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分享知道JSP页面里使用${}的来
我想知道下面红色部分的作用
请详细说明${}的使用方法
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>公司介绍/${newsClassName }</title>
<body>
<table class="main" width="1003" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td align="center" valign="top"><%@include file="/top.jsp"%></td>
</tr>
<tr>
<td align="center" valign="top"><table width="865" border="0" cellspacing="0" cellpadding="0">
<tr>
<td valign="top"><table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="202" align="center" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr>
<td align="right" valign="top"><img src="/images/about_right.gif" width="10" height="10" /></td>
</tr>
<tr>
<td align="right" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="95" align="center" valign="top"><img src="/images/about_.jpg" width="190" height="85" /></td>
</tr>
<tr>
<td valign="top">
<logic:present name="newsClass">
<logic:iterate id="n" name="newsClass" property="childNewsClasses">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="30" align="right" valign="middle" class="menu"><a href="/articleView/company/010805/${n.flag}/${n.id}.html">${n.name}</a> </td>
</tr>
<tr>
<td align="right" valign="middle"><img src="/images/about_01.gif" width="180" height="13" /></td>
</tr>
</table>
</logic:iterate>
</logic:present>
</td>
</tr>
</table></td>
</tr>
</table></td>
<td width="3"></td>
<td width="660" align="left" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td class="img" width="600" height="195" align="left" valign="top"><img src="/images/about.jpg" width="651" height="187" /></td>
</tr>
<tr>
<td class="content" valign="top">${article.content}</td>
</tr>
</table></td>
</tr>
</table></td>
</tr>
<tr>
<td valign="top"><img src="/images/bgbbottom_01.gif" width="865" height="21" /></td>
</tr>
</table></td>
</tr>
<tr>
<td align="center" valign="top"><%@include file="/bottom.jsp"%></td>
</tr>
</table>
</body>
</html>
请详细说明${}的使用方法
<%@ page contentType="text/html; charset=gb2312" language="java" import="java.sql.*" errorPage="" %>
<%@ taglib uri="http://struts.apache.org/tags-logic" prefix="logic" %>
<%@ taglib uri="http://struts.apache.org/tags-bean" prefix="bean" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>公司介绍/${newsClassName }</title>
<body>
<table class="main" width="1003" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td align="center" valign="top"><%@include file="/top.jsp"%></td>
</tr>
<tr>
<td align="center" valign="top"><table width="865" border="0" cellspacing="0" cellpadding="0">
<tr>
<td valign="top"><table border="0" cellspacing="0" cellpadding="0">
<tr>
<td width="202" align="center" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr>
<td align="right" valign="top"><img src="/images/about_right.gif" width="10" height="10" /></td>
</tr>
<tr>
<td align="right" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="95" align="center" valign="top"><img src="/images/about_.jpg" width="190" height="85" /></td>
</tr>
<tr>
<td valign="top">
<logic:present name="newsClass">
<logic:iterate id="n" name="newsClass" property="childNewsClasses">
<table width="100%" border="0" cellspacing="0" cellpadding="0">
<tr>
<td height="30" align="right" valign="middle" class="menu"><a href="/articleView/company/010805/${n.flag}/${n.id}.html">${n.name}</a> </td>
</tr>
<tr>
<td align="right" valign="middle"><img src="/images/about_01.gif" width="180" height="13" /></td>
</tr>
</table>
</logic:iterate>
</logic:present>
</td>
</tr>
</table></td>
</tr>
</table></td>
<td width="3"></td>
<td width="660" align="left" valign="top" bgcolor="#FFFFFF"><table width="100%" border="0" align="center" cellpadding="0" cellspacing="0">
<tr>
<td class="img" width="600" height="195" align="left" valign="top"><img src="/images/about.jpg" width="651" height="187" /></td>
</tr>
<tr>
<td class="content" valign="top">${article.content}</td>
</tr>
</table></td>
</tr>
</table></td>
</tr>
<tr>
<td valign="top"><img src="/images/bgbbottom_01.gif" width="865" height="21" /></td>
</tr>
</table></td>
</tr>
<tr>
<td align="center" valign="top"><%@include file="/bottom.jsp"%></td>
</tr>
</table>
</body>
</html>
...全文
请发表友善的回复…
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real518 2009-03-17
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依次在page、request、session、application中查找名为newsClassName的值
Defonds 2009-03-17
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我资源里有本el详细介绍.chm
介绍的很详细，配有大量代码示例
楼主可以去看看
介绍的很详细，配有大量代码示例
楼主可以去看看
問傷 2009-03-17
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谢谢大家，终于明白了！！以后还向你们多请教啦！
什么都不能 2009-03-17
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el 表达式
zhj92lxs 2009-03-17
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el表达式，楼主可以网上找找资料
guoapeng 2009-03-17
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${newsClassName } 在session 或request 里面取得 键值为newsClassName 的对象并转换为字符串
${n.id} 在session 或request 里面取得 键值为 n的对象，并获取它的id属性，实际上是调用getId（）方法获取
${n.id} 在session 或request 里面取得 键值为 n的对象，并获取它的id属性，实际上是调用getId（）方法获取
