What is ActionServlet?

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What is ActionServlet?

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!!!Answer!!!- From Technical Expert

The class org.apache.struts.action.ActionServlet is the called the ActionServlet. In the the Jakarta Struts Framework this class plays the role of controller. All the requests to the server goes through the controller. Controller is responsible for handling all the requests.

Struts Flow start with ActionServlet then call to process() method of RequestProcessor.

Step 1. Load ActionServlet using load-on-startup and do the following tasks.

Any struts web application contain the ActionServlet configuration in web.xml file.
On load-on-startup the servlet container Instantiate the ActionServlet .
First Task by ActionServlet : The ActionServlet takes the Struts Config file name as an init-param.
At startup, in the init() method, the ActionServlet reads the Struts Config file and load into memory.
Second Task by ActionServlet : If the user types http://localhost:8080/app/submitForm.do in the browser URL bar, the URL will be intercepted and processed by the ActionServlet since the URL has a pattern *.do, with a suffix of "do". Because servlet-mapping is
<servlet-mapping>
<servlet-name>action</servlet-name>
<url-pattern>*.do</url-pattern>
</servlet-mapping>
Third Task by ActionServlet : Then ActionServlet delegates the request handling to another class called RequestProcessor by invoking its process() method.

Step 2. ActionServlet calls process() method of RequestProcessor

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What is ActionServlet?

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