Struts configures the wildcard * to match the method, implementing a dynamic call

01:web.xml in configuration, start struts2

<?xml version= "1.0" encoding= "UTF-8"? ><web-app version= "2.4"xmlns= "HTTP://JAVA.SUN.COM/XML/NS/J2EE"Xmlns:xsi= "Http://www.w3.org/2001/XMLSchema-instance"xsi:schemalocation= "Http://java.sun.com/xml/ns/j2ee http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd "><!--01: Start Struts2 Frame--<filter> <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-pat Tern>/*</url-pattern> </filter-mapping> <welcome-file-list> <welcome-file>index.jsp</we Lcome-file> </welcome-file-list></web-app>

02: Writing The Action class

 Packagecom.self.action;/*** 02: Write the corresponding processing method*/ Public classhelloworldaction {PrivateString message;  PublicString helloworld_1 () { This. message= "Helloworld_1"; return"Helloworld_1"; }     PublicString helloworld_2 () { This. message= "Helloworld_2"; return"Helloworld_2"; }        //To inject a value into a property, you need to provide a set method     Public voidsetmessage (String message) { This. Message =message; }    //Show values on page, need get method     PublicString getMessage () {returnmessage; }}

03: Configure Struts.xml

<?xml version= "1.0" encoding= "UTF-8"? ><! DOCTYPE struts public    "-//apache software foundation//dtd struts Configuration 2.0//en"    "/http Struts.apache.org/dtds/struts-2.0.dtd "><struts><!--01: Change. Action access to. Do and. Action--><constant Name= "Struts.action.extension" value= "do,action"/><!--02: Specify the default encoding, Equivalent to HttpServletRequest's Setcharacterencoding method, also used for freemarker, velocity output--><constant name= " Struts.i18n.encoding "value=" UTF-8 "/><include file=" Department.xml "/></struts>

　　

04: Write the introduced department.xml

<?xml version= "1.0" encoding= "UTF-8"? ><! DOCTYPE struts public    "-//apache software foundation//dtd struts Configuration 2.0//en"    "/http Struts.apache.org/dtds/struts-2.0.dtd "><struts><package name=" dep "namespace="/department "extends=" Struts-default "><!--use wildcard * to refer to the method name, {1} represents the field represented by the first wildcard: this represents the method--><action name=" helloworld_* "class=" Com.self.action.HelloWorldAction "method=" {1} "><result name=" Helloworld_1 ">/helloworld_1.jsp</result ><result name= "Helloworld_2" >/helloworld_2.jsp</result></action></package></ Struts>

　　

05: Writing Interface 1

<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%>
　　
06: Writing Interface 2
<%@ page language= "java" import= "java.util.*" pageencoding= "UTF-8"%>
　　
07: Access Path 1, 2
Http://localhost:8080/Struts2_01/department/helloworld_helloworld_1.action
Http://localhost:8080/Struts2_01/department/helloworld_helloworld_2.action
Struts configures the wildcard * to match the method, implementing a dynamic call