SSH整合终结版(三)
本文的前面两部分已对Spring和Hibernate两大框架进行了集成，下面继续对Struts进行整合。
第一步，原来我们对spring容器实例化要手工操作，现在我们通过在web.xml中配置监听器来对Spring容器进行实例化。代码如下：
文件名：web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
?xmlns="http://java.sun.com/xml/ns/javaee"
?xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
?xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
?http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
????? <!-- 在web中实例化容器 -->
?? <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>
?</web-app>
第二步，在web.xml中配置struts。
<!-- Standard Action Servlet Configuration (with debugging) -->
?? <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>
?第三步，在WEB-INF目录下编写struts-config.xml文件。代码如下：
<?xml version="1.0" encoding="utf-8" ?>
<!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>
?<action-mappings>
??? <action path="/person/list" type="com.lyk.web.actions.PersonAction" validate="false">
???? ??<forward name="list" path="/WEB-INF/page/personlist.jsp"/>
??? </action>
?????</action-mappings>
?<controller>
????? <set-property property="processorClass"
?????????????? value="org.springframework.web.struts.DelegatingRequestProcessor"/>
?</controller>
</struts-config>
?其中已配置了一个action，下面我们对该action进行创建。代码如下：
package com.lyk.web.actions;
import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.lyk.service.PersonService;
public class PersonAction extends Action {
?@Resource PersonService personService;
?@Override
?public ActionForward execute(ActionMapping arg0, ActionForm arg1, HttpServletRequest arg2, HttpServletResponse arg3) throws Exception {
??// TODO 自动生成方法存根
??
?/*?WebApplicationContext ctx = WebApplicationContextUtils.getWebApplicationContext
??????????????????????? (this.getServlet().getServletContext());
?? PersonService? personService = (PersonService)ctx.getBean("personService");*/
?? arg2.setAttribute("persons", personService.getPersons());
?? return arg0.findForward("list");
?}
}
第四步，编写View层JSP页面（?<forward name="list" path="/WEB-INF/page/personlist.jsp"/>），在WEB-INF/page目录下创建personlist.jsp页面。代码如下：
文件名：personlist.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core"? prefix="c"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
? <head>
??? <base href="<%=basePath%>">
??? <title>人员列表</title>???
?<meta http-equiv="pragma" content="no-cache">
?<meta http-equiv="cache-control" content="no-cache">
?<meta http-equiv="expires" content="0">???
?<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
?<meta http-equiv="description" content="This is my page">
?<!--
?<link rel="stylesheet" type="text/css" href="styles.css">
?-->
? </head>
? <body>
?? 人员列表：<br>
?? <c:forEach items="${persons}" var="person">
?id=${person.id},name= ${person.name} <br>
?</c:forEach>
???? </body>
</html>
第五步，由于在Action的编写中我们采用了Spring的依赖注入功能对personService进行了注入，所以，我们需要在beans.xml文件中加入如下代码：
??????????<bean id="personService" />
?????????? <bean id="smsService" />
??????????
?????????? <bean name="/person/list" />
?????????? <bean name="/sms/list" />
这样，实现了action类编写的简洁化。
最后，发布SSH项目，打开浏览器进行测试，输入http://localhost:8080/SSH/person/list.do，输出结果为（示例）：
人员列表：
id=1,name= lyk
id=2,name= ii
id=3,name= 大P
id=4,name= 小S
如果看到此结果，则我们的SSH整合项目就成功了，哈哈，恭喜了。