已經有很多人寫過文章，來介紹和說明這個問題了。
我在學習和使用之后，就也作了一下總結。
第一步：
配置和struts環境

第二步：
載入spring包
第三步：
在struts-config.xml中作spring插件配置，代碼如下：

? <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
??? <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml" />
? </plug-in>
?
第四步：
在action中使用spring.

要使用spring,首先就要取得spring的控制權，也就是取得ApplicationContext。

首先，如果我們了解了插件初始化的結果的話，那么我們看：
java.util.Enumeration e = this.getServlet().getServletContext().getAttributeNames();
??? ???
??? ??? while(e.hasMoreElements()){
??? ??? ??? String s = (String)e.nextElement();
??? ??? ???
??? ??? ??? System.out.println(s);
??? ??? }
??? ???
這一段程序將顯示所有的初始化的參數變量，顯示如下：
org.apache.catalina.jsp_classpath
org.apache.struts.action.MESSAGE
org.apache.struts.util.PREFIXES
org.springframework.web.struts.ContextLoaderPlugIn.CONTEXT.
org.apache.catalina.WELCOME_FILES
org.apache.struts.action.ACTION_SERVLET
org.apache.struts.action.FORWARDS
org.apache.struts.action.REQUEST_PROCESSOR
javax.servlet.context.tempdir
org.apache.struts.action.MAPPINGS
org.apache.struts.action.SERVLET_MAPPING
org.apache.struts.action.FORM_BEANS
org.apache.struts.action.PLUG_INS
org.apache.catalina.resources
org.apache.struts.action.MODULE

藍色的部分就是spring初始化后的結果，也就是，spring初始化后的結果WebApplicationContext保存在
org.springframework.web.struts.ContextLoaderPlugIn.CONTEXT.
變量里面。那么我們就可以使用如下的方式來取得此對象：
??? ??? ApplicationContext ctx = (ApplicationContext)this.getServlet().getServletContext().getAttribute("org.springframework.web.struts.ContextLoaderPlugIn.CONTEXT.");
??? ??? System.out.println("ctx? is? :? " + ctx);

還有一個方法，就是使用spring給我們提供的接口，我們在構建action繼承自ActionSuport,那么，我們就可以通過下面的方法來訪問：
??? ??? ApplicationContext ctx = this.getWebApplicationContext();
??? ??? System.out.println("the application context is :? " + ctx);

接下來，我們就可以測試一下，我們的spring.
先創建一個bean:
package org.zy.pro.demo.sd.bean;

public class User {

??? private String username;

??? private String password;

??? public String getPassword() {
??? ??? return password;
??? }

??? public void setPassword(String password) {
??? ??? this.password = password;
??? }

??? public String getUsername() {
??? ??? return username;
??? }

??? public void setUsername(String username) {
??? ??? this.username = username;
??? }

}
然后再spring的配置文件里面配置，如下：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
??? xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
??? xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">

??? <bean id="user" class="org.zy.pro.demo.sd.bean.User">
??? ??? <property name="username">
??? ??? ??? <value>everybody</value>
??? ??? </property>
??? ???
??? ??? <property name="password">
??? ??? ??? <value>everybodypassword</value>
??? ??? </property>
??? </bean>

</beans>

好了，調用一下吧：

創建一個action,

package org.zy.pro.demo.sd.action;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import org.springframework.context.ApplicationContext;
import org.springframework.core.io.FileSystemResourceLoader;
import org.springframework.web.context.WebApplicationContext;
import org.springframework.web.context.support.GenericWebApplicationContext;
import org.springframework.web.context.support.ServletContextResourceLoader;
import org.springframework.web.struts.ActionSupport;
import org.zy.pro.demo.sd.bean.User;

public class Bus extends ActionSupport {

??? @Override
??? public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest arg2, HttpServletResponse arg3) throws Exception {
??? ??? // TODO Auto-generated method stub
??? ???
??? ??? ApplicationContext ctx = this.getWebApplicationContext();
??? ??? System.out.println("the application context is :? " + ctx);
??? ???
??? ??? User user = (User) ctx.getBean("user");
??? ??? System.out.println("username is : "+user.getUsername());
???
??? ??? return super.execute(arg0, arg1, arg2, arg3);
??? }

}

然后再struts-config.xml文件里面配置action如下：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE struts-config PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 1.1//EN" "http://jakarta.apache.org/struts/dtds/struts-config_1_1.dtd">

<struts-config>
? <data-sources />
? <form-beans />
? <global-exceptions />
? <global-forwards />
? <action-mappings >
??? <action path="/map" type="org.zy.pro.demo.sd.action.MapAction" />
??? <action path="/bus" type="org.zy.pro.demo.sd.action.Bus" />?
? </action-mappings>
?
? <message-resources parameter="org.zy.pro.demo.sd.ApplicationResources" />
?
? <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn">
??? <set-property property="contextConfigLocation" value="/WEB-INF/applicationContext.xml" />
? </plug-in>
?
</struts-config>

好了，發布，測試一下，結果如下：

the application context is :? org.springframework.web.context.support.XmlWebAppl
icationContext: display name [WebApplicationContext for namespace 'action-servle
t']; startup date [Thu Jul 05 18:23:56 CST 2007]; root of context hierarchy; con
fig locations [/WEB-INF/applicationContext.xml]
username is : everybody




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