Strtu2框架
1.控制器:ActionServlet充当控制层
2.模型层:由ActionForm及业务JavaBean实现
3.视图:用户的看到并与之交互的界面 由struts标签库和jsp页面实现的视图层
第一个简单的Struts2的程序
(1)创建工程,将Struts2的支持类库的web_inf目录下的lib文件拷贝到工程下的lib目录下,并添加到工程中
(2)在web.xml中生命Struts2提供的过滤器
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="
http://www.w3.org/2001/XMLSchema-instance" xmlns="
http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="
http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>MyStrut2</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>MyStrut2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyStrut2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
<web-app xmlns:xsi="




<display-name>MyStrut2</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<filter>
<filter-name>MyStrut2</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>MyStrut2</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
(3)在工程src的目录下,创建struts.xml文件,代码如下
<?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">
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.3//EN"
"

<struts>
<package name="default" namespace="/" extends="struts-default">
<action name="first">
<result>/first.jsp</result>
</action>
</package>
</struts>
(4)创建index.jsp和first.jsp
<body>
<a href="first.action">请求Strut2</a>
</body>
<a href="first.action">请求Strut2</a>
</body>
<body>
第一个Struts2程序<br>
</body>
第一个Struts2程序<br>
</body>
Action:Struts的重要对象,在Struts2API中,Action对象是一个接口
