Struts + Spring整合3种方法亲身实践(1)

 

Struts + Spring整合3种方法亲身实践(1)

 

由于最近要做一个项目,用到struts, spring, hibernate;之前我做项目,只用过struts ,hibernate(很落后的表现,呵呵!),所以呢下定决心,练了一把,先写一个最简单的struts程序,输入页面:input.do, 一个文本框,输入信息后,点确确定,跳转到另一页面,显示welcome,**,够简单了吧!为了开发简便快捷,我是在eclipse+myeclipse下完成的,下面我把代码贴出,再加点解释:

Struts-config.xml

<struts-config>

 <data-sources />

 <form-beans >

    <form-bean name="helloWorld" type="com.yourcompany.struts.form.HelloWorldForm" />

</form-beans>

<action-mappings >

    <action

      attribute="helloWorld"

      name="helloWorld"

      path="/helloWorld"

      scope="request"

      type="com.yourcompany.struts.action.HelloWorldAction">

      <forward name="show" path="/show.jsp" />

    </action>

    <action forward="/input.jsp" path="/input" />

</action-mappings>

<message-resources parameter="ApplicationResources" />

</struts-config>

很简单的一个结构,一个input.do进入的输入页面input.jsp,击点确定,跳转到helloworld.do,经他处理后,跳转到show, that’s OK!

 

web.xml

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

<web-app xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" version="2.4" xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee   http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

 <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>3</param-value>

    </init-param>

    <init-param>

      <param-name>detail</param-name>

      <param-value>3</param-value>

    </init-param>

    <load-on-startup>0</load-on-startup>

 </servlet>

 <servlet-mapping>

    <servlet-name>action</servlet-name>

    <url-pattern>*.do</url-pattern>

 </servlet-mapping>

 <jsp-config>

  <taglib>

       <taglib-uri>/tags/struts-bean</taglib-uri>

       <taglib-location>/WEB-INF/struts-bean.tld</taglib-location>

  </taglib>

  <taglib>

       <taglib-uri>/tags/struts-html</taglib-uri>

       <taglib-location>/WEB-INF/struts-html.tld</taglib-location>

  </taglib>

 </jsp-config>

</web-app>

 

HelloWorldAction类:

package com.yourcompany.struts.action;

//节省长度,导入的类就不贴了

publicclass HelloWorldAction extends Action {

    public ActionForward execute(ActionMapping mapping, ActionForm form,

           HttpServletRequest request, HttpServletResponse response) {

       HelloWorldForm helloworld=(HelloWorldForm)form;

       request.setAttribute("helloWorld", helloworld.getMsg());

       return mapping.findForward("show");

    }

}

HelloWorldForm类:

package com.yourcompany.struts.form;

publicclass HelloWorldForm extends ActionForm {

    privatestaticfinallongserialVersionUID = 1L;

    private String msg;

    public ActionErrors validate(ActionMapping mapping,

           HttpServletRequest request) {

       returnnull;

    }

publicvoid reset(ActionMapping mapping, HttpServletRequest request) {

    }

    public String getMsg() {

       returnmsg;

    }

    publicvoid setMsg(String msg) {

       this.msg = msg;

    }

}

 

input.jsp

<%@ page language="java" pageEncoding="ISO-8859-1"%>

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

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html:html lang="true">

 <head>

    <html:base />

    <title><bean:message key="title_input"/></title>

 </head>

 <body>

    <html:form action="/helloWorld" method="POST">

       <bean:message key="welcome"/><html:text property="msg"/>

       <html:submit>sumbit</html:submit>

    </html:form>

 </body>

</html:html>

 

show.jsp

<%@ page language="java" pageEncoding="ISO-8859-1"%>

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

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

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html:html lang="true">

 <head>

    <html:base />

    <title><bean:message key="title_show"/></title>

 </head> 

 <body>

    <bean:message key="input"/>"${helloWorld}"<br/>

 </body>

</html:html>

 

无论哪种方法都要在struts-config.xml里注册一下Spring插件:

在struts-config.xml中加上: (红色为加入部分)

 <message-resources parameter="ApplicationResources" />

 <plug-in className="org.springframework.web.struts.ContextLoaderPlugIn"> 

       <set-property property="contextConfigLocation"     value="/WEB-INF/applicationContext.xml" /> 

 </plug-in>

</struts-config>

为了体现Spring的IOC,我们再加多几个类:
一个接口:

package com.yourcompany.struts.action;

import com.yourcompany.struts.form.HelloWorldForm;

public interface HelloWorldService {

    public abstract String addMesg(HelloWorldForm helloworld);

}

 
实现这个接口的类:

package com.yourcompany.struts.action;

import com.yourcompany.struts.form.HelloWorldForm;

public class HelloWorldServiceImpl implements HelloWorldService{

 

    public String addMesg(HelloWorldForm helloworld) {

       return helloworld.getMsg();

    }

 

}

 

Spring的配置文件: (位置/WEB-INF/applicationContext.xml)

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

<!DOCTYPE beans PUBLIC "-//SPRING//DTD BEAN//EN" "http://www.springframework.org/dtd/spring-beans.dtd">

<beans>

    <bean id="helloWorldService" class="com.yourcompany.struts.action.HelloWorldServiceImpl"></bean>

</beans>

准备工作完成,下一步开始整合