确定使用JSP实现么？
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Insert title here</title>
</head>
<%
String temp1 = request.getParameter("num1");
String temp2 = request.getParameter("num2");
String max = null;
if (temp1 != null && temp2 != null) {
int a = Integer.parseInt(temp1);
int b = Integer.parseInt(temp2);
max = String.valueOf(Math.max(a, b));
}
%>
<body>
<form action="index.jsp">
请输入第一个数: <br>
<input type="text" id="num1" name="num1" value="<%=(temp1 == null ? "" : temp1)%>">
请输入第二个数: <br>
<input type="text" id="num2" name="num2" value="<%=(temp2 == null ? "" : temp2)%>">
<input type="submit" value="提交">
</form>
两者的最大值是:
<input type="text" id="max" name="max"
value="<%=(max == null ? "" : max)%>">
</body>
</html>
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