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>

秒客网

配置 Struts2 Hello World

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