The core configuration file for the framework is the default (struts.xml) file. The default file may include other configuration files as needed. See Struts Configuration Elements for a description of the various elements.
An Example configuration file
struts.xml
Error formatting macro: snippet: java.lang.NullPointerException
For more about configuration details, see Struts Configuration Elements
The Struts 2 Document Type Definition (DTD)
struts-2.0.dtd
Error formatting macro: snippet: java.lang.NullPointerException
FAQ
Can we break up a large struts.xml file into smaller pieces?