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Posted to users@camel.apache.org by Laurentiu Trica <la...@moredevs.ro> on 2021/11/18 13:45:00 UTC
Camel and Freemarker - ${request} evaluated to null or missing
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) [?:?]
Re: Camel and Freemarker - ${request} evaluated to null or missing
Posted by Laurentiu Trica <la...@moredevs.ro>.
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 <la...@moredevs.ro>
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. Email: laurentiu.trica@moredevs.ro
This message can contain privileged or confidential information and it is
intended only for addressee. Any unauthorized disclosure is strictly
prohibited.