编写JSP程序,演示使用EL运算符进行基本运算。 实验步骤: (1)编写JSP程序el_operator.jsp; (2)查看程序运行效果;
时间: 2024-03-12 08:44:33 浏览: 30
以下是el_operator.jsp的代码示例:
```jsp
<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>EL运算符示例</title>
</head>
<body>
<%-- 定义一些变量 --%>
<%
int num1 = 10;
int num2 = 5;
double num3 = 3.14;
boolean flag = true;
String str1 = "Hello";
String str2 = "World";
%>
<%-- 输出变量值 --%>
<h2>EL运算符示例:</h2>
<p>num1 + num2 = ${num1 + num2}</p>
<p>num1 - num2 = ${num1 - num2}</p>
<p>num1 * num2 = ${num1 * num2}</p>
<p>num1 / num2 = ${num1 / num2}</p>
<p>num1 % num2 = ${num1 % num2}</p>
<p>num3 * 2 = ${num3 * 2}</p>
<p>!flag = ${!flag}</p>
<p>str1 + str2 = ${str1 + str2}</p>
</body>
</html>
```
在浏览器中访问el_operator.jsp,将会看到如下运算结果:
EL运算符示例:
num1 + num2 = 15
num1 - num2 = 5
num1 * num2 = 50
num1 / num2 = 2
num1 % num2 = 0
num3 * 2 = 6.28
!flag = false
str1 + str2 = HelloWorld