struts2学习笔记之二_在项目中引入struts2
在项目中引入struts2
1.创建web项目
2.引入struts2类库
${struts解压目录}/app/struts2-blank-2.1.8.1.war/web-inf/lib/*.jar
3.创建action.
package cn.itcast.struts2.action/*** HelloWorldAction*/
public class HelloWorldAction {
public String execute(){
System.out.println("hello world");
return null ;
}
}
4.创建struts配置文件.src/struts.xml
dtd:struts-core.jar/struts-2.1.7.dtd/30行
<?xml version="1.0"?>
<!DOCTYPE struts PUBLIC
"-//Apache Software Foundation//DTD Struts Configuration 2.1.7//EN"
"http://struts.apache.org/dtds/struts-2.1.7.dtd">
<struts>
<package name="HelloWorldPkg" namespace="/helloworld">
<action name="HelloWorldAction"
class="cn.itcast.struts2.action.HelloWorldAction" />
</package>
</struts>
5.配置struts2的过滤器web-inf/web.xml文件中
类:org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4" xmlns="http://java.sun.com/xml/ns/j2ee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<filter>
<filter-name>action</filter-name>
<filter-class>org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>action</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>