<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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>
<base href="<%=basePath%>">
<title>My JSP 'main.jsp' starting page</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<body>
<%double r=1,a=2,b=3,c=4; %>
<br/>加载circle.jsp计算半径为<%=r %>的圆的面积：
<jsp:include page="circle.jsp">
<jsp:param value="<%=r %>" name="sideR"/>
</jsp:include>
<p>-----------------</p>
<b/>加载laddrt.jsp的上下底和高<%=a %><%=b %><%=c %>的梯形面积：
<jsp:include page="ladder.jsp">
<jsp:param value="<%=a %>" name="sideA"/>
<jsp:param value="<%=b %>" name="sideB"/>
<jsp:param value="<%=c %>" name="sideC"/>
</jsp:include>
</body>
</html>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%! public String getArea(double r)
{
if(r>0)
{
double area=r*r*3.14;
return""+area;
}
else
{
return("半径小于0有误,无法计算");
}
}
%>
<%
String sideR=request.getParameter("sideR");
double r=Double.parseDouble(sideR);
%>
<br><br>我是被加载的文件，负责计算圆的面积<br>
给我传递的半径是：<%=r%>
<br>圆的面积是：<%=getArea(r) %>
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%! public String getArea(double a,double b,double c)
{
if(a>0&&b>0&&c>0)
{
double area=(a+b)*c/2;
return ""+area;
}
else{
return("梯形的上底、下底、高"+a+" "+b+" "+c+"不能为大于0以外的数字，无法计算面积");
}
}
%>
<%
String sideA=request.getParameter("sideA");
String sideB=request.getParameter("sideB");
String sideC=request.getParameter("sideC");
double a=Double.parseDouble(sideA);
double b=Double.parseDouble(sideB);
double c=Double.parseDouble(sideC);
%>
<br><br>我是被加载的文件，负责计算圆的面积<br>
给我传递的上底、下底、高是：<%=sideA%> <%=sideB %> <%=sideC %>
<br>梯形的面积是：<%=getArea(a,b,c) %>
