new15.jsp
<%@ 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>
使用getattribute获取数据<br>
<%
double d1 = (Double)request.getAttribute("data1");
double d2 = (Double)request.getAttribute("data2");
double d3 = (Double)request.getAttribute("data3");
out.println(d1 + "+" + d2 + "=" + d3);
%>
<br>
使用getrequest获取数据<br>
<%
String str1 = request.getParameter("data1");
String str2 = request.getParameter("data2");
out.println(str1 + "+" + str2 + "=" + (Double.parseDouble(str1) + Double.parseDouble(str2)));
%>
<br>
</body>
</html>
