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Date: Wed, 2 Sep 2015 06:46:46 +0000 (UTC)
From: "Lukasz Lenart (JIRA)" <jira@apache.org>
To: issues@struts.apache.org
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Subject: [jira] [Updated] (WW-4542) FreemarkerManager class throws null
 pointer exception
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     [ https://issues.apache.org/jira/browse/WW-4542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart updated WW-4542:
------------------------------
    Fix Version/s: 2.3.x

> FreemarkerManager class throws null pointer exception 
> ------------------------------------------------------
>
>                 Key: WW-4542
>                 URL: https://issues.apache.org/jira/browse/WW-4542
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - Tags
>    Affects Versions: 2.3.24
>         Environment: Win7
> WebLogic 2.1.3
> JDK 1.7
>            Reporter: Rin Saunders
>            Priority: Minor
>             Fix For: 2.3.x
>
>
> Am getting a null pointer error in the FreemarkerManager class. It occurs in the setContainer method. The code below seems to assume that getInstanceNames returns an empty set if there are no matches. In fact, it returns a null, which is legit according to the XWork doc. This occurs in Freemarker 2.3.23 under WebLogic 12.1.3.
> {code:java}
>     Map<String, TagLibrary> oldMap = new HashMap<String, TagLibrary>();
>     Set<String> oldPrefixes = container.getInstanceNames(TagLibrary.class);
>     for (String prefix : oldPrefixes) {
>         oldMap.put(prefix, container.getInstance(TagLibrary.class, prefix));
> {code}
> Not sure if this affects the presentation of Struts2 views. Is there a workaround or fix?



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