📄 operators.jsp

📁 机械工业出版社的《jsp2.0动态网站开发实例指南》的源代码

💻 JSP

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<!--operator.jsp-->
<%@ page isELIgnored="false" %>
<html>
<head>
<title>JSP EL Operators</title>
</head>
<body>
	<table border="1">
    <thead>
	    <td><b>EL Expression</b></td>
	    <td><b>Result</b></td>
	  </thead>
	  <tr>
	  	<td>\${20 + 3}</td>
	  	<td>${20 + 3}</td>
	  </tr>
	  <tr>
	  	<td>\${20 - 3}</td>
	  	<td>${20 - 3}</td>
	  </tr>
	  <tr>
	  	<td>\${20 * 3}</td>
	  	<td>${20 * 3}</td>
	  </tr>
	  <tr>
	    <td>\${20 / 3}</td>
	    <td>${20 /3}</td>
	  </tr>
	  <tr>
	    <td>\${20 mod 3}</td>
	    <td>${20 mod 3}</td>
	  </tr>
	  <tr>
	    <td>\${5==5}</td>
	    <td>${5==5}</td>
	  </tr>
	  <tr>
	    <td>\${5!=5}</td>
	    <td>${5!=5}</td>
	  </tr>
	  	  <tr>
	    <td>\${5<5}</td>
	    <td>${5<5}</td>
	  </tr>
	  	  <tr>
	    <td>\${5 gt 5}</td>
	    <td>${5 gt 5}</td>
	  </tr>
	  	  <tr>
	    <td>\${5 le 5}</td>
	    <td>${5 le 5}</td>
	  </tr>
	  <tr>
	    <td>\${5 ge 5}</td>
	    <td>${5 ge 5}</td>
	  </tr>
	  <tr>
	    <td>\${ 5==5 && 6==7}</td>
	    <td>${ 5==5 && 6==7}</td>
	  </tr>
	  <tr>
	    <td>\${ 5==5 || 6==7}</td>
	    <td>${ 5==5 || 6==7}</td>
	  </tr>
	  <tr>
	    <td>\${ not (5!=6)}</td>
	    <td>${ not (5!=6)}</td>
	  </tr>
	  <tr>
	    <td>\${empty StringNull}</td>
	    <td>${empty StringNull}</td>
	  </tr>	  
    <tr>
      <td>\${(1==2) ? 3 : 4}</td>
      <td>${(1==2) ? 3 : 4}</td>
    </tr>
	</table>
</body>
</html>

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