ServletUrlRenderer.renderFormUrl NPE moving from 2.0.14 to 2.1.16

[Derrick Koes]

I'm upgrading to use the latest best available struts 2 (I use
freemarker in both 2.0.14 and the new 2.1.16) and I am hitting a problem
with the form tag I believe.

 

ServletUrlRenderer.renderFormUrl method accesses the actionMapper
member, but this member is null.  Hence, I get the stack trace NPE
listed.

Am I missing something in configuration?  How/where is the actionMapper
as used on line 128 supposed to be initialized?

 

Relevant parts are:

 

<interceptor-stack name="skillportAdminValidationStack">

                <interceptor-ref name="timer"/>

                <interceptor-ref name="exception"/>

                <!-- skillport must be before servletConfig -->

                <interceptor-ref name="skillport"/>

                <interceptor-ref name="servletConfig"/>

                <interceptor-ref name="prepare"/>

                <interceptor-ref name="i18n"/>

                <interceptor-ref name="chain"/>

                <interceptor-ref name="debugging"/>

                <interceptor-ref name="profiling"/>

                <interceptor-ref name="scopedModelDriven"/>

                <interceptor-ref name="modelDriven"/>

                <interceptor-ref name="fileUpload"/>

                <interceptor-ref name="checkbox"/>

                <interceptor-ref name="staticParams"/>

                <interceptor-ref name="params">

                    <param name="excludeParams">dojo\..*</param>

                </interceptor-ref>

                <interceptor-ref name="conversionError"/>

                <interceptor-ref name="validation">

                    <param name="excludeMethods">advGroup, help</param>

                </interceptor-ref>

                <interceptor-ref name="workflow">

                    <param name="excludeMethods">advGroup, help</param>

                </interceptor-ref>

            </interceptor-stack>

 

 

<package name="admin" namespace="/admin" extends="skillport-default">

 

 

<action name="NewUser"
class="com.skillsoft.skillport.fe.admin.userandgroup.UserAction"
method="setup">

            <param name="pageInfo">user</param>

            <result name="success" type="freemarker">

                <param
name="location">/WEB-INF/ftl/admin/userandgroup/usercreate.ftl</param>

            </result>

        </action>

 

 

 

java.lang.NullPointerException

            at
org.apache.struts2.components.ServletUrlRenderer.renderFormUrl(ServletUr
lRenderer.java:128)

            at
org.apache.struts2.components.PortletUrlRenderer.renderFormUrl(PortletUr
lRenderer.java:123)

            at
org.apache.struts2.components.Form.populateComponentHtmlId(Form.java:228
)

            at
org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:784)

            at
org.apache.struts2.components.ClosingUIBean.start(ClosingUIBean.java:57)

            at
org.apache.struts2.views.freemarker.tags.CallbackWriter.onStart(Callback
Writer.java:73)

            at freemarker.core.Environment.visit(Environment.java:294)

            at freemarker.core.UnifiedCall.accept(UnifiedCall.java:130)

            at freemarker.core.Environment.visit(Environment.java:208)

            at freemarker.core.MixedContent.accept(MixedContent.java:92)

            at freemarker.core.Environment.visit(Environment.java:208)

            at freemarker.core.Environment.process(Environment.java:188)

            at freemarker.template.Template.process(Template.java:237)