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"> <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></web-app>srtuts.xml (WEB-INF/classes下)
<?xml version="1.0" encoding="GBK" ?><!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN" "http://struts.apache.org/dtds/struts-2.0.dtd"><struts> <package name="struts" extends="struts-default"> <action name="Login" class="HelloWorld.LoginAction"> <result name="success">/helloworld/welcome.jsp</result> <result name="error">/helloworld/error.jsp</result> </action> </package></struts>
Action：
package HelloWorld;import com.opensymphony.xwork2.Action;import com.opensymphony.xwork2.ActionContext;
public class LoginAction implements Action{
private String username; private String password; private String[] books;
public String[] getBooks() {
return books;
}public void setBooks(String[] books) { this.books = books;}public String execute() throws Exception{ if(this.getUsername().equals("admin")&&this.getPassword().equals("1234")){ ActionContext.getContext().getSession().put("user", this.getUsername()); BookService bs=new BookService(); this.setBooks(bs.getBooks()); return SUCCESS; }else{ return ERROR; } }public String getUsername() { return username;}public void setUsername(String username) { this.username = username;}public String getPassword() { return password;}public void setPassword(String password) { this.password = password;} 
}
BookService.java
package HelloWorld;public class BookService { private String[] books=new String[]{ "Spring 2.0", "Hibernate 3.2", "Struts 2.0" }; public String[] getBooks(){ return books; }}
index.jsp
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%><%@ taglib prefix="s" uri="/struts-tags" %><html> <head> <title></title> </head> <body> <s:form action="Login"> <s:textfield name="username" label="用户名"></s:textfield> <s:password name="password" label="密码"></s:password> <s:submit value="login"></s:submit> </s:form> </body></html>
welcome.jsp
<%@ page language="java" contentType="text/html; charset=gb2312" pageEncoding="gb2312"%><%@ page isELIgnored="false" %> <%@ taglib prefix="s" uri="/struts-tags" %><%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %><html> <head> <title></title> </head> <body> 欢迎${sessionScope.user}登陆 <c:out value="${requestScope.now}"></c:out> <br> <table border="1"> <s:iterator value="books" status="index"> <s:if test="#index.odd==true"> <tr style="background-color=#cccccc"> </s:if> <s:else> <tr> </s:else> <td>书名:</td> <td><s:property/></td> </tr> </s:iterator> </table> </body></html>
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