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Posted to dev@netbeans.apache.org by Ernie Rael <er...@raelity.com> on 2022/02/26 21:15:28 UTC
Gui Builder fail when log4j
Hi all,
I'm looking at a problem between log4j and gui builder (not Matisse) for
someone.
NB13-rc3, jdk-17 (also fails with NB-12.2, jdk-15)
The following trivial and tiny NB project runs fine (for example under
the debugger).
https://github.com/bpangburn/swingset/files/8146641/GuiFormTest.zip
Comment out this line (log4j stuff) in the play.MyTextField constructor
and all is well.
final Logger logger = LogManager.getLogger();
One way to reproduce the problem (if it doesn't just happen). Open
NewJFrame.jav in the designer
ContextMenu: AddFromPalette > Beans > ChooseBean
enter: play.MyTextField
Get the exception seen at the end of this message. Seems that log4j is
doing something weird that NB detects as a problem (security manager?).
I took a quick look at CreationFactory.createDefaultInstance(Class) it
does a weird dance with classloaders (yes plural), but there's
CreationDescriptor cd = getDescriptor(cls);
...
Object instance = cd != null ?
cd.createDefaultInstance() :
cls.newInstance();
And I was hoping there would be a way to get some BeanInfo thing (I
don't really know about BeanInfo's) as the CreationDescriptor but I
didn't find anything like that. And I don't really think that's the problem.
-ernie
This project was created with beanbinding plugin, but that's not
required to get the exception.
INFO [org.netbeans.modules.form.MetaComponentCreator]: Failed to create
an instance of play.MyTextField class.
The class itself was loaded, but instantiating failed.
This typically happens due to an exception in constructor/initializer
code, or failure in loading an additional class needed by the component.
Check the attached exception.
java.lang.UnsupportedOperationException: No class provided, and an
appropriate one cannot be found.
at org.apache.logging.log4j.LogManager.callerClass(LogManager.java:573)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:598)
at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:585)
at play.MyTextField.<init>(MyTextField.java:15)
at
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
Method)
at
java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
at
java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at
java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
at
java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
at
java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
at java.base/java.lang.Class.newInstance(Class.java:645)
at
org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:155)
at
org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:227)
at
org.netbeans.modules.form.RADComponent.initInstance(RADComponent.java:166)
The above stack is consistent no matter how the exception is exactly
generated (RADComponent.initInstance) get called from multiple places.
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Re: Gui Builder fail when log4j
Posted by Ernie Rael <er...@raelity.com>.
Hey Christian,
Thanks for the pointer. In the case I'm looking at, the gui builder is
instantiating the component which uses LogManager.getLogger(). The code
is not part of a plugin.
-ernie
On 2/26/22 2:44 PM, Christian Oyarzun wrote:
> Hi Ernie,
>
> The classloader does support multi-release log4j jar file.
> https://issues.apache.org/jira/browse/NETBEANS-3679
>
> --Christian
>
> On Sat, Feb 26, 2022 at 4:16 PM Ernie Rael <er...@raelity.com> wrote:
>
>> Hi all,
>>
>> I'm looking at a problem between log4j and gui builder (not Matisse) for
>> someone.
>> NB13-rc3, jdk-17 (also fails with NB-12.2, jdk-15)
>>
>> The following trivial and tiny NB project runs fine (for example under
>> the debugger).
>> https://github.com/bpangburn/swingset/files/8146641/GuiFormTest.zip
>>
>> Comment out this line (log4j stuff) in the play.MyTextField constructor
>> and all is well.
>> final Logger logger = LogManager.getLogger();
>>
>> One way to reproduce the problem (if it doesn't just happen). Open
>> NewJFrame.jav in the designer
>> ContextMenu: AddFromPalette > Beans > ChooseBean
>> enter: play.MyTextField
>>
>> Get the exception seen at the end of this message. Seems that log4j is
>> doing something weird that NB detects as a problem (security manager?).
>>
>> I took a quick look at CreationFactory.createDefaultInstance(Class) it
>> does a weird dance with classloaders (yes plural), but there's
>> CreationDescriptor cd = getDescriptor(cls);
>> ...
>> Object instance = cd != null ?
>> cd.createDefaultInstance() :
>> cls.newInstance();
>>
>> And I was hoping there would be a way to get some BeanInfo thing (I
>> don't really know about BeanInfo's) as the CreationDescriptor but I
>> didn't find anything like that. And I don't really think that's the
>> problem.
