struts2 interceptor problems

Question

I am new to struts2, prior to this I have been using struts1.2, Spring and Hibernate combination. I have just started using Struts2,Spring and Hibernate application, but I seem to be plagued with interceptor exceptions,

There are two error which keep happening, all in different scenarios

1) 2010-07-26 19:50:58,031 ERROR org.apache.struts2.dispatcher.Dispatcher.error:27 - Could not find action or result No result defined for action com.inrev.bm.action.IRCampaignMgmtAction and result input at com.opensymphony.xwork2.DefaultActionInvocation.executeResult(DefaultActionInvocation.java:364) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:266) at com.opensymphony.xwork2.validator.ValidationInterceptor.doIntercept(ValidationInterceptor.java:252) at org.apache.struts2.interceptor.validation.AnnotationValidationInterceptor.doIntercept(AnnotationValidationInterceptor.java:68) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) at com.opensymphony.xwork2.interceptor.ConversionErrorInterceptor.intercept(ConversionErrorInterceptor.java:122) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195) at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:87) at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:237) at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:195)

2) 2010-07-26 22:09:22,779 DEBUG com.opensymphony.xwork2.interceptor.ParametersInterceptor.debug:57 - Setting params session => [ {"session_key":"djshjhdfkjhdjhuhhhgfhg-1133902930","uid":1133902930,"expires":0,"secret":"fjhfhlkasjdhfkdsjfhjhyhfhdjhfjkdh","sig":"hfjdfhljksdfhjkasdhfjhdfjhakfjnmx,nvds"} ] 2010-07-26 22:09:22,780 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Property: session 2010-07-26 22:09:22,781 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - Class: com.inrev.bm.action.IRFacebookAction 2010-07-26 22:09:22,797 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - converter is null for property session. Mapping size: 0 2010-07-26 22:09:22,797 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - field-level type converter for property [session] = none found 2010-07-26 22:09:22,798 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - global-level type converter for property [session] = none found 2010-07-26 22:09:22,799 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:57 - falling back to default type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter@18a62f6] 2010-07-26 22:09:22,804 DEBUG com.opensymphony.xwork2.conversion.impl.XWorkConverter.debug:61 - unable to convert value using type converter [com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter] Cannot create type interface java.util.Map from value {"session_key":"6e2ecfba81fc0e9b889a80021133902930","uid":1133902930,"expires":0,"secret":" fjhfhlkasjdhfkdsjfhjhyhfhdjhfjkd","sig":"fe455338f9d869e589939d9c8dcdccb7"} - [unknown location] at com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter.convertValue(XWorkBasicConverter.java:141) at com.opensymphony.xwork2.conversion.impl.XWorkBasicConverter.convertValue(XWorkBasicConverter.java:135) at com.opensymphony.xwork2.conversion.impl.XWorkConverter.convertValue(XWorkConverter.java:323) at com.opensymphony.xwork2.ognl.OgnlTypeConverterWrapper.convertValue(OgnlTypeConverterWrapper.java:28) at ognl.OgnlRuntime.getConvertedType(OgnlRuntime.java:1040) at ognl.OgnlRuntime.getConvertedTypes(OgnlRuntime.java:1057) at ognl.OgnlRuntime.getConvertedMethodAndArgs(OgnlRuntime.java:1083)

I can make out that the first error is related to Validator interceptor and the second one is related to Parameter convertor, but I cannot seem to figure out how I can fix them. In the second exception all the parameter values are being sent from facebook. Help would be highly appreciated.

Regards, Rohit

Pat Pat · Accepted Answer · 2010-07-26T17:42:05

I can help you with the first exception. You need to make sure your action mapping for com.inrev.bm.action.IRCampaignMgmtAction has an input result:

 <action name="your-action-name" class="com.inrev.bm.action.IRCampaignMgmtAction">
   <result name="input">/WEB-INF/pat/to/input.jsp</result>
   <result name="success">/WEB-INF/pat/to/success.jsp</result>
 </action>

Update

For your second error, you can see the code that's resulting in the message in the XWorkConverter.getConverter() method (starts at line 366). What Java type is your session property in your com.inrev.bm.action.IRFacebookAction class?

You may have to define a custom type converter to handle this case if it's not something XWork is able to handle by default.

struts2 interceptor problems

1 Answers