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Struts2学习之路_1_登录

2014-04-29 09:16 120 查看
PS：因为这是第一次贴Struts2的代码，所以把Struts.xml和web.xml我都会贴出来，之后如果有大的改动我才会继续吧这个两个xml贴出来。

1、代码

1.1、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.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>

<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>

</web-app>


1.2、Struts.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"http://struts.apache.org/dtds/struts-2.3.dtd">

<struts>

<!--  原始的，可以用来参考

<constant name="struts.enable.DynamicMethodInvocation" value="false" />
<constant name="struts.devMode" value="true" />
<package name="default" namespace="/" extends="struts-default">

<default-action-ref name="index" />

<global-results>
<result name="error">/error.jsp</result>
</global-results>

<global-exception-mappings>
<exception-mapping exception="java.lang.Exception" result="error"/>
</global-exception-mappings>

<action name="index">
<result type="redirectAction">
<param name="actionName">HelloWorld</param>
<param name="namespace">/example</param>
</result>
</action>
</package>
-->

<constant name="struts.devMode" value="true" />
<!-- 如果value=true 开启开发模式，可以改完xml里面的东西就能自动刷新，不需要重新部署服务器 -->

<package name="default"  extends="struts-default">
<action name="LoginAction_2014_4_28" class="com.god.action.LoginAction_2014_4_28">
<result name="success">/2014_4_28_welcome_lx_01.jsp</result>
<result name="input">/2014_4_28_login_lx_01.jsp</result>
</action>
</package>

<include file="example.xml"/>
<!-- Add packages here -->
</struts>


1.3、两个页面代码

1.3.1、2014_4_28_login_lx_01.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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 '2014_4_28_login_lx_01.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>
<center>
<div>

</div>
<h3>这是一个简单的Struts 2应用</h3>
<br/><hr/>
<form  action="LoginAction_2014_4_28.action" method="post">
用户名：<input name="uname" type="text"/><br/>
密码：<input name="upasswd" type="text"/><br/>
<input type="submit" value="提交"/>
</form>
</center>
</body>
</html>


1.3.1、2014_4_28_welcome_lx_01.jsp

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
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 '2014_4_28_welcome_lx_01.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><center>
<div>

</div>
<h3>一个简单的Struts 2应用</h3>
<br/><hr/>
${uname}欢迎您！
</center>

</body>
</html>

1.4action代码

package com.god.action;

import com.opensymphony.xwork2.ActionSupport;

public class LoginAction_2014_4_28 extends ActionSupport {
org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter d;
private String uname;
private String upasswd;
public String getUname() {
return uname;
}
public void setUname(String uname) {
this.uname = uname;
}
public String getUpasswd() {
return upasswd;
}
public void setUpasswd(String upasswd) {
this.upasswd = upasswd;
}

public String execute(){// 类似于servlet的doGet和doPost方法
if(uname.equals("fang")&&upasswd.equals("123")){
return SUCCESS; //这两个return的东西要继承ActionSupport之后才能使用。
}else{
return INPUT;
}
}
}


2、效果截图

2.1、2014_4_28_login_lx_01.jsp



2.2、2014_4_28_welcome_lx_01.jsp

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