main.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <jsp:include page="circle.jsp" flush="true"> <jsp:param name="radius" value="3"/> </jsp:include> <br> <jsp:include page="ladder.jsp"> <jsp:param value="2" name="shang"/> <jsp:param value="2" name="xia"/> <jsp:param value="2" name="gao"/> </jsp:include> </body> </html>
circle.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title>My JSP 'circle.jsp' starting page</title> </head> <body> <% String a=request.getParameter("radius"); double b=Double.parseDouble(a); double PI=3.14; out.print("圆面积:"+(PI*b*b)); %> </body> </html>
ladder.jsp
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> </head> <body> <% String a=request.getParameter("shang"); String b=request.getParameter("xia"); String c=request.getParameter("gao"); double d=Double.parseDouble(a); double e=Double.parseDouble(b); double f=Double.parseDouble(c); out.print("梯形面积:"+((d+e)*f/2)); %> </body> </html>
