Caused by: java.lang.IllegalArgumentException: unknown reserved key '_typeConverter'

Question

I am getting the below error while I am trying to login to my Struts application. This is occurring after upgrading my Struts libraries to latest.

Please share any information which will help me fix this. Previous version of Struts was 2.3.10. The newer version is 2.5.10.1.

 Caused by: java.lang.IllegalArgumentException: unknown reserved key
 '_typeConverter'
     at ognl.OgnlContext.put(OgnlContext.java:536)
     at ognl.Ognl.setTypeConverter(Ognl.java:346)
     at com.opensymphony.xwork2.ognl.OgnlUtil.setProperty(OgnlUtil.java:225)
     at com.opensymphony.xwork2.ognl.OgnlReflectionProvider.setProperty(OgnlReflectionProvider.java:90)
     at org.apache.struts2.factory.StrutsResultFactory.setParameter(StrutsResultFactory.java:67)
     at org.apache.struts2.factory.StrutsResultFactory.setParameters(StrutsResultFactory.java:52)
     at org.apache.struts2.factory.StrutsResultFactory.buildResult(StrutsResultFactory.java:41)
     at com.opensymphony.xwork2.ObjectFactory.buildResult(ObjectFactory.java:220)
     at com.opensymphony.xwork2.DefaultActionInvocation.createResult(DefaultActionInvocation.java:215)
>     ... 18 more

You should post also some code so we can have a context for this error — rakwaht, Mar 24 '17 at 10:56
Thank you @rakwaht for the comment. I don't know which of the code is throwing the error too. This is like an application level error. Before opening any page on the screen this error is showing up. — ramanareddy438, Mar 24 '17 at 17:57

score 1 · Accepted Answer · answered Mar 27 '17 at 18:55

1

You are using wrong version of the OGNL library. Use Maven or equivalent to manage dependencies. Or download Essential Dependencies Only to see which version of the OGNL you need to use with the Struts 2.5.10.1.

answered Mar 27 '17 at 18:55

Aleksandr M

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Reserver word is in all versions OGNL. This answer is wrong. – Roman C Mar 27 '17 at 22:21
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@RomanC Where from it comes then? You don't know what you're talking about. You can try it yourself to see I'm right. – Aleksandr M Mar 28 '17 at 06:23
Thank you @AleksandrM for the answer. I tried the OGNL jar file you gave. It looks like it worked. I am not seeing that exception anymore. – ramanareddy438 Mar 28 '17 at 06:57

Roman C · Answer 2 · 2017-03-27T10:54:56.480

0

You have used reserved key _typeConverter. Rename your key to something else.

 RESERVED_KEYS.put(TYPE_CONVERTER_CONTEXT_KEY, null);

This code from apidocs for OgnlContext.

edited Mar 27 '17 at 10:54

answered Mar 24 '17 at 21:41

Roman C

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Thank you for the reply @Roman C. I couldn't see _typeConverter key in my entire code base. – ramanareddy438 Mar 27 '17 at 07:03
@ramanareddy438 Did you see the link I've posted? It's a codedebase that you use. – Roman C Oct 26 '21 at 19:56

Caused by: java.lang.IllegalArgumentException: unknown reserved key '_typeConverter'

2 Answers2