struts2完整的例子（2）

一、导入5大核心jar包。1）Commons-logging.jar  --------------   用于通用日志处理2）Freemarker.jar  --------------   表现层框架，定义了struts2的可视组件主题3）Ognl.jar  --------------   OGNL表达式语言，struts2支持该EL4）Struts2-core.jar  --------------    struts2 2.0.11.2的核心库5）Xwork.jar  --------------   webwork的核心库[如果要整合spring需要将这个jar包导入]。struts2-spring-plugin.jar   --------------   struts2的spring插件二、web.xml文件配置：<filter>  <filter-name>struts2</filter-name>  <filter-class>org.apache.struts2.dispatcher.FilterDispatcher</filter-class>  </filter>  <filter-mapping>  <filter-name>struts2</filter-name>  <url-pattern>/*</url-pattern>  </filter-mapping>三、请求的url都以*.action为后缀，被FilterDispatcher拦截四、WEB-INF/classes目录下添加struts.xml文件。五、实现控制器：public class Login {Private static final long serialVersionUID = 1L;private static final String SUCCESS = "success";private static final String FAILER = "failer";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;}public String execute() throws Exception{if("nick".equalsIgnoreCase(userName)){setUserName(userName);return SUCCESS;}else{return FAILER;}}六、配置struts.xml文件<?xml version="1.0" encoding="UTF-8" ?><!DOCTYPE struts PUBLIC    "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"    "http://struts.apache.org/dtds/struts-2.0.dtd"><struts><package name="test" extends="struts-default"><action name="Login" class="com.dcsoft.struts.login.actions.Login" ><result name="success">/index.jsp</result><result name="failer">/admin/login.jsp</result></action></package></struts>七、跟踪用户状态ActionContext类，ActionContext context = ActionContext.getContext();context.getSession().put("ppp", "sessionName"); //获取的不是httpsession对象，是个map对象context.put("qqq", "requestName");Action的属性可以用来封装请求参数，也可以把参数传入下个页面。setName(“name”);八、输出处理信息：1、ValueStack vs = (ValueStack)request.getAttribute(“struts.valueStack”);String name = (String)vs.findValue(“name”);2、使用struts标签输出。九、完成国际化国际化的资源文件：base_name_语言_国家.properties在struts.properties中添加：struts.custom.i18n.resources = base_name;输出国际化信息：<s:text name=””  />                <s:property value=”%{getText(“”)}” />