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From Michael Muller <mmul...@theworld.com>
Subject Re: ClassCastException using the DynaValidatorForm
Date Mon, 07 Jul 2003 21:58:58 GMT

All my fields are strings.

Here's some of my struts-config.xml:

<form-bean name="foo" type="org.apache.struts.validator.DynaValidatorForm">
   <form-property name="pbTitle" type="java.lang.String" />
   <form-property name="pbAge" type="java.lang.String" />
   <form-property name="pbFirstName" type="java.lang.String" />
   <form-property name="pbLastName" type="java.lang.String" />
...
</form-bean>


Adam Hardy wrote:
> I got ClassCast exceptions, but not necessarily this one, because I was 
> using field class types other than Strings in my DynaActionForm. 
> DynaValidator will only validate strings, btw.
> 
> Adam
> 
> Michael Muller wrote:
> 
>>
>> I've got the validation framework working for me using my own form 
>> bean which is derived from ValidatorForm.  I changed the form bean to 
>> be a DynaValidatorForm, and now I get a ClassCastException, the guts 
>> of which is appended below.
>>
>> What gives?  Am I using the wrong validator form class?  Did I neglect 
>> to make some other configuration change?
>>
>> I'm using Tomcat 4.1, Struts 1.1 final, and jdk 1.4.1.
>>
>>   -- Mike
>>
>>
>>
>> java.lang.ClassCastException
>>     at 
>> org.apache.struts.util.RequestUtils.createActionForm(RequestUtils.java:783) 
>>
>>     at 
>> org.apache.struts.action.RequestProcessor.processActionForm(RequestProcessor.java:364)

>>
>>     at 
>> org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:253) 
>>
>>     at 
>> org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
>>     at 
>> org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
>>     at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
>>     at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
>>     at 
>> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)

>>
>>     at 
>> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)

>>
>>     at 
>> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:260)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) 
>>
>>     at 
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>>     at 
>> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) 
>>
>>     at 
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>>     at 
>> org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2415) 
>>
>>     at 
>> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:180) 
>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)

>>
>>     at 
>> org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)

>>
>>     at 
>> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:172) 
>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:641)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) 
>>
>>     at 
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>>     at 
>> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:174)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:643)

>>
>>     at 
>> org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:480) 
>>
>>     at 
>> org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:995)
>>     at 
>> org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:223)
>>     at 
>> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:432) 
>>
>>     at 
>> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:386)

>>
>>     at 
>> org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:534) 
>>
>>     at 
>> org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:530)

>>
>>     at java.lang.Thread.run(Thread.java:536)
>>
>>
>>
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>>
> 
> 
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