<?xml version="1.0" encoding="ISO-8859-1" ?> 
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd"> 

<struts-config> 
<form-beans> 
<form-bean name="helloWorld" type="com.strutstest.action.HelloWorld"/> 
</form-beans> 

<action-mappings> 
<!--注意此处的type属性定义为DelegatingActionProxy 类--> 
<action path="/helloWorld" type="org.springframework.web.struts.DelegatingActionProxy" name="helloWorld" validate="true" input="/WEB-INF/jsp/input.jsp"> 
<forward name="index" path="/WEB-INF/jsp/index.jsp"/> 
<forward name="show" path="/WEB-INF/jsp/show.jsp"/> 
</action> 
<action 
path="/input" 
type="org.apache.struts.actions.ForwardAction" 
parameter="/WEB-INF/jsp/input.jsp"/> 
</action-mappings> 
<!--注册ContextLoaderPlugIn --> 
<plug-in className="org.springframework.web.struts.ContextLoaderPlugIn"> 
<set-property property="contextConfigLocation" value="/WEB-INF/config.xml" /> 
</plug-in> 
<message-resources parameter="messages"/> 
</struts-config> 

<?xml version="1.0" encoding="UTF-8"?> 
<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN 2.0//EN" 
"http://www.springframework.org/dtd/spring-beans-2.0.dtd"> 

<beans> 
<bean id=”helloWorldService” class=”com.strutstest.service.impl.HelloWorldServiceImpl”> 
</bean> 

<!--注意此处的映射必须与Struts中的动作对应--> 
<bean name=”/helloWorld” class=”com.strutstest.action.HelloWorldAction”> 
<property name=”helloWorldService”> 
<ref bean=”helloWorldService”/> 
</property> 
</bean> 
</beans> 

package com.strutstest.action;
import javax.servlet.http.HttpServletRequest;
import org.apache.struts.action.ActionError;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionMapping;
public class HelloWorld extends ActionForm {
private String msg = null;
public void setMsg(String msg) {
this.msg = msg;
}
public String getMsg() {
return this.msg;
}
public void reset(ActionMapping mapping, HttpServletRequest req) {
this.msg = null;
}
public ActionErrors validate(ActionMapping mapping,
HttpServletRequest request) {
ActionErrors errors = new ActionErrors();
if("".equals(getMsg())) {
errors.add("msg",new ActionError("error"));
}
return errors;
}
} 

    定义HelloWorld类的接口：

package com.strutstest.service;
import com.strutstest.action.HelloWorld;
public interface HelloWorldService {
public abstract String addMsg(HelloWorld helloWorld);
} 

    定义接口的实现：

package com.strutstest.service.impl; 

import com.strutstest.action.HelloWorld; 
import com.strutstest.service.HelloWorldService; 

public class HelloWorldServiceImpl implements HelloWorldService { 
public String addMsg(HelloWorld helloWorld) { 
helloWorld.setMsg("Hello World... " + helloWorld.getMsg()); 
return helloWorld.getMsg(); 
} 
} 

    Step 4：定义Action

package com.strutstest.action;
import java.io.IOException;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.log4j.Logger;
import org.apache.struts.action.*;
import org.apache.struts.actions.DispatchAction;
import org.springframework.context.ApplicationContext;
import org.springframework.web.struts.ActionSupport;
import com.strutstest.service.HelloWorldService;
public class HelloWorldAction extends Action {
private Logger logger = Logger.getLogger(this.getClass().getName());
//依赖注入 
private HelloWorldService helloWorldService;
public HelloWorldService getHelloWorldService () {
return helloWorldService;
}
public void setHelloWorldService (HelloWorldService helloWorldService) {
this.helloWorldService = helloWorldService;
}
public ActionForward execute(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response) throws Exception {
String msg = getHelloWorldService().addMsg((HelloWorld)form);
request.setAttribute("helloWorld", msg);
return mapping.findForward("show");
}
} 

    Step 5：定义视图

    定义用户输入界面input.jsp：

<%@ taglib uri="/tags/struts-html" prefix="html" %> 
<%@ taglib uri="/tags/struts-bean" prefix="bean" %> 

<%@page contentType="text/html;charset=GBK"%> 
<html:html locale="true"> 
<head> 
<title><bean:message key="title"/></title> 
<html:base/> 
</head> 
<html:messages id="msg"> 
<bean:write name="msg"/> 
</html:messages> 
<body> 
<form name="HelloWorld" action="/myStruts/helloWorld.do" method="post"> 
<bean:message key="welcome"/><input type="text" name="msg" value=""/><br> 
<input type="submit" name="method" value="<bean:message key="submit"/>"/> 
</form> 
</body> 
</html:html> 

    定义系统响应界面show.jsp：

<%@ taglib uri="/tags/struts-html" prefix="html" %> 
<%@ taglib uri="/tags/struts-bean" prefix="bean" %> 
<%@page contentType="text/html;charset=GBK"%> 
<html:html locale="true"> 
<head> 
<title><bean:message key="title"/></title> 
<html:base/> 
</head> 
<body bgcolor="white"> 
<html:errors/> 
<html:messages id="msg"> 
<bean:write name="msg"/> 
</html:messages> 
<% 
String str = (String)request.getAttribute("helloWorld"); 
%> 
<body> 
<font color=”blue”> 
<bean:message key="input"/>"${helloWorld}"<br> 
</font> 
</body> 
</html:html>