Struts2 HelloWorld实现

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1、创建javaweb项目并且导入需要的包（此处用的是Struts2.3）

2、创建web.xml配置文件并且完成配置

<?xml version="1.0" encoding="UTF-8"?><web-app id="WebApp_9" 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">    <display-name>Struts Blank</display-name>    <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>    </filter-mapping>    <welcome-file-list>        <welcome-file>index.jsp</welcome-file>    </welcome-file-list></web-app>

3、创建cn.xm.action包并且在其中创建HelloAction类

package cn.xm.action;import com.opensymphony.xwork2.ActionSupport;public class HelloAction extends ActionSupport{    @Override    public String execute() throws Exception {        // TODO Auto-generated method stub        return SUCCESS;    }}

4、在src下创建struts.xml配置文件

<?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.enable.DynamicMethodInvocation" value="false" />    <constant name="struts.devMode" value="true" />    <package name="default" namespace="/" extends="struts-default">        <action name="Hello" class="cn.xm.action.HelloAction">        <result name = "success">show.jsp</result>        </action>    </package></struts>

4、在WebContent下创建show.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"    pageEncoding="ISO-8859-1"%><!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1"><title>Insert title here</title></head><body>HelloWorld!</body></html>

5、在tomcat上启动该项目在url中输入地址得到HelloWorld！这里写图片描述

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