FilterDispatcher: Catch RedirectException to issue 30x code
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Key: WW-2726
URL: https://issues.apache.org/struts/browse/WW-2726
Project: Struts 2
Issue Type: Improvement
Components: Dispatch Filter
Reporter: Paul Benedict
When creating my own implementation of ActionMapper, I have no way to tell the
FilterDispatcher to redirect to a different page. I am creating an alias in
effect.
Here's what is going on:
1. I invoke the superclass to match an action mapping. if found, return.
2. Match again adding "/index.action" to the servlet path. if found, return.
3. Match again adding "index.action" (no slash) to the servlet path. if found,
return.
Aside from the obvious inefficiencies to be resolve, it should be plain what my
intent is. I am executing the index action for a directory path, but there's no
good way to get #3 to issue a redirect. URIs ending in /foo should become /foo/
in the browser.
Therefore, I pull a page from the Tapestry book. You can throw a
RedirectException with a path and a temporary/permanent flag to set the correct
HTTP status.
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