[jira] [Commented] (WW-4182) NullPointerException in DefaultUrlHelper

["ASF subversion and git services (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WW-4182?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13798881#comment-13798881 ] 

ASF subversion and git services commented on WW-4182:
-----------------------------------------------------

Commit 1533346 from [~lukaszlenart] in branch 'struts2/trunk'
[ https://svn.apache.org/r1533346 ]

WW-4182 Adds additional check to avoid NPE

> NullPointerException in DefaultUrlHelper
> ----------------------------------------
>
>                 Key: WW-4182
>                 URL: https://issues.apache.org/jira/browse/WW-4182
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Core Actions
>    Affects Versions: 2.3.15.1
>            Reporter: Thomas Goettlich
>            Assignee: Lukasz Lenart
>             Fix For: 2.3.16
>
>   Original Estimate: 1h
>  Remaining Estimate: 1h
>
> In the method ??DefaultUrlHelper.buildParametersString(...)?? a NullPointerException occurs whenever an array or iterable parameter containing null elements is passed.
> The problem seems to be lines 214 and 244, which look the same: 
> {code}
> link.append(buildParameterSubstring(name, paramValue.toString()));
> {code}
> For null parameters an empty string is written to the url:
> {code}
> value != null ? value.toString() : StringUtils.EMPTY
> {code}
> A fix would be to check ??paramValue?? for null as well, thus allowing arrays or iterables to contain null elements.



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