Quick reply does not work - java.lang.ClassCastException: java.util.ArrayList

[Migrated From Jforum.net]

Hi

i have tried integrating jforum with my webapp without SSO mech. Everything works fine except when i click on the quickreply tab
i get the error ( stack trace from the html file source code
java.lang.ClassCastException: java.util.ArrayList

<!-- BEGIN ERROR STACK TRACE
net.jforum.exceptions.ForumException: java.lang.reflect.InvocationTargetException
	at sun.reflect.GeneratedMethodAccessor97.invoke(Unknown Source)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
	at java.lang.reflect.Method.invoke(Unknown Source)
	at net.jforum.Command.process(Command.java:125)
	at net.jforum.JForum.processCommand(JForum.java:225)
	at net.jforum.JForum.service(JForum.java:207)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at net.jforum.util.legacy.clickstream.ClickstreamFilter.doFilter(ClickstreamFilter.java:59)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:286)
	at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:857)
	at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:565)
	at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1509)
	at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.reflect.InvocationTargetException
	... 22 more
Caused by: java.lang.ClassCastException: java.util.ArrayList
	at net.jforum.context.web.WebRequestContext.getParameter(WebRequestContext.java:335)
	at net.jforum.view.forum.common.PostCommon.fillPostFromRequest(PostCommon.java:302)
	at net.jforum.view.forum.common.PostCommon.fillPostFromRequest(PostCommon.java:291)
	at net.jforum.view.forum.PostAction.insertSave(PostAction.java:1025)
	... 22 more

URL is: /jforum-2.1.8_session/jforum.page?null
END ERROR STACK TRACE-->

it seems that that the app is not able to get the getparameter fom the webrequestcontext object

any help will be appreciated

[originally posted on jforum.net by anilhk]

[Migrated From Jforum.net]

pls .. any help !!
[originally posted on jforum.net by anilhk]

[Migrated From Jforum.net]

Details on what you mean the statement below would be helpful. Especially, the "WITHOUT SSO" part.

i have tried integrating jforum with my webapp without SSO mech.

FWIW, this classCastException can occur if the URL contains duplicate parameters. E.g. ?x=2&x=3, which is valid in HTML (radio buttons use this). The URL parser converts them to from a single string value to an ArrayList... but if the code expect a single value then you get this error.

It might also be related to a bug in the code that causes this if the *.page URL is not a valid. See:

http://www.jforum.net/posts/preList/4885/19661.page


[originally posted on jforum.net by monroe]