spring+struts的集成(第一种集成方案)

spring+struts的集成(第一种集成方案，不常用，因为具有代码侵入性)
原理：在Action中取得BeanFactory对象，然后通过BeanFactory获取业务逻辑对象

1、spring和struts依赖库配置
* 配置struts
--拷贝struts类库和jstl类库
--修改web.xml文件来配置ActionServlet
--提供struts-config.xml文件
--提供国际化资源文件
* 配置spring
--拷贝spring类库
--提供spring配置文件

2、在struts的Action中调用如下代码取得BeanFactory
BeanFactory factory = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext());

3、通过BeanFactory取得业务对象，调用业务逻辑方法

配置web.xml文件：

<?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">
  <welcome-file-list>
    <welcome-file>index.jsp</welcome-file>
  </welcome-file-list>
  
  <servlet>
    <servlet-name>action</servlet-name>
    <servlet-class>org.apache.struts.action.ActionServlet</servlet-class>
    <init-param>
      <param-name>config</param-name>
      <param-value>/WEB-INF/struts-config.xml</param-value>
    </init-param>
    <init-param>
      <param-name>debug</param-name>
      <param-value>2</param-value>
    </init-param>
    <init-param>
      <param-name>detail</param-name>
      <param-value>2</param-value>
    </init-param>
    <load-on-startup>2</load-on-startup>
  </servlet>


  <!-- Standard Action Servlet Mapping -->
  <servlet-mapping>
    <servlet-name>action</servlet-name>
    <url-pattern>*.do</url-pattern>
  </servlet-mapping>  
 
 <!--这里是这种集成需要添加的配置-->
   <context-param>
  	<param-name>contextConfigLocation</param-name>
  	<param-value>classpath*:applicationContext-*.xml</param-value>
  </context-param>
   
	<listener>
		<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
	</listener>
   
</web-app>

在Action 中可以如下使用：

public class LoginAction extends Action {

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		LoginActionForm laf = (LoginActionForm)form;
		
		//UserManager userManager = new UserManagerImpl();
		//userManager.login(laf.getUsername(), laf.getPassword());
		
		//BeanFactory factory = new ClassPathXmlApplicationContext("applicationContext-beans.xml");
		//UserManager userManager = (UserManager)factory.getBean("userManager");
		//userManager.login(laf.getUsername(), laf.getPassword());
		
		BeanFactory factory = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext());
		
		//ApplicationContext pc = WebApplicationContextUtils.getRequiredWebApplicationContext(request.getSession().getServletContext());
		UserManager userManager = (UserManager)factory.getBean("userManager");
		userManager.login(laf.getUsername(), laf.getPassword());
		
		return mapping.findForward("success");
	}

	
}