struts2-1.struts初感

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初探 struts2 有感

1. jar包的安装：

包名

说明

commons-logging-1.0.4.jar

日志管理

freemarker-2.3.8.jar

表现层框架，定义了struts2的可视组件主题（theme）

ognl-2.6.11.jar

OGNL表达式语言，struts2支持该EL

struts2-core-2.0.10.jar

struts2的核心库

xwork-2.0.4.jar

webwork的核心库，自然需要它的支持

2. 目录结构：

3. 代码演示

web.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<web-appversion="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">

<welcome-file-list>

<welcome-file>MyJsp.jsp</welcome-file>

</welcome-file-list>

<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>

</web-app>

struts.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<!DOCTYPEstrutsPUBLIC

"-//Apache Software Foundation//DTD Struts Configuration2.0//EN"

"http://struts.apache.org/dtds/struts-2.0.dtd">

<packagename="helloworld"extends="struts-default"namespace="/">

<actionname="welcome"class="com.hf.star.WelcomeAction">

<resultname="success">/welcome.jsp</result>

<resultname="fail">/error.jsp</result>

</action>

</package>

</struts>

WelcomeAction.java

package com.hf.star;

import com.opensymphony.xwork2.ActionSupport;

public class WelcomeAction extends ActionSupport{

private Stringusername;

public String getUsername() {

returnusername;

}

public void setUsername(String username) {

this.username = username;

}

@Override

publicStringexecute()throws Exception {

// TODO Auto-generatedmethod stub

if("a".equalsIgnoreCase(username)){

return"fail";

}

return"success";

}

Myjsp.jsp

<%@ pagelanguage="java"import="java.util.*"pageEncoding="utf-8"%>

<!DOCTYPEHTMLPUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

</head>

<body>

<formaction="/drp1.0/welcome.action"methord="get">

<inputtype="text"name="username"/>

<inputtype="submit"value="提交"/>

</form>

</body>

</html>

4. 一些知识点：