struts2学习之一简单范例
简单范例
1、下载struts2.0.11-all.rar
2、开发环境:myEclipse6.0
Servelet container Tomcat6.0
3、工程示例
new-->web project
4、手工配置
1)新建jsp页面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 type="text" name="username"><br>
password:<input type="password" name="password"><br>
<input type="submit" value="submit">
</form>
</body>
</html>
同时在tomcat的server.xml文件中加入<Context path="/struts2" docBase="D:\workspace\struts2\WebRoot" reloadable="true"/>
2)配置必要的jar包,拷贝到lib下
common-logging.jar
freemarker.jar
ognl.jar
struts2-core.jar
xwork.jar
3)在WEB-INF目录下的web.xml文件中添加以下过滤器
<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>
4）新建类LoginAction
package com.test.action;
import java.util.Map;
import com.opensymphony.xwork2.ActionContext;
import com.opensymphony.xwork2.ActionSupport;
public class LoginAction extends ActionSupport
{
private String username;
private String password;
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";
}
}
5)新建result.jsp
...
<body>
username:${requestScope.username} <br>
</body>
...
6)struts.xml文件放在src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 name="success">result.jsp</result>
</action>
</package>
</struts>
7)流程
login.jsp--->提交后---->struts.xml文件中找到name=login的Action-->根据页面上的值和action的set方法，
自动地将值赋给相应的变量--》然后执行action中execute()方法--》根据方法中返回结果跳转到所标识的页面