碎片化 | 第四阶段-30-Struts2入门示例流程梳理-视频

1：编写hello.jsp

2：编写HelloAction.java

    controller：
        public @ResponseBody String XXXX(String name){...}

    action:
        private String name;

3：配置web.xml中Struts2的启动项StrutsPrePareAndExecuteFilter

    <!-- struts2的启动拦截 -->
    <filter>
        <filter-name>strutsMVC</filter-name>
        <filter-class>org.apache.struts2.dispatcher.filter.StrutsPrepareAndExecuteFilter</filter-class>
    </filter>
    <filter-mapping>
        <filter-name>strutsMVC</filter-name>
        <url-pattern>*.action</url-pattern>
    </filter-mapping>

4：添加struts.xml
    <!-- namespace默认是/ -->
    <package name="demo" extends="struts-default" namespace="/demo">
        <!--name代表的请求路径 ，class对应的就是请求处理类，method默认的就是execute -->
        <action name="hello" class="com.xdl.action.HelloAction" method="execute">
            <!-- result代表的就是方法返回处理结果，type：dispather， -->
            <result name="success" type="dispatcher">/WEB-INF/jsp/hello.jsp</result>
        </action>
    </package>