[
https://issues.apache.org/jira/browse/WW-4310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13946256#comment-13946256
]
chenlin commented on WW-4310:
-----------------------------
Hi Lukasz Lenart ,
Do you use sticky-session for cluster configuration?
[CHENLIN] sticky-session is used. All user requests are coming to one server by
load balance ( IBM Http server)
How loginForm is created?
[CHENLIN] We create loginForm into our Action which extend Action support
Class CustomAction extends ActionSupport implements SessionAware, RequestAware
{
private LoginForm loginForm;
public LoginForm getLoginForm() {
return loginForm;
}
public void setLoginForm(LoginForm loginForm) {
this.loginForm = loginForm;
}
}
Is default constructor present?
[CHENLIN] No. we don't put following default constructor into LoginForm. I
think it will have default one.
public LoginForm (){
}
Have you stress-tested your application?
Maybe it only happens under heavy load?
[CHENLIN] Yes, during stress-testing, no such issue reports
Have you tried to run application in non-clustered environment?
[CHENLIN] Our SIT evironment is clustered within 1 server. It is also having
similar issue after sometime.
If the application works in three of four nodes of cluster I assume it has
something to do with clustering and replication.
> 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
>
> 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)
--
This message was sent by Atlassian JIRA
(v6.2#6252)
