码迷,mamicode.com
首页 > 编程语言 > 详细

Javaweb的el操作

时间:2016-05-13 00:10:58      阅读:174      评论:0      收藏:0      [点我收藏+]

标签:

Javaweb的el操作

技术分享
<span style="font-size:18px;"><%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
  <head>
    <base href="<%=basePath%>">
    
    <title>My JSP 'eloperate.jsp' starting page</title>
    
	<meta http-equiv="pragma" content="no-cache">
	<meta http-equiv="cache-control" content="no-cache">
	<meta http-equiv="expires" content="0">    
	<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
	<meta http-equiv="description" content="This is my page">
	<!--
	<link rel="stylesheet" type="text/css" href="styles.css">
	-->
<title>el运算</title>
  </head>
  
  <body>
   <table>
	  <tr >
	     <td>
	       <table border="1">
	          <tr>
	             <th colspan="2">四则运算:</th>
	          </tr>
	          <tr>
	             <th>操作符</th>
	             <th>操作结果</th>
	          </tr>
	          <tr>
	            <td>\${1+2}</td>
	            <td>${1+2}</td>
	          </tr>
	           <tr>
	            <td>\${1-2}</td>
	            <td>${1-2}</td>
	          </tr>
	           <tr>
	            <td>\${1*2}</td>
	            <td>${1*2}</td>
	          </tr>
	           <tr>
	           <td>\${6/3}<br/>\${6 div 3}</td>
	            <td>${6/3}<br/>${6 div 3}</td>
	          </tr>
	          <tr>
              <td>\${9%4}<br/>\${9 mod 4}</td>
                <td>${9%4}<br/>${9 mod 4}</td>
              </tr>
	        </table>
	     </td>	
	      <td>
	       <table border="1">
	          <tr>
	             <th colspan="2">比较运算:</th>
	          </tr>
	          <tr>
	             <th>操作符</th>
	             <th>操作结果</th>
	          </tr>
	          <tr>
	            <td>\${2==1}<br/>\${2 eq 1}</td>
	            <td>${2==1}<br/>${2 eq 1}</td>
	          </tr>
	           <tr>
	            <td>\${2!=1}<br/>\${2 ne 1}</td>
	            <td>${2!=1}<br/>${2 ne 1}</td>
	          </tr>
	           <tr>
	           <td>\${2<1}<br/>\${2 lt 1}</td>
	            <td>${2<1}<br/>${2 lt 1}</td>
	          </tr>
	           <tr>
	           <td>\${2>1}<br/>\${2 gt 1}</td>
	            <td>${2>1}<br/>${2 gt 1}</td>
	          </tr>
	          <tr>
                <td>\${2<=1}<br/>\${2 le 1}</td>
	            <td>${2<=1}<br/>${2 le 1}</td>
              </tr>
               <tr>
                <td>\${2>=1}<br/>\${2 ge 1}</td>
	            <td>${2>=1}<br/>${2 ge 1}</td>
              </tr>
	        </table>
	     </td>  
	      <td>
	       <table border="1">
	          <tr>
	             <th colspan="2">逻辑运算:</th>
	          </tr>
	          <tr>
	             <th>操作符</th>
	             <th>操作结果</th>
	          </tr>
	          <tr>
	             <td>\${true&&false}<br/>\${true and false}</td>
	             <td>${true&&false}<br/>${true and false}</td>
	          </tr>
	           <tr>
	             <td>\${true||false}<br/>\${true or false}</td>
	             <td>${true||false}<br/>${true or false}</td>
	          </tr>
	           <tr>
	           <td>\${2<1}<br/>\${2 lt 1}</td>
	            <td>${2<1}<br/>${2 lt 1}</td>
	          </tr>
	           <tr>
	            <td>\${!false}<br/>\${not false}</td>
	             <td>${!false}<br/>${not  false}</td>
	          </tr>
	          <tr>
                <td>\${2<=1}<br/>\${2 le 1}</td>
	            <td>${2<=1}<br/>${2 le 1}</td>
              </tr>
               <tr>
                <td>\${2>=1}<br/>\${2 ge 1}</td>
	            <td>${2>=1}<br/>${2 ge 1}</td>
              </tr>
	        </table>
	     </td>  
	        <td>
	       <table border="1">
	          <tr>
	             <th colspan="2">特殊运算:</th>
	          </tr>
	          <tr>
	             <th>操作符</th>
	             <th>操作结果</th>
	          </tr>
	          <tr>
	             <td>\${empty null }<br/>\${empty ""}<br/>\${empty 0}<br/>\${empty " "}</nr></td>
	             <td>${empty null }<br/>${empty ""}<br/>${empty 0}<br/>${empty " "}</nr></td>
	          </tr>
	           <tr>
	             <td>\${2>1?'two':'one'}</td>
	             <td>${2>1?'two':'one'}</td>
	          </tr>      
	        </table>
	     </td>  
	  </tr>  
   </table>
  </body>
</html></span>


Javaweb的el操作

标签:

原文地址:http://blog.csdn.net/zhupengqq/article/details/51344017

(0)
(0)
   
举报
评论 一句话评论(0
登录后才能评论!
© 2014 mamicode.com 版权所有  联系我们:gaon5@hotmail.com
迷上了代码!