Struts2构建HelloWorld

1.WEB-INF目录下web.xml 配置filter

<filter>
<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>
<!--拦截器匹配的路径映射-->
</filter-mapping>

2.src目录下新建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>
<package name="default" namespace="/" extends="struts-default">
<action name="hello" class="com.action.HelloWorldAction">
<result>/hello.jsp</result>
</action>
</package>
</struts>

3.action 配置

地址栏访问 hello.action 时跳转到/hello.jsp页面

<action name="hello" class="com.learnstruts2.action.HelloWorldAction" method="hello">
<result>/hello.jsp</result>
</action>

class 为执行的java类，默认为ActionSuport ，method默认为excute()

<action name="show" class="com.learnstruts2.action.HelloAction" method="show">
<result name="show">/show.jsp</result>
</action>

result为返回值，默认为SUCCESS

4.HelloWroldAction.java代码

package com.action;

import com.opensymphony.xwork2.Action;

public class HelloWorldAction implements Action{

@Override
public String execute() throws Exception {
// TODO Auto-generated method stub
return "success";
}

public String hello() throws Exception {
// TODO Auto-generated method stub
return SUCCESS;
}
}

P.S.

1. result name值为Action类返回String，默认为SUCCESS

2. Action配置中method值为Action类中方法名，默认为excute()