[ https://issues.apache.org/struts/browse/WW-1913?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

floyd.yao updated WW-1913:
--------------------------

    Description: 
When using '/*' as the FilterDispatcher mapping pattern,the FilterDispatcher.prepareDispatcherAndWrapRequest method will always prepares threadlocal dispatcher(got from Dispatcher.getInstance() )  for each request (including request like *.js,*.htm...) but never cleanup the threadlocal dispatcher like when action served, which result in the absence of wrapping raw request to StrutsRequestWrapper after the first non-action mapping request. The consequent requests for the same thread are all unwrapped(util an action request occur and the action request's output haven't any js , css file or sth like these;but these outputs' content vary from time to time...) . As for these unwrapped requests,their getAttribute method will not find attribute in valuestack ,the EL collapse :(

I found two ways to solve this problem:
1. change the pattern from '/*' back to '*.do',and it works .(both Codebehind Plugin and zero configuration featrue of struts2 seem to work well in *.do pattern ,isnt it ?)
2. add ActionContextCleanUp filter before struts FilterDispatcher filter in web.xml ,thus it'll do cleanup for every request.(is it designed  to be used like this ? the guide said it delegate the cleanup action as used with Sitemesh)

So,Is there a need to move the 'ActionContextCleanUp.cleanUp(req);' to the outer try..finally block in class FilterDispatcher ?thus the '/*' pattern can also be  used with EL in jsp .

Is it a bug ? Any suggestion is appreciated :)


  was:
When using '/*' as the FilterDispatcher mapping pattern,the FilterDispatcher.prepareDispatcherAndWrapRequest method will always prepares threadlocal dispatcher(got from Dispatcher.getInstance() )  for each request (including request like *.js,*.htm...) but never cleanup the threadlocal dispatcher like when action served, which result in the absence of wrapping raw request to StrutsRequestWrapper after the first non-action mapping request. And the consequent requests for the same thread are all unwrapped and their getAttribute will not find attribute in valuestack ,the EL collapse :(

I found two ways to solve this problem:
1. change the pattern from '/*' back to '*.do',and it works .(both Codebehind Plugin and zero configuration featrue of struts2 seem to work well in *.do pattern ,isnt it ?)
2. add ActionContextCleanUp filter before struts FilterDispatcher filter in web.xml ,thus it'll do cleanup for every request.(is it designed  to be used like this ? the guide said it delegate the cleanup action as used with Sitemesh)

So,Is there a need to move the 'ActionContextCleanUp.cleanUp(req);' to the outer try..finally block in class FilterDispatcher ?thus the '/*' pattern can also be  used with EL in jsp .

Is it a bug ? Any suggestion is appreciated :)



> Integrate valuestack with EL 
> -----------------------------
>
>                 Key: WW-1913
>                 URL: https://issues.apache.org/struts/browse/WW-1913
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Dispatch
>    Affects Versions: 2.0.6
>         Environment: tomcat5.5.17 , struts2.0.6
>            Reporter: floyd.yao
>
> When using '/*' as the FilterDispatcher mapping pattern,the FilterDispatcher.prepareDispatcherAndWrapRequest method will always prepares threadlocal dispatcher(got from Dispatcher.getInstance() )  for each request (including request like *.js,*.htm...) but never cleanup the threadlocal dispatcher like when action served, which result in the absence of wrapping raw request to StrutsRequestWrapper after the first non-action mapping request. The consequent requests for the same thread are all unwrapped(util an action request occur and the action request's output haven't any js , css file or sth like these;but these outputs' content vary from time to time...) . As for these unwrapped requests,their getAttribute method will not find attribute in valuestack ,the EL collapse :(
> I found two ways to solve this problem:
> 1. change the pattern from '/*' back to '*.do',and it works .(both Codebehind Plugin and zero configuration featrue of struts2 seem to work well in *.do pattern ,isnt it ?)
> 2. add ActionContextCleanUp filter before struts FilterDispatcher filter in web.xml ,thus it'll do cleanup for every request.(is it designed  to be used like this ? the guide said it delegate the cleanup action as used with Sitemesh)
> So,Is there a need to move the 'ActionContextCleanUp.cleanUp(req);' to the outer try..finally block in class FilterDispatcher ?thus the '/*' pattern can also be  used with EL in jsp .
> Is it a bug ? Any suggestion is appreciated :)

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