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https://issues.apache.org/jira/browse/WW-4310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15724152#comment-15724152
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Tran Anh Tung commented on WW-4310:
-----------------------------------
I may have same problem in production environment.
Same environment:
IBM AIX 6.1.0.0
Websphere Application server 7.0.0.21
We have 2 server and got random problem both servers after Websphere
Application server restart.
We added log to check web form data and action's bean's data.
Data from web form data is normal but action's bean's data is null.
This problem is random at different pages at different times and remain till we
restart Websphere Application server.
In our strust.xml setting their is no interceptor and in web.xml have 2 filters.
The web form data log is added to the first filter.
Ognl.jar is in WAR scope.
Please provide how we can trace when and how web form data change to action's
bean's data in struts.
> All form submission failed due to ognl.OgnlException: target is null for
> setProperty
> ------------------------------------------------------------------------------------
>
> Key: WW-4310
> URL: https://issues.apache.org/jira/browse/WW-4310
> Project: Struts 2
> Issue Type: Bug
> Components: Core Interceptors, Expression Language, Integration
> Affects Versions: 2.3.15.1
> Environment: IBM AIX 6.1.0.0
> Websphere Application server 7.0.0.21
> Websphere Portal server 7.0.0.2
> Reporter: chenlin
> Fix For: Future
>
>
> Hi Lukasz Lenart ,
> We are using struts-portlet framework in Websphere Portal server clustering (
> 1 Deploy Manager and 4 Portal servers instances) in production.
> Currently there is one issue happen in one of 4 servers randomly. The
> exception is showing login form in set Property is null in one server, but at
> that time other 3 servers are working fine. This issue can happen in any one
> of 4 servers in our production environment. We have also raised few PMR to
> IBM team for this issue. But IBM said it is not caused by them. We need
> your help to check if any possible way to cause this issue in struts.
> If possible, pls share us your avaliable timing and contact, we would like to
> have a call with you and IBM support to identify root cause.
>
> ===IBM response=============
> When I refer the past PMR ( 18484,000,834) we shared on all the findings and
> waiting for your Application team feedback, as such I don't think any
> further action pending on IBM Support end. do check with Application team
> and can we ask Application team not using
> the code what Application team using is not an IBM API / service code "
>
> com.opensymphony.xwork2.util.logging.commons.CommonsLogger" , good to
> check with Application team to discuss with respective vender.
>
> The above error code from strut's application code, check with Application
> support and ask them to explore further.
> As I hope we all are in same page now, as PMR 20364,000,834 & PMR
> 18184,000,834 - findings Pointing same struts2 loging function, even
> application team explore why they enabled this log ? ,how this impacted the
> Application Interface page with user login error.
> =====Error Log========
> [3/18/14 1:58:12:142 GMT+08:00] 00000062 OgnlValueStac W
> com.opensymphony.xwork2.util.logging.commons.CommonsLogger warn Error setting
> expression 'loginForm.userId' with value '[Ljava.lang.String;@1560156'
> ognl.OgnlException: target is null for
> setProperty(null, "userId", [Ljava.lang.String;@1560156)
> at ognl.OgnlRuntime.setProperty(OgnlRuntime.java:2326)
> at ognl.ASTProperty.setValueBody(ASTProperty.java:127)
> at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
> at ognl.SimpleNode.setValue(SimpleNode.java:301)
> at ognl.ASTChain.setValueBody(ASTChain.java:227)
> at ognl.SimpleNode.evaluateSetValueBody(SimpleNode.java:220)
> at ognl.SimpleNode.setValue(SimpleNode.java:301)
> at ognl.Ognl.setValue(Ognl.java:737)
> at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:234)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.trySetValue(OgnlValueStack.java:183)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:170)
> at
> com.opensymphony.xwork2.ognl.OgnlValueStack.setParameter(OgnlValueStack.java:148)
> at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:318)
> at
> com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:231)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
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