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Posted to issues@struts.apache.org by "Musachy Barroso (JIRA)" <ji...@apache.org> on 2009/03/27 04:19:02 UTC
[jira] Resolved: (WW-3062) //java.lang.NullPointerException at
org.apache.struts2.components.UIBean.evaluateParams(UIBean.java:792)..(UIBean
fails when accessing tagNames Map in Map)
[ https://issues.apache.org/struts/browse/WW-3062?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Musachy Barroso resolved WW-3062.
---------------------------------
Resolution: Incomplete
Please reopen with a testcase to reproduce. I honestly have no idea what that code is about.
> //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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