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https://issues.apache.org/jira/browse/WW-5452?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Work on WW-5452 started by Lukasz Lenart.
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> Freemarker error with empty boolean parameter
> ---------------------------------------------
>
> Key: WW-5452
> URL: https://issues.apache.org/jira/browse/WW-5452
> Project: Struts 2
> Issue Type: Bug
> Components: Expression Language
> Affects Versions: 7.0.0
> Reporter: Johannes Geppert
> Assignee: Lukasz Lenart
> Priority: Major
> Fix For: 7.0.0
>
>
> Switching to latest milestone release for version 7.0.0 resulted in
> freemarker errors when building Struts jQuery Plugin.
>
> {code:java}
> FreeMarker template error:For "#if" condition: Expected a boolean, but this
> has evaluated to an extended_hash+string
> (org.apache.struts2.dispatcher.Parameter$Empty wrapped into
> f.e.b.GenericObjectModel):==> parameters.loadFromCdn!false [in template
> "template/jquery/head.ftl" at line 70, column 6]
> ----FTL stack trace ("~" means nesting-related): - Failed at: #if
> parameters.loadFromCdn!false [in template "template/jquery/head.ftl" at line
> 70, column 1]----
> Java stack trace (for programmers):----freemarker.core.NonBooleanException:
> [... Exception message was already printed; see it above ...] at
> freemarker.core.Expression.modelToBoolean(Expression.java:195) at
> freemarker.core.Expression.evalToBoolean(Expression.java:178) at
> freemarker.core.Expression.evalToBoolean(Expression.java:163) at
> freemarker.core.IfBlock.accept(IfBlock.java:50) at
> freemarker.core.Environment.visit(Environment.java:344) at
> freemarker.core.Environment.visit(Environment.java:350) at
> freemarker.core.Environment.process(Environment.java:323) at
> freemarker.template.Template.process(Template.java:383) at
> org.apache.struts2.components.template.FreemarkerTemplateEngine.renderTemplate(FreemarkerTemplateEngine.java:154)
> at org.apache.struts2.components.UIBean.mergeTemplate(UIBean.java:594)
> at org.apache.struts2.components.UIBean.end(UIBean.java:553) at
> org.apache.struts2.views.jsp.ComponentTagSupport.doEndTag(ComponentTagSupport.java:39)
> at
> org.apache.jsp.WEB_002dINF.content.uncompressed.div.events_jsp._jspx_meth_sj_005fhead_005f0(events_jsp.java:178)
> at
> org.apache.jsp.WEB_002dINF.content.uncompressed.div.events_jsp._jspService(events_jsp.java:135)
> at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
> at jakarta.servlet.http.HttpServlet.service(HttpServlet.java:587)
> {code}
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