Wang YI

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: ${text.user.social[socialLink.name()]... [in template "webapp/user.ftl" at line 164, column 107] ~ Reached through: #nested [in template "webapp/parts/layout.ftl" in macro "layout" at line 47, column 9] ~ Reached through: @layout.layout title="${model.title}$... [in template "webapp/user.ftl" at line 12, column 1] ---- Java stack trace (for programmers): ---- freemarker.core.InvalidReferenceException: [... Exception message was already printed; see it above ...] at freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) at freemarker.core.EvalUtil.coerceModelToTextualCommon(EvalUtil.java:481) at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:401) at freemarker.core.EvalUtil.coerceModelToStringOrMarkup(EvalUtil.java:370) at freemarker.core.BuiltInForLegacyEscaping._eval(BuiltInForLegacyEscaping.java:34) at freemarker.core.Expression.eval(Expression.java:101) at freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:104) at freemarker.core.DollarVariable.accept(DollarVariable.java:63) at freemarker.core.Environment.visit(Environment.java:371) at freemarker.core.IteratorBlock$IterationContext.executedNestedContentForCollOrSeqListing(IteratorBlock.java:321) at freemarker.core.IteratorBlock$IterationContext.executeNestedContent(IteratorBlock.java:271) at freemarker.core.IteratorBlock$IterationContext.accept(IteratorBlock.java:244) at freemarker.core.Environment.visitIteratorBlock(Environment.java:645) at freemarker.core.IteratorBlock.acceptWithResult(IteratorBlock.java:108) at freemarker.core.IteratorBlock.accept(IteratorBlock.java:94) at freemarker.core.Environment.visit(Environment.java:335) at freemarker.core.Environment.visit(Environment.java:377) at freemarker.core.Environment.invokeNestedContent(Environment.java:621) at freemarker.core.BodyInstruction.accept(BodyInstruction.java:60) at freemarker.core.Environment.visit(Environment.java:335) at freemarker.core.Environment.visit(Environment.java:377) at freemarker.core.Environment.invokeMacroOrFunctionCommonPart(Environment.java:877) at freemarker.core.Environment.invokeMacro(Environment.java:813) at freemarker.core.UnifiedCall.accept(UnifiedCall.java:84) at freemarker.core.Environment.visit(Environment.java:335) at freemarker.core.Environment.visit(Environment.java:341) at freemarker.core.Environment.process(Environment.java:314) at freemarker.template.Template.process(Template.java:383) at org.glassfish.jersey.server.mvc.freemarker.FreemarkerViewProcessor.writeTo(FreemarkerViewProcessor.java:94) at org.glassfish.jersey.server.mvc.freemarker.FreemarkerViewProcessor.writeTo(FreemarkerViewProcessor.java:50) at org.glassfish.jersey.server.mvc.spi.ResolvedViewable.writeTo(ResolvedViewable.java:92) at org.glassfish.jersey.server.mvc.internal.ViewableMessageBodyWriter.writeTo(ViewableMessageBodyWriter.java:108) at org.glassfish.jersey.server.mvc.internal.ViewableMessageBodyWriter.writeTo(ViewableMessageBodyWriter.java:60) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.invokeWriteTo(WriterInterceptorExecutor.java:242) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor$TerminalWriterInterceptor.aroundWriteTo(WriterInterceptorExecutor.java:227) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:139) at org.glassfish.jersey.server.internal.JsonWithPaddingInterceptor.aroundWriteTo(JsonWithPaddingInterceptor.java:85) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:139) at org.glassfish.jersey.server.mvc.internal.TemplateMethodInterceptor.aroundWriteTo(TemplateMethodInterceptor.java:53) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:139) at org.glassfish.jersey.server.internal.MappableExceptionWrapperInterceptor.aroundWriteTo(MappableExceptionWrapperInterceptor.java:61) at org.glassfish.jersey.message.internal.WriterInterceptorExecutor.proceed(WriterInterceptorExecutor.java:139) at org.glassfish.jersey.message.internal.MessageBodyFactory.writeTo(MessageBodyFactory.java:1116) at org.glassfish.jersey.server.ServerRuntime$Responder.writeResponse(ServerRuntime.java:677) at