Hello action
Run a real Struts action, inject a request parameter, and inspect the rendered result page.
Request lifecycle
How to explain Struts2 with one mental model
1. Request enters
The browser sends a URL and optional form fields or query params.
2. Action mapping
struts.xml resolves the action name and target class.
3. Parameter binding
Struts populates action properties before execute() runs.
4. Result routing
The returned result name decides which JSP or JSON renderer will respond.
Catalog
Interactive demos and guides
Login flow
Use demo credentials, see field validation, and land on a richer post-login dashboard.
User intake form
Submit a small profile payload and see action-backed validation with a success summary.
Validation demo
Test length, email, age, and text limits while keeping the page readable for explanation.
Upload metadata demo
Capture file metadata through Struts form binding without writing anything to disk.
AJAX and REST payloads
Show how Struts2 can return JSON from actions for AJAX examples and lightweight REST-style demos.
Model binding guide
Compare property-driven and model-driven input binding to explain how Struts builds action state.
Learning pipeline
Suggested order for the full demo
1. Start with hello
See the smallest action and result mapping first.
2. Move to forms
Login and user intake show parameter binding in action.
3. Validate inputs
Explain field errors, business rules, and success pages.
4. Expand to JSON
Close the session with AJAX and REST-style payload demos.