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Q: 

Error setting expression '' struts2

Error setting expression '' with value '[Ljava.lang.String;@17e0b22' ognl.ExpressionSyntaxException: Malformed OGNL expression: [ognl.ParseException: Encountered "" at line 1, column 0.

above message shows up in my log file.Now I got rid of all the parameters with no names by disabling them and no param with blank name displays in parameter list for post request in Firebug. I also check in the parameters Map in the setParameter method for any blank key. There is none. but somehow I get the above message always in my log file. Please help. It will be greatly appreciated.

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