spring hibernate struts 整合开发(3) - Struts集成Spring

ChinaBowen

2012-05-16

关注关注

一.springhibernatestruts整合开发(1)-搭建环境

二.springhibernatestruts整合开发(2)-Spring集成的Hibernate编码和测试

三.springhibernatestruts整合开发(3)-Struts集成Spring

四.springhibernatestruts整合开发(4)-Struts与Spring集成2

五.springhibernatestruts整合开发(5)-Hibernate二级缓存

六.springhibernatestruts整合开发(6)-额外功能

1.在web容器中实例化spring容器

spring自带的实例化容器方法是:

AbstractApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");

在web.xml中，通过配置listener和contextparam：

<!-- 指定spring的配置文件，默认从web根目录寻找配置文件，我们可以通过spring提供的classpath前缀指定从类路径下寻找 -->
<context-param>
  <param-name>contextConfigLocation</param-name>
  <param-value>classpath:beans.xml</param-value>
</context-param>
<!-- 对Spring容器进行实例化 -->
<listener>
  <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>

查看ContextLoaderListener源码，可以看到spring把上下文放到servletContext里：

servletContext.setAttribute(WebApplicationContext.ROOT_WEB_APPLICATION_CONTEXT_ATTRIBUTE, this.context);

2.Struts配置

a.在web.xml中，加入struts配置段：

<servlet>
  <servlet-name>struts</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>
  <load-on-startup>0</load-on-startup>
</servlet>
<servlet-mapping>
    <servlet-name>struts</servlet-name>
    <url-pattern>*.do</url-pattern>
</servlet-mapping>

b.新建struts-config.xml文件，加入下面配置：

<?xml version="1.0" encoding="utf-8" ?>

<!DOCTYPE struts-config PUBLIC
          "-//Apache Software Foundation//DTD Struts Configuration 1.3//EN"
          "http://jakarta.apache.org/struts/dtds/struts-config_1_3.dtd">

<struts-config>
   <action-mappings>
     <action path="/person/list" type="cn.john.web.action.PersonAction" validate="false">
         <forward name="list" path="/WEB-INF/page/person_list.jsp"/>
     </action>
</struts-config>

3.新建com.john.web.action.PersonAction类，重载execute方法：

public class PersonAction extends Action{

	@Override
	public ActionForward execute(ActionMapping mapping, ActionForm form,
			HttpServletRequest request, HttpServletResponse response)
			throws Exception {
		// Spring provides us a util to get the context
		WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext(this.getServlet().getServletContext());
		PersonService personService = (PersonService)ctx.getBean("personService");
		request.setAttribute("persons", personService.getPersons());
		return mapping.findForward("list");
	}
}

4.新建person_list.jsp文件，加入下面内容：

<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %>
<body>
	<c:forEach items="${persons}" var="person">
		${person.id} ${person.name}
	</c:forEach>
</body>

开启Web服务(Tomcat,jetty等）测试

整理自：传智播客spring教程

hibernate servlet struts2