Global result processing and dependency injection of struts2

Web. xml [html] <? Xml version = "1.0" encoding = "UTF-8"?> <Web-app version = "2.5" xmlns =" http://java.sun.com/xml/ns/javaee "Xmlns: xsi =" http://www.w3.org/2001/XMLSchema-instance "Xsi: schemaLocation =" http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee /Web-app_2_5.xsd "> <! -- Add a filter to start the struts2MVC framework --> <filter-name> struts2 </filter-name> <filter-class> org. apache. struts2.dispatcher. ng. filter. strutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name> struts2 </filter-name> <url-pattern>/* </url-pattern> </filter-mapping> <welcome-file-list> <welcome-file> index. jsp </welcome-file> </welcome-file-list> </web-app> <? Xml version = "1.0" encoding = "UTF-8"?> <Web-app version = "2.5" xmlns =" http://java.sun.com/xml/ns/javaee "Xmlns: xsi =" http://www.w3.org/2001/XMLSchema-instance "Xsi: schemaLocation =" http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee /Web-app_2_5.xsd "> <! -- Add a filter to start the struts2MVC framework --> <filter-name> struts2 </filter-name> <filter-class> org. apache. struts2.dispatcher. ng. filter. strutsPrepareAndExecuteFilter </filter-class> </filter> <filter-mapping> <filter-name> struts2 </filter-name> <url-pattern>/* </url-pattern> </filter-mapping> <welcome-file-list> <welcome-file> index. jsp </welcome-file> </welcome-file-list> </web-app> index. jsp [html] <% @ page comment AG E = "java" import = "java. util. * "pageEncoding =" UTF-8 "%> <% String path = request. getContextPath (); String basePath = request. getScheme () + ": //" + request. getServerName () + ":" + request. getServerPort () + path + "/"; %> <! Doctype html public "-// W3C // dtd html 4.01 Transitional // EN">