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>
