1，定义配置文件：
<?xml version="1.0" encoding="ISO-8859-1"?>
<component-definitions>
<definition name="aDef" path="/layout.jsp">
<put name="header" value="/header.jsp"/>
<put name="footer" value="/footer.jsp"/>
<put name="body" value="/aBody.jsp"/>
</definition>
</component-definitions>
2，配置web.xml：
<servlet>
<servlet-name>action</servlet-name>
<servlet-class>org.apache.struts.tiles.ActionComponentServlet</servlet-class>
<init-param>
<param-name>definitions-config</param-name>
<param-value>/WEB-INF/tileDefinitions.xml</param-value>
</init-param>
...
</servlet>
3，配置struts-config.xml
<action path="/a" type="com.malani.struts.action.DoFirst">
<forward name="success" path="aDef"/>
</action>
调用一个重定向的servlet DoFirst访问aDef，即tileDefinitions.xml 中配置的具体模板。
