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Apache Struts 2 Documentation
Timer Interceptor
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This interceptor logs the amount of time in milliseconds. In order for this interceptor to work properly, the logging framework must be set to at least the `INFO` level. This interceptor relies on the Commons Logging API to report its execution-time value.

## Parameters

- logLevel (optional) - what log level should we use (`trace, debug, info, warn, error, fatal`)? - defaut is `info`

- logCategory (optional) - If provided we would use this category (eg. `com.mycompany.app`). Default is to use `com.opensymphony.xwork2.interceptor.TimerInterceptor`.

The parameters above enables us to log all action execution times in our own logfile.

## Extending the Interceptor

This interceptor can be extended to provide custom message format. Users should override the `invokeUnderTiming` method.

## Examples