ImportAttributeTag throws a NullPointerException when ignore=true and the
attribute value is not available
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Key: STR-2996
URL: https://issues.apache.org/struts/browse/STR-2996
Project: Struts 1
Issue Type: Bug
Components: Tiles
Affects Versions: 1.3.5
Environment: All
Reporter: Josh Landin
This bug is from regression caused by the fix for STR-2809.
Given the JSP with:
<tiles:importAttribute name="doesntExist" ignore="true"/>
The following exception occurs:
java.lang.NullPointerException
at java.util.Hashtable.put(Hashtable.java:393)
at
org.apache.jasper.runtime.PageContextImpl.setAttribute(PageContextImpl.java:238)
at
org.apache.struts.tiles.taglib.ImportAttributeTag.doStartTag(ImportAttributeTag.java:167)
This is due to the ImportAttributeTag class incorrectly calling
pageContext.setAttribute with a null value. This call was previously
unreachable prior to the fix for STR-2809 which eliminated the SKIP_BODY
returns when ignore=true.
The behavior of the PageContext implementation is consistent with the Servlet
2.2 Specification:
http://java.sun.com/products/servlet/2.2/javadoc/javax/servlet/jsp/PageContext.html#setAttribute(java.lang.String,%20java.lang.Object,%20int)
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