title: Getting OgnlValueStack Error setting expression '6578706f7274' with value '[Ljava.lang.String;@1afb661'
body: <p>I am using DisplayTag with Struts2 for pagination and export option,Pagination is working fine but when i click on  export link ,it's showing an error/warning  message on console .</p>
  
  <pre><code>            16:29:23,171 WARN  [OgnlValueStack] Error setting expression '6578706f7274' with value '[Ljava.lang.String;@1afb661'
              ognl.ExpressionSyntaxException: Malformed OGNL expression: 6578706f7274 [ognl.ParseException: Encountered " &lt;INT_LITERAL&gt; "7274 "" at line 1, column 9.
              Was expecting one of:
              &lt;EOF&gt; 
              "," ...
              "=" ...
              "?" ...
              "||" ...
              "or" ...
              "&amp;&amp;" ...
              "and" ...
              "|" ...
              "bor" ...
              "^" ...
              "xor" ...
              "&amp;" ...
              "band" ...
              "==" ...
              "eq" ...
              "!=" ...
              "neq" ...
              "&lt;" ...
              "lt" ...
              "&gt;" ...
              "gt" ...
              "&lt;=" ...
              "lte" ...
              "&gt;=" ...
              "gte" ...
              "in" ...
              "not" ...
              "&lt;&lt;" ...
              "shl" ...
              "&gt;&gt;" ...
              "shr" ...
              "&gt;&gt;&gt;" ...
              "ushr" ...
              "+" ...
              "-" ...
              "*" ...
              "/" ...
              "%" ...
              "instanceof" ...
              "." ...
              "(" ...
              "[" ...
              &lt;DYNAMIC_SUBSCRIPT&gt; ...
              ]
              at ognl.Ognl.parseExpression(Ognl.java:112)
              at com.opensymphony.xwork2.ognl.OgnlUtil.compile(OgnlUtil.java:225)
              at com.opensymphony.xwork2.ognl.OgnlUtil.setValue(OgnlUtil.java:209)
              at com.opensymphony.xwork2.ognl.OgnlValueStack.trySetValue(OgnlValueStack.java:173)
              at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:160)
              at com.opensymphony.xwork2.ognl.OgnlValueStack.setValue(OgnlValueStack.java:151)
              at com.opensymphony.xwork2.interceptor.ParametersInterceptor.setParameters(ParametersInterceptor.java:288)
              at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:199)
              at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.ParametersInterceptor.doIntercept(ParametersInterceptor.java:207)
              at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.StaticParametersInterceptor.intercept(StaticParametersInterceptor.java:190)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.interceptor.MultiselectInterceptor.intercept(MultiselectInterceptor.java:75)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.interceptor.CheckboxInterceptor.intercept(CheckboxInterceptor.java:94)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.interceptor.FileUploadInterceptor.intercept(FileUploadInterceptor.java:243)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.ModelDrivenInterceptor.intercept(ModelDrivenInterceptor.java:100)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.ScopedModelDrivenInterceptor.intercept(ScopedModelDrivenInterceptor.java:141)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.interceptor.debugging.DebuggingInterceptor.intercept(DebuggingInterceptor.java:270)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.ChainingInterceptor.intercept(ChainingInterceptor.java:145)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.PrepareInterceptor.doIntercept(PrepareInterceptor.java:171)
              at com.opensymphony.xwork2.interceptor.MethodFilterInterceptor.intercept(MethodFilterInterceptor.java:98)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.I18nInterceptor.intercept(I18nInterceptor.java:176)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.interceptor.ServletConfigInterceptor.intercept(ServletConfigInterceptor.java:164)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.AliasInterceptor.intercept(AliasInterceptor.java:190)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at com.opensymphony.xwork2.interceptor.ExceptionMappingInterceptor.intercept(ExceptionMappingInterceptor.java:187)
              at com.opensymphony.xwork2.DefaultActionInvocation.invoke(DefaultActionInvocation.java:248)
              at org.apache.struts2.impl.StrutsActionProxy.execute(StrutsActionProxy.java:52)
              at org.apache.struts2.dispatcher.Dispatcher.serviceAction(Dispatcher.java:498)
              at org.apache.struts2.dispatcher.FilterDispatcher.doFilter(FilterDispatcher.java:434)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
              at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
              at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
              at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
              at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
              at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
              at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
              at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
              at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
              at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
              at org.jboss.web.tomcat.tc5.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:156)
              at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
              at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
              at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
              at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
              at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
              at org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
              at java.lang.Thread.run(Thread.java:662)
  </code></pre>
  
  <p>And this is the action url which generate excel report</p>
  
  <pre><code>            xyz.action?
              paramBean.st=02-07-2012+00%3A00
              &amp;paramBean.type=0
              &amp;paramBean.et=04-07-2012+00%3A00
              &amp;paramBean.did=294
              &amp;6578706f7274=1
              &amp;didSearch=Rishin-Scorpio
              &amp;paramBean.ust=1341167400
              &amp;d-49216-e=2
              &amp;go=GO
              &amp;paramBean.uet=1341340259
  </code></pre>
  
  <p>According to me the problem may be 6578706f7274 in url which map as object in OGNL.
  Please let me know what is wrong  </p>