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Apache Struts 2 Documentation
Converting application from Codebehind to Convention Plugin
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### Changes required

- Replace org.apache.struts2.config.Namespace with org.apache.struts2.convention.annotation.Namespace
- Replace org.apache.struts2.config.Results with org.apache.struts2.convention.annotation.Results
- Replace org.apache.struts2.config.Result with org.apache.struts2.convention.annotation.Result
- Update @Result uses to use result name instead of Class<Result>
- Update @Result uses to use location instead of value attribute
- Update web.xml and remove Codebehind params from filter
- Update CamelCase action results and references to match Convention. For example:

### When REST plugin is used

Add these constants to struts.xml