配置 Struts2 Hello World
http://javaweb.group.iteye.com/group/wiki/1505-struts2-under-helloworld---how-to-make-the-first-of-the-running-struts2
在刚刚下载的struts2-1-6目录下的lib中复制出如下六个文件
commons-logging-1.0.4.jar
freemarker-2.3.8.jar
ognl-2.6.11.jar
struts2-core-2.0.6.jar
xwork-2.0.1.jar
以及（因为是struts2-1-6版本的。所以一下这个文件也必不可少）
commons-fileupload-1.2.1
然后粘贴到WebRoot/WEB-INF/lib即可；
第四步：
WebRoot目录下新建一个login.jsp
代码如下
login.jsp
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%>
<%
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>My JSP 'login.jsp' starting page</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>
<form action="login.action" method="post">
username: <input name="username" type="text"><br>
password: <input name="password" type="password"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
第五步：
修改WEB-INF下的web.xml文件
代码如下
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>struts2</filter-name>
<!-- 控制器 -->
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<!-- 任何请求均有过滤器 -->
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
第六步：
新建action
在src目录下新建包com.test.action
在包中新建一个action代码如下
LoginAction.java
package com.test.action;
public class LoginAction
{
//getter和setter方法 就是根据这里的方法名来匹配客户端的信息
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;
}
public String execute() throws Exception
{
return "success";
}
//对应表单上的
private String username;
private String password;
}
第七步：
struts配置文件
在src目录下新建一个struts.xml代码如下：
<?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="struts2" extends="struts-default">
<action name="login" class="com.test.action.LoginAction">
<!-- result没有名字是默认的success -->
<result name="success">/result.jsp</result>
</action>
</package>
</struts>
注意，struts.xml中有句话是
!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"
"http://struts.apache.org/dtds/struts-2.0.dtd">
红色这句可能会报错，解决的方法是 将“http://”字样去掉 其他我不知道还有什么方法，有高手知道请指点一二；
第八步；
新建result文件
在WebRoot目录下新建一个result.jsp文件 代码如下：
<%@ page language="java" import="java.util.*" pageEncoding="ISO-8859-1"%> <% 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>My JSP 'result.jsp' starting page</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> helloworld username: ${requestScope.username }<br> password: ${requestScope.password } </body> </html>