>>
>> -ernie
>>
>>
>> This project was created with beanbinding plugin, but that's not
>> required to get the exception.
>>
>> INFO [org.netbeans.modules.form.MetaComponentCreator]: Failed to create
>> an instance of play.MyTextField class.
>> The class itself was loaded, but instantiating failed.
>> This typically happens due to an exception in constructor/initializer
>> code, or failure in loading an additional class needed by the component.
>> Check the attached exception.
>> java.lang.UnsupportedOperationException: No class provided, and an
>> appropriate one cannot be found.
>> at
>> org.apache.logging.log4j.LogManager.callerClass(LogManager.java:573)
>> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:598)
>> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:585)
>> at play.MyTextField.<init>(MyTextField.java:15)
>> at
>> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>>
>> Method)
>> at
>>
>> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
>> at
>>
>> java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
>> at
>>
>> java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
>> at
>>
>> java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
>> at
>>
>> java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
>> at java.base/java.lang.Class.newInstance(Class.java:645)
>> at
>>
>> org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:155)
>> at
>>
>> org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:227)
>> at
>> org.netbeans.modules.form.RADComponent.initInstance(RADComponent.java:166)
>>
>> The above stack is consistent no matter how the exception is exactly
>> generated (RADComponent.initInstance) get called from multiple places.
>>
>>
>> ---------------------------------------------------------------------
>> To unsubscribe, e-mail: dev-unsubscribe@netbeans.apache.org
>> For additional commands, e-mail: dev-help@netbeans.apache.org
>>
>> For further information about the NetBeans mailing lists, visit:
>> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>>
>>
>>
>>
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Re: Gui Builder fail when log4j
Posted by Christian Oyarzun <co...@oyarzun.net>.
Hi Ernie,
The classloader does support multi-release log4j jar file.
https://issues.apache.org/jira/browse/NETBEANS-3679
--Christian
On Sat, Feb 26, 2022 at 4:16 PM Ernie Rael <er...@raelity.com> wrote:
> Hi all,
>
> I'm looking at a problem between log4j and gui builder (not Matisse) for
> someone.
> NB13-rc3, jdk-17 (also fails with NB-12.2, jdk-15)
>
> The following trivial and tiny NB project runs fine (for example under
> the debugger).
> https://github.com/bpangburn/swingset/files/8146641/GuiFormTest.zip
>
> Comment out this line (log4j stuff) in the play.MyTextField constructor
> and all is well.
> final Logger logger = LogManager.getLogger();
>
> One way to reproduce the problem (if it doesn't just happen). Open
> NewJFrame.jav in the designer
> ContextMenu: AddFromPalette > Beans > ChooseBean
> enter: play.MyTextField
>
> Get the exception seen at the end of this message. Seems that log4j is
> doing something weird that NB detects as a problem (security manager?).
>
> I took a quick look at CreationFactory.createDefaultInstance(Class) it
> does a weird dance with classloaders (yes plural), but there's
> CreationDescriptor cd = getDescriptor(cls);
> ...
> Object instance = cd != null ?
> cd.createDefaultInstance() :
> cls.newInstance();
>
> And I was hoping there would be a way to get some BeanInfo thing (I
> don't really know about BeanInfo's) as the CreationDescriptor but I
> didn't find anything like that. And I don't really think that's the
> problem.
>
> -ernie
>
>
> This project was created with beanbinding plugin, but that's not
> required to get the exception.
>
> INFO [org.netbeans.modules.form.MetaComponentCreator]: Failed to create
> an instance of play.MyTextField class.
> The class itself was loaded, but instantiating failed.
> This typically happens due to an exception in constructor/initializer
> code, or failure in loading an additional class needed by the component.
> Check the attached exception.
> java.lang.UnsupportedOperationException: No class provided, and an
> appropriate one cannot be found.
> at
> org.apache.logging.log4j.LogManager.callerClass(LogManager.java:573)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:598)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:585)
> at play.MyTextField.<init>(MyTextField.java:15)
> at
> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
>
> Method)
> at
>
> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
> at
>
> java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at
>
> java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
> at
>
> java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
> at
>
> java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
> at java.base/java.lang.Class.newInstance(Class.java:645)
> at
>
> org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:155)
> at
>
> org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:227)
> at
> org.netbeans.modules.form.RADComponent.initInstance(RADComponent.java:166)
>
> The above stack is consistent no matter how the exception is exactly
> generated (RADComponent.initInstance) get called from multiple places.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@netbeans.apache.org
> For additional commands, e-mail: dev-help@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
>
Re: Gui Builder fail when log4j
Posted by Ernie Rael <er...@raelity.com>.
