struts2基本配置

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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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