jsp---简单的计算器(2)

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

摘自 张大鹏的博客