//java.lang.NullPointerException at
org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:792)..(UIBean
fails when accessing tagNames Map in Map)
-----------------------------------------------------------------------------------------------------------------------------------------------------------
Key: WW-3062
URL: https://issues.apache.org/struts/browse/WW-3062
Project: Struts 2
Issue Type: Bug
Components: Core Actions
Affects Versions: 2.1.6
Environment: (UIBean fails when accessing tagNames Map in Map)
TC 6.0.14
J2SE 1.6.10
Struts 2.1.6
Reporter: Martin Gainty
Priority: Minor
org.apache.struts2.components.UIBeans fails when accessing tagNames Map via
parameters from evaluateParams
public void evaluateParams() {
.......
//please read this caveat about using java.util.Map *from java.util.Map
JavaDoc*
//each key can map to at most ONE value.
try
{
PageContext pageContext = ServletActionContext.getPageContext();
java.util.ArrayList<String> tags=new java.util.ArrayList(50); //this
will be the newly constructed List
if (form != null )
{
addParameter("form", form.getParameters());
if ( name != null )
{
// form.getParameters is a Map so you are accessing an inner Map in
a Map?
// List tags = (List) form.getParameters().get("tagNames");
try
{ //go straight to Request ..pull the parameters via
getParameterMap
for (java.util.Iterator i =
pageContext.getRequest().getParameterMap().values().iterator(); i.hasNext(); )
{
tags.add( i.next().toString() ); //this
will be a live form-field tag
}
}
catch(java.lang.ArrayIndexOutOfBoundsException aie)
{ //prevent walk beyond the end
System.out.println("ArrayIndexException has
been produced message = "+aie.getMessage() );
log.debug(aie.getMessage() );
}
//java.lang.NullPointerException at
org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:792)
// tags.add(name);
}
}
}
catch(java.lang.NullPointerException npe1)
{
System.out.println("Eating the exception in UIBean");
log.debug( npe1.getMessage() )
}
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