor.java:894) at com.tongweb.coyote.http11.ThanosHttp11Processor.service(ThanosHttp11Processor.java:19) at com.tongweb.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:73) at com.tongweb.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:935) at com.tongweb.web.util.net.Nio2Endpoint$SocketProcessor.doRun(Nio2Endpoint.java:1673) at com.tongweb.web.util.net.SocketProcessorBase.run(SocketProcessorBase.java:52) at com.tongweb.web.util.net.AbstractEndpoint.processSocket(AbstractEndpoint.java:872) at com.tongweb.web.util.net.Nio2Endpoint$Nio2SocketWrapper$4.completed(Nio2Endpoint.java:672) at com.tongweb.web.util.net.Nio2Endpoint$Nio2SocketWrapper$4.completed(Nio2Endpoint.java:650) at sun.nio.ch.Invoker.invokeUnchecked(Invoker.java:126) at sun.nio.ch.Invoker$2.run(Invoker.java:218) at sun.nio.ch.AsynchronousChannelGroupImpl$1.run(AsynchronousChannelGroupImpl.java:112) at com.tongweb.web.util.threads.TWThreadPoolExecutor.runWorker(TWThreadPoolExecutor.java:1172) at com.tongweb.web.util.threads.TWThreadPoolExecutor$Worker.run(TWThreadPoolExecutor.java:628) at com.tongweb.web.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) at java.lang.Thread.run(Thread.java:750)