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https://issues.apache.org/jira/browse/WW-3610?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Dustin Digmann closed WW-3610.
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Resolution: Not A Problem
> Newlines at the end of JSPs cause IllegalStateException
> -------------------------------------------------------
>
> Key: WW-3610
> URL: https://issues.apache.org/jira/browse/WW-3610
> Project: Struts 2
> Issue Type: Bug
> Reporter: Dustin Digmann
>
> We created a new JSP recently. It does not have a corresponding Action
> class, straight JSP. This JSP was creating the following exception:
> java.lang.IllegalStateException: getOutputStream() has already been called
> for this response
> at org.apache.catalina.connector.Response.getWriter(Response.java:599)
> at
> org.apache.catalina.connector.ResponseFacade.getWriter(ResponseFacade.java:195)
> at
> org.apache.jasper.runtime.JspWriterImpl.initOut(JspWriterImpl.java:124)
> at
> org.apache.jasper.runtime.JspWriterImpl.flushBuffer(JspWriterImpl.java:117)
> ...
> Users did not seem to be affected. This was in the background.
> After the last "%>" within this JSP there was a newline. Removing this
> newline removed the exception.
> Can an update be made to ignore EOF newlines and whitespace?
> Note: I do not have a shareable example at this moment. I might be able to
> put one together upon request.
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