1.Actions是Struts2框架的核心,每個URL映射到特定的action
2.struts目前使用的不多，問題漏洞反饋比較多，框架出來的比較早，學習下基本的使用，實戰項目用的不多
代碼倉庫：https://gitee.com/DerekAndroid/strutsOne.git
參考教程：https://www.w3cschool.cn/struts_2/struts_examples.html
效果：
index.jsp
<%--
Created by IntelliJ IDEA.
User: agen
Date: 2019/12/29
Time: 15:21
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
<h1>Hello World From Struts2</h1>
<%--Actions是Struts2框架的核心,每個URL映射到特定的action--%>
<form action="hello">
<label for="name">Please enter your name</label><br/>
<input type="text" name="name" id="name" placeholder="輸入error跳轉到error.jsp頁面"/>
<input type="submit" value="Say Hello"/>
</form>
<form action="one">
<input type="submit" value="直接跳轉到one.jsp"/>
</form>
<%--攔截器+--%>
<%--攔截器在概念上與servlet過濾器或JDK代理類相同。攔截器允許橫切功能，把action以及框架分開實現。--%>
<form action="interceptor">
<label for="name">Please enter your name</label><br/>
<input type="text" name="name" />
<input type="submit" value="攔截器"/>
</form>
<%--結果類型Result：Redirect Action示例--%>
<form action="redirect">
<input type="submit" value="結果類型：Redirect Action示例"/>
</form>
<%--驗證框架--%>
<%--Struts的核心中的驗證框架，可在執行action方法之前，幫助應用程序運行規則執行驗證--%>
<div>驗證框架</div>
<s:form action="empinfo" method="post">
<s:textfield name="name" label="Name" size="20" />
<s:textfield name="age" label="Age" size="20" />
<s:submit name="submit" label="Submit" align="center" />
</s:form>
<%--Struts2 應用程序可以使用Java5註解來替代XML和Java屬性的配置--%>
<div>Struts2註解</div>
<s:form action="empinfotwo" method="post">
<s:textfield name="name" label="Name" size="20" />
<s:textfield name="age" label="Age" size="20" />
<s:submit name="submit" label="Submit" align="center" />
</s:form>
</body>
HelloWorld.jsp
<%--
Created by IntelliJ IDEA.
User: agen
Date: 2019/12/29
Time: 15:28
To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
<head>
<title>Hello World</title>
</head>
<body>
Hello World,<s:property value="name"/>
</body>
</html>
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>
<constant name="struts.devMode" value="true" />
<package name="helloworld" extends="struts-default">
<!-- 直接跳轉jsp頁面-->
<action name="one">
<result>/one.jsp</result>
</action>
<action name="redirect">
<result name="success" type="redirect">
<param name="location">
/one.jsp
</param >
</result>
</action>
<action name="hello"
class="strust.HelloWorldAction"
method="execute">
<result name="success">/HelloWorld.jsp</result>
<result name="error">/error.jsp</result>
</action>
<action name="interceptor"
class="strust.InterceptorOne"
method="execute">
<interceptor-ref name="params"/>
<interceptor-ref name="timer" />
<result name="success">/HelloWorld.jsp</result>
</action>
<action name="empinfo"
class="strust.Employee"
method="execute">
<result name="input">/index.jsp</result>
<result name="success">/success.jsp</result>
</action>
</package>
</struts>
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<display-name>Struts 2</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>struts2</filter-name>
<filter-class>
org.apache.struts2.dispatcher.FilterDispatcher
</filter-class>
<init-param>
<param-name>struts.devMode</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>struts2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