I'm guessing that Class.newInstance()'s constructor call doesn't have a
caller on the stack. So log4j throws this exception because it can't
find it's caller. Looks like the convienient "LogManager.getLogger()"
can't be used in a component's constructor/static-init if that component
is going to be used as a gui bean. Sigh!
-ernie
On 2/26/22 1:15 PM, Ernie Rael wrote:
> Hi all,
>
> I'm looking at a problem between log4j and gui builder (not Matisse)
> for someone.
> NB13-rc3, jdk-17 (also fails with NB-12.2, jdk-15)
>
> The following trivial and tiny NB project runs fine (for example under
> the debugger).
> https://github.com/bpangburn/swingset/files/8146641/GuiFormTest.zip
>
> Comment out this line (log4j stuff) in the play.MyTextField
> constructor and all is well.
> final Logger logger = LogManager.getLogger();
>
> One way to reproduce the problem (if it doesn't just happen). Open
> NewJFrame.jav in the designer
> ContextMenu: AddFromPalette > Beans > ChooseBean
> enter: play.MyTextField
>
> Get the exception seen at the end of this message. Seems that log4j is
> doing something weird that NB detects as a problem (security manager?).
>
> I took a quick look at CreationFactory.createDefaultInstance(Class) it
> does a weird dance with classloaders (yes plural), but there's
> CreationDescriptor cd = getDescriptor(cls);
> ...
> Object instance = cd != null ?
> cd.createDefaultInstance() :
> cls.newInstance();
>
> And I was hoping there would be a way to get some BeanInfo thing (I
> don't really know about BeanInfo's) as the CreationDescriptor but I
> didn't find anything like that. And I don't really think that's the
> problem.
>
> -ernie
>
>
> This project was created with beanbinding plugin, but that's not
> required to get the exception.
>
> INFO [org.netbeans.modules.form.MetaComponentCreator]: Failed to
> create an instance of play.MyTextField class.
> The class itself was loaded, but instantiating failed.
> This typically happens due to an exception in constructor/initializer
> code, or failure in loading an additional class needed by the
> component. Check the attached exception.
> java.lang.UnsupportedOperationException: No class provided, and an
> appropriate one cannot be found.
> at
> org.apache.logging.log4j.LogManager.callerClass(LogManager.java:573)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:598)
> at org.apache.logging.log4j.LogManager.getLogger(LogManager.java:585)
> at play.MyTextField.<init>(MyTextField.java:15)
> at
> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native
> Method)
> at
> java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:77)
> at
> java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
> at
> java.base/java.lang.reflect.Constructor.newInstanceWithCaller(Constructor.java:499)
> at
> java.base/java.lang.reflect.ReflectAccess.newInstance(ReflectAccess.java:128)
> at
> java.base/jdk.internal.reflect.ReflectionFactory.newInstance(ReflectionFactory.java:347)
> at java.base/java.lang.Class.newInstance(Class.java:645)
> at
> org.netbeans.modules.form.CreationFactory.createDefaultInstance(CreationFactory.java:155)
> at
> org.netbeans.modules.form.RADComponent.createBeanInstance(RADComponent.java:227)
> at
> org.netbeans.modules.form.RADComponent.initInstance(RADComponent.java:166)
>
> The above stack is consistent no matter how the exception is exactly
> generated (RADComponent.initInstance) get called from multiple places.
>
>
> ---------------------------------------------------------------------
> To unsubscribe, e-mail: dev-unsubscribe@netbeans.apache.org
> For additional commands, e-mail: dev-help@netbeans.apache.org
>
> For further information about the NetBeans mailing lists, visit:
> https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists
>
>
>
>
---------------------------------------------------------------------
To unsubscribe, e-mail: dev-unsubscribe@netbeans.apache.org
For additional commands, e-mail: dev-help@netbeans.apache.org
For further information about the NetBeans mailing lists, visit:
https://cwiki.apache.org/confluence/display/NETBEANS/Mailing+lists