Liferay 7 Freemarker Template. staticUtil has evaluated to NULL or missing - Tried to get JournalArticle's Categories

问题

Hi fellow Liferay'ers,

I'm trying to get the categories of a journalArticle with a Freemarker template.

I tried this code:

<#assign journalArticleId = .vars['reserved-article-id'].data>
<#assign journalArticleResourceLocalServiceUtil = staticUtil["com.liferay.portlet.journal.service.JournalArticleResourceLocalServiceUtil"]>
<#assign assetCategoryLocalServiceUtil = staticUtil["com.liferay.portlet.asset.service.AssetCategoryLocalServiceUtil"]>

<#assign articleResourcePK = journalArticleResourceLocalServiceUtil.getArticleResourcePrimKey(groupId, journalArticleId)/>
<#assign categoryList=assetCategoryLocalServiceUtil.getCategories("com.liferay.portlet.journal.model.JournalArticle",articleResourcePK) >

<#list categoryList as categoryList>
${categoryList.getName()}
</#list>

I also added This lines to the portal-setup-wizzard.properties

freemarker.engine.restricted.classes=
freemarker.engine.restricted.variables=
freemarker.engine.restricted.packages=

When i execute the code it throws this error:

08:26:30,582 ERROR [http-nio-8080-exec-10][runtime:60] Error executing FreeMarker template
FreeMarker template error:
The following has evaluated to null or missing:
==> staticUtil  [in template "20202#20246#41671" at line 14, column 51]

----
Tip: If the failing expression is known to be legally refer to something that's sometimes null or missing, either specify a default value like myOptionalVar!myDefault, or use <#if myOptionalVar??>when-present<#else>when-missing</#if>. (These only cover the last step of the expression; to cover the whole expression, use parenthesis: (myOptionalVar.foo)!myDefault, (myOptionalVar.foo)??
----

----
FTL stack trace ("~" means nesting-related):
        - Failed at: #assign journalArticleResourceLocalSe...  [in template "20202#20246#41671" at line 14, column 1]
----

Java stack trace (for programmers):
----

Does anyone has an Idea what I am doing wrong here? Thank you in advance.

回答1:

in liferay 7 they have change the setting of freemarker engine now the configurazion is in the control panel

Control Panel -> Configuration -> System Settings
-> Foundation -> FreeMarker Engine -> Restricted Variables

you have to remove here the restrict varibles

The package of object are changed in liferay 7 so the correcti freemarker in this case is

<#assign journalArticleId = .vars['reserved-article-id'].data>
<#assign journalArticleResourceLocalServiceUtil = staticUtil["com.liferay.journal.service.JournalArticleResourceLocalServiceUtil"]>
<#assign assetCategoryLocalServiceUtil = staticUtil["com.liferay.asset.kernel.service.AssetCategoryLocalServiceUtil"]>

<#assign articleResourcePK = journalArticleResourceLocalServiceUtil.getArticleResourcePrimKey(groupId, journalArticleId)/>
<#assign categoryList=assetCategoryLocalServiceUtil.getCategories("com.liferay.journal.model.JournalArticle",articleResourcePK) >

<#list categoryList as categoryList>
${categoryList.getName()}
</#list>

来源：https://stackoverflow.com/questions/38241049/liferay-7-freemarker-template-staticutil-has-evaluated-to-null-or-missing-tri

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