首页jsp用request对象设计实现一个简单的计算加减乘除运算的网页程序

jsp用request对象设计实现一个简单的计算加减乘除运算的网页程序

时间: 2023-05-24 11:01:05 浏览: 130

可以通过request对象获取输入的两个数和运算符，然后根据运算符进行相应的计算。以下是一个简单的示例代码： <%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%> <!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>计算器</title> </head> <body> <form method="post"> <input type="number" name="num1"> <select name="operator"> <option value="+">+</option> <option value="-">-</option> <option value="*">*</option> <option value="/">/</option> </select> <input type="number" name="num2"> <input type="submit" value="计算"> </form> <% if(request.getMethod().equalsIgnoreCase("post")) { int num1 = Integer.parseInt(request.getParameter("num1")); int num2 = Integer.parseInt(request.getParameter("num2")); String operator = request.getParameter("operator"); int result; switch(operator) { case "+": result = num1 + num2; break; case "-": result = num1 - num2; break; case "*": result = num1 * num2; break; case "/": result = num1 / num2; break; default: result = 0; } out.print(num1 + " " + operator + " " + num2 + " = " + result); } %> </body> </html>

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