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http://issues.apache.org/struts/browse/WW-1581?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Don Brown resolved WW-1581.
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Resolution: Not A Problem
Assignee: Don Brown
What you want to look at is the I18NInterceptor -
http://cwiki.apache.org/WW/i18n-interceptor.html It allows you easier control
over setting the locale per session. The double converter properly uses the
set locale for the request.
> Problems with handling of Double in the request parameters
> ----------------------------------------------------------
>
> Key: WW-1581
> URL: http://issues.apache.org/struts/browse/WW-1581
> Project: Struts 2
> Issue Type: Bug
> Components: Actions
> Affects Versions: 2.0.2
> Environment: windows XP [Polish locale], tomcat 5.5.17, Java 6
> Reporter: Dariusz Wojtas
> Assigned To: Don Brown
> Priority: Critical
> Fix For: 2.0.3
>
>
> I have a property in my form
> private Double someValue;
> with get/set methods
> Then I display it on my form
> <s:textfield name="someValue" cssStyle="width: 100px;"/>
> fill some value: 1234
> and submit the form [Firefox]
> the URL looks like this:
> /my.action?someValue=1234.0
> and is automatically generated by the browser.
> On the console I get stacktrace and no hint what is going on:
> java.lang.NullPointerException
> at
> com.opensymphony.xwork2.DefaultActionInvocation.createResult(DefaultActionInvocation.java:197)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:337)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
> at
> com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:115)
> at
> com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:86)
> at
> com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
> at
> com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:217)
> at
> com.opensymphony.xwork2.util.profiling.UtilTimerStack.profile(UtilTimerStack.java:455)
> at
> com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:216)
> at
> com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:123)
> at
> com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:219)
> at
> com.opensymphony.xwork2.DefaultActionInvocation$2.doProfiling(DefaultActionInvocation.java:217)
> (A bit related to WW-1577)
> If I change URL to one of:
> /my.action?someValue=1234,0 [colon instead of dot]
> /my.action?someValue=1234
> then it works.
> IE 6 does not add '.0' if the number is an integer.
> But if I add it by hand:
> 1234.5 [english user using my polish server]
> then if fails.
> Most likely the Double handler initializes itself with the machine specific
> locale (in Poland colon is the separator for doubles) and it fails.
> In fact this is a highly critical issue if this cannot accept simple numeric
> value on non english server machine.
> Solution?
> I am not sure if this is not in conflict with some other conditions, but
> possibly the Double converter should use one specific locale and try to
> convert input data first to be compatible.
> For example use locale ENGLISH, and try to format the input strings by
> replacing comma with dot.
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