Javadoubts

Code Walkthrough

This is a code walkthrough to understand how code flow in Struts.

Below inline example used total five files for code walk through example:

1. Form.jsp → This file is responsible to generate request and send same to Server.
2. struts.xml → File to handle request and response.
3. StudentAction.java → Back end code to handle request.
4. Success.jsp → Get called in case of success.
5. Error.jsp → Get called in case of error.

Below is the simple and over all example of Struts2 overall code walkthrough flow:

Step 1 → Execution flow will start from Form.jsp where user will submit an action as student and name input field with some value filled.

Step 2 → As soon as request reach to struts.xml and look for student action mapping class com.student.StudentAction.

Step 3 → process execute() method in mapped class com.student.StudentAction and return true or false to struts.xml.

Step 4 → success and error will execute <result> tag in struts.xml and redirect to either Student.jsp or Error.jsp