jsp---简单的计算器
4569 点击·0 回帖
灯火互联
楼主
 |  | |
 | 简单的计算器 01 <%@page language="java" contentType="text/html;charset=gb2312"%> 02 <!DOCTYPE html> 03 <html> 04 <head> 05 <title>简单计算器</title> 06 </head> 07 <body> 08 <h1>简单计算器</h1> 09 <hr /> 10 <form action="result.jsp"> 11 <input type="text" name="number1"/> 12 <select name="ope"> 13 <option value="add">+</option> 14 <option value="minus">-</option> 15 <option value="multiply">*</option> 16 <option value="div">/</option> 17 </select> 18 <input type="text" name="number2"/> 19 <input type="submit" value="计算" /> 20 <input type="reset" value="重置"> 21 </form> 22 </body> 23 </html> 01 <%@page language="java" contentType="text/html;charset=gb2312"%> 02 <%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c" %> 03 <!DOCTYPE html> 04 <html> 05 <head> 06 <title>简单计算器</title> 07 </head> 08 <body> 09 <h1>简单计算器</h1> 10 <hr /> 11 <c:if test="${param.ope == 'add'}"> 12 ${param.number1} + ${param.number2} = ${param.number1 + param.number2} 13 </c:if> 14 <c:if test="${param.ope == 'minus'}"> 15 ${param.number1} - ${param.number2} = ${param.number1 - param.number2} 16 </c:if> 17 <c:if test="${param.ope == 'multiply'}"> 18 ${param.number1} * ${param.number2} = ${param.number1 * param.number2} 19 </c:if> 20 <c:if test="${param.ope == 'div'}"> 21 ${param.number1} / ${param.number2} = ${param.number1 / param.number2} 22 </c:if> 23 </body> 24 </html> 这里有个小插曲，就是在web-INF文件夹下面，在lib的目录中必须有jstl.jar和standard.jar这两个jar包 | |
 |  |