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https://issues.apache.org/jira/browse/WW-4873?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16290497#comment-16290497
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ASF GitHub Bot commented on WW-4873:
------------------------------------
yasserzamani opened a new pull request #192: WW-4873 Makes ActionInvocation not
serializable and InvocationSessionStore$InvocationContext transient
URL: https://github.com/apache/struts/pull/192
⚠️ For simpler review, please review each commit separately.
❓ Why `serialize` and `deserialize` methods of `ActionInvocation` deleted?
`ActionInvocation` is a large complex object which contains request, response,
container, value stack and action context. It's hard to maintain it
serializable e.g. user may want to store a private not serializable object in
action. And It's not a good practice ([CWE-579: J2EE Bad Practices:
Non-serializable Object Stored in
Session](https://cwe.mitre.org/data/definitions/579.html)).
ℹ️ I know I also deleted `that.container = actionContext.getContainer();`
(replacing restored invocation container with current container) with
`ActionInvocation.deserialize` method. I saw it's not needed and even it's
better for restored default invocation to work with itself stored container to
keep consistency. Anyway currently it's really not needed because only
`TokenSessionStoreInterceptor` uses it and it only passes the invocation to
result and result is not aware about `DefaultActionInvocation` (only knows
`ActionInvocation`):
```java
if ((result != null) && (savedInvocation.getProxy().getExecuteResult())) {
result.execute(savedInvocation);
}
```
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> NotSerializableException - org.apache.struts2.dispatcher.StrutsRequestWrapper
> -----------------------------------------------------------------------------
>
> Key: WW-4873
> URL: https://issues.apache.org/jira/browse/WW-4873
> Project: Struts 2
> Issue Type: Bug
> Affects Versions: 2.5.13
> Reporter: Michael Hum
> Assignee: Yasser Zamani
> Fix For: 2.5.15
>
>
> We are attempting to test session replication on our websphere servers but
> run into the given error when websphere tries to serialize the session.
> {code}
> [10/18/17 10:33:38:094 EDT] 00000335 WASSession E MTMBuffWrapper getBytes
> write object exception. e= java.io.NotSerializableException:
> org.apache.struts2.dispatcher.StrutsRequestWrapper
> {code}
> It appears the ActionInvocation stores the ActionContext which stores the
> offending property: com.opensymphony.xwork2.dispatcher.HttpServletRequest -->
> StrutsRequestWrapper
> After a little digging we narrowed it down to our use of the
> TokenSessionStoreInterceptor which stores the value in the session and uses
> it to redirect the failed request to the original one. Is this
> intended/expected? Or is there no requirement that the contents in the
> session be serializable - in which case we would have to look to our own
> solution.
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