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Likewise, the framework uses a configuration file to initialize its own resources. These resources include:

• Interceptors that can preprocess and postprocess a request
• Action classes that can call business logic and data access code
• Results that can prepare views, like JavaServer Pages and FreeMarker templates

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At runtime, there is a single configuration for an application. Prior to runtime, the configuration is defined through one or more XML documents, including the default struts.xml document. There are several elements that can be configured, including packages, namespaces, includes, actions, results, interceptors, and exceptions.

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