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https://issues.apache.org/jira/browse/WW-4310?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15928868#comment-15928868
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Yasser Zamani commented on WW-4310:
-----------------------------------
[~habajwa], I think [~aleksandr-m] meant this section of [Struts 2.3 to 2.5
migration|https://struts.apache.org/docs/struts-23-to-25-migration.html]
{noformat}
Field names
If you have field names which starts with single lower case letter, for example:
private String sTrng;
public String getSTrng() {...}
public void setSTrng(String str) {...}
change accessors to getsTrng and setsTrng.
Or better yet, change field names to not contain single lower case letter:
private String strng;
public String getStrng() {...}
public void setStrng(String str) {...}
For additional info see WW-3909.
{noformat}
So please try changing getESignatureVO to geteSignatureVO and setESignatureVO
to seteSignatureVO.
I also by **type hierarchy**, I meant something as below for your
`eSignatureVO` object
!http://help.eclipse.org/luna/topic/org.eclipse.jdt.doc.user/gettingStarted/images/quicktype_dialogs.png!
thank you :)
> 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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