org.glassfish.jersey.server.ServerRuntime$Responder.processResponse(ServerRuntime.java:385) at org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:375) at org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:264) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:248) at org.glassfish.jersey.internal.Errors$1.call(Errors.java:244) at org.glassfish.jersey.internal.Errors.process(Errors.java:292) at org.glassfish.jersey.internal.Errors.process(Errors.java:274) at org.glassfish.jersey.internal.Errors.process(Errors.java:244) at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265) at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:240) at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:697) at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394) at org.glassfish.jersey.servlet.ServletContainer.serviceImpl(ServletContainer.java:377) at org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:552) at org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:493) at org.glassfish.jersey.servlet.ServletContainer.doFilter(ServletContainer.java:430) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:116) at io.undertow.servlet.core.ManagedFilter.doFilter(ManagedFilter.java:67) at io.undertow.servlet.handlers.FilterHandler$FilterChainImpl.doFilter(FilterHandler.java:131) at io.undertow.servlet.handlers.FilterHandler.handleRequest(FilterHandler.java:84) at io.undertow.servlet.handlers.security.ServletSecurityRoleHandler.handleRequest(ServletSecurityRoleHandler.java:62) at io.undertow.servlet.handlers.ServletChain$1.handleRequest(ServletChain.java:68) at io.undertow.servlet.handlers.ServletDispatchingHandler.handleRequest(ServletDispatchingHandler.java:36) at io.undertow.servlet.handlers.RedirectDirHandler.handleRequest(RedirectDirHandler.java:68) at io.undertow.servlet.handlers.security.SSLInformationAssociationHandler.handleRequest(SSLInformationAssociationHandler.java:117) at io.undertow.servlet.handlers.security.ServletAuthenticationCallHandler.handleRequest(ServletAuthenticationCallHandler.java:57) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.security.handlers.AbstractConfidentialityHandler.handleRequest(AbstractConfidentialityHandler.java:46) at io.undertow.servlet.handlers.security.ServletConfidentialityConstraintHandler.handleRequest(ServletConfidentialityConstraintHandler.java:64) at io.undertow.security.handlers.AuthenticationMechanismsHandler.handleRequest(AuthenticationMechanismsHandler.java:60) at io.undertow.servlet.handlers.security.CachedAuthenticatedSessionHandler.handleRequest(CachedAuthenticatedSessionHandler.java:77) at io.undertow.security.handlers.AbstractSecurityContextAssociationHandler.handleRequest(AbstractSecurityContextAssociationHandler.java:43) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.SendErrorPageHandler.handleRequest(SendErrorPageHandler.java:52) at io.undertow.server.handlers.PredicateHandler.handleRequest(PredicateHandler.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.handleFirstRequest(ServletInitialHandler.java:276) at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:135) at io.undertow.servlet.handlers.ServletInitialHandler$2.call(ServletInitialHandler.java:132) at io.undertow.servlet.core.ServletRequestContextThreadSetupAction$1.call(ServletRequestContextThreadSetupAction.java:48) at io.undertow.servlet.core.ContextClassLoaderSetupAction$1.call(ContextClassLoaderSetupAction.java:43) at io.undertow.servlet.handlers.ServletInitialHandler.dispatchRequest(ServletInitialHandler.java:256) at io.undertow.servlet.handlers.ServletInitialHandler$1.handleRequest(ServletInitialHandler.java:101) at io.undertow.server.Connectors.executeRootHandler(Connectors.java:393) at io.undertow.server.HttpServerExchange$1.run(HttpServerExchange.java:859) at org.jboss.threads.ContextHandler$1.runWith(ContextHandler.java:18) at org.jboss.threads.EnhancedQueueExecutor$Task.run(EnhancedQueueExecutor.java:2513) at org.jboss.threads.EnhancedQueueExecutor$ThreadBody.run(EnhancedQueueExecutor.java:1538) at org.xnio.XnioWorker$WorkerThreadFactory$1$1.run(XnioWorker.java:1282) at java.base/java.lang.Thread.run(Thread.java:831)