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IllegalStateException  RSS feed

Derek Drever
Posts: 18
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I am in the process of building a web application with struts and tiles. I am looking at access control. I was planning to simply set an attribute in session scope when a user has logged in. Each JSP page would simply check if the attribute was set and if not forward to the login page:
<logic:forward name="start" />
However I get the following error when I try this:
org.apache.jasper.JasperException: Exception forwarding for name start: java.lang.IllegalStateException: Cannot forward after response has been committed
I was wondering if anyone has come accross this and may be able to provide some more insight.
It is sorta covered in the JavaRanch Style Guide.
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