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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: ${articleAttasA1.id} [in template "pages/index.html" at line 81, column 105] ---- 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.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100) at freemarker.core.DollarVariable.accept(DollarVariable.java:63) 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 c.ci.core.tools.ftl.FreeMarkerUtil.printFile(FreeMarkerUtil.java:74) at c.ci.core.model.service.product.site.article.QpSiteArticleService.publishHomePage(QpSiteArticleService.java:2344) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.CGLIB$publishHomePage$21() at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f$$FastClassByCGLIB$$420f102c.invoke() at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at com.jfinal.aop.Invocation.invoke(Invocation.java:84) at com.jfinal.aop.Callback.intercept(Callback.java:96) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.publishHomePage() at c.ci.core.model.service.product.site.article.QpSiteArticleService.publishStaticPage(QpSiteArticleService.java:1549) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.CGLIB$publishStaticPage$13() at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f$$FastClassByCGLIB$$420f102c.invoke() at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at com.jfinal.aop.Invocation.invoke(Invocation.java:84) at com.jfinal.plugin.activerecord.tx.Tx.intercept(Tx.java:63) at com.jfinal.aop.Invocation.invoke(Invocation.java:69) at com.jfinal.aop.Callback.intercept(Callback.java:96) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.publishStaticPage() at c.ci.core.model.service.product.site.article.QpSiteArticleService.doPublish(QpSiteArticleService.java:952) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.CGLIB$doPublish$3() at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f$$FastClassByCGLIB$$420f102c.invoke() at net.sf.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228) at com.jfinal.aop.Invocation.invoke(Invocation.java:84) at com.jfinal.plugin.activerecord.tx.Tx.intercept(Tx.java:77) at com.jfinal.aop.Invocation.invoke(Invocation.java:69) at com.jfinal.aop.Callback.intercept(Callback.java:96) at c.ci.core.model.service.product.site.article.QpSiteArticleService$$EnhancerByCGLIB$$a2dea62f.doPublish() at c.ci.core.controller.product.site.article.QpSiteArticleController.doPublish(QpSiteArticleController.java:1024) at sun.reflect.GeneratedMethodAccessor1697.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at com.jfinal.aop.Invocation.invoke(Invocation.java:75) at c.ci.core.controller.interceptor.RequestURIInterceptor.intercept(RequestURIInterceptor.java:30) at com.jfinal.aop.Invocation.invoke(Invocation.java:69) at com.jfinal.ext.plugin.shiro.ShiroInterceptor.intercept(ShiroInterceptor.java:59) at com.jfinal.aop.Invocation.invoke(Invocation.java:69) at com.jfinal.core.ActionHandler.handle(ActionHandler.java:89) at com.jfinal.ext.handler.WsSkipHandler.handle(WsSkipHandler.java:22) at c.ci.core.controller.handler.SessionIdHandler.handle(SessionIdHandler.java:17) at com.jfinal.core.JFinalFilter.doFilter(JFinalFilter.java:89) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:61) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AdviceFilter.executeChain(AdviceFilter.java:108) at org.apache.shiro.web.servlet.AdviceFilter.doFilterInternal(AdviceFilter.java:137) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at org.apache.shiro.web.servlet.ProxiedFilterChain.doFilter(ProxiedFilterChain.java:66) at org.apache.shiro.web.servlet.AbstractShiroFilter.executeChain(AbstractShiroFilter.java:449) at org.apache.shiro.web.servlet.AbstractShiroFilter$1.call(AbstractShiroFilter.java:365) at org.apache.shiro.subject.support.SubjectCallable.doCall(SubjectCallable.java:90) at org.apache.shiro.subject.support.SubjectCallable.call(SubjectCallable.java:83) at org.apache.shiro.subject.support.DelegatingSubject.execute(DelegatingSubject.java:383) at org.apache.shiro.web.servlet.AbstractShiroFilter.doFilterInternal(AbstractShiroFilter.java:362) at org.apache.shiro.web.servlet.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:125) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at c.ci.core.controller.file.XssFilter.doFilter(XssFilter.java:42) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at org.sitemesh.webapp.contentfilter.ContentBufferingFilter.bufferAndPostProcess(ContentBufferingFilter.java:169) at org.sitemesh.webapp.contentfilter.ContentBufferingFilter.doFilter(ContentBufferingFilter.java:126) at org.sitemesh.webapp.SiteMeshFilter.doFilter(SiteMeshFilter.java:120) at org.sitemesh.config.ConfigurableSiteMeshFilter.doFilter(ConfigurableSiteMeshFilter.java:163) at com.tongweb.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) at com.tongweb.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) at c.ci.core.controller.filter.encoding.PageEncodingFilter.doFilter(PageEncodingFilter.java:60) 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:103) at com.tongweb.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44) at com.tongweb.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:452) at com.tongweb.catalina.core.StandardHostValve.invoke(StandardHostValve.java:348) 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:468) at com.tongweb.coyote.http11.Http11Processor.service(Http11Processor.java:872) at com.tongweb.coyote.http11.ThanosHttp11Processor.service(ThanosHttp11Processor.java:19) at com.tongweb.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) at com.tongweb.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:924) at com.tongweb.web.util.net.Nio2Endpoint$SocketProcessor.doRun(Nio2Endpoint.java:1658) at com.tongweb.web.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) at com.tongweb.web.util.net.AbstractEndpoint.processSocket(AbstractEndpoint.java:872) at com.tongweb.web.util.net.Nio2Endpoint$Nio2SocketWrapper$4.completed(Nio2Endpoint.java:657) at com.tongweb.web.util.net.Nio2Endpoint$Nio2SocketWrapper$4.completed(Nio2Endpoint.java:635) 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:748)