[jira] [Resolved] (WW-4542) FreemarkerManager class throws null pointer exception

["Lukasz Lenart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-4542?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart resolved WW-4542.
-------------------------------
       Resolution: Not A Problem
    Fix Version/s:     (was: 2.3.x)
                   2.3.25

> 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 12.1.3
> JDK 1.7
>            Reporter: Rin Saunders
>            Priority: Minor
>             Fix For: 2.3.25
>
>         Attachments: Part 0.png, Part 1.png, Part 2.png, jetty.png, screenshot.png, wls10.png, wls12.png
>
>
> 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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