How can we write our own interceptor and map it for action?

Answer

We can implement com.opensymphony.xwork2.interceptor.Interceptor interface to create our own interceptor. Once the interceptor class is ready, we need to define that in struts.xml package where we want to use it. We can also create interceptor stack with our custom interceptor and defaultStack interceptors. After that we can configure it for action classes where we want to use our interceptor.