1. GlassFish problem with filter chain (has worked in Tomcat for years): java.lang.IllegalStateException: PWC3990: getWriter() has already been called f... stackoverflow.com
We need to upgrade an elderly web application to run under GlassFish 3 instead of Tomcat in order to get EAR deployments (Glassfish was chosen as it is the reference JEE ...
2. Redirecting the response from a filter throws an IllegalStateException stackoverflow.com
I am writing a filter that will handle all authentication related tasks. My filter is a standard servlet filter as shown below
3. java filter forward throwing illegalstateexception stackoverflow.com
i m intercepting the request url and forwarding that to another url
4. Why get IllegalStateException when redirect in Servlet Filter? coderanch.com