实现方式：领域对象的Action类设计与属性驱动传参
所用到的 jar 包
1. 配置web.xml文件
<?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>
2. 编写模型类
package bean
;
public class Tri {
private double a
;
private double b
;
private double c
;
public Tri() {
super();
}
public Tri(double a
, double b
, double c
) {
super();
this.a
= a
;
this.b
= b
;
this.c
= c
;
}
public double getA() {
return a
;
}
public void setA(double a
) {
this.a
= a
;
}
public double getB() {
return b
;
}
public void setB(double b
) {
this.b
= b
;
}
public double getC() {
return c
;
}
public void setC(double c
) {
this.c
= c
;
}
}
3. action类
package action
;
import bean
.Tri
;
public class TriAction {
private Tri tri
;
public TriAction() {
super();
}
public TriAction(Tri tri
) {
super();
this.tri
= tri
;
}
public Tri
getTri() {
return tri
;
}
public void setTri(Tri tri
) {
this.tri
= tri
;
}
public String
pd() {
if(tri
.getA()+tri
.getB()>tri
.getC()&&tri
.getA()+tri
.getC()>tri
.getB()&&tri
.getB()+tri
.getC()>tri
.getA()) {
return "ok";
}
else {
return "no";
}
}
}
4.配置struts.xml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>
<package name="default" namespace="/" extends="struts-default">
<action name="oppd" class="action.TriAction" method="pd">
<result name="ok">success.jsp
</result>
<result name="no">input.jsp
</result>
</action>
</package>
</struts>
5. input.jsp页面、successful.jsp页面
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here
</title>
</head>
<body>
<form action="oppd" method="post">
1：
<input type="text" name="tri.a"> <br><br>
2：
<input type="text" name="tri.b"> <br><br>
3：
<input type="text" name="tri.c"> <br><br>
<input type="submit" value="提交">
</form>
</body>
</html>
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>Insert title here
</title>
</head>
<body>
successful
<br><br><br>
周长： ${tri.a}+${tri.b}+${tri.c}
</body>
</html>
