In Struts2 named variable not getting cleared when redirected to another action

Question

I am having a weird problem when redirecting to an action from another action. In short the named variable captured in the first action (from which I am redirecting) is still preserved somehow in the value stack and it is overwriting the same named variable in the second action. I will explain via some code.

<action name="r/{seoURL}" class="ReportsAction"
    method="displayReport">
    ...
    <result name="REDIRECT_TO_NEXT_ACTION" type="redirectAction">
        <param name="actionName">s/${seoURLForRedirect}</param>
        <param name="namespace">/reports</param>
    </result>
    ...
</action>

I am setting the variable ${seoURLForRedirect} in ReportsAction before returning. I have the following mapping for the second action.

<action name="s/{seoURL}" class="ReportSeriesAction"
    method="displayReportSeries">
    ...
</action>

As you can see I have same named variable in my second action seoURL. This value is set to the value as found in the first action. I fail to understand why is the value stack still maintaining seoURL value set in the first action. Especially since I am over writing it in my redirect result params.

Any help appreciated.

Answer 1

Based on your class action attribute, I'm assuming you're using the Spring plugin.

Actions must be declared as scope="prototype"/non-singleton to be instantiated per-request.

If they're not, you're using a singleton, and properties will be maintained across requests.

I've never tried to set a redirectAction's actionName to a wildcard that points to another wildcarded action, so I'm not sure about the second part of the question.