Learn Java for Web Development

CHAPTER 4: Building a Web Application Using Struts 2 179

Listing 4-19 illustrates the form that allows the user to enter a name and submit it.

Listing 4-19. index.jsp

1.
2.
3.
4.

   Line 4: When the user submits the form, the action name hello is sent to the

container.

You need a mapping to map the URL to the HelloWorldAction controller. The mapping tells the
Struts 2 framework which class will respond to the user’s action, which method of that class will be
executed, and which view will be rendered as the response. Listing 4-20 illustrates this mapping file.

Listing 4-20. struts.xml

1.<?xml version="1.0" encoding="UTF-8"?>
2.<!DOCTYPE struts PUBLIC

3. "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"


4. "http://struts.apache.org/dtds/struts-2.0.dtd">


5. 
   

Figure 4-12. The directory structure of the project