Learn Java for Web Development

200 CHAPTER 4: Building a Web Application Using Struts 2

method value. This enables the Struts 2 framework to dynamically select the correct method to call
at runtime. Listing 4-43 illustrates booksByCategory().

Listing 4-43. booksByCategory( )

public String booksByCategory() {
dao = new BookDAOImpl();
setBookList(dao.findBooksByCategory(category));
return "booksByCategory";
}

When booksByCategory() in the Listing 4-43 returns it is mapped to the tile name booklist as it was
illustrated in Line 5 of Listing 4-42. This maps to booklist defined in the tiles.xml as illustrated in
Listing 4-44 which renders the booklist.jsp file. Listing 4-44 illustrates the code fragment in
tiles.xml.

Listing 4-44. tiles.xml

1.
2.
3.
4.
5.

Listing 4-45 illustrates the bookList.jsp.

Listing 4-45. booklist.jsp

1.<%@ taglib uri="/struts-tags" prefix="s"%>
3.
5.