初学struts，helloWorld都出不来，求大神帮忙，谢谢~

package sjzc;

import com.opensymphony.xwork2.ActionSupport;

public class HelloWorldAction extends ActionSupport {

@Override
// String 视图的路径
public String execute() throws Exception {
    System.out.println("执行Action");
    return SUCCESS;
}

}

struts.xml文件
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE struts PUBLIC "-//Apache Software Foundation//DTD Struts Configuration 2.1//EN" "http://struts.apache.org/dtds/struts-2.1.dtd">

<package name="default" namespace="/" extends="struts2-default">

    <action name="helloworld" class="sjzc.HellowWorldAction">
        <result name="" type="">/result.jsp </result>
    </action>
</package>

web.xml
<?xml version="1.0" encoding="UTF-8"?>
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd">

struts2

org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter



struts2
/*

http://my.oschina.net/VincentJiang/blog/118688

struts.xml 配置文件 result “SUCCESS”不要type

/result.jsp

name,type不要，或name="success"