struts2基本配置

struts.xml 放在src目录下

<?xml version="1.0" encoding="UTF-8"?>
<struts>
    <package name="struts2 " namespace="/" extends="struts-default">
        <action name="sum" class="com.umgsai.test.FirstAction">
            <result name="positive ">/positive.jsp</result>
            <result name="negative ">/negative.jsp</result>
        </action>
    </package>
</struts>

web.xml中添加配置

<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>

lib目录下添加jar包

asm-x.x.jar
asm-commons-x.x.jar
asm-tree-x.x.jar
commons-io-X.X.X.jar
commons-lang3-X.X.X.jar
commons-fileupload-X.X.X.jar
freemarker-X.X.X.jar
javassist-X.X.X.jar
ognl-X.X.X.jar
struts2-core-X.X.X.X.jar
xwork-core-X.X.X.jar

java文件

package com.umgsai.test;  

import com.opensymphony.xwork2.ActionSupport;  

publicclass FirstAction extends ActionSupport {  

/**

    *  

    */

privatestaticfinallong serialVersionUID = 1L;  

privateint operand1;  

privateint operand2;  

public String execute() throws Exception {  

if (getSum() >= 0) // 如果代码数和是非负整数，跳到positive.jsp页面

       {  

return"positive";  

       } else// 如果代码数和是负整数，跳到negative.jsp页面

       {  

return"negative";  

       }  

   }  

publicint getOperand1() {  

return operand1;  

   }  

publicvoid setOperand1(int operand1) {  

       System.out.println(operand1);  

this.operand1 = operand1;  

   }  

publicint getOperand2() {  

return operand2;  

   }  

publicvoid setOperand2(int operand2) {  

       System.out.println(operand2);  

this.operand2 = operand2;  

   }  

publicint getSum() {  

return operand1 + operand2; // 计算两个整数的代码数和

   }  

}

sum.jsp文件

<%@ page language="java"import="java.util.*"pageEncoding="GBK"%>

<%@ taglib prefix="s"uri="/struts-tags"%>

<%  

String path = request.getContextPath();  

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">

<title>输入操作数</title>

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

<!--

   <link rel="stylesheet" type="text/css" href="styles.css">

   -->

</head>

<body>

       求代数和  

<br/>

<s:formaction="sum"namespace="/">

<s:textfieldname="operand1"label=" 操作数1"/>

<s:textfieldname="operand2"label=" 操作数2"/>

<s:submitvalue="代数和"/>

</s:form>

</body>

</html>

positive.jsp页面

<%@ page language="java"import="java.util.*"pageEncoding="GBK"%>

<%@ taglib prefix="s"uri="/struts-tags"%>

<%  

String path = request.getContextPath();  

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">

<title>显示代数和</title>

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

<!--

   <link rel="stylesheet" type="text/css" href="styles.css">

   -->

</head>

<body>

       代数和为非负整数  

<h1>

<s:propertyvalue="sum"/>

</h1>

</body>

</html>

negative.jsp页面

<%@ page language="java"import="java.util.*"pageEncoding="GBK"%>

<%@ taglib prefix="s"uri="/struts-tags"%>

<%  

String path = request.getContextPath();  

String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";  

%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>

<head>

<basehref="<%=basePath%>">

<title>显示代数和</title>

<metahttp-equiv="pragma"content="no-cache">

<metahttp-equiv="cache-control"content="no-cache">

<metahttp-equiv="expires"content="0">

<metahttp-equiv="keywords"content="keyword1,keyword2,keyword3">

<metahttp-equiv="description"content="This is my page">

<!--

   <link rel="stylesheet" type="text/css" href="styles.css">

   -->

</head>

<body>

       代数和为负整数  

<h1>

<s:propertyvalue="sum"/>

</h1>

</body>

</html>

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