Hello, I found the solution for this. >From Camel 2.25.2/3.4.0 onward you need to add this property to the freemarker producer: allowContextMapAll=true. Otherwise you'll only have access to body/headers in a template engine like Freemarker. This is based on https://issues.apache.org/jira/browse/CAMEL-15050
Thanks for helping on the chat! Regards, Laurentiu On Thu, Nov 18, 2021 at 3:45 PM Laurentiu Trica <[email protected]> wrote: > Hello, > > I've been using Camel 2.16 with Freemarker 2.3.23.stable on Karaf 4.0.4 > for a long time now. > I'm switching to Camel 2.25.4 with Freemarker 2.3.31.stable on Karaf 4.3.3 > now. > > The problem is that something that worked without problems with the old > setup is now not working. When I have something like this in a freemarker > template: > ${request.setHeader('someHeader', 'some value')} > > I get this error: *The following has evaluated to null or missing:* > *==> request [in template "xml.ftl" at line 434, column 3]* > > Using ${body} is working, using ${headers} is also working, so I don't > know why ${request} wouldn't work... > > Can you please help me solve this? > > Many thanks! > Laurentiu > > Full stack trace below: > 2021-11-18T13:28:29,457 | ERROR | Camel (camelContext) thread #99 - > file://data/endpoints/IN | DefaultErrorHandler | 56 - > org.apache.camel.camel-core - 2.25.4 | Failed delivery for (MessageId: > ID-4205717fa667-1637237151718-6-9 on ExchangeId: > ID-4205717fa667-1637237151718-6-1). Exhausted after delivery attempt: 1 > caught: freemarker.core.InvalidReferenceException: *The following has > evaluated to null or missing:\n==> request* [in template "xml.ftl" at > line 434, column 3]\n\n----\nTip: If the failing expression is known to > legally refer to something that's sometimes null or missing, either specify > a default value like myOptionalV > java.lang.IllegalArgumentException: Transaction stopped on error > at > jdk.internal.reflect.GeneratedConstructorAccessor103.newInstance(Unknown > Source) ~[?:?] > at > jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45) > ~[?:?] > at > java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499) > ~[?:?] > at java.lang.reflect.Constructor.newInstance(Constructor.java:480) ~[?:?] > at > org.apache.aries.blueprint.utils.ReflectionUtils.newInstance(ReflectionUtils.java:369) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BeanRecipe.newInstance(BeanRecipe.java:839) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BeanRecipe.getInstanceFromType(BeanRecipe.java:350) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BeanRecipe.getInstance(BeanRecipe.java:283) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BeanRecipe.internalCreate2(BeanRecipe.java:685) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BeanRecipe.internalCreate(BeanRecipe.java:666) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.di.AbstractRecipe$1.call(AbstractRecipe.java:81) > ~[!/:1.10.3] > at java.util.concurrent.FutureTask.run(FutureTask.java:264) ~[?:?] > at > org.apache.aries.blueprint.di.AbstractRecipe.create(AbstractRecipe.java:90) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintRepository.createInstances(BlueprintRepository.java:360) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintRepository.createAll(BlueprintRepository.java:190) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintContainerImpl.instantiateEagerComponents(BlueprintContainerImpl.java:737) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintContainerImpl.doRun(BlueprintContainerImpl.java:433) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintContainerImpl.run(BlueprintContainerImpl.java:298) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:335) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:288) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintExtender.createContainer(BlueprintExtender.java:284) > ~[!/:1.10.3] > at > org.apache.aries.blueprint.container.BlueprintExtender.modifiedBundle(BlueprintExtender.java:274) > ~[!/:1.10.3] > at > org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:500) > ~[!/:1.1.3] > at > org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.customizerModified(BundleHookBundleTracker.java:433) > ~[!/:1.1.3] > at > org.apache.aries.util.tracker.hook.BundleHookBundleTracker$AbstractTracked.track(BundleHookBundleTracker.java:725) > ~[!/:1.1.3] > at > org.apache.aries.util.tracker.hook.BundleHookBundleTracker$Tracked.bundleChanged(BundleHookBundleTracker.java:463) > ~[!/:1.1.3] > at > org.apache.aries.util.tracker.hook.BundleHookBundleTracker$BundleEventHook.event(BundleHookBundleTracker.java:422) > ~[!/:1.1.3] > at > org.apache.felix.framework.util.SecureAction.invokeBundleEventHook(SecureAction.java:1180) > ~[?:?] > at > org.apache.felix.framework.EventDispatcher.createWhitelistFromHooks(EventDispatcher.java:730) > ~[?:?] > at > org.apache.felix.framework.EventDispatcher.fireBundleEvent(EventDispatcher.java:485) > ~[?:?] > at org.apache.felix.framework.Felix.fireBundleEvent(Felix.java:4817) ~[?:?] > at org.apache.felix.framework.Felix.startBundle(Felix.java:2336) ~[?:?] > at org.apache.felix.framework.BundleImpl.start(BundleImpl.java:998) ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundle(DirectoryWatcher.java:1260) > ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.startBundles(DirectoryWatcher.java:1233) > ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.startAllBundles(DirectoryWatcher.java:1221) > ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.doProcess(DirectoryWatcher.java:515) > ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.process(DirectoryWatcher.java:365) > ~[?:?] > at > org.apache.felix.fileinstall.internal.DirectoryWatcher.run(DirectoryWatcher.java:316) > ~[?:?] > Suppressed: freemarker.core.InvalidReferenceException: > *The following has evaluated to null or missing:==> request [in template > "xml.ftl" at line 434, column 3]* > > ---- > Tip: If the failing expression is known to legally refer to something > that's sometimes null or missing, either specify a default value like > myOptionalVar!myDefault, or use <#if > myOptionalVar??>when-present<#else>when-missing</#if>. (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: ${request.setHeader("error_on_parcel_... [in template > "xml.ftl" at line 434, column 1] > ---- > at > freemarker.core.InvalidReferenceException.getInstance(InvalidReferenceException.java:134) > ~[!/:2.3.31] > at > freemarker.core.UnexpectedTypeException.newDescriptionBuilder(UnexpectedTypeException.java:85) > ~[!/:2.3.31] > at > freemarker.core.UnexpectedTypeException.<init>(UnexpectedTypeException.java:48) > ~[!/:2.3.31] > at freemarker.core.NonHashException.<init>(NonHashException.java:49) > ~[!/:2.3.31] > at freemarker.core.Dot._eval(Dot.java:48) ~[!/:2.3.31] > at freemarker.core.Expression.eval(Expression.java:101) ~[!/:2.3.31] > at freemarker.core.MethodCall._eval(MethodCall.java:55) ~[!/:2.3.31] > at freemarker.core.Expression.eval(Expression.java:101) ~[!/:2.3.31] > at > freemarker.core.DollarVariable.calculateInterpolatedStringOrMarkup(DollarVariable.java:100) > ~[!/:2.3.31] > at freemarker.core.DollarVariable.accept(DollarVariable.java:63) > ~[!/:2.3.31] > at freemarker.core.Environment.visit(Environment.java:347) ~[!/:2.3.31] > at freemarker.core.Environment.visit(Environment.java:353) ~[!/:2.3.31] > at freemarker.core.Environment.process(Environment.java:326) ~[!/:2.3.31] > at freemarker.template.Template.process(Template.java:383) ~[!/:2.3.31] > at > org.apache.camel.component.freemarker.FreemarkerEndpoint.onExchange(FreemarkerEndpoint.java:182) > ~[!/:2.25.4] > at > org.apache.camel.impl.ProcessorEndpoint$1.process(ProcessorEndpoint.java:71) > ~[!/:2.25.4] > at > org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) > ~[!/:2.25.4] > at > org.apache.camel.processor.SendProcessor.process(SendProcessor.java:148) > ~[!/:2.25.4] > at > org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548) > [!/:2.25.4] > at > org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) > [!/:2.25.4] > at org.apache.camel.processor.Pipeline.process(Pipeline.java:138) > [!/:2.25.4] > at org.apache.camel.processor.Pipeline.process(Pipeline.java:101) > [!/:2.25.4] > at > org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) > [!/:2.25.4] > at > org.apache.camel.component.file.GenericFileConsumer.processExchange(GenericFileConsumer.java:452) > [!/:2.25.4] > at > org.apache.camel.component.file.GenericFileConsumer.processBatch(GenericFileConsumer.java:221) > [!/:2.25.4] > at > org.apache.camel.component.file.GenericFileConsumer.poll(GenericFileConsumer.java:185) > [!/:2.25.4] > at > org.apache.camel.impl.ScheduledPollConsumer.doRun(ScheduledPollConsumer.java:174) > [!/:2.25.4] > at > org.apache.camel.impl.ScheduledPollConsumer.run(ScheduledPollConsumer.java:101) > [!/:2.25.4] > at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:515) > [?:?] > at java.util.concurrent.FutureTask.runAndReset(FutureTask.java:305) [?:?] > at > java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:305) > [?:?] > at > java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1130) > [?:?] > at > java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:630) > [?:?] > at java.lang.Thread.run(Thread.java:831) [?:?] > -- Laurentiu Trica Software Developer Mobile: (+40) 722 329318 S.C MoreDevs S.R.L. 